./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd --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 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:17:57,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:17:57,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:17:57,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:17:57,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:17:57,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:17:57,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:17:57,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:17:57,237 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:17:57,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:17:57,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:17:57,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:17:57,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:17:57,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:17:57,238 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:17:57,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:17:57,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:17:57,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:17:57,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:17:57,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:17:57,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:17:57,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:17:57,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:17:57,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:17:57,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:17:57,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:17:57,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:17:57,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:17:57,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:17:57,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:17:57,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:17:57,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:17:57,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:17:57,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:17:57,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:17:57,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:17:57,247 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_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G 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 -> 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 [2024-11-13 13:17:57,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:17:57,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:17:57,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:17:57,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:17:57,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:17:57,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-lit/sssc12_variant.i Unable to find full path for "g++" [2024-11-13 13:17:59,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:18:00,127 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:18:00,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2024-11-13 13:18:00,151 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/data/febf4c6ac/1d31f36a6cb24bb292b4b1fd53e2188b/FLAGab514e64c [2024-11-13 13:18:00,179 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/data/febf4c6ac/1d31f36a6cb24bb292b4b1fd53e2188b [2024-11-13 13:18:00,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:18:00,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:18:00,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:18:00,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:18:00,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:18:00,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:00,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df13f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00, skipping insertion in model container [2024-11-13 13:18:00,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:00,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:18:00,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:18:00,825 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:18:00,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:18:00,954 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:18:00,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00 WrapperNode [2024-11-13 13:18:00,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:18:00,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:18:00,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:18:00,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:18:00,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:00,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,022 INFO L138 Inliner]: procedures = 275, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2024-11-13 13:18:01,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:18:01,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:18:01,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:18:01,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:18:01,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,070 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 8, 3]. 62 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-11-13 13:18:01,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:18:01,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:18:01,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:18:01,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:18:01,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (1/1) ... [2024-11-13 13:18:01,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:18:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:01,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:18:01,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_636e4845-1e16-4f96-b30b-1db04250b0ef/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:18:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-11-13 13:18:01,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:18:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:18:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:18:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:18:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:18:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:18:01,185 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:18:01,333 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:18:01,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:18:01,590 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:18:01,590 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:18:01,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:18:01,808 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:18:01,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:18:01 BoogieIcfgContainer [2024-11-13 13:18:01,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:18:01,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:18:01,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:18:01,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:18:01,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:18:00" (1/3) ... [2024-11-13 13:18:01,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d6f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:18:01, skipping insertion in model container [2024-11-13 13:18:01,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:00" (2/3) ... [2024-11-13 13:18:01,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d6f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:18:01, skipping insertion in model container [2024-11-13 13:18:01,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:18:01" (3/3) ... [2024-11-13 13:18:01,827 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2024-11-13 13:18:01,842 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:18:01,843 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sssc12_variant.i that has 2 procedures, 29 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-13 13:18:01,844 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:18:01,914 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:18:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 68 flow [2024-11-13 13:18:02,012 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2024-11-13 13:18:02,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:02,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-11-13 13:18:02,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 32 transitions, 68 flow [2024-11-13 13:18:02,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 68 flow [2024-11-13 13:18:02,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:18:02,050 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;@6643b0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:18:02,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-13 13:18:02,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:18:02,059 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:18:02,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:02,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:02,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:18:02,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-13 13:18:02,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash 269288, now seen corresponding path program 1 times [2024-11-13 13:18:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767282259] [2024-11-13 13:18:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767282259] [2024-11-13 13:18:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767282259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:02,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:02,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:18:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718725556] [2024-11-13 13:18:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:02,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:18:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:18:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:18:02,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-11-13 13:18:02,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:02,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:02,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-11-13 13:18:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:02,390 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2024-11-13 13:18:02,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:02,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 84 events. 17/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 267 event pairs, 14 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 119. Up to 44 conditions per place. [2024-11-13 13:18:02,393 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 12 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-11-13 13:18:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 80 flow [2024-11-13 13:18:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:18:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:18:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2024-11-13 13:18:02,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-13 13:18:02,409 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 68 flow. Second operand 2 states and 45 transitions. [2024-11-13 13:18:02,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 80 flow [2024-11-13 13:18:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:18:02,416 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 56 flow [2024-11-13 13:18:02,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-11-13 13:18:02,423 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-13 13:18:02,423 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 56 flow [2024-11-13 13:18:02,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:02,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:02,423 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:18:02,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:18:02,424 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-13 13:18:02,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash -567264210, now seen corresponding path program 1 times [2024-11-13 13:18:02,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785024463] [2024-11-13 13:18:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:02,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:18:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:02,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:18:02,546 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:18:02,548 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-11-13 13:18:02,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2024-11-13 13:18:02,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2024-11-13 13:18:02,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2024-11-13 13:18:02,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-11-13 13:18:02,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:18:02,553 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:18:02,557 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:18:02,557 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:18:02,623 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:18:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 124 flow [2024-11-13 13:18:02,693 INFO L124 PetriNetUnfolderBase]: 6/66 cut-off events. [2024-11-13 13:18:02,693 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:18:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 66 events. 6/66 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-13 13:18:02,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 124 flow [2024-11-13 13:18:02,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 57 transitions, 124 flow [2024-11-13 13:18:02,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:18:02,704 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;@6643b0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:18:02,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-13 13:18:02,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:18:02,709 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:18:02,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:02,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:02,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:18:02,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 13:18:02,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash 325889, now seen corresponding path program 1 times [2024-11-13 13:18:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481377083] [2024-11-13 13:18:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:02,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481377083] [2024-11-13 13:18:02,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481377083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:02,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:18:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537335760] [2024-11-13 13:18:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:02,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:18:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:18:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:18:02,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-13 13:18:02,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:02,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:02,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-13 13:18:02,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:03,213 INFO L124 PetriNetUnfolderBase]: 409/1275 cut-off events. [2024-11-13 13:18:03,214 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-13 13:18:03,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1275 events. 409/1275 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8914 event pairs, 325 based on Foata normal form. 114/1104 useless extension candidates. Maximal degree in co-relation 1448. Up to 652 conditions per place. [2024-11-13 13:18:03,237 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 21 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-11-13 13:18:03,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 148 flow [2024-11-13 13:18:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:18:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:18:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2024-11-13 13:18:03,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-11-13 13:18:03,241 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 124 flow. Second operand 2 states and 82 transitions. [2024-11-13 13:18:03,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 148 flow [2024-11-13 13:18:03,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:18:03,246 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 106 flow [2024-11-13 13:18:03,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-13 13:18:03,249 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-11-13 13:18:03,249 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 106 flow [2024-11-13 13:18:03,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:03,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:03,250 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-13 13:18:03,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:18:03,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-13 13:18:03,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1795877734, now seen corresponding path program 1 times [2024-11-13 13:18:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897222664] [2024-11-13 13:18:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:03,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:18:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:03,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:18:03,318 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:18:03,318 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (21 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-11-13 13:18:03,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2024-11-13 13:18:03,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2024-11-13 13:18:03,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2024-11-13 13:18:03,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2024-11-13 13:18:03,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 23 remaining) [2024-11-13 13:18:03,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2024-11-13 13:18:03,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2024-11-13 13:18:03,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2024-11-13 13:18:03,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2024-11-13 13:18:03,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2024-11-13 13:18:03,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2024-11-13 13:18:03,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2024-11-13 13:18:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:18:03,322 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:18:03,323 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:18:03,323 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:18:03,402 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:18:03,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 82 transitions, 182 flow [2024-11-13 13:18:03,431 INFO L124 PetriNetUnfolderBase]: 9/96 cut-off events. [2024-11-13 13:18:03,431 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:18:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 9/96 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2024-11-13 13:18:03,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 82 transitions, 182 flow [2024-11-13 13:18:03,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 82 transitions, 182 flow [2024-11-13 13:18:03,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:18:03,438 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;@6643b0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:18:03,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-13 13:18:03,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:18:03,442 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:18:03,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:03,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:03,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:18:03,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:18:03,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 407315, now seen corresponding path program 1 times [2024-11-13 13:18:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:03,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558145067] [2024-11-13 13:18:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:03,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558145067] [2024-11-13 13:18:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558145067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:03,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:03,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:18:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576083008] [2024-11-13 13:18:03,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:03,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:18:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:18:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:18:03,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2024-11-13 13:18:03,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:03,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:03,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2024-11-13 13:18:03,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:05,916 INFO L124 PetriNetUnfolderBase]: 6301/15930 cut-off events. [2024-11-13 13:18:05,917 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2024-11-13 13:18:05,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24790 conditions, 15930 events. 6301/15930 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 165879 event pairs, 4948 based on Foata normal form. 1572/13856 useless extension candidates. Maximal degree in co-relation 7164. Up to 8542 conditions per place. [2024-11-13 13:18:06,064 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 30 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2024-11-13 13:18:06,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 218 flow [2024-11-13 13:18:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:18:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:18:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2024-11-13 13:18:06,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725609756097561 [2024-11-13 13:18:06,070 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 182 flow. Second operand 2 states and 119 transitions. [2024-11-13 13:18:06,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 218 flow [2024-11-13 13:18:06,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 216 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 13:18:06,074 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 156 flow [2024-11-13 13:18:06,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-11-13 13:18:06,076 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -5 predicate places. [2024-11-13 13:18:06,076 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 156 flow [2024-11-13 13:18:06,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:06,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:06,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:06,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:18:06,079 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:18:06,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2041904834, now seen corresponding path program 1 times [2024-11-13 13:18:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:06,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669397991] [2024-11-13 13:18:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:06,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:06,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669397991] [2024-11-13 13:18:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669397991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:06,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:06,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:18:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186823373] [2024-11-13 13:18:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:06,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:18:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:18:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:18:06,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-13 13:18:06,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:06,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:06,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-13 13:18:06,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:08,899 INFO L124 PetriNetUnfolderBase]: 11513/20722 cut-off events. [2024-11-13 13:18:08,900 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-11-13 13:18:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36718 conditions, 20722 events. 11513/20722 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 168427 event pairs, 9521 based on Foata normal form. 0/20537 useless extension candidates. Maximal degree in co-relation 36712. Up to 15622 conditions per place. [2024-11-13 13:18:09,035 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 35 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2024-11-13 13:18:09,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 210 flow [2024-11-13 13:18:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:18:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:18:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-13 13:18:09,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 13:18:09,038 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 156 flow. Second operand 3 states and 123 transitions. [2024-11-13 13:18:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 210 flow [2024-11-13 13:18:09,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:18:09,042 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 140 flow [2024-11-13 13:18:09,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-11-13 13:18:09,044 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -12 predicate places. [2024-11-13 13:18:09,044 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 140 flow [2024-11-13 13:18:09,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:09,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:09,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:09,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:18:09,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:18:09,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2041904835, now seen corresponding path program 1 times [2024-11-13 13:18:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634251311] [2024-11-13 13:18:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:09,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:09,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634251311] [2024-11-13 13:18:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634251311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:09,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:09,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:18:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267333330] [2024-11-13 13:18:09,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:09,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:18:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:09,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:18:09,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:18:09,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2024-11-13 13:18:09,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:09,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:09,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2024-11-13 13:18:09,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:12,716 INFO L124 PetriNetUnfolderBase]: 14235/29702 cut-off events. [2024-11-13 13:18:12,716 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-13 13:18:12,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49640 conditions, 29702 events. 14235/29702 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 298557 event pairs, 3787 based on Foata normal form. 546/26864 useless extension candidates. Maximal degree in co-relation 49633. Up to 12238 conditions per place. [2024-11-13 13:18:12,920 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 95 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-11-13 13:18:12,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 132 transitions, 532 flow [2024-11-13 13:18:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:18:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:18:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-13 13:18:12,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-13 13:18:12,923 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 140 flow. Second operand 6 states and 330 transitions. [2024-11-13 13:18:12,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 132 transitions, 532 flow [2024-11-13 13:18:12,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 132 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:18:12,933 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 214 flow [2024-11-13 13:18:12,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-11-13 13:18:12,934 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -4 predicate places. [2024-11-13 13:18:12,935 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 214 flow [2024-11-13 13:18:12,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:12,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:12,936 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-13 13:18:12,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:18:12,936 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:18:12,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash -555619603, now seen corresponding path program 1 times [2024-11-13 13:18:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:12,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018725408] [2024-11-13 13:18:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:12,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:18:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:18:12,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:18:12,988 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:18:12,988 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2024-11-13 13:18:12,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (21 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2024-11-13 13:18:12,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-11-13 13:18:12,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-11-13 13:18:12,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-11-13 13:18:12,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2024-11-13 13:18:12,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:18:12,994 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 13:18:12,995 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:18:12,995 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:18:13,065 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:18:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 107 transitions, 242 flow [2024-11-13 13:18:13,085 INFO L124 PetriNetUnfolderBase]: 12/126 cut-off events. [2024-11-13 13:18:13,085 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:18:13,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 126 events. 12/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 462 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 108. Up to 5 conditions per place. [2024-11-13 13:18:13,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 107 transitions, 242 flow [2024-11-13 13:18:13,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 107 transitions, 242 flow [2024-11-13 13:18:13,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:18:13,091 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;@6643b0c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:18:13,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-13 13:18:13,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:18:13,094 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:18:13,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:13,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:13,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:18:13,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-13 13:18:13,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash 513566, now seen corresponding path program 1 times [2024-11-13 13:18:13,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:13,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612534256] [2024-11-13 13:18:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612534256] [2024-11-13 13:18:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612534256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:13,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:18:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136663256] [2024-11-13 13:18:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:13,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:18:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:18:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:18:13,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-11-13 13:18:13,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 107 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:13,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:13,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-11-13 13:18:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:26,283 INFO L124 PetriNetUnfolderBase]: 79731/172664 cut-off events. [2024-11-13 13:18:26,283 INFO L125 PetriNetUnfolderBase]: For 7903/7903 co-relation queries the response was YES. [2024-11-13 13:18:26,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276351 conditions, 172664 events. 79731/172664 cut-off events. For 7903/7903 co-relation queries the response was YES. Maximal size of possible extension queue 5970. Compared 2223909 event pairs, 62793 based on Foata normal form. 18627/154596 useless extension candidates. Maximal degree in co-relation 26460. Up to 100038 conditions per place. [2024-11-13 13:18:27,503 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 39 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2024-11-13 13:18:27,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 290 flow [2024-11-13 13:18:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:18:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:18:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2024-11-13 13:18:27,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-11-13 13:18:27,505 INFO L175 Difference]: Start difference. First operand has 104 places, 107 transitions, 242 flow. Second operand 2 states and 156 transitions. [2024-11-13 13:18:27,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 290 flow [2024-11-13 13:18:27,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 284 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 13:18:27,516 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 206 flow [2024-11-13 13:18:27,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-11-13 13:18:27,521 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -6 predicate places. [2024-11-13 13:18:27,521 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 206 flow [2024-11-13 13:18:27,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:27,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:27,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:27,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:18:27,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-13 13:18:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1910307190, now seen corresponding path program 1 times [2024-11-13 13:18:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238909313] [2024-11-13 13:18:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238909313] [2024-11-13 13:18:27,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238909313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:27,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:27,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:18:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939316088] [2024-11-13 13:18:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:27,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:18:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:18:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:18:27,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 107 [2024-11-13 13:18:27,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:27,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:27,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 107 [2024-11-13 13:18:27,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand