./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc91ced7bcccf661129c3f4bf0d427a9a72d34c82f3ff7a23345948320ae0e49 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:12:21,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:12:21,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:12:21,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:12:21,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:12:21,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:12:21,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:12:21,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:12:21,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:12:21,695 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:12:21,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:12:21,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:12:21,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:12:21,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:12:21,697 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:12:21,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:12:21,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:12:21,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:12:21,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:12:21,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:12:21,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:12:21,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:12:21,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:12:21,701 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:12:21,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:12:21,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:12:21,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:12:21,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:12:21,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:12:21,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:12:21,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:12:21,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:12:21,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:12:21,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:12:21,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:12:21,703 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:12:21,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:12:21,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:12:21,704 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_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc91ced7bcccf661129c3f4bf0d427a9a72d34c82f3ff7a23345948320ae0e49 [2024-11-28 04:12:22,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:12:22,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:12:22,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:12:22,129 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:12:22,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:12:22,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c [2024-11-28 04:12:25,420 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/data/d44c9bfff/6f6ebfcdb08347268ea7b618196ec768/FLAG58f21372b [2024-11-28 04:12:25,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:12:25,752 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c [2024-11-28 04:12:25,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/data/d44c9bfff/6f6ebfcdb08347268ea7b618196ec768/FLAG58f21372b [2024-11-28 04:12:25,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/data/d44c9bfff/6f6ebfcdb08347268ea7b618196ec768 [2024-11-28 04:12:25,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:12:25,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:12:25,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:12:25,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:12:25,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:12:25,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:12:25" (1/1) ... [2024-11-28 04:12:25,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6150f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:25, skipping insertion in model container [2024-11-28 04:12:25,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:12:25" (1/1) ... [2024-11-28 04:12:25,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:12:26,040 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_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c[973,986] [2024-11-28 04:12:26,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:12:26,076 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:12:26,094 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_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/sv-benchmarks/c/recursified_loop-invariants/recursified_eq2.c[973,986] [2024-11-28 04:12:26,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:12:26,118 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:12:26,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26 WrapperNode [2024-11-28 04:12:26,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:12:26,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:12:26,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:12:26,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:12:26,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,170 INFO L138 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2024-11-28 04:12:26,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:12:26,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:12:26,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:12:26,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:12:26,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,208 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 4, 6, 4]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 1, 6, 1]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-11-28 04:12:26,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,213 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:12:26,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:12:26,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:12:26,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:12:26,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (1/1) ... [2024-11-28 04:12:26,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:12:26,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:26,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:12:26,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:12:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:12:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:12:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:12:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:12:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:12:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:12:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:12:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:12:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:12:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:12:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_16_to_18_0 [2024-11-28 04:12:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_16_to_18_0 [2024-11-28 04:12:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:12:26,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:12:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:12:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:12:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:12:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:12:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:12:26,429 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:12:26,432 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:12:26,587 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 04:12:26,588 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:12:26,602 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:12:26,603 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:12:26,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:12:26 BoogieIcfgContainer [2024-11-28 04:12:26,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:12:26,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:12:26,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:12:26,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:12:26,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:12:25" (1/3) ... [2024-11-28 04:12:26,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f49d8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:12:26, skipping insertion in model container [2024-11-28 04:12:26,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:12:26" (2/3) ... [2024-11-28 04:12:26,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f49d8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:12:26, skipping insertion in model container [2024-11-28 04:12:26,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:12:26" (3/3) ... [2024-11-28 04:12:26,615 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_eq2.c [2024-11-28 04:12:26,635 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:12:26,637 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_eq2.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:12:26,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:12:26,728 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;@7d39dfb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:12:26,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:12:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:12:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:12:26,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:26,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:12:26,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:26,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1047933417, now seen corresponding path program 1 times [2024-11-28 04:12:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991033575] [2024-11-28 04:12:26,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991033575] [2024-11-28 04:12:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991033575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:12:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:12:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:12:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081853283] [2024-11-28 04:12:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:12:27,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:12:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:27,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:12:27,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:12:27,719 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:12:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:27,828 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-28 04:12:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:12:27,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-28 04:12:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:27,839 INFO L225 Difference]: With dead ends: 26 [2024-11-28 04:12:27,839 INFO L226 Difference]: Without dead ends: 14 [2024-11-28 04:12:27,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:12:27,847 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:27,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:12:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-28 04:12:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-28 04:12:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:12:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-28 04:12:27,886 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-11-28 04:12:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:27,887 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-28 04:12:27,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:12:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-28 04:12:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:12:27,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:12:27,889 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:12:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:12:27,889 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:12:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:12:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1901459039, now seen corresponding path program 1 times [2024-11-28 04:12:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:12:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408793318] [2024-11-28 04:12:27,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:12:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:12:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:12:29,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408793318] [2024-11-28 04:12:29,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408793318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:12:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082747474] [2024-11-28 04:12:29,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:12:29,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:12:29,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:12:29,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:12:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:12:29,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:12:29,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:12:29,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-28 04:12:29,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-28 04:12:29,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2024-11-28 04:12:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:12:29,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:12:30,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:12:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:12:48,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082747474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:12:48,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:12:48,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-28 04:12:48,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253627800] [2024-11-28 04:12:48,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:12:48,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:12:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:12:48,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:12:48,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=135, Unknown=4, NotChecked=0, Total=182 [2024-11-28 04:12:48,780 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:12:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:12:49,081 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-11-28 04:12:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:12:49,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 15 [2024-11-28 04:12:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:12:49,083 INFO L225 Difference]: With dead ends: 16 [2024-11-28 04:12:49,083 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:12:49,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=50, Invalid=156, Unknown=4, NotChecked=0, Total=210 [2024-11-28 04:12:49,085 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:12:49,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:12:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:12:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:12:49,087 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) [2024-11-28 04:12:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:12:49,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-28 04:12:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:12:49,088 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:12:49,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:12:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:12:49,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:12:49,091 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:12:49,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:12:49,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:12:49,299 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 04:12:49,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:12:49,527 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:12:49,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:12:49 BoogieIcfgContainer [2024-11-28 04:12:49,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:12:49,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:12:49,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:12:49,536 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:12:49,537 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:12:26" (3/4) ... [2024-11-28 04:12:49,540 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:12:49,545 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_16_to_18_0 [2024-11-28 04:12:49,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-28 04:12:49,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-28 04:12:49,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:12:49,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:12:49,550 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:12:49,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:12:49,653 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:12:49,653 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:12:49,655 INFO L158 Benchmark]: Toolchain (without parser) took 23870.34ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 94.5MB in the beginning and 213.4MB in the end (delta: -118.9MB). Peak memory consumption was 114.1MB. Max. memory is 16.1GB. [2024-11-28 04:12:49,656 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:12:49,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.54ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 83.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:12:49,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.18ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 82.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:12:49,657 INFO L158 Benchmark]: Boogie Preprocessor took 48.14ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:12:49,658 INFO L158 Benchmark]: RCFGBuilder took 381.14ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 69.3MB in the end (delta: 11.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:12:49,659 INFO L158 Benchmark]: TraceAbstraction took 22929.43ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 68.8MB in the beginning and 218.0MB in the end (delta: -149.2MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2024-11-28 04:12:49,659 INFO L158 Benchmark]: Witness Printer took 117.73ms. Allocated memory is still 352.3MB. Free memory was 218.0MB in the beginning and 213.4MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:12:49,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 142.6MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.54ms. Allocated memory is still 117.4MB. Free memory was 94.5MB in the beginning and 83.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.18ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 82.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.14ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 80.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.14ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 69.3MB in the end (delta: 11.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22929.43ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 68.8MB in the beginning and 218.0MB in the end (delta: -149.2MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. * Witness Printer took 117.73ms. Allocated memory is still 352.3MB. Free memory was 218.0MB in the beginning and 213.4MB in the end (delta: 4.6MB). 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 - PositiveResult [Line: 27]: 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 21 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 4 QuantifiedInterpolants, 761 SizeOfPredicates, 10 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 3/12 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 RESULT: Ultimate proved your program to be correct! [2024-11-28 04:12:49,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_222fca9f-8dfd-4d7d-b35b-9ad4ae99160d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE