./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/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_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1 --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-d790fec [2024-12-02 07:03:15,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:03:15,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 07:03:15,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:03:15,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:03:15,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:03:15,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:03:15,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:03:15,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:03:15,296 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:03:15,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:03:15,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:03:15,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:03:15,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:03:15,297 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:03:15,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:03:15,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:03:15,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:03:15,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:03:15,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:03:15,298 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:03:15,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:03:15,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:03:15,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:03:15,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:03:15,300 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_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 07:03:15,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:03:15,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:03:15,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:03:15,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:03:15,552 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:03:15,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-12-02 07:03:18,175 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/data/574c14b37/abe3732a919747a6a74712effb6c498d/FLAG3b0f057f6 [2024-12-02 07:03:18,413 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:03:18,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2024-12-02 07:03:18,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/data/574c14b37/abe3732a919747a6a74712effb6c498d/FLAG3b0f057f6 [2024-12-02 07:03:18,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/data/574c14b37/abe3732a919747a6a74712effb6c498d [2024-12-02 07:03:18,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:03:18,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:03:18,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:03:18,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:03:18,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:03:18,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:03:18" (1/1) ... [2024-12-02 07:03:18,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294aa02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:18, skipping insertion in model container [2024-12-02 07:03:18,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:03:18" (1/1) ... [2024-12-02 07:03:18,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:03:19,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:03:19,045 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:03:19,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:03:19,123 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:03:19,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19 WrapperNode [2024-12-02 07:03:19,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:03:19,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:03:19,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:03:19,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:03:19,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,157 INFO L138 Inliner]: procedures = 162, calls = 77, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2024-12-02 07:03:19,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:03:19,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:03:19,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:03:19,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:03:19,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,175 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]. [2024-12-02 07:03:19,175 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,182 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:03:19,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:03:19,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:03:19,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:03:19,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (1/1) ... [2024-12-02 07:03:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:03:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:19,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:03:19,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 07:03:19,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 07:03:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:03:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:03:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 07:03:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:03:19,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:03:19,238 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 07:03:19,332 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:03:19,334 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:03:19,571 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 07:03:19,571 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:03:19,900 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:03:19,901 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:03:19,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:03:19 BoogieIcfgContainer [2024-12-02 07:03:19,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:03:19,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:03:19,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:03:19,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:03:19,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:03:18" (1/3) ... [2024-12-02 07:03:19,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f6e717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:03:19, skipping insertion in model container [2024-12-02 07:03:19,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:03:19" (2/3) ... [2024-12-02 07:03:19,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f6e717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:03:19, skipping insertion in model container [2024-12-02 07:03:19,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:03:19" (3/3) ... [2024-12-02 07:03:19,910 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2024-12-02 07:03:19,925 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:03:19,927 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. [2024-12-02 07:03:19,927 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 07:03:19,967 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:03:19,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 82 flow [2024-12-02 07:03:20,028 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2024-12-02 07:03:20,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:03:20,033 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. [2024-12-02 07:03:20,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 82 flow [2024-12-02 07:03:20,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 38 transitions, 79 flow [2024-12-02 07:03:20,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:03:20,054 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;@60c712e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:03:20,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-12-02 07:03:20,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:03:20,062 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-12-02 07:03:20,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:03:20,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:20,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:20,063 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)] === [2024-12-02 07:03:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 487645681, now seen corresponding path program 1 times [2024-12-02 07:03:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652843368] [2024-12-02 07:03:20,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652843368] [2024-12-02 07:03:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652843368] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:03:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447998414] [2024-12-02 07:03:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:20,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:20,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:20,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:20,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:20,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-12-02 07:03:20,360 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) [2024-12-02 07:03:20,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:20,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-12-02 07:03:20,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:20,482 INFO L124 PetriNetUnfolderBase]: 56/188 cut-off events. [2024-12-02 07:03:20,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:03:20,483 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. [2024-12-02 07:03:20,485 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-12-02 07:03:20,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 123 flow [2024-12-02 07:03:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:03:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-12-02 07:03:20,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2024-12-02 07:03:20,501 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 79 flow. Second operand 3 states and 79 transitions. [2024-12-02 07:03:20,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 123 flow [2024-12-02 07:03:20,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:03:20,508 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 90 flow [2024-12-02 07:03:20,511 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} [2024-12-02 07:03:20,514 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-12-02 07:03:20,515 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 90 flow [2024-12-02 07:03:20,515 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) [2024-12-02 07:03:20,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:20,515 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:20,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:03:20,515 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)] === [2024-12-02 07:03:20,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 296383730, now seen corresponding path program 1 times [2024-12-02 07:03:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:20,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825959004] [2024-12-02 07:03:20,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825959004] [2024-12-02 07:03:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825959004] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:03:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237634340] [2024-12-02 07:03:20,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:20,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:20,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:20,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:03:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:20,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:03:20,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:20,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:20,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237634340] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:20,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:03:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 07:03:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865065264] [2024-12-02 07:03:20,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:20,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:03:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:20,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:03:20,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:03:20,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-12-02 07:03:20,765 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) [2024-12-02 07:03:20,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:20,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-12-02 07:03:20,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:20,885 INFO L124 PetriNetUnfolderBase]: 56/191 cut-off events. [2024-12-02 07:03:20,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:03:20,886 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. [2024-12-02 07:03:20,887 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-12-02 07:03:20,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 150 flow [2024-12-02 07:03:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:03:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 07:03:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-12-02 07:03:20,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-12-02 07:03:20,889 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 90 flow. Second operand 6 states and 141 transitions. [2024-12-02 07:03:20,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 150 flow [2024-12-02 07:03:20,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 146 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 07:03:20,891 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-12-02 07:03:20,891 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} [2024-12-02 07:03:20,892 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-12-02 07:03:20,892 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-12-02 07:03:20,892 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) [2024-12-02 07:03:20,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:20,892 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:20,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:03:21,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:21,093 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)] === [2024-12-02 07:03:21,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1079908913, now seen corresponding path program 2 times [2024-12-02 07:03:21,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:21,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715366105] [2024-12-02 07:03:21,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:03:21,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:21,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:03:21,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:03:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 07:03:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715366105] [2024-12-02 07:03:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715366105] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:21,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:21,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:03:21,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189208725] [2024-12-02 07:03:21,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:21,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:21,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:21,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:21,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-12-02 07:03:21,236 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) [2024-12-02 07:03:21,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:21,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-12-02 07:03:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:21,309 INFO L124 PetriNetUnfolderBase]: 56/173 cut-off events. [2024-12-02 07:03:21,310 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 07:03:21,311 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. [2024-12-02 07:03:21,312 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 23 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-12-02 07:03:21,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 158 flow [2024-12-02 07:03:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:03:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-12-02 07:03:21,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-12-02 07:03:21,313 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 3 states and 65 transitions. [2024-12-02 07:03:21,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 158 flow [2024-12-02 07:03:21,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 144 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 07:03:21,315 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 98 flow [2024-12-02 07:03:21,315 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} [2024-12-02 07:03:21,316 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-12-02 07:03:21,316 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 98 flow [2024-12-02 07:03:21,316 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) [2024-12-02 07:03:21,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:21,316 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:21,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:03:21,316 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)] === [2024-12-02 07:03:21,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1079908914, now seen corresponding path program 1 times [2024-12-02 07:03:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350699306] [2024-12-02 07:03:21,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:21,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:21,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350699306] [2024-12-02 07:03:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350699306] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:03:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700504928] [2024-12-02 07:03:21,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:21,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:21,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:03:21,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:03:21,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:03:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:21,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:03:21,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:03:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:21,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:03:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:03:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700504928] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:03:21,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:03:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-12-02 07:03:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235402313] [2024-12-02 07:03:21,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:03:21,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:03:21,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:21,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:03:21,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:03:21,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-12-02 07:03:21,612 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) [2024-12-02 07:03:21,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:21,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-12-02 07:03:21,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:21,736 INFO L124 PetriNetUnfolderBase]: 56/179 cut-off events. [2024-12-02 07:03:21,736 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-12-02 07:03:21,737 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. [2024-12-02 07:03:21,737 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-12-02 07:03:21,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 194 flow [2024-12-02 07:03:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:03:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 07:03:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 264 transitions. [2024-12-02 07:03:21,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-12-02 07:03:21,740 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 98 flow. Second operand 12 states and 264 transitions. [2024-12-02 07:03:21,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 194 flow [2024-12-02 07:03:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:03:21,742 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 181 flow [2024-12-02 07:03:21,742 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} [2024-12-02 07:03:21,743 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-12-02 07:03:21,743 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 181 flow [2024-12-02 07:03:21,743 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) [2024-12-02 07:03:21,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:21,744 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:21,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:03:21,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:03:21,944 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)] === [2024-12-02 07:03:21,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2127203694, now seen corresponding path program 2 times [2024-12-02 07:03:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:21,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164000013] [2024-12-02 07:03:21,945 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:03:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:21,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:03:21,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:03:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 07:03:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164000013] [2024-12-02 07:03:22,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164000013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:22,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:22,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:03:22,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621748717] [2024-12-02 07:03:22,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:22,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:22,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:22,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:22,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-12-02 07:03:22,078 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) [2024-12-02 07:03:22,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:22,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-12-02 07:03:22,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:22,139 INFO L124 PetriNetUnfolderBase]: 56/161 cut-off events. [2024-12-02 07:03:22,139 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-12-02 07:03:22,140 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. [2024-12-02 07:03:22,141 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 28 selfloop transitions, 1 changer transitions 1/36 dead transitions. [2024-12-02 07:03:22,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 36 transitions, 229 flow [2024-12-02 07:03:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:03:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-12-02 07:03:22,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-12-02 07:03:22,142 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 181 flow. Second operand 3 states and 65 transitions. [2024-12-02 07:03:22,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 36 transitions, 229 flow [2024-12-02 07:03:22,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 36 transitions, 181 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-12-02 07:03:22,146 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 121 flow [2024-12-02 07:03:22,146 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} [2024-12-02 07:03:22,147 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-12-02 07:03:22,147 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 121 flow [2024-12-02 07:03:22,147 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) [2024-12-02 07:03:22,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:03:22,147 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:03:22,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:03:22,147 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)] === [2024-12-02 07:03:22,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:03:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1569119296, now seen corresponding path program 1 times [2024-12-02 07:03:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:03:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929314301] [2024-12-02 07:03:22,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:03:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:03:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:03:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 07:03:22,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:03:22,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929314301] [2024-12-02 07:03:22,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929314301] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:03:22,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:03:22,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:03:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132126226] [2024-12-02 07:03:22,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:03:22,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:03:22,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:03:22,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:03:22,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:03:22,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2024-12-02 07:03:22,220 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) [2024-12-02 07:03:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:03:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2024-12-02 07:03:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:03:22,268 INFO L124 PetriNetUnfolderBase]: 51/144 cut-off events. [2024-12-02 07:03:22,268 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-12-02 07:03:22,269 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. [2024-12-02 07:03:22,269 INFO L140 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-12-02 07:03:22,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 177 flow [2024-12-02 07:03:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:03:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:03:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-12-02 07:03:22,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2024-12-02 07:03:22,270 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 121 flow. Second operand 3 states and 74 transitions. [2024-12-02 07:03:22,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 177 flow [2024-12-02 07:03:22,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:03:22,273 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-12-02 07:03:22,273 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} [2024-12-02 07:03:22,273 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-12-02 07:03:22,273 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-12-02 07:03:22,274 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) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-12-02 07:03:22,276 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-12-02 07:03:22,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-12-02 07:03:22,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:03:22,278 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-12-02 07:03:22,282 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 07:03:22,282 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:03:22,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:03:22 BasicIcfg [2024-12-02 07:03:22,287 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:03:22,287 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:03:22,287 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:03:22,287 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:03:22,288 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:03:19" (3/4) ... [2024-12-02 07:03:22,289 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 07:03:22,291 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-12-02 07:03:22,295 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 80 nodes and edges [2024-12-02 07:03:22,295 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 07:03:22,295 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 07:03:22,295 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 07:03:22,345 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 07:03:22,346 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 07:03:22,346 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:03:22,346 INFO L158 Benchmark]: Toolchain (without parser) took 3586.82ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 64.1MB in the end (delta: 52.3MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-12-02 07:03:22,347 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:03:22,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.01ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 95.1MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:03:22,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.77ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:03:22,347 INFO L158 Benchmark]: Boogie Preprocessor took 30.29ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:03:22,348 INFO L158 Benchmark]: RCFGBuilder took 713.04ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 63.4MB in the end (delta: 27.5MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2024-12-02 07:03:22,348 INFO L158 Benchmark]: TraceAbstraction took 2383.55ms. Allocated memory is still 142.6MB. Free memory was 62.8MB in the beginning and 69.2MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:03:22,348 INFO L158 Benchmark]: Witness Printer took 58.63ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 64.1MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:03:22,350 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.01ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 95.1MB in the end (delta: 21.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.77ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.29ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 90.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 713.04ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 63.4MB in the end (delta: 27.5MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2383.55ms. Allocated memory is still 142.6MB. Free memory was 62.8MB in the beginning and 69.2MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.63ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 64.1MB in the end (delta: 5.0MB). 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: 2.3s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.3s 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, 0.1s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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! [2024-12-02 07:03:22,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fed55bc5-d530-46dc-8a33-fd47a7e4d6e3/bin/uautomizer-verify-84ZbGMXZE1/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