./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i --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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/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 8747544e36e683649fe61d526aa97a5c087279371c458d990497ba77992cacc4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:53:51,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:53:51,927 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:53:51,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:53:51,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:53:51,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:53:51,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:53:51,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:53:51,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:53:51,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:53:51,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:53:51,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:53:51,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:53:51,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:53:51,977 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:53:51,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:53:51,978 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:53:51,979 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:51,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:51,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:51,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:53:51,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:53:51,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:53:51,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:53:51,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:53:51,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:53:51,982 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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/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 -> 8747544e36e683649fe61d526aa97a5c087279371c458d990497ba77992cacc4 [2024-11-24 01:53:52,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:53:52,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:53:52,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:53:52,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:53:52,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:53:52,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i [2024-11-24 01:53:55,187 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/data/346a9c8c5/b4f665a167814dc28827a281d0f89ab9/FLAG2230f90e0 [2024-11-24 01:53:55,452 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:53:55,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i [2024-11-24 01:53:55,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/data/346a9c8c5/b4f665a167814dc28827a281d0f89ab9/FLAG2230f90e0 [2024-11-24 01:53:55,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/data/346a9c8c5/b4f665a167814dc28827a281d0f89ab9 [2024-11-24 01:53:55,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:53:55,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:53:55,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:55,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:53:55,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:53:55,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50b7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55, skipping insertion in model container [2024-11-24 01:53:55,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:53:55,685 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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i[915,928] [2024-11-24 01:53:55,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:55,757 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:53:55,768 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_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-57.i[915,928] [2024-11-24 01:53:55,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:55,806 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:53:55,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55 WrapperNode [2024-11-24 01:53:55,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:55,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:55,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:53:55,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:53:55,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,847 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2024-11-24 01:53:55,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:55,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:53:55,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:53:55,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:53:55,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,887 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 01:53:55,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,899 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:53:55,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:53:55,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:53:55,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:53:55,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (1/1) ... [2024-11-24 01:53:55,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:55,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:55,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:53:55,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:53:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:53:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:53:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:53:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:53:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:53:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:53:56,046 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:53:56,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:53:56,330 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-24 01:53:56,333 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:53:56,345 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:53:56,346 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:53:56,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:56 BoogieIcfgContainer [2024-11-24 01:53:56,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:53:56,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:53:56,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:53:56,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:53:56,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:53:55" (1/3) ... [2024-11-24 01:53:56,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe289b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:56, skipping insertion in model container [2024-11-24 01:53:56,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:55" (2/3) ... [2024-11-24 01:53:56,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe289b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:56, skipping insertion in model container [2024-11-24 01:53:56,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:56" (3/3) ... [2024-11-24 01:53:56,359 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-57.i [2024-11-24 01:53:56,374 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:53:56,376 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-57.i that has 2 procedures, 57 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:53:56,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:53:56,465 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;@6af75ecf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:53:56,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:53:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:53:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 01:53:56,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:56,480 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:56,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:56,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1847170664, now seen corresponding path program 1 times [2024-11-24 01:53:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:56,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019922548] [2024-11-24 01:53:56,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-24 01:53:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:56,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019922548] [2024-11-24 01:53:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019922548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:56,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308256743] [2024-11-24 01:53:56,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:56,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:56,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:56,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:56,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:53:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:56,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:53:56,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-24 01:53:56,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:53:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308256743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:56,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:53:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:53:56,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471710764] [2024-11-24 01:53:56,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:56,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:53:56,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:56,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:53:56,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:53:56,894 INFO L87 Difference]: Start difference. First operand has 57 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:53:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:56,918 INFO L93 Difference]: Finished difference Result 106 states and 168 transitions. [2024-11-24 01:53:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:53:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2024-11-24 01:53:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:56,926 INFO L225 Difference]: With dead ends: 106 [2024-11-24 01:53:56,927 INFO L226 Difference]: Without dead ends: 52 [2024-11-24 01:53:56,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 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 01:53:56,932 INFO L435 NwaCegarLoop]: 72 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, 72 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 01:53:56,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-24 01:53:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-24 01:53:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:53:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-24 01:53:56,974 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 74 [2024-11-24 01:53:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:56,974 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-24 01:53:56,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-24 01:53:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-24 01:53:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-24 01:53:56,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:56,977 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:56,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:53:57,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:53:57,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:57,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:57,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1098722018, now seen corresponding path program 1 times [2024-11-24 01:53:57,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:57,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044190864] [2024-11-24 01:53:57,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:57,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 01:53:57,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:57,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044190864] [2024-11-24 01:53:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044190864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:57,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125822382] [2024-11-24 01:53:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:57,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:57,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:57,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:57,608 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 01:53:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:57,719 INFO L93 Difference]: Finished difference Result 133 states and 188 transitions. [2024-11-24 01:53:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2024-11-24 01:53:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:57,722 INFO L225 Difference]: With dead ends: 133 [2024-11-24 01:53:57,724 INFO L226 Difference]: Without dead ends: 84 [2024-11-24 01:53:57,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:53:57,726 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 62 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:57,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 268 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-24 01:53:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2024-11-24 01:53:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 01:53:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-24 01:53:57,744 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 74 [2024-11-24 01:53:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:57,745 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-24 01:53:57,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 01:53:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-24 01:53:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:53:57,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:57,748 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:57,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:53:57,748 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:57,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1975133147, now seen corresponding path program 1 times [2024-11-24 01:53:57,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:57,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727397063] [2024-11-24 01:53:57,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:57,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 01:53:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727397063] [2024-11-24 01:53:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727397063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:58,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:53:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208239644] [2024-11-24 01:53:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:58,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:53:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:58,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:53:58,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:58,051 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 01:53:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:58,220 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2024-11-24 01:53:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:53:58,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2024-11-24 01:53:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:58,222 INFO L225 Difference]: With dead ends: 56 [2024-11-24 01:53:58,222 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 01:53:58,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:53:58,223 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 36 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:58,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 286 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:58,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 01:53:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 01:53:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 01:53:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 01:53:58,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2024-11-24 01:53:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:58,227 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:53:58,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-24 01:53:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 01:53:58,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 01:53:58,234 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 01:53:58,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:53:58,238 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-24 01:53:58,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-24 01:53:58,290 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:53:58,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:53:58 BoogieIcfgContainer [2024-11-24 01:53:58,304 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:53:58,304 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:53:58,304 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:53:58,305 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:53:58,305 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:56" (3/4) ... [2024-11-24 01:53:58,308 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 01:53:58,315 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-24 01:53:58,320 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-24 01:53:58,320 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-24 01:53:58,321 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 01:53:58,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 01:53:58,419 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:53:58,420 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:53:58,420 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:53:58,421 INFO L158 Benchmark]: Toolchain (without parser) took 2930.15ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 109.6MB in the end (delta: 6.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-24 01:53:58,422 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:58,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.14ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 103.9MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:53:58,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.30ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 102.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:58,423 INFO L158 Benchmark]: Boogie Preprocessor took 63.61ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 100.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:58,424 INFO L158 Benchmark]: RCFGBuilder took 431.33ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 85.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:53:58,425 INFO L158 Benchmark]: TraceAbstraction took 1954.74ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 115.8MB in the end (delta: -31.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2024-11-24 01:53:58,425 INFO L158 Benchmark]: Witness Printer took 115.50ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 109.6MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:58,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.14ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 103.9MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.30ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 102.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.61ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 100.4MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 431.33ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 85.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1954.74ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 115.8MB in the end (delta: -31.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * Witness Printer took 115.50ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 109.6MB in the end (delta: 6.1MB). 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 626 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 387 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 239 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 32 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 702/720 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 92]: Loop Invariant Derived loop invariant: (var_1_11 == var_1_10) RESULT: Ultimate proved your program to be correct! [2024-11-24 01:53:58,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f13c152e-7f0d-4d16-a17e-7b3bf1f4119c/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 Result: TRUE