./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd --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 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:28:59,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:28:59,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:28:59,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:28:59,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:29:00,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:29:00,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:29:00,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:29:00,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:29:00,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:29:00,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:29:00,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:29:00,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:29:00,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:29:00,032 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:29:00,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:29:00,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:29:00,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:29:00,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:29:00,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:29:00,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:29:00,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:29:00,035 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:29:00,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:29:00,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:29:00,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:29:00,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:29:00,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:29:00,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:29:00,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:29:00,037 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_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd 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 -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 [2024-11-13 14:29:00,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:29:00,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:29:00,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:29:00,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:29:00,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:29:00,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i Unable to find full path for "g++" [2024-11-13 14:29:02,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:29:03,008 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:29:03,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-11-13 14:29:03,029 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/data/00a41699f/37d28a0cb2644fd38568b867b2c5fe71/FLAGc0092ddee [2024-11-13 14:29:03,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/data/00a41699f/37d28a0cb2644fd38568b867b2c5fe71 [2024-11-13 14:29:03,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:29:03,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:29:03,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:29:03,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:29:03,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:29:03,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576fccb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03, skipping insertion in model container [2024-11-13 14:29:03,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,096 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:29:03,242 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_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2024-11-13 14:29:03,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:29:03,266 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:29:03,276 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_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2024-11-13 14:29:03,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:29:03,298 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:29:03,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03 WrapperNode [2024-11-13 14:29:03,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:29:03,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:29:03,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:29:03,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:29:03,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,327 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2024-11-13 14:29:03,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:29:03,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:29:03,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:29:03,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:29:03,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,349 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]. [2024-11-13 14:29:03,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:29:03,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:29:03,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:29:03,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:29:03,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (1/1) ... [2024-11-13 14:29:03,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:29:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:03,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:29:03,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:29:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:29:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:29:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:29:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:29:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:29:03,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:29:03,515 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:29:03,517 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:29:03,668 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 14:29:03,668 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:29:03,680 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:29:03,681 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:29:03,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:29:03 BoogieIcfgContainer [2024-11-13 14:29:03,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:29:03,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:29:03,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:29:03,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:29:03,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:29:03" (1/3) ... [2024-11-13 14:29:03,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e703ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:29:03, skipping insertion in model container [2024-11-13 14:29:03,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:03" (2/3) ... [2024-11-13 14:29:03,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e703ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:29:03, skipping insertion in model container [2024-11-13 14:29:03,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:29:03" (3/3) ... [2024-11-13 14:29:03,695 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-11-13 14:29:03,715 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:29:03,716 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sendmail-close-angle.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:29:03,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:29:03,808 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;@52fcccea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:29:03,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:29:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.4) internal successors, (28), 22 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:29:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:29:03,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:03,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:03,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:03,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash -168376210, now seen corresponding path program 1 times [2024-11-13 14:29:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639806455] [2024-11-13 14:29:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:03,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:03,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639806455] [2024-11-13 14:29:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639806455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:29:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663469574] [2024-11-13 14:29:03,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:03,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:29:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:29:04,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:29:04,017 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.4) internal successors, (28), 22 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-13 14:29:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:04,042 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-11-13 14:29:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:29:04,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11 [2024-11-13 14:29:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:04,054 INFO L225 Difference]: With dead ends: 56 [2024-11-13 14:29:04,057 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 14:29:04,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:29:04,066 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:04,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:29:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 14:29:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-13 14:29:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 14:29:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2024-11-13 14:29:04,108 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 11 [2024-11-13 14:29:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:04,109 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-11-13 14:29:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-13 14:29:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2024-11-13 14:29:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:29:04,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:04,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:04,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:29:04,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:04,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1512414945, now seen corresponding path program 1 times [2024-11-13 14:29:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825124344] [2024-11-13 14:29:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:04,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:04,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825124344] [2024-11-13 14:29:04,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825124344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:29:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621281914] [2024-11-13 14:29:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:04,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:29:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:29:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:29:04,365 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-13 14:29:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:04,481 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-11-13 14:29:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:29:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 12 [2024-11-13 14:29:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:04,483 INFO L225 Difference]: With dead ends: 32 [2024-11-13 14:29:04,483 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 14:29:04,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:29:04,485 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:04,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:29:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 14:29:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 14:29:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 14:29:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-13 14:29:04,503 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 12 [2024-11-13 14:29:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:04,503 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-13 14:29:04,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-13 14:29:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-13 14:29:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:29:04,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:04,504 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:04,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:29:04,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:04,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1026997797, now seen corresponding path program 1 times [2024-11-13 14:29:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133261117] [2024-11-13 14:29:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:04,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:29:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:04,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133261117] [2024-11-13 14:29:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133261117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:29:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160547397] [2024-11-13 14:29:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:04,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:29:04,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:29:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:29:04,706 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-13 14:29:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:04,895 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2024-11-13 14:29:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:29:04,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 17 [2024-11-13 14:29:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:04,898 INFO L225 Difference]: With dead ends: 45 [2024-11-13 14:29:04,898 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 14:29:04,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:29:04,900 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:04,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 103 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:29:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 14:29:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-13 14:29:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:29:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2024-11-13 14:29:04,922 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 17 [2024-11-13 14:29:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2024-11-13 14:29:04,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-13 14:29:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2024-11-13 14:29:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:29:04,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:04,926 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:04,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:29:04,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:04,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -716724822, now seen corresponding path program 1 times [2024-11-13 14:29:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717691610] [2024-11-13 14:29:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:29:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717691610] [2024-11-13 14:29:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717691610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:05,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:05,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:29:05,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529399956] [2024-11-13 14:29:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:05,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:29:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:05,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:29:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:29:05,192 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:29:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:05,332 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-11-13 14:29:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:29:05,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-11-13 14:29:05,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:05,334 INFO L225 Difference]: With dead ends: 52 [2024-11-13 14:29:05,336 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 14:29:05,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:29:05,337 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 13 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:05,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 196 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:29:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 14:29:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-13 14:29:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 14:29:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-13 14:29:05,355 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 25 [2024-11-13 14:29:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:05,355 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-13 14:29:05,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:29:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-13 14:29:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:29:05,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:05,356 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:05,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:29:05,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:05,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1893159123, now seen corresponding path program 1 times [2024-11-13 14:29:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671795410] [2024-11-13 14:29:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:29:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:29:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:29:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:29:05,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:05,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671795410] [2024-11-13 14:29:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671795410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:05,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:29:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854135494] [2024-11-13 14:29:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:05,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:29:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:29:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:29:05,537 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:29:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:05,744 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-11-13 14:29:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:29:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-13 14:29:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:05,747 INFO L225 Difference]: With dead ends: 71 [2024-11-13 14:29:05,747 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 14:29:05,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:29:05,748 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:05,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 91 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:29:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 14:29:05,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-11-13 14:29:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:29:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-11-13 14:29:05,776 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 28 [2024-11-13 14:29:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:05,776 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-11-13 14:29:05,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:29:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-11-13 14:29:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:29:05,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:05,778 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:05,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:29:05,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:05,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash 637398192, now seen corresponding path program 1 times [2024-11-13 14:29:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:05,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557667850] [2024-11-13 14:29:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:29:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:29:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557667850] [2024-11-13 14:29:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557667850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:29:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199421908] [2024-11-13 14:29:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:05,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:29:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:29:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:29:05,931 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:29:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:06,165 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2024-11-13 14:29:06,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:29:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-13 14:29:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:06,168 INFO L225 Difference]: With dead ends: 73 [2024-11-13 14:29:06,168 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 14:29:06,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:29:06,169 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 50 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:06,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:29:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 14:29:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-13 14:29:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.119047619047619) internal successors, (47), 45 states have internal predecessors, (47), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 14:29:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-11-13 14:29:06,198 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 30 [2024-11-13 14:29:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:06,199 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-11-13 14:29:06,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:29:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-11-13 14:29:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:29:06,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:06,202 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:06,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:29:06,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:06,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1491907647, now seen corresponding path program 1 times [2024-11-13 14:29:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:06,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868538175] [2024-11-13 14:29:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:29:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:29:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 14:29:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 14:29:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 14:29:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:29:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868538175] [2024-11-13 14:29:06,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868538175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416098156] [2024-11-13 14:29:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:06,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:06,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:06,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:06,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:29:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:06,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:29:06,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 14:29:07,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 14:29:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416098156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:07,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 19 [2024-11-13 14:29:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615445496] [2024-11-13 14:29:07,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:07,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:29:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:29:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:29:07,503 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 14:29:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:08,064 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-11-13 14:29:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:29:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 53 [2024-11-13 14:29:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:08,068 INFO L225 Difference]: With dead ends: 103 [2024-11-13 14:29:08,068 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 14:29:08,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:29:08,070 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:08,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 185 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 14:29:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 14:29:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 58 states have internal predecessors, (60), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:29:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2024-11-13 14:29:08,094 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 53 [2024-11-13 14:29:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:08,096 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2024-11-13 14:29:08,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.5625) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-13 14:29:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2024-11-13 14:29:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:29:08,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:08,098 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:08,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:29:08,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:29:08,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:08,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1121524706, now seen corresponding path program 1 times [2024-11-13 14:29:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050440897] [2024-11-13 14:29:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:29:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:29:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:29:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:29:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 14:29:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:29:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050440897] [2024-11-13 14:29:08,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050440897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001722654] [2024-11-13 14:29:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:08,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:08,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:08,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:29:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:29:08,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:29:09,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:29:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001722654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:09,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-13 14:29:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822312930] [2024-11-13 14:29:09,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:09,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:29:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:29:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:29:09,269 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-13 14:29:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:09,522 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2024-11-13 14:29:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:29:09,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 55 [2024-11-13 14:29:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:09,526 INFO L225 Difference]: With dead ends: 94 [2024-11-13 14:29:09,526 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 14:29:09,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 111 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:29:09,527 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:09,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 175 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:29:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 14:29:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 14:29:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 61 states have internal predecessors, (63), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:29:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2024-11-13 14:29:09,564 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 55 [2024-11-13 14:29:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:09,565 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2024-11-13 14:29:09,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-13 14:29:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2024-11-13 14:29:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:29:09,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:09,569 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:09,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:29:09,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:29:09,770 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:09,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2106819696, now seen corresponding path program 2 times [2024-11-13 14:29:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:09,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411665282] [2024-11-13 14:29:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:29:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:29:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:29:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:29:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 14:29:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:29:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 14:29:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 14:29:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 14:29:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 48 proven. 24 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-13 14:29:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411665282] [2024-11-13 14:29:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411665282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:10,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144751803] [2024-11-13 14:29:10,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:29:10,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:10,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:10,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:29:10,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:29:10,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:10,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:29:10,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 14:29:10,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 14:29:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144751803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:11,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-13 14:29:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229891625] [2024-11-13 14:29:11,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:11,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:29:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:29:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:29:11,297 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 10 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-13 14:29:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:12,198 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2024-11-13 14:29:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:29:12,199 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 10 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) Word has length 80 [2024-11-13 14:29:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:12,200 INFO L225 Difference]: With dead ends: 103 [2024-11-13 14:29:12,201 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 14:29:12,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=1174, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 14:29:12,203 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 141 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:12,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 196 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:29:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 14:29:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2024-11-13 14:29:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 64 states have internal predecessors, (66), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-13 14:29:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2024-11-13 14:29:12,227 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 80 [2024-11-13 14:29:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:12,227 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2024-11-13 14:29:12,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 10 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-13 14:29:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2024-11-13 14:29:12,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 14:29:12,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:12,229 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:12,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:29:12,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:12,433 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:29:12,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2075198463, now seen corresponding path program 2 times [2024-11-13 14:29:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:29:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98882713] [2024-11-13 14:29:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:29:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:29:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:29:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:29:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 14:29:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:29:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 14:29:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 14:29:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:12,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:29:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 14:29:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 14:29:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 14:29:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 14:29:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 14:29:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-13 14:29:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-13 14:29:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 56 proven. 49 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-13 14:29:13,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:29:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98882713] [2024-11-13 14:29:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98882713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830176486] [2024-11-13 14:29:13,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:29:13,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:13,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:13,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:13,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:29:13,165 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:29:13,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:13,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:29:13,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 64 proven. 69 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2024-11-13 14:29:13,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 71 proven. 62 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2024-11-13 14:29:13,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830176486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:13,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:13,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 20 [2024-11-13 14:29:13,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940021443] [2024-11-13 14:29:13,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:13,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:29:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:29:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:29:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:29:13,776 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-13 14:29:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:14,303 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2024-11-13 14:29:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:29:14,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) Word has length 103 [2024-11-13 14:29:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:14,304 INFO L225 Difference]: With dead ends: 107 [2024-11-13 14:29:14,304 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:29:14,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:29:14,306 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:14,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 353 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:29:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:29:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:29:14,310 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) [2024-11-13 14:29:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:29:14,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-11-13 14:29:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:14,310 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:29:14,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-13 14:29:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:29:14,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:29:14,314 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:29:14,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:29:14,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:29:14,519 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:29:14,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 14:29:15,604 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:29:15,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:29:15 BoogieIcfgContainer [2024-11-13 14:29:15,636 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:29:15,637 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:29:15,637 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:29:15,638 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:29:15,639 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:29:03" (3/4) ... [2024-11-13 14:29:15,641 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:29:15,647 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-13 14:29:15,650 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-13 14:29:15,650 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 14:29:15,650 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 14:29:15,651 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:29:15,742 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:29:15,742 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 14:29:15,742 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:29:15,743 INFO L158 Benchmark]: Toolchain (without parser) took 12680.82ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 118.4MB in the beginning and 84.7MB in the end (delta: 33.7MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2024-11-13 14:29:15,743 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:29:15,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.72ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 107.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:29:15,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.38ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 106.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:29:15,744 INFO L158 Benchmark]: Boogie Preprocessor took 32.14ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 105.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:29:15,745 INFO L158 Benchmark]: RCFGBuilder took 320.68ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 94.0MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:29:15,745 INFO L158 Benchmark]: TraceAbstraction took 11951.42ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 93.6MB in the beginning and 88.3MB in the end (delta: 5.3MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2024-11-13 14:29:15,745 INFO L158 Benchmark]: Witness Printer took 104.71ms. Allocated memory is still 176.2MB. Free memory was 88.3MB in the beginning and 84.7MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:29:15,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.72ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 107.3MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.38ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 106.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.14ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 105.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 320.68ms. Allocated memory is still 142.6MB. Free memory was 104.8MB in the beginning and 94.0MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11951.42ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 93.6MB in the beginning and 88.3MB in the end (delta: 5.3MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. * Witness Printer took 104.71ms. Allocated memory is still 176.2MB. Free memory was 88.3MB in the beginning and 84.7MB in the end (delta: 3.6MB). 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 10, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 425 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 385 mSDsluCounter, 1580 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1279 mSDsCounter, 309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1189 IncrementalHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 309 mSolverCounterUnsat, 301 mSDtfsCounter, 1189 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 793 GetRequests, 639 SyntacticMatches, 18 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=9, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 705 NumberOfCodeBlocks, 705 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 978 ConstructedInterpolants, 0 QuantifiedInterpolants, 3165 SizeOfPredicates, 14 NumberOfNonLiveVariables, 618 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2594/2923 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((buf == 0) && (bufferlen == ((long long) 2 + buflim))) && (0 <= buflim)) && (((long long) 3 + buflim) <= inlen)) && (in == 0)) || (((((((((long long) bufferlen + in) + 1) <= ((long long) buf + inlen)) && (((long long) bufferlen + 1) <= inlen)) && (bufferlen == ((long long) 2 + buflim))) && (1 <= in)) && (buf <= buflim)) && (0 <= buf))) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-13 14:29:15,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe4ab2d7-a95e-4ddc-ae70-8fad9a536742/bin/uautomizer-verify-qhAvR1uOyd/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