./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:49:07,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:49:07,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:49:07,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:49:07,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:49:07,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:49:07,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:49:07,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:49:07,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:49:07,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:49:07,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:49:07,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:49:07,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:49:07,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:49:07,464 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:49:07,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:49:07,465 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:49:07,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:49:07,466 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:49:07,466 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:49:07,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:49:07,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:49:07,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:49:07,467 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:49:07,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:49:07,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:49:07,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:49:07,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:07,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:49:07,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:07,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:49:07,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:49:07,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:49:07,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:49:07,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:49:07,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:49:07,470 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_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2024-11-24 01:49:07,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:49:07,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:49:07,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:49:07,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:49:07,850 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:49:07,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-11-24 01:49:11,003 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/data/555788279/cc480f149e3b481aa5e33786cb2deab2/FLAG4afa6f4ac [2024-11-24 01:49:11,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:49:11,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-11-24 01:49:11,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/data/555788279/cc480f149e3b481aa5e33786cb2deab2/FLAG4afa6f4ac [2024-11-24 01:49:11,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/data/555788279/cc480f149e3b481aa5e33786cb2deab2 [2024-11-24 01:49:11,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:49:11,425 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:49:11,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:49:11,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:49:11,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:49:11,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:49:11" (1/1) ... [2024-11-24 01:49:11,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342b7328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:11, skipping insertion in model container [2024-11-24 01:49:11,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:49:11" (1/1) ... [2024-11-24 01:49:11,484 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:49:11,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:49:11,909 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:49:11,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:49:12,036 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:49:12,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12 WrapperNode [2024-11-24 01:49:12,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:49:12,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:49:12,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:49:12,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:49:12,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,082 INFO L138 Inliner]: procedures = 162, calls = 77, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2024-11-24 01:49:12,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:49:12,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:49:12,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:49:12,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:49:12,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,112 INFO L175 MemorySlicer]: Split 66 memory accesses to 2 slices as follows [16, 50]. 76 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [10, 50]. The 3 writes are split as follows [3, 0]. [2024-11-24 01:49:12,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:49:12,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:49:12,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:49:12,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:49:12,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (1/1) ... [2024-11-24 01:49:12,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:49:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:12,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:49:12,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:49:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:49:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:49:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 01:49:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:49:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 01:49:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:49:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:49:12,203 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:49:12,326 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:49:12,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:49:12,787 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:49:12,787 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:49:13,424 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:49:13,425 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:49:13,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:49:13 BoogieIcfgContainer [2024-11-24 01:49:13,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:49:13,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:49:13,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:49:13,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:49:13,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:49:11" (1/3) ... [2024-11-24 01:49:13,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:49:13, skipping insertion in model container [2024-11-24 01:49:13,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:49:12" (2/3) ... [2024-11-24 01:49:13,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:49:13, skipping insertion in model container [2024-11-24 01:49:13,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:49:13" (3/3) ... [2024-11-24 01:49:13,441 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2024-11-24 01:49:13,459 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:49:13,462 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_23-idxsense_nr.i that has 2 procedures, 39 locations, 1 initial locations, 1 loop locations, and 13 error locations. [2024-11-24 01:49:13,462 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:49:13,527 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 01:49:13,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 82 flow [2024-11-24 01:49:13,638 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2024-11-24 01:49:13,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:49:13,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2024-11-24 01:49:13,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 82 flow [2024-11-24 01:49:13,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 79 flow [2024-11-24 01:49:13,667 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:49:13,693 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=None, 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;@4c0052c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:49:13,693 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-24 01:49:13,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:49:13,713 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-24 01:49:13,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:49:13,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:13,714 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:13,714 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:13,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 487645681, now seen corresponding path program 1 times [2024-11-24 01:49:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901399985] [2024-11-24 01:49:13,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901399985] [2024-11-24 01:49:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901399985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:14,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:14,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:49:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858612207] [2024-11-24 01:49:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:14,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:14,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:14,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:14,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-11-24 01:49:14,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-24 01:49:14,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:14,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-11-24 01:49:14,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:14,364 INFO L124 PetriNetUnfolderBase]: 56/188 cut-off events. [2024-11-24 01:49:14,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:49:14,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 188 events. 56/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 55 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 309. Up to 131 conditions per place. [2024-11-24 01:49:14,369 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-24 01:49:14,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 123 flow [2024-11-24 01:49:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:49:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-24 01:49:14,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2024-11-24 01:49:14,387 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 79 flow. Second operand 3 states and 79 transitions. [2024-11-24 01:49:14,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 123 flow [2024-11-24 01:49:14,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:49:14,399 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 90 flow [2024-11-24 01:49:14,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-24 01:49:14,411 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-24 01:49:14,412 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 90 flow [2024-11-24 01:49:14,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-24 01:49:14,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:14,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:14,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:49:14,414 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:14,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 296383730, now seen corresponding path program 1 times [2024-11-24 01:49:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:14,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627418621] [2024-11-24 01:49:14,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:14,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627418621] [2024-11-24 01:49:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627418621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:49:14,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394806121] [2024-11-24 01:49:14,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:14,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:14,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:14,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:49:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:49:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:14,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:49:14,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:14,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:14,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394806121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:14,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:14,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-24 01:49:14,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979444523] [2024-11-24 01:49:14,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:14,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:49:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:14,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:49:14,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:49:14,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-11-24 01:49:14,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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) [2024-11-24 01:49:14,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:14,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-11-24 01:49:14,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:15,206 INFO L124 PetriNetUnfolderBase]: 56/191 cut-off events. [2024-11-24 01:49:15,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:49:15,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 191 events. 56/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 755 event pairs, 55 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 328. Up to 131 conditions per place. [2024-11-24 01:49:15,211 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-11-24 01:49:15,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 150 flow [2024-11-24 01:49:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:49:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:49:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-24 01:49:15,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-24 01:49:15,215 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 90 flow. Second operand 6 states and 141 transitions. [2024-11-24 01:49:15,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 150 flow [2024-11-24 01:49:15,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 146 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 01:49:15,221 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-11-24 01:49:15,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-24 01:49:15,225 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-11-24 01:49:15,225 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-11-24 01:49:15,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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) [2024-11-24 01:49:15,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:15,226 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:15,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:49:15,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:15,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:15,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:15,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1079908913, now seen corresponding path program 2 times [2024-11-24 01:49:15,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:15,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631494677] [2024-11-24 01:49:15,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:15,467 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:15,467 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 01:49:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631494677] [2024-11-24 01:49:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631494677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:15,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:49:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398590048] [2024-11-24 01:49:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:15,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:15,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:15,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:15,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-24 01:49:15,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-24 01:49:15,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:15,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-24 01:49:15,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:15,802 INFO L124 PetriNetUnfolderBase]: 56/173 cut-off events. [2024-11-24 01:49:15,802 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:49:15,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 173 events. 56/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 612 event pairs, 55 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 301. Up to 134 conditions per place. [2024-11-24 01:49:15,807 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 23 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-11-24 01:49:15,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 158 flow [2024-11-24 01:49:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:49:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-24 01:49:15,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-24 01:49:15,809 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 3 states and 65 transitions. [2024-11-24 01:49:15,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 158 flow [2024-11-24 01:49:15,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 144 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-24 01:49:15,814 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 98 flow [2024-11-24 01:49:15,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-11-24 01:49:15,815 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-24 01:49:15,816 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 98 flow [2024-11-24 01:49:15,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-24 01:49:15,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:15,816 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:15,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:49:15,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:15,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1079908914, now seen corresponding path program 1 times [2024-11-24 01:49:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:15,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850322809] [2024-11-24 01:49:15,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:15,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850322809] [2024-11-24 01:49:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850322809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:49:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736851818] [2024-11-24 01:49:16,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:16,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:16,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:49:16,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:49:16,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:49:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:16,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:49:16,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:49:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:16,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:49:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736851818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:49:16,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:49:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-24 01:49:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106726276] [2024-11-24 01:49:16,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:49:16,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:49:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:16,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:49:16,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:49:16,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-11-24 01:49:16,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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) [2024-11-24 01:49:16,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:16,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-11-24 01:49:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:16,607 INFO L124 PetriNetUnfolderBase]: 56/179 cut-off events. [2024-11-24 01:49:16,607 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-24 01:49:16,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 179 events. 56/179 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 614 event pairs, 55 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 341. Up to 131 conditions per place. [2024-11-24 01:49:16,609 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-11-24 01:49:16,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 194 flow [2024-11-24 01:49:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:49:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:49:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 264 transitions. [2024-11-24 01:49:16,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-24 01:49:16,615 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 98 flow. Second operand 12 states and 264 transitions. [2024-11-24 01:49:16,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 194 flow [2024-11-24 01:49:16,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:49:16,621 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 181 flow [2024-11-24 01:49:16,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=181, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-11-24 01:49:16,621 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-24 01:49:16,622 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 181 flow [2024-11-24 01:49:16,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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) [2024-11-24 01:49:16,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:16,624 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:16,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:49:16,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:49:16,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:16,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2127203694, now seen corresponding path program 2 times [2024-11-24 01:49:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:16,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411774120] [2024-11-24 01:49:16,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:49:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:16,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:49:16,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:49:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-24 01:49:17,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:17,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411774120] [2024-11-24 01:49:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411774120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:17,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:17,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:49:17,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114523760] [2024-11-24 01:49:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:17,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:17,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:17,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:17,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-24 01:49:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-24 01:49:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-24 01:49:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:17,180 INFO L124 PetriNetUnfolderBase]: 56/161 cut-off events. [2024-11-24 01:49:17,180 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-24 01:49:17,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 161 events. 56/161 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 491 event pairs, 55 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 346. Up to 140 conditions per place. [2024-11-24 01:49:17,182 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 28 selfloop transitions, 1 changer transitions 1/36 dead transitions. [2024-11-24 01:49:17,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 36 transitions, 229 flow [2024-11-24 01:49:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:49:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-24 01:49:17,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-24 01:49:17,184 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 181 flow. Second operand 3 states and 65 transitions. [2024-11-24 01:49:17,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 36 transitions, 229 flow [2024-11-24 01:49:17,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 36 transitions, 181 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-24 01:49:17,189 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 121 flow [2024-11-24 01:49:17,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2024-11-24 01:49:17,190 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-11-24 01:49:17,190 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 121 flow [2024-11-24 01:49:17,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-24 01:49:17,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:49:17,190 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:17,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:49:17,191 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-24 01:49:17,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1569119296, now seen corresponding path program 1 times [2024-11-24 01:49:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218177103] [2024-11-24 01:49:17,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-24 01:49:17,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218177103] [2024-11-24 01:49:17,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218177103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:17,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:17,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:49:17,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187418855] [2024-11-24 01:49:17,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:17,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:17,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:17,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:17,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:17,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-11-24 01:49:17,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-24 01:49:17,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:49:17,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-11-24 01:49:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:49:17,456 INFO L124 PetriNetUnfolderBase]: 51/144 cut-off events. [2024-11-24 01:49:17,456 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-24 01:49:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 144 events. 51/144 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 423 event pairs, 50 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 295. Up to 129 conditions per place. [2024-11-24 01:49:17,458 INFO L140 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-11-24 01:49:17,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 177 flow [2024-11-24 01:49:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:49:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-24 01:49:17,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2024-11-24 01:49:17,459 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 121 flow. Second operand 3 states and 74 transitions. [2024-11-24 01:49:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 177 flow [2024-11-24 01:49:17,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:49:17,463 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-11-24 01:49:17,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-11-24 01:49:17,464 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-24 01:49:17,464 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-11-24 01:49:17,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-24 01:49:17,469 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-24 01:49:17,470 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-24 01:49:17,471 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-24 01:49:17,473 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-24 01:49:17,473 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-24 01:49:17,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:49:17,474 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-24 01:49:17,480 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 01:49:17,480 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:49:17,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:49:17 BasicIcfg [2024-11-24 01:49:17,490 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:49:17,492 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:49:17,492 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:49:17,492 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:49:17,493 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:49:13" (3/4) ... [2024-11-24 01:49:17,495 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 01:49:17,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-24 01:49:17,507 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2024-11-24 01:49:17,508 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-24 01:49:17,508 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-24 01:49:17,508 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 01:49:17,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:49:17,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:49:17,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:49:17,616 INFO L158 Benchmark]: Toolchain (without parser) took 6190.81ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 60.7MB in the end (delta: 30.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2024-11-24 01:49:17,619 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:49:17,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.44ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 70.1MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 01:49:17,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.13ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:49:17,621 INFO L158 Benchmark]: Boogie Preprocessor took 46.45ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 65.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:49:17,622 INFO L158 Benchmark]: RCFGBuilder took 1295.62ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 85.5MB in the end (delta: -19.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-24 01:49:17,622 INFO L158 Benchmark]: TraceAbstraction took 4059.84ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 64.9MB in the end (delta: 19.8MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2024-11-24 01:49:17,622 INFO L158 Benchmark]: Witness Printer took 123.57ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 60.7MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:49:17,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.44ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 70.1MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.13ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.45ms. Allocated memory is still 117.4MB. Free memory was 67.9MB in the beginning and 65.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1295.62ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 85.5MB in the end (delta: -19.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4059.84ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 64.9MB in the end (delta: 19.8MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 123.57ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 60.7MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 687]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 52 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 349 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 20 mSDtfsCounter, 349 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 381 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 120/153 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-24 01:49:17,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18fd4ab-74e8-4c6e-b3f8-ccc5f0347591/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE