./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.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_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/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_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/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_a34d8dd6-2804-4311-b1c3-71e41095a020/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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:22:37,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:22:37,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:22:37,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:22:37,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:22:37,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:22:37,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:22:37,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:22:37,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:22:37,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:22:37,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:22:37,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:22:37,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:22:37,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:22:37,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:22:37,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:22:37,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:22:37,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:37,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:37,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:37,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:22:37,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:22:37,254 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_a34d8dd6-2804-4311-b1c3-71e41095a020/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 -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2024-11-27 23:22:37,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:22:37,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:22:37,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:22:37,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:22:37,587 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:22:37,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci03.c [2024-11-27 23:22:40,582 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/data/1bc2562be/cd859ca411e744f8a579b2f3e0b85b55/FLAGf8f6a0258 [2024-11-27 23:22:40,885 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:22:40,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/sv-benchmarks/c/recursive/Fibonacci03.c [2024-11-27 23:22:40,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/data/1bc2562be/cd859ca411e744f8a579b2f3e0b85b55/FLAGf8f6a0258 [2024-11-27 23:22:40,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/data/1bc2562be/cd859ca411e744f8a579b2f3e0b85b55 [2024-11-27 23:22:40,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:22:40,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:22:40,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:40,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:22:40,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:22:40,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:40" (1/1) ... [2024-11-27 23:22:40,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454fb1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:40, skipping insertion in model container [2024-11-27 23:22:40,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:40" (1/1) ... [2024-11-27 23:22:40,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:41,169 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_a34d8dd6-2804-4311-b1c3-71e41095a020/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2024-11-27 23:22:41,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:41,191 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:22:41,212 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_a34d8dd6-2804-4311-b1c3-71e41095a020/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2024-11-27 23:22:41,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:41,231 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:22:41,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41 WrapperNode [2024-11-27 23:22:41,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:41,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:41,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:22:41,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:22:41,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,275 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-27 23:22:41,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:41,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:22:41,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:22:41,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:22:41,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,308 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]. [2024-11-27 23:22:41,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,312 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:22:41,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:22:41,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:22:41,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:22:41,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (1/1) ... [2024-11-27 23:22:41,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:41,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:41,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:22:41,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:22:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-27 23:22:41,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-27 23:22:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:22:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:22:41,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:22:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:22:41,457 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:22:41,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:22:41,625 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-27 23:22:41,626 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:22:41,640 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:22:41,642 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:22:41,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:41 BoogieIcfgContainer [2024-11-27 23:22:41,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:22:41,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:22:41,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:22:41,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:22:41,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:22:40" (1/3) ... [2024-11-27 23:22:41,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340c42c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:41, skipping insertion in model container [2024-11-27 23:22:41,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:41" (2/3) ... [2024-11-27 23:22:41,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340c42c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:41, skipping insertion in model container [2024-11-27 23:22:41,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:41" (3/3) ... [2024-11-27 23:22:41,658 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2024-11-27 23:22:41,678 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:22:41,680 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci03.c that has 2 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:22:41,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:22:41,758 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;@48f632ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:22:41,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:22:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:22:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:22:41,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:41,772 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:41,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:41,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1939714822, now seen corresponding path program 1 times [2024-11-27 23:22:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:41,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788361986] [2024-11-27 23:22:41,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:42,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:42,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788361986] [2024-11-27 23:22:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788361986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937282385] [2024-11-27 23:22:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:42,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:22:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:42,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:22:42,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:42,182 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-27 23:22:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:42,315 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2024-11-27 23:22:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2024-11-27 23:22:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:42,327 INFO L225 Difference]: With dead ends: 31 [2024-11-27 23:22:42,330 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 23:22:42,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:42,337 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:42,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 23:22:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-27 23:22:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-27 23:22:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-27 23:22:42,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2024-11-27 23:22:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:42,389 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-27 23:22:42,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-27 23:22:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-27 23:22:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:22:42,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:42,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:42,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:22:42,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:42,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 692912656, now seen corresponding path program 1 times [2024-11-27 23:22:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760955672] [2024-11-27 23:22:42,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:42,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:42,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760955672] [2024-11-27 23:22:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760955672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:42,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:42,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48947621] [2024-11-27 23:22:42,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:42,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:22:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:42,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:22:42,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:42,547 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. 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) [2024-11-27 23:22:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:42,631 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-27 23:22:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:22:42,632 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 [2024-11-27 23:22:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:42,633 INFO L225 Difference]: With dead ends: 25 [2024-11-27 23:22:42,633 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 23:22:42,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:42,634 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:42,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:42,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 23:22:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-27 23:22:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-27 23:22:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-27 23:22:42,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2024-11-27 23:22:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:42,641 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-27 23:22:42,641 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) [2024-11-27 23:22:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-27 23:22:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 23:22:42,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:42,642 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:42,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:22:42,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:42,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 453332055, now seen corresponding path program 1 times [2024-11-27 23:22:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400299253] [2024-11-27 23:22:42,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:22:42,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400299253] [2024-11-27 23:22:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400299253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301938769] [2024-11-27 23:22:42,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:42,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:42,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:22:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:42,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:22:42,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:22:43,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:22:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301938769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:43,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-27 23:22:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515535063] [2024-11-27 23:22:43,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:43,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:22:43,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:43,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:22:43,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:22:43,465 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-27 23:22:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:43,657 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2024-11-27 23:22:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:22:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 24 [2024-11-27 23:22:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:43,659 INFO L225 Difference]: With dead ends: 43 [2024-11-27 23:22:43,659 INFO L226 Difference]: Without dead ends: 26 [2024-11-27 23:22:43,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:22:43,661 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:43,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-27 23:22:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-27 23:22:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-27 23:22:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-27 23:22:43,682 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 24 [2024-11-27 23:22:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:43,684 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-27 23:22:43,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-27 23:22:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-27 23:22:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 23:22:43,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:43,687 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:43,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:22:43,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:43,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:43,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1186000891, now seen corresponding path program 1 times [2024-11-27 23:22:43,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:43,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179604334] [2024-11-27 23:22:43,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 23:22:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179604334] [2024-11-27 23:22:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179604334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758121085] [2024-11-27 23:22:44,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:44,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:44,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:44,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:44,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:22:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:44,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:22:44,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 23:22:44,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:22:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758121085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:44,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-11-27 23:22:44,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835198796] [2024-11-27 23:22:44,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:44,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:22:44,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:44,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:22:44,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:22:44,896 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-27 23:22:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:45,123 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2024-11-27 23:22:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:22:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2024-11-27 23:22:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:45,130 INFO L225 Difference]: With dead ends: 45 [2024-11-27 23:22:45,130 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 23:22:45,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:22:45,132 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:45,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 69 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:22:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 23:22:45,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-27 23:22:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) [2024-11-27 23:22:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 61 transitions. [2024-11-27 23:22:45,149 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 61 transitions. Word has length 52 [2024-11-27 23:22:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:45,150 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 61 transitions. [2024-11-27 23:22:45,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-27 23:22:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 61 transitions. [2024-11-27 23:22:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 23:22:45,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:45,156 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 15, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:45,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:22:45,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-27 23:22:45,361 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:45,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 843019629, now seen corresponding path program 2 times [2024-11-27 23:22:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556371484] [2024-11-27 23:22:45,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:45,426 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:45,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2024-11-27 23:22:45,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:45,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556371484] [2024-11-27 23:22:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556371484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:45,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213706466] [2024-11-27 23:22:45,926 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:45,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:45,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:22:46,090 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:46,090 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:46,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:22:46,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2024-11-27 23:22:46,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 427 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2024-11-27 23:22:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213706466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:47,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:47,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-27 23:22:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114320063] [2024-11-27 23:22:47,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:47,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:22:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:47,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:22:47,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:22:47,760 INFO L87 Difference]: Start difference. First operand 36 states and 61 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-27 23:22:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:47,998 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2024-11-27 23:22:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:22:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) Word has length 158 [2024-11-27 23:22:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:48,002 INFO L225 Difference]: With dead ends: 55 [2024-11-27 23:22:48,002 INFO L226 Difference]: Without dead ends: 49 [2024-11-27 23:22:48,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:22:48,004 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:48,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 85 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:22:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-27 23:22:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-11-27 23:22:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (56), 13 states have call predecessors, (56), 8 states have call successors, (56) [2024-11-27 23:22:48,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2024-11-27 23:22:48,020 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 158 [2024-11-27 23:22:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:48,021 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2024-11-27 23:22:48,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-27 23:22:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2024-11-27 23:22:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-27 23:22:48,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:48,030 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 41, 29, 29, 29, 29, 29, 29, 29, 18, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:48,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:48,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:48,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:48,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1718675215, now seen corresponding path program 3 times [2024-11-27 23:22:48,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:48,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51900128] [2024-11-27 23:22:48,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:48,278 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:22:48,279 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1080 proven. 43 refuted. 0 times theorem prover too weak. 8165 trivial. 0 not checked. [2024-11-27 23:22:48,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51900128] [2024-11-27 23:22:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51900128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043140537] [2024-11-27 23:22:48,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:48,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:48,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:48,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:48,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:22:48,564 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:22:48,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:48,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:22:48,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 2073 proven. 13 refuted. 0 times theorem prover too weak. 7202 trivial. 0 not checked. [2024-11-27 23:22:48,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1262 proven. 60 refuted. 0 times theorem prover too weak. 7966 trivial. 0 not checked. [2024-11-27 23:22:50,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043140537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:50,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-27 23:22:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884489714] [2024-11-27 23:22:50,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:50,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:22:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:50,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:22:50,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:22:50,282 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 23:22:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:50,418 INFO L93 Difference]: Finished difference Result 93 states and 240 transitions. [2024-11-27 23:22:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:22:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) Word has length 400 [2024-11-27 23:22:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:50,425 INFO L225 Difference]: With dead ends: 93 [2024-11-27 23:22:50,425 INFO L226 Difference]: Without dead ends: 51 [2024-11-27 23:22:50,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 791 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:22:50,427 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:50,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 75 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:22:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-27 23:22:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-27 23:22:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (51), 13 states have call predecessors, (51), 8 states have call successors, (51) [2024-11-27 23:22:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 92 transitions. [2024-11-27 23:22:50,466 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 92 transitions. Word has length 400 [2024-11-27 23:22:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:50,467 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 92 transitions. [2024-11-27 23:22:50,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 23:22:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 92 transitions. [2024-11-27 23:22:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-27 23:22:50,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:50,483 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 61, 35, 35, 35, 35, 35, 35, 35, 26, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:50,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:22:50,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:50,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:50,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 482273333, now seen corresponding path program 4 times [2024-11-27 23:22:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:50,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868248814] [2024-11-27 23:22:50,688 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:22:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:50,787 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:22:50,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 1256 proven. 2490 refuted. 0 times theorem prover too weak. 10404 trivial. 0 not checked. [2024-11-27 23:22:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:52,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868248814] [2024-11-27 23:22:52,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868248814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:52,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169664434] [2024-11-27 23:22:52,120 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:22:52,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:52,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:22:52,336 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:22:52,337 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:52,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:22:52,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 4694 proven. 170 refuted. 0 times theorem prover too weak. 9286 trivial. 0 not checked. [2024-11-27 23:22:52,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 506 proven. 2500 refuted. 0 times theorem prover too weak. 11144 trivial. 0 not checked. [2024-11-27 23:22:55,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169664434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:55,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:55,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 15] total 27 [2024-11-27 23:22:55,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826390199] [2024-11-27 23:22:55,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:55,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:22:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:55,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:22:55,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:22:55,197 INFO L87 Difference]: Start difference. First operand 48 states and 92 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-27 23:22:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:55,919 INFO L93 Difference]: Finished difference Result 140 states and 339 transitions. [2024-11-27 23:22:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:22:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) Word has length 492 [2024-11-27 23:22:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:55,922 INFO L225 Difference]: With dead ends: 140 [2024-11-27 23:22:55,922 INFO L226 Difference]: Without dead ends: 96 [2024-11-27 23:22:55,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 975 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 23:22:55,926 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:55,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 203 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:22:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-27 23:22:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-27 23:22:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 66 states have internal predecessors, (73), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-27 23:22:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2024-11-27 23:22:55,942 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 492 [2024-11-27 23:22:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:55,942 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2024-11-27 23:22:55,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-27 23:22:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2024-11-27 23:22:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2024-11-27 23:22:55,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:55,948 INFO L218 NwaCegarLoop]: trace histogram [97, 97, 78, 48, 48, 48, 48, 48, 48, 48, 30, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:55,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:56,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:56,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:56,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1230230680, now seen corresponding path program 5 times [2024-11-27 23:22:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128875282] [2024-11-27 23:22:56,153 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:22:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:56,331 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-27 23:22:56,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3735 proven. 1741 refuted. 0 times theorem prover too weak. 20663 trivial. 0 not checked. [2024-11-27 23:22:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128875282] [2024-11-27 23:22:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128875282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953345767] [2024-11-27 23:22:57,361 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:22:57,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:57,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:57,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:22:57,736 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-27 23:22:57,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:57,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:22:57,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 11426 proven. 865 refuted. 0 times theorem prover too weak. 13848 trivial. 0 not checked. [2024-11-27 23:22:57,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3888 proven. 1940 refuted. 0 times theorem prover too weak. 20311 trivial. 0 not checked. [2024-11-27 23:23:03,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953345767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:03,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:03,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 23] total 28 [2024-11-27 23:23:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501851413] [2024-11-27 23:23:03,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:03,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:23:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:03,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:23:03,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:23:03,354 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-27 23:23:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:03,886 INFO L93 Difference]: Finished difference Result 201 states and 301 transitions. [2024-11-27 23:23:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:23:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) Word has length 665 [2024-11-27 23:23:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:03,891 INFO L225 Difference]: With dead ends: 201 [2024-11-27 23:23:03,891 INFO L226 Difference]: Without dead ends: 111 [2024-11-27 23:23:03,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1314 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 23:23:03,894 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 75 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:03,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 221 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:23:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-27 23:23:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-11-27 23:23:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 9 states have return successors, (43), 16 states have call predecessors, (43), 18 states have call successors, (43) [2024-11-27 23:23:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2024-11-27 23:23:03,910 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 665 [2024-11-27 23:23:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:03,911 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2024-11-27 23:23:03,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-27 23:23:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2024-11-27 23:23:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-27 23:23:03,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:03,915 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:03,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:23:04,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:04,119 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:04,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -45194381, now seen corresponding path program 6 times [2024-11-27 23:23:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785011409] [2024-11-27 23:23:04,120 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:23:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:04,189 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-27 23:23:04,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2024-11-27 23:23:04,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785011409] [2024-11-27 23:23:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785011409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070424320] [2024-11-27 23:23:04,550 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:23:04,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:04,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:04,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:23:04,777 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-27 23:23:04,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:04,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:23:04,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2024-11-27 23:23:04,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 512 proven. 1869 refuted. 0 times theorem prover too weak. 10006 trivial. 0 not checked. [2024-11-27 23:23:07,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070424320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:07,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:07,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 18 [2024-11-27 23:23:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440342663] [2024-11-27 23:23:07,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:07,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:23:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:07,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:23:07,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:23:07,609 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-27 23:23:07,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:07,790 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2024-11-27 23:23:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:23:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 461 [2024-11-27 23:23:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:07,795 INFO L225 Difference]: With dead ends: 106 [2024-11-27 23:23:07,796 INFO L226 Difference]: Without dead ends: 102 [2024-11-27 23:23:07,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 913 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:23:07,797 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:07,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 99 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:23:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-27 23:23:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-27 23:23:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 69 states have internal predecessors, (75), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (53), 18 states have call predecessors, (53), 19 states have call successors, (53) [2024-11-27 23:23:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2024-11-27 23:23:07,852 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 461 [2024-11-27 23:23:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:07,855 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2024-11-27 23:23:07,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-27 23:23:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2024-11-27 23:23:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-11-27 23:23:07,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:07,865 INFO L218 NwaCegarLoop]: trace histogram [141, 141, 114, 70, 70, 70, 70, 70, 70, 70, 44, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:07,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:23:08,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:08,068 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:08,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1817430884, now seen corresponding path program 7 times [2024-11-27 23:23:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884920515] [2024-11-27 23:23:08,069 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:23:08,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2125 proven. 7600 refuted. 0 times theorem prover too weak. 45856 trivial. 0 not checked. [2024-11-27 23:23:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884920515] [2024-11-27 23:23:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884920515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415785697] [2024-11-27 23:23:11,028 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:23:11,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:11,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:11,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:23:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:11,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:23:11,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 28939 proven. 3803 refuted. 0 times theorem prover too weak. 22839 trivial. 0 not checked. [2024-11-27 23:23:11,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2437 proven. 8547 refuted. 0 times theorem prover too weak. 44597 trivial. 0 not checked. [2024-11-27 23:23:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415785697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:19,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-27 23:23:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574457793] [2024-11-27 23:23:19,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:19,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 23:23:19,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:19,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 23:23:19,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:23:19,299 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-27 23:23:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:20,182 INFO L93 Difference]: Finished difference Result 221 states and 366 transitions. [2024-11-27 23:23:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 23:23:20,183 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) Word has length 965 [2024-11-27 23:23:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:20,186 INFO L225 Difference]: With dead ends: 221 [2024-11-27 23:23:20,187 INFO L226 Difference]: Without dead ends: 125 [2024-11-27 23:23:20,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1908 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 23:23:20,190 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 306 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:20,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 213 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:23:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-27 23:23:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2024-11-27 23:23:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (23), 19 states have call predecessors, (23), 10 states have return successors, (58), 18 states have call predecessors, (58), 23 states have call successors, (58) [2024-11-27 23:23:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 172 transitions. [2024-11-27 23:23:20,208 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 172 transitions. Word has length 965 [2024-11-27 23:23:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:20,209 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 172 transitions. [2024-11-27 23:23:20,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-27 23:23:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 172 transitions. [2024-11-27 23:23:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-11-27 23:23:20,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:20,216 INFO L218 NwaCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:20,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:23:20,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:20,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:20,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2070327020, now seen corresponding path program 8 times [2024-11-27 23:23:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677474853] [2024-11-27 23:23:20,421 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:20,580 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:20,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3187 proven. 6174 refuted. 0 times theorem prover too weak. 34253 trivial. 0 not checked. [2024-11-27 23:23:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677474853] [2024-11-27 23:23:22,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677474853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404331547] [2024-11-27 23:23:22,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:22,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:22,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:22,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:22,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:23:23,085 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:23,085 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:23,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 23:23:23,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6599 refuted. 0 times theorem prover too weak. 33280 trivial. 0 not checked. [2024-11-27 23:23:23,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6746 refuted. 0 times theorem prover too weak. 33133 trivial. 0 not checked. [2024-11-27 23:23:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404331547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:31,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:31,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2024-11-27 23:23:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804119580] [2024-11-27 23:23:31,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:31,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 23:23:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:31,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 23:23:31,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:23:31,387 INFO L87 Difference]: Start difference. First operand 121 states and 172 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2024-11-27 23:23:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:32,380 INFO L93 Difference]: Finished difference Result 272 states and 464 transitions. [2024-11-27 23:23:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 23:23:32,380 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) Word has length 856 [2024-11-27 23:23:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:32,384 INFO L225 Difference]: With dead ends: 272 [2024-11-27 23:23:32,384 INFO L226 Difference]: Without dead ends: 157 [2024-11-27 23:23:32,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1688 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1360, Invalid=4340, Unknown=0, NotChecked=0, Total=5700 [2024-11-27 23:23:32,388 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 320 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:32,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 247 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:23:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-27 23:23:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2024-11-27 23:23:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.041237113402062) internal successors, (101), 93 states have internal predecessors, (101), 27 states have call successors, (27), 22 states have call predecessors, (27), 10 states have return successors, (66), 19 states have call predecessors, (66), 27 states have call successors, (66) [2024-11-27 23:23:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 194 transitions. [2024-11-27 23:23:32,423 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 194 transitions. Word has length 856 [2024-11-27 23:23:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:32,425 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 194 transitions. [2024-11-27 23:23:32,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2024-11-27 23:23:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 194 transitions. [2024-11-27 23:23:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2024-11-27 23:23:32,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:32,433 INFO L218 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:32,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:23:32,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:23:32,634 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:32,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash -425340118, now seen corresponding path program 9 times [2024-11-27 23:23:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852264164] [2024-11-27 23:23:32,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:32,926 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-27 23:23:32,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 3489 proven. 9630 refuted. 0 times theorem prover too weak. 19977 trivial. 0 not checked. [2024-11-27 23:23:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852264164] [2024-11-27 23:23:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852264164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382414413] [2024-11-27 23:23:50,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:50,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:50,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:50,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:23:51,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-27 23:23:51,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:51,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-11-27 23:23:51,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-27 23:23:52,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:25,001 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 491 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 23:24:30,220 WARN L286 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 493 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 23:24:35,433 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 493 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 23:25:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-27 23:25:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382414413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:50,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:50,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 28] total 42 [2024-11-27 23:25:50,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217997295] [2024-11-27 23:25:50,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:50,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 23:25:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:50,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 23:25:50,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:25:50,627 INFO L87 Difference]: Start difference. First operand 135 states and 194 transitions. Second operand has 42 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 22 states have internal predecessors, (51), 9 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (28), 28 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-27 23:25:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:50,929 INFO L93 Difference]: Finished difference Result 136 states and 195 transitions. [2024-11-27 23:25:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:25:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 22 states have internal predecessors, (51), 9 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (28), 28 states have call predecessors, (28), 9 states have call successors, (28) Word has length 747 [2024-11-27 23:25:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:50,931 INFO L225 Difference]: With dead ends: 136 [2024-11-27 23:25:50,931 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:25:50,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1716 GetRequests, 1455 SyntacticMatches, 218 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7366 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=320, Invalid=1660, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 23:25:50,935 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:50,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 458 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:25:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:25:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:25:50,937 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) [2024-11-27 23:25:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:25:50,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 747 [2024-11-27 23:25:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:50,937 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:25:50,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 22 states have internal predecessors, (51), 9 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (28), 28 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-27 23:25:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:25:50,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:25:50,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 23:25:50,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:51,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:25:51,149 INFO L422 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2024-11-27 23:25:51,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 23:25:52,861 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:25:52,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:25:52 BoogieIcfgContainer [2024-11-27 23:25:52,867 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:25:52,868 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:25:52,868 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:25:52,868 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:25:52,869 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:41" (3/4) ... [2024-11-27 23:25:52,871 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:25:52,878 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2024-11-27 23:25:52,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-27 23:25:52,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 23:25:52,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 23:25:52,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:25:52,961 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:25:52,962 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:25:52,962 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:25:52,963 INFO L158 Benchmark]: Toolchain (without parser) took 192038.31ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 93.1MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 304.5MB. Max. memory is 16.1GB. [2024-11-27 23:25:52,963 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:52,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.94ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:25:52,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.84ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:52,964 INFO L158 Benchmark]: Boogie Preprocessor took 44.29ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:52,964 INFO L158 Benchmark]: RCFGBuilder took 318.45ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 70.8MB in the end (delta: 9.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:25:52,965 INFO L158 Benchmark]: TraceAbstraction took 191221.50ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 70.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-27 23:25:52,965 INFO L158 Benchmark]: Witness Printer took 94.18ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:25:52,967 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.94ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.84ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.29ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.45ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 70.8MB in the end (delta: 9.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 191221.50ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 70.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 94.18ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 189.4s, OverallIterations: 12, TraceHistogramMax: 141, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1064 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1032 mSDsluCounter, 1830 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1520 mSDsCounter, 1030 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2604 IncrementalHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1030 mSolverCounterUnsat, 310 mSDtfsCounter, 2604 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10152 GetRequests, 9500 SyntacticMatches, 287 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11468 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=11, InterpolantAutomatonStates: 230, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 53 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 177.8s InterpolantComputationTime, 9663 NumberOfCodeBlocks, 7955 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 14451 ConstructedInterpolants, 0 QuantifiedInterpolants, 21041 SizeOfPredicates, 57 NumberOfNonLiveVariables, 8904 ConjunctsInSsa, 370 ConjunctsInUnsatCore, 32 InterpolantComputations, 2 PerfectInterpolantSequences, 511428/587130 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! [2024-11-27 23:25:52,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34d8dd6-2804-4311-b1c3-71e41095a020/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