./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Ackermann02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/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_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/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_13a7456c-6be6-48a1-bdcb-f23b64198a38/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 20c02b81d1b1bc312ccc75d6e9b31c6252d69e8a6e2560afe3a2a95a3e53102a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:29:59,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:29:59,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:29:59,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:29:59,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:29:59,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:29:59,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:29:59,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:29:59,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:29:59,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:29:59,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:29:59,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:29:59,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:29:59,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:29:59,608 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:29:59,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:29:59,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:29:59,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:29:59,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:29:59,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:29:59,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:29:59,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:29:59,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:29:59,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:29:59,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:29:59,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:29:59,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:29:59,612 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_13a7456c-6be6-48a1-bdcb-f23b64198a38/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 -> 20c02b81d1b1bc312ccc75d6e9b31c6252d69e8a6e2560afe3a2a95a3e53102a [2024-11-24 01:29:59,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:29:59,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:29:59,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:29:59,962 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:29:59,962 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:29:59,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/recursive/Ackermann02.c [2024-11-24 01:30:03,028 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/data/c6d2bf398/735831aefb224875b199f481dd0591a2/FLAG34ad858ae [2024-11-24 01:30:03,316 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:30:03,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/sv-benchmarks/c/recursive/Ackermann02.c [2024-11-24 01:30:03,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/data/c6d2bf398/735831aefb224875b199f481dd0591a2/FLAG34ad858ae [2024-11-24 01:30:03,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/data/c6d2bf398/735831aefb224875b199f481dd0591a2 [2024-11-24 01:30:03,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:30:03,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:30:03,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:03,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:30:03,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:30:03,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776c6a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03, skipping insertion in model container [2024-11-24 01:30:03,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:30:03,586 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_13a7456c-6be6-48a1-bdcb-f23b64198a38/sv-benchmarks/c/recursive/Ackermann02.c[1157,1170] [2024-11-24 01:30:03,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:03,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:30:03,628 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_13a7456c-6be6-48a1-bdcb-f23b64198a38/sv-benchmarks/c/recursive/Ackermann02.c[1157,1170] [2024-11-24 01:30:03,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:03,650 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:30:03,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03 WrapperNode [2024-11-24 01:30:03,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:03,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:03,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:30:03,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:30:03,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,690 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-24 01:30:03,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:03,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:30:03,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:30:03,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:30:03,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,728 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 01:30:03,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:30:03,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:30:03,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:30:03,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:30:03,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (1/1) ... [2024-11-24 01:30:03,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:03,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:03,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:30:03,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:30:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:30:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:30:03,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:30:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-11-24 01:30:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-11-24 01:30:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:30:03,912 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:30:03,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:30:04,088 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-24 01:30:04,088 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:30:04,099 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:30:04,100 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:30:04,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:04 BoogieIcfgContainer [2024-11-24 01:30:04,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:30:04,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:30:04,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:30:04,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:30:04,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:30:03" (1/3) ... [2024-11-24 01:30:04,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1019e644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:04, skipping insertion in model container [2024-11-24 01:30:04,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:03" (2/3) ... [2024-11-24 01:30:04,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1019e644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:04, skipping insertion in model container [2024-11-24 01:30:04,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:04" (3/3) ... [2024-11-24 01:30:04,114 INFO L128 eAbstractionObserver]: Analyzing ICFG Ackermann02.c [2024-11-24 01:30:04,135 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:30:04,139 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Ackermann02.c that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 01:30:04,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:30:04,237 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;@23cc080a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:30:04,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:30:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 01:30:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:30:04,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:04,251 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:04,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:04,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2024-11-24 01:30:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770430491] [2024-11-24 01:30:04,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:04,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770430491] [2024-11-24 01:30:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770430491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:04,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:04,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:30:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827224634] [2024-11-24 01:30:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:04,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:30:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:04,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:30:04,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:30:04,590 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-11-24 01:30:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:04,830 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2024-11-24 01:30:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:30:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-24 01:30:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:04,841 INFO L225 Difference]: With dead ends: 37 [2024-11-24 01:30:04,843 INFO L226 Difference]: Without dead ends: 27 [2024-11-24 01:30:04,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:30:04,852 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:04,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:30:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-24 01:30:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-24 01:30:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-24 01:30:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2024-11-24 01:30:04,912 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 12 [2024-11-24 01:30:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:04,912 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2024-11-24 01:30:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-11-24 01:30:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2024-11-24 01:30:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 01:30:04,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:04,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:04,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:30:04,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:04,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2024-11-24 01:30:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641178032] [2024-11-24 01:30:04,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:30:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641178032] [2024-11-24 01:30:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641178032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153008329] [2024-11-24 01:30:05,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:05,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:05,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:30:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:05,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:30:05,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:30:05,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:30:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:30:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153008329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:30:05,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:30:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2024-11-24 01:30:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242808561] [2024-11-24 01:30:05,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:30:05,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:30:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:05,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:30:05,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:30:05,701 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:30:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:05,866 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2024-11-24 01:30:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:30:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-11-24 01:30:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:05,869 INFO L225 Difference]: With dead ends: 37 [2024-11-24 01:30:05,870 INFO L226 Difference]: Without dead ends: 33 [2024-11-24 01:30:05,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:30:05,872 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:05,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 70 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:30:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-24 01:30:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-24 01:30:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-24 01:30:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2024-11-24 01:30:05,885 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 19 [2024-11-24 01:30:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:05,886 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2024-11-24 01:30:05,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:30:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2024-11-24 01:30:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 01:30:05,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:05,888 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:05,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:30:06,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:06,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:06,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash -952852693, now seen corresponding path program 2 times [2024-11-24 01:30:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458224643] [2024-11-24 01:30:06,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:30:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:06,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:30:06,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:30:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:30:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458224643] [2024-11-24 01:30:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458224643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226253122] [2024-11-24 01:30:06,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:30:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:06,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:06,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:30:06,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:30:06,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:30:06,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:30:06,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:30:06,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:30:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 01:30:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226253122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:30:06,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:30:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-24 01:30:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452098755] [2024-11-24 01:30:06,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:30:06,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:30:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:30:06,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:30:06,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:30:06,420 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-24 01:30:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:06,516 INFO L93 Difference]: Finished difference Result 63 states and 119 transitions. [2024-11-24 01:30:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:30:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2024-11-24 01:30:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:06,518 INFO L225 Difference]: With dead ends: 63 [2024-11-24 01:30:06,519 INFO L226 Difference]: Without dead ends: 37 [2024-11-24 01:30:06,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:30:06,524 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:06,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:30:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-24 01:30:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-24 01:30:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (25), 9 states have call predecessors, (25), 6 states have call successors, (25) [2024-11-24 01:30:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2024-11-24 01:30:06,536 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 26 [2024-11-24 01:30:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:06,537 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2024-11-24 01:30:06,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-24 01:30:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2024-11-24 01:30:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:30:06,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:06,539 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:06,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:30:06,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:06,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:30:06,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1429337198, now seen corresponding path program 1 times [2024-11-24 01:30:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:30:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352386311] [2024-11-24 01:30:06,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:30:06,768 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:30:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:30:06,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:30:06,802 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:30:06,803 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 01:30:06,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:30:06,809 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-24 01:30:06,836 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:30:06,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:30:06 BoogieIcfgContainer [2024-11-24 01:30:06,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:30:06,839 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:30:06,839 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:30:06,840 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:30:06,840 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:04" (3/4) ... [2024-11-24 01:30:06,841 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 01:30:06,880 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 22. [2024-11-24 01:30:06,978 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:30:06,978 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:30:06,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:30:06,979 INFO L158 Benchmark]: Toolchain (without parser) took 3616.89ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 90.5MB in the end (delta: 2.8MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2024-11-24 01:30:06,981 INFO L158 Benchmark]: CDTParser took 1.52ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:06,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.44ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 82.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:30:06,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.53ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:06,982 INFO L158 Benchmark]: Boogie Preprocessor took 54.69ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:06,983 INFO L158 Benchmark]: RCFGBuilder took 353.05ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 70.0MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:30:06,983 INFO L158 Benchmark]: TraceAbstraction took 2735.56ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 38.6MB in the end (delta: 30.9MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2024-11-24 01:30:06,983 INFO L158 Benchmark]: Witness Printer took 138.88ms. Allocated memory is still 117.4MB. Free memory was 38.6MB in the beginning and 91.2MB in the end (delta: -52.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-11-24 01:30:06,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.44ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 82.6MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.53ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.69ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 353.05ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 70.0MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2735.56ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 38.6MB in the end (delta: 30.9MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 138.88ms. Allocated memory is still 117.4MB. Free memory was 38.6MB in the beginning and 91.2MB in the end (delta: -52.6MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0 || m > 3) [L34] int n = __VERIFIER_nondet_int(); [L35] COND FALSE !(n < 0 || n > 23) VAL [m=2, n=0] [L41] CALL, EXPR ackermann(m,n) VAL [\old(m)=2, \old(n)=0] [L17] COND FALSE !(m==0) VAL [\old(m)=2, \old(n)=0, m=2, n=0] [L20] COND TRUE n==0 VAL [\old(m)=2, \old(n)=0, m=2] [L21] CALL, EXPR ackermann(m-1,1) VAL [\old(m)=1, \old(n)=1] [L17] COND FALSE !(m==0) VAL [\old(m)=1, \old(n)=1, m=1, n=1] [L20] COND FALSE !(n==0) VAL [\old(m)=1, \old(n)=1, m=1, n=1] [L23] CALL, EXPR ackermann(m,n-1) VAL [\old(m)=1, \old(n)=0] [L17] COND FALSE !(m==0) VAL [\old(m)=1, \old(n)=0, m=1, n=0] [L20] COND TRUE n==0 VAL [\old(m)=1, \old(n)=0, m=1] [L21] CALL, EXPR ackermann(m-1,1) VAL [\old(m)=0, \old(n)=1] [L17] COND TRUE m==0 [L18] return n+1; VAL [\old(m)=0, \old(n)=1, \result=2] [L21] RET, EXPR ackermann(m-1,1) VAL [\old(m)=1, \old(n)=0, m=1] [L21] return ackermann(m-1,1); [L23] RET, EXPR ackermann(m,n-1) VAL [\old(m)=1, \old(n)=1, m=1, n=1] [L23] CALL, EXPR ackermann(m-1,ackermann(m,n-1)) VAL [\old(m)=0, \old(n)=2] [L17] COND TRUE m==0 [L18] return n+1; VAL [\old(m)=0, \old(n)=2, \result=3] [L23] RET, EXPR ackermann(m-1,ackermann(m,n-1)) VAL [\old(m)=1, \old(n)=1, m=1, n=1] [L23] return ackermann(m-1,ackermann(m,n-1)); [L21] RET, EXPR ackermann(m-1,1) VAL [\old(m)=2, \old(n)=0, m=2] [L21] return ackermann(m-1,1); [L41] RET, EXPR ackermann(m,n) VAL [m=2, n=0] [L41] int result = ackermann(m,n); [L42] COND FALSE !(m < 2 || result >= 4) VAL [n=0] [L45] reach_error() VAL [n=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 68 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 1 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 47/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-24 01:30:06,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a7456c-6be6-48a1-bdcb-f23b64198a38/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE