./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --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_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/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_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/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_aef4f268-ee22-4ca5-881f-963c7663e439/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 b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:55:56,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:55:56,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:55:56,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:55:56,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:55:56,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:55:56,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:55:56,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:55:56,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:55:56,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:55:56,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:55:56,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:55:56,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:55:56,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:55:56,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:55:56,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:55:56,556 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:56,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:56,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:55:56,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:55:56,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:55:56,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:55:56,560 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_aef4f268-ee22-4ca5-881f-963c7663e439/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 -> b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d [2024-11-28 02:55:56,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:55:56,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:55:56,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:55:56,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:55:56,870 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:55:56,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2024-11-28 02:55:59,788 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/data/842b261f7/47a7eb5fcedb418b9c45b3e7a8ae182f/FLAG8222f392e [2024-11-28 02:56:00,051 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:56:00,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2024-11-28 02:56:00,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/data/842b261f7/47a7eb5fcedb418b9c45b3e7a8ae182f/FLAG8222f392e [2024-11-28 02:56:00,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/data/842b261f7/47a7eb5fcedb418b9c45b3e7a8ae182f [2024-11-28 02:56:00,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:56:00,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:56:00,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:00,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:56:00,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:56:00,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fb54b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00, skipping insertion in model container [2024-11-28 02:56:00,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:56:00,257 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_aef4f268-ee22-4ca5-881f-963c7663e439/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2024-11-28 02:56:00,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:00,277 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:56:00,287 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_aef4f268-ee22-4ca5-881f-963c7663e439/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2024-11-28 02:56:00,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:00,305 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:56:00,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00 WrapperNode [2024-11-28 02:56:00,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:00,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:00,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:56:00,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:56:00,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,333 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-11-28 02:56:00,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:00,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:56:00,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:56:00,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:56:00,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,354 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]. [2024-11-28 02:56:00,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,357 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:56:00,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:56:00,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:56:00,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:56:00,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (1/1) ... [2024-11-28 02:56:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:00,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:56:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:56:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:56:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:56:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:56:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:56:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:56:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:56:00,505 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:56:00,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:56:00,647 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-28 02:56:00,648 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:56:00,659 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:56:00,660 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:56:00,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:00 BoogieIcfgContainer [2024-11-28 02:56:00,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:56:00,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:56:00,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:56:00,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:56:00,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:00" (1/3) ... [2024-11-28 02:56:00,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b988062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:00, skipping insertion in model container [2024-11-28 02:56:00,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:00" (2/3) ... [2024-11-28 02:56:00,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b988062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:00, skipping insertion in model container [2024-11-28 02:56:00,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:00" (3/3) ... [2024-11-28 02:56:00,675 INFO L128 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2024-11-28 02:56:00,691 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:56:00,694 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG NetBSD_loop.i that has 2 procedures, 18 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:56:00,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:56:00,771 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;@dea6048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:56:00,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:56:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:56:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:56:00,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:00,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:00,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:00,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash -590573313, now seen corresponding path program 1 times [2024-11-28 02:56:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176997361] [2024-11-28 02:56:00,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:01,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176997361] [2024-11-28 02:56:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176997361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:01,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:56:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198757196] [2024-11-28 02:56:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:01,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:56:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:01,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:56:01,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:56:01,197 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:01,303 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-28 02:56:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:56:01,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 02:56:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:01,311 INFO L225 Difference]: With dead ends: 36 [2024-11-28 02:56:01,311 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 02:56:01,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:56:01,316 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:01,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 50 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:56:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 02:56:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 02:56:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:56:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-28 02:56:01,346 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2024-11-28 02:56:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:01,346 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-28 02:56:01,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-28 02:56:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:56:01,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:01,348 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:56:01,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:01,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1022499361, now seen corresponding path program 1 times [2024-11-28 02:56:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756814355] [2024-11-28 02:56:01,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:56:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756814355] [2024-11-28 02:56:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756814355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:56:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302559446] [2024-11-28 02:56:01,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:01,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:56:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:01,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:56:01,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:56:01,630 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:56:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:01,744 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-28 02:56:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:56:01,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-28 02:56:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:01,747 INFO L225 Difference]: With dead ends: 28 [2024-11-28 02:56:01,747 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 02:56:01,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:56:01,748 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:01,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:56:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 02:56:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-28 02:56:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:56:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-28 02:56:01,768 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 14 [2024-11-28 02:56:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:01,769 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-28 02:56:01,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:56:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-28 02:56:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:56:01,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:01,771 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:01,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:56:01,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:01,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1302887361, now seen corresponding path program 1 times [2024-11-28 02:56:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499760814] [2024-11-28 02:56:01,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:56:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499760814] [2024-11-28 02:56:02,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499760814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138770428] [2024-11-28 02:56:02,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:02,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:02,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:02,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:56:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:02,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:56:02,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:56:02,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:56:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138770428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:02,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 02:56:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450448746] [2024-11-28 02:56:02,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:02,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:56:02,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:02,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:56:02,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:56:02,535 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 10 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 02:56:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:02,635 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-28 02:56:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:56:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 10 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 26 [2024-11-28 02:56:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:02,637 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:56:02,638 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 02:56:02,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:56:02,641 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:02,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:56:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 02:56:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-11-28 02:56:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:56:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-28 02:56:02,655 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 26 [2024-11-28 02:56:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:02,656 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-28 02:56:02,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 10 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 02:56:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-28 02:56:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:56:02,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:02,658 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:56:02,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:56:02,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:02,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:02,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1816703325, now seen corresponding path program 2 times [2024-11-28 02:56:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350262443] [2024-11-28 02:56:02,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:56:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:02,890 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:02,890 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:56:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350262443] [2024-11-28 02:56:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350262443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246082988] [2024-11-28 02:56:03,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:56:03,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:03,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:56:03,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:56:03,087 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:56:03,087 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:56:03,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:56:03,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:56:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:56:03,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:56:03,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246082988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:56:03,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:56:03,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-28 02:56:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500513407] [2024-11-28 02:56:03,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:56:03,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:56:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:03,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:56:03,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:56:03,285 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:56:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:03,339 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-28 02:56:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:56:03,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-28 02:56:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:03,341 INFO L225 Difference]: With dead ends: 37 [2024-11-28 02:56:03,341 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:56:03,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:56:03,342 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:03,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:56:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:56:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:56:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:56:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:56:03,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-11-28 02:56:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:03,346 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:56:03,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:56:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:56:03,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:56:03,349 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:56:03,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:56:03,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:03,555 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-28 02:56:03,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:56:03,718 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:56:03,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:03 BoogieIcfgContainer [2024-11-28 02:56:03,733 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:56:03,734 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:56:03,734 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:56:03,734 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:56:03,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:00" (3/4) ... [2024-11-28 02:56:03,737 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:56:03,742 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:56:03,746 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-28 02:56:03,746 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:56:03,747 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:56:03,747 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:56:03,832 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:56:03,832 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:56:03,832 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:56:03,834 INFO L158 Benchmark]: Toolchain (without parser) took 3754.91ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 111.6MB in the end (delta: 6.1MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2024-11-28 02:56:03,834 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 73.6MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:56:03,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.72ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.4MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:56:03,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.83ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:56:03,835 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 104.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:56:03,835 INFO L158 Benchmark]: RCFGBuilder took 297.25ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 94.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:56:03,837 INFO L158 Benchmark]: TraceAbstraction took 3067.91ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 116.7MB in the end (delta: -22.4MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2024-11-28 02:56:03,837 INFO L158 Benchmark]: Witness Printer took 98.60ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 111.6MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:56:03,839 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 73.6MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.72ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 106.4MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.83ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 105.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 104.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 297.25ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 94.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3067.91ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 116.7MB in the end (delta: -22.4MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. * Witness Printer took 98.60ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 111.6MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 45 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 423 SizeOfPredicates, 4 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 224/245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= glob2_p_off) && (glob2_pathlim_off <= MAXPATHLEN)) && (1 <= MAXPATHLEN)) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:56:03,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef4f268-ee22-4ca5-881f-963c7663e439/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE