./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.c --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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/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 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:48:19,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:48:19,918 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:48:19,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:48:19,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:48:19,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:48:19,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:48:19,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:48:19,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:48:19,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:48:19,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:48:19,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:48:19,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:48:19,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:48:19,959 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:48:19,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:48:19,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:48:19,960 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:48:19,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:48:19,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:48:19,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:48:19,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:48:19,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:48:19,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:48:19,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:48:19,961 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:48:19,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:48:19,962 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:48:19,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:48:19,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:48:19,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:48:19,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:48:19,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:48:19,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:48:19,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:48:19,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:48:19,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:48:19,964 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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/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 -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2024-11-13 14:48:20,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:48:20,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:48:20,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:48:20,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:48:20,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:48:20,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-regression/stateful_check.c Unable to find full path for "g++" [2024-11-13 14:48:22,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:48:23,413 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:48:23,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/sv-benchmarks/c/ldv-regression/stateful_check.c [2024-11-13 14:48:23,435 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/data/ea5955f79/7dd18edff1f64c539beb04e608fccdd4/FLAG9fd278e1f [2024-11-13 14:48:23,467 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/data/ea5955f79/7dd18edff1f64c539beb04e608fccdd4 [2024-11-13 14:48:23,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:48:23,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:48:23,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:48:23,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:48:23,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:48:23,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c90d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23, skipping insertion in model container [2024-11-13 14:48:23,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:48:23,746 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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2024-11-13 14:48:23,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:48:23,824 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:48:23,838 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_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2024-11-13 14:48:23,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:48:23,890 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:48:23,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23 WrapperNode [2024-11-13 14:48:23,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:48:23,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:48:23,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:48:23,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:48:23,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,954 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 103 [2024-11-13 14:48:23,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:48:23,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:48:23,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:48:23,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:48:23,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:23,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,000 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 14:48:24,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:48:24,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:48:24,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:48:24,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:48:24,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (1/1) ... [2024-11-13 14:48:24,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:48:24,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:48:24,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:48:24,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:48:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:48:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2024-11-13 14:48:24,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2024-11-13 14:48:24,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:48:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-13 14:48:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-13 14:48:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:48:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:48:24,232 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:48:24,237 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:48:24,554 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-13 14:48:24,554 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:48:24,581 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:48:24,581 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:48:24,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:48:24 BoogieIcfgContainer [2024-11-13 14:48:24,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:48:24,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:48:24,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:48:24,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:48:24,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:48:23" (1/3) ... [2024-11-13 14:48:24,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7353c0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:48:24, skipping insertion in model container [2024-11-13 14:48:24,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:48:23" (2/3) ... [2024-11-13 14:48:24,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7353c0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:48:24, skipping insertion in model container [2024-11-13 14:48:24,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:48:24" (3/3) ... [2024-11-13 14:48:24,600 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2024-11-13 14:48:24,624 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:48:24,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG stateful_check.c that has 3 procedures, 46 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:48:24,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:48:24,740 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;@6bd4835e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:48:24,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:48:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 41 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 14:48:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:48:24,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:24,756 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:24,756 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:24,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2031565545, now seen corresponding path program 1 times [2024-11-13 14:48:24,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:24,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180540787] [2024-11-13 14:48:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:24,968 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 14:48:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180540787] [2024-11-13 14:48:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180540787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:24,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:48:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844287359] [2024-11-13 14:48:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:24,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:48:24,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:48:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:48:25,026 INFO L87 Difference]: Start difference. First operand has 46 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 41 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:48:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:25,076 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2024-11-13 14:48:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:48:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2024-11-13 14:48:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:25,090 INFO L225 Difference]: With dead ends: 87 [2024-11-13 14:48:25,091 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 14:48:25,098 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 14:48:25,102 INFO L432 NwaCegarLoop]: 59 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, 59 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 14:48:25,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:48:25,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 14:48:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 14:48:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.4375) internal successors, (46), 35 states have internal predecessors, (46), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:48:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2024-11-13 14:48:25,172 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 8 [2024-11-13 14:48:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:25,173 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2024-11-13 14:48:25,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14:48:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2024-11-13 14:48:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:48:25,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:25,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:25,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:48:25,176 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash 130906102, now seen corresponding path program 1 times [2024-11-13 14:48:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744068546] [2024-11-13 14:48:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:25,294 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 14:48:25,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:25,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744068546] [2024-11-13 14:48:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744068546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:25,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:25,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:48:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347902143] [2024-11-13 14:48:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:25,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:48:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:48:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:48:25,298 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:48:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:25,343 INFO L93 Difference]: Finished difference Result 68 states and 97 transitions. [2024-11-13 14:48:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:48:25,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 14:48:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:25,354 INFO L225 Difference]: With dead ends: 68 [2024-11-13 14:48:25,354 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 14:48:25,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:48:25,358 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 33 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:25,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 98 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:48:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 14:48:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-13 14:48:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 55 states have internal predecessors, (77), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:48:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 90 transitions. [2024-11-13 14:48:25,383 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 90 transitions. Word has length 9 [2024-11-13 14:48:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:25,384 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 90 transitions. [2024-11-13 14:48:25,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:48:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 90 transitions. [2024-11-13 14:48:25,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:48:25,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:25,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:48:25,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:48:25,388 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:25,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -323292100, now seen corresponding path program 1 times [2024-11-13 14:48:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215814451] [2024-11-13 14:48:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:25,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:48:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:48:25,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:25,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215814451] [2024-11-13 14:48:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215814451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:48:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:48:25,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:48:25,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494674833] [2024-11-13 14:48:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:48:25,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:48:25,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:48:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:48:25,639 INFO L87 Difference]: Start difference. First operand 62 states and 90 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:48:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:25,876 INFO L93 Difference]: Finished difference Result 148 states and 223 transitions. [2024-11-13 14:48:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:48:25,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-13 14:48:25,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:25,879 INFO L225 Difference]: With dead ends: 148 [2024-11-13 14:48:25,879 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 14:48:25,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:48:25,884 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:25,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 118 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:48:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 14:48:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2024-11-13 14:48:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 79 states have internal predecessors, (112), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:48:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 125 transitions. [2024-11-13 14:48:25,919 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 125 transitions. Word has length 20 [2024-11-13 14:48:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:25,920 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 125 transitions. [2024-11-13 14:48:25,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:48:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2024-11-13 14:48:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:48:25,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:25,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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 14:48:25,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:48:25,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:25,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1731661140, now seen corresponding path program 1 times [2024-11-13 14:48:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398555373] [2024-11-13 14:48:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 14:48:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:48:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:48:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398555373] [2024-11-13 14:48:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398555373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:48:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148588229] [2024-11-13 14:48:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:26,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:26,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:48:26,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:48:26,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:48:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:48:26,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:48:26,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:48:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:48:26,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:48:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:48:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148588229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:48:26,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:48:26,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2024-11-13 14:48:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195183656] [2024-11-13 14:48:26,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:48:26,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:48:26,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:48:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:48:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:48:26,532 INFO L87 Difference]: Start difference. First operand 86 states and 125 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:48:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:48:26,806 INFO L93 Difference]: Finished difference Result 253 states and 388 transitions. [2024-11-13 14:48:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:48:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-13 14:48:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:48:26,810 INFO L225 Difference]: With dead ends: 253 [2024-11-13 14:48:26,810 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:48:26,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:48:26,812 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:48:26,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 232 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:48:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:48:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2024-11-13 14:48:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 148 states have (on average 1.5472972972972974) internal successors, (229), 151 states have internal predecessors, (229), 8 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:48:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 242 transitions. [2024-11-13 14:48:26,855 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 242 transitions. Word has length 27 [2024-11-13 14:48:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:48:26,855 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 242 transitions. [2024-11-13 14:48:26,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:48:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 242 transitions. [2024-11-13 14:48:26,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:48:26,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:48:26,861 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2024-11-13 14:48:26,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:48:27,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:48:27,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:48:27,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:48:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1438401111, now seen corresponding path program 1 times [2024-11-13 14:48:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:48:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931147724] [2024-11-13 14:48:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:48:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:48:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:48:27,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:48:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:48:27,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:48:27,216 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:48:27,218 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:48:27,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:48:27,224 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-13 14:48:27,262 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:48:27,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:48:27 BoogieIcfgContainer [2024-11-13 14:48:27,266 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:48:27,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:48:27,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:48:27,267 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:48:27,268 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:48:24" (3/4) ... [2024-11-13 14:48:27,269 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 14:48:27,336 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:48:27,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:48:27,338 INFO L158 Benchmark]: Toolchain (without parser) took 3864.02ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 52.1MB in the end (delta: 40.3MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2024-11-13 14:48:27,341 INFO L158 Benchmark]: CDTParser took 1.54ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:48:27,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.88ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:48:27,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.67ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:48:27,342 INFO L158 Benchmark]: Boogie Preprocessor took 77.90ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:48:27,342 INFO L158 Benchmark]: RCFGBuilder took 547.07ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 66.0MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:48:27,343 INFO L158 Benchmark]: TraceAbstraction took 2678.63ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 54.2MB in the end (delta: 11.3MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-13 14:48:27,343 INFO L158 Benchmark]: Witness Printer took 69.99ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 52.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:48:27,348 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.88ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.67ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 77.90ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 78.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 547.07ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 66.0MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2678.63ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 54.2MB in the end (delta: 11.3MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Witness Printer took 69.99ms. Allocated memory is still 117.4MB. Free memory was 54.2MB in the beginning and 52.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; [L13] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L84] CALL misc_open() [L59] COND TRUE __VERIFIER_nondet_int() [L61] return 1; VAL [\result=1, ldv_mutex=1, open_called=0] [L84] RET misc_open() [L85] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L92] CALL misc_read() [L54] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L92] RET misc_read() [L93] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L100] CALL misc_llseek() [L50] return 0; VAL [\result=0, ldv_mutex=1, open_called=0] [L100] RET misc_llseek() [L101] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L106] case 3: [L108] CALL misc_release() [L36] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L43] CALL mutex_lock() VAL [\old(ldv_mutex)=1, ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, ldv_mutex=2, open_called=0] [L43] RET mutex_lock() VAL [ldv_mutex=2, open_called=0] [L44] CALL mutex_lock() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L18] CALL __blast_assert() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] [L6] reach_error() VAL [\old(ldv_mutex)=2, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 507 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 202 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/13 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-13 14:48:27,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d6f5230-65a3-4902-bbdb-5eb71d7b81df/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE