./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.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_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/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_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/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_d9bf2459-5d31-4044-b4fc-832d80fe901a/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:43:46,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:43:47,101 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:43:47,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:43:47,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:43:47,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:43:47,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:43:47,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:43:47,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:43:47,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:43:47,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:43:47,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:43:47,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:43:47,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:43:47,156 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:43:47,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:43:47,157 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:43:47,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:43:47,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:43:47,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:43:47,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:43:47,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:43:47,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:43:47,160 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_d9bf2459-5d31-4044-b4fc-832d80fe901a/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 -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-13 15:43:47,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:43:47,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:43:47,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:43:47,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:43:47,524 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:43:47,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-memsafety/list1.i Unable to find full path for "g++" [2024-11-13 15:43:49,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:43:50,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:43:50,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-13 15:43:50,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/bfe7bfc5a/c6251e7b90b54340aaa0464fe8cb971c/FLAG1b076e4f4 [2024-11-13 15:43:50,140 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/bfe7bfc5a/c6251e7b90b54340aaa0464fe8cb971c [2024-11-13 15:43:50,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:43:50,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:43:50,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:43:50,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:43:50,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:43:50,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669f7a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50, skipping insertion in model container [2024-11-13 15:43:50,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:43:50,695 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:43:50,701 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:43:50,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:43:50,724 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:43:50,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:43:50,845 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:43:50,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50 WrapperNode [2024-11-13 15:43:50,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:43:50,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:43:50,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:43:50,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:43:50,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,896 INFO L138 Inliner]: procedures = 264, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-13 15:43:50,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:43:50,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:43:50,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:43:50,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:43:50,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,938 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [8, 3]. 73 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [0, 1]. The 3 writes are split as follows [2, 1]. [2024-11-13 15:43:50,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:43:50,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:43:50,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:43:50,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:43:50,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (1/1) ... [2024-11-13 15:43:50,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:43:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:43:51,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:43:51,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:43:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-13 15:43:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-13 15:43:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-13 15:43:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:43:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:43:51,031 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 15:43:51,222 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:43:51,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:43:51,554 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:43:51,555 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:43:51,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:43:51,692 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:43:51,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:43:51 BoogieIcfgContainer [2024-11-13 15:43:51,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:43:51,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:43:51,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:43:51,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:43:51,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:43:50" (1/3) ... [2024-11-13 15:43:51,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6553e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:43:51, skipping insertion in model container [2024-11-13 15:43:51,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:43:50" (2/3) ... [2024-11-13 15:43:51,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6553e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:43:51, skipping insertion in model container [2024-11-13 15:43:51,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:43:51" (3/3) ... [2024-11-13 15:43:51,706 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-13 15:43:51,724 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:43:51,725 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG list1.i that has 3 procedures, 70 locations, 1 initial locations, 2 loop locations, and 30 error locations. [2024-11-13 15:43:51,726 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:43:51,860 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:43:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 162 flow [2024-11-13 15:43:51,988 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-11-13 15:43:51,991 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:43:51,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 5/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-13 15:43:51,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 162 flow [2024-11-13 15:43:51,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2024-11-13 15:43:52,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:43:52,023 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;@1a377f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:43:52,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-13 15:43:52,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:43:52,028 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-13 15:43:52,028 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:43:52,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:52,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:43:52,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:52,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:52,034 INFO L85 PathProgramCache]: Analyzing trace with hash 271266973, now seen corresponding path program 1 times [2024-11-13 15:43:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405755130] [2024-11-13 15:43:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:52,428 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 15:43:52,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:52,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405755130] [2024-11-13 15:43:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405755130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:52,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:43:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679503633] [2024-11-13 15:43:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:52,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:43:52,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:43:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:43:52,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-13 15:43:52,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 15:43:52,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:52,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-13 15:43:52,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:43:52,789 INFO L124 PetriNetUnfolderBase]: 25/148 cut-off events. [2024-11-13 15:43:52,790 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:43:52,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 148 events. 25/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 504 event pairs, 4 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 120. Up to 31 conditions per place. [2024-11-13 15:43:52,794 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 28 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-11-13 15:43:52,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 231 flow [2024-11-13 15:43:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:43:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:43:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-13 15:43:52,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-13 15:43:52,814 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 154 flow. Second operand 4 states and 212 transitions. [2024-11-13 15:43:52,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 231 flow [2024-11-13 15:43:52,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:43:52,831 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 159 flow [2024-11-13 15:43:52,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-11-13 15:43:52,838 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-13 15:43:52,838 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 159 flow [2024-11-13 15:43:52,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 15:43:52,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:52,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:43:52,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:43:52,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:52,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 271266974, now seen corresponding path program 1 times [2024-11-13 15:43:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045809273] [2024-11-13 15:43:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:53,166 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 15:43:53,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:53,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045809273] [2024-11-13 15:43:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045809273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:43:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321323115] [2024-11-13 15:43:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:53,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:43:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:43:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:43:53,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-13 15:43:53,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 15:43:53,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:53,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-13 15:43:53,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:43:53,489 INFO L124 PetriNetUnfolderBase]: 24/130 cut-off events. [2024-11-13 15:43:53,490 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:43:53,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 130 events. 24/130 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 405 event pairs, 8 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 63. Up to 48 conditions per place. [2024-11-13 15:43:53,491 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-13 15:43:53,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 215 flow [2024-11-13 15:43:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:43:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:43:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-13 15:43:53,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706081081081081 [2024-11-13 15:43:53,494 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 159 flow. Second operand 4 states and 209 transitions. [2024-11-13 15:43:53,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 215 flow [2024-11-13 15:43:53,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:43:53,497 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 156 flow [2024-11-13 15:43:53,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-13 15:43:53,498 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-11-13 15:43:53,498 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 156 flow [2024-11-13 15:43:53,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 15:43:53,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:53,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:43:53,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:43:53,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:53,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash -180658163, now seen corresponding path program 1 times [2024-11-13 15:43:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138083725] [2024-11-13 15:43:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:53,564 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 15:43:53,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138083725] [2024-11-13 15:43:53,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138083725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:53,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:53,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:43:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564062759] [2024-11-13 15:43:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:53,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:53,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-13 15:43:53,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 15:43:53,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:53,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-13 15:43:53,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:43:53,739 INFO L124 PetriNetUnfolderBase]: 26/124 cut-off events. [2024-11-13 15:43:53,739 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:43:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 124 events. 26/124 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 358 event pairs, 12 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 118. Up to 52 conditions per place. [2024-11-13 15:43:53,741 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 27 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-13 15:43:53,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2024-11-13 15:43:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:43:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-13 15:43:53,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-13 15:43:53,743 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 156 flow. Second operand 3 states and 155 transitions. [2024-11-13 15:43:53,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2024-11-13 15:43:53,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:43:53,746 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 146 flow [2024-11-13 15:43:53,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-13 15:43:53,747 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2024-11-13 15:43:53,747 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 146 flow [2024-11-13 15:43:53,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 15:43:53,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:53,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:43:53,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:43:53,748 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:53,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash -180658162, now seen corresponding path program 1 times [2024-11-13 15:43:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:53,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286822684] [2024-11-13 15:43:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:53,860 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 15:43:53,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:53,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286822684] [2024-11-13 15:43:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286822684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:43:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331814699] [2024-11-13 15:43:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:53,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:43:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:43:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:43:53,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-11-13 15:43:53,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 15:43:53,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:53,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-11-13 15:43:53,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:43:54,008 INFO L124 PetriNetUnfolderBase]: 24/114 cut-off events. [2024-11-13 15:43:54,008 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:43:54,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 114 events. 24/114 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 314 event pairs, 12 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 118. Up to 52 conditions per place. [2024-11-13 15:43:54,009 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 25 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-13 15:43:54,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 194 flow [2024-11-13 15:43:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:43:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:43:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-13 15:43:54,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-13 15:43:54,011 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 146 flow. Second operand 3 states and 159 transitions. [2024-11-13 15:43:54,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 194 flow [2024-11-13 15:43:54,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:43:54,014 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 138 flow [2024-11-13 15:43:54,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-11-13 15:43:54,015 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-13 15:43:54,015 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 138 flow [2024-11-13 15:43:54,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 15:43:54,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:54,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:43:54,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:43:54,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:54,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 703313784, now seen corresponding path program 1 times [2024-11-13 15:43:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969844209] [2024-11-13 15:43:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:54,590 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 15:43:54,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969844209] [2024-11-13 15:43:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969844209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:43:54,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:43:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:43:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206029146] [2024-11-13 15:43:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:43:54,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:43:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:43:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:43:54,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-13 15:43:54,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 138 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 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 15:43:54,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:54,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-13 15:43:54,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:43:55,337 INFO L124 PetriNetUnfolderBase]: 35/141 cut-off events. [2024-11-13 15:43:55,338 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-13 15:43:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 141 events. 35/141 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 415 event pairs, 19 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 132. Up to 73 conditions per place. [2024-11-13 15:43:55,339 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 32 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-11-13 15:43:55,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 260 flow [2024-11-13 15:43:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:43:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:43:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 483 transitions. [2024-11-13 15:43:55,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527027027027027 [2024-11-13 15:43:55,344 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 138 flow. Second operand 10 states and 483 transitions. [2024-11-13 15:43:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 260 flow [2024-11-13 15:43:55,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:43:55,349 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 209 flow [2024-11-13 15:43:55,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=209, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-13 15:43:55,353 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2024-11-13 15:43:55,353 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 209 flow [2024-11-13 15:43:55,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 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 15:43:55,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:43:55,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:43:55,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:43:55,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:43:55,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:43:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash 554129197, now seen corresponding path program 1 times [2024-11-13 15:43:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:43:55,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410141956] [2024-11-13 15:43:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:55,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:43:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:43:55,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:43:55,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410141956] [2024-11-13 15:43:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410141956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:43:55,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432065376] [2024-11-13 15:43:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:43:55,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:43:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:43:55,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:43:56,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:43:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:43:56,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:43:56,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:43:56,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:43:56,327 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-13 15:43:56,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 15:43:56,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:43:56,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:43:56,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:43:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:43:56,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:43:56,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-13 15:43:57,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:43:57,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 135 treesize of output 339 [2024-11-13 15:43:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:43:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432065376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:43:58,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:43:58,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-13 15:43:58,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671620753] [2024-11-13 15:43:58,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:43:58,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:43:58,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:43:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:43:59,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 74 [2024-11-13 15:43:59,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 209 flow. Second operand has 16 states, 16 states have (on average 40.75) internal successors, (652), 16 states have internal predecessors, (652), 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 15:43:59,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:43:59,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 74 [2024-11-13 15:43:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:00,262 INFO L124 PetriNetUnfolderBase]: 35/152 cut-off events. [2024-11-13 15:44:00,262 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-13 15:44:00,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 152 events. 35/152 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 5 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 160. Up to 31 conditions per place. [2024-11-13 15:44:00,267 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 37 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-11-13 15:44:00,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 322 flow [2024-11-13 15:44:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:44:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:44:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 360 transitions. [2024-11-13 15:44:00,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2024-11-13 15:44:00,271 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 209 flow. Second operand 8 states and 360 transitions. [2024-11-13 15:44:00,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 322 flow [2024-11-13 15:44:00,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:00,275 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 224 flow [2024-11-13 15:44:00,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-13 15:44:00,276 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-13 15:44:00,278 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 224 flow [2024-11-13 15:44:00,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.75) internal successors, (652), 16 states have internal predecessors, (652), 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 15:44:00,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:00,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:00,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:44:00,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:00,479 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:00,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash 554129198, now seen corresponding path program 1 times [2024-11-13 15:44:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937253131] [2024-11-13 15:44:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:44:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937253131] [2024-11-13 15:44:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937253131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:44:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581547197] [2024-11-13 15:44:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:01,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:01,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:01,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:44:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:01,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 15:44:01,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:01,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:44:01,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:44:01,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:44:01,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:44:01,524 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:44:01,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 15:44:01,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:01,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:01,643 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-13 15:44:01,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-13 15:44:01,692 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-13 15:44:01,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-13 15:44:01,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:44:01,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:01,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:01,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:44:01,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 15:44:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:01,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:44:02,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-13 15:44:02,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-13 15:44:02,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-13 15:44:02,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:44:02,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 134 [2024-11-13 15:44:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581547197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:44:02,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:44:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-13 15:44:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313454539] [2024-11-13 15:44:02,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:44:02,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:44:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:44:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:44:02,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:44:04,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-13 15:44:04,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 224 flow. Second operand has 20 states, 20 states have (on average 37.1) internal successors, (742), 20 states have internal predecessors, (742), 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 15:44:04,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:04,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-13 15:44:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:05,563 INFO L124 PetriNetUnfolderBase]: 35/150 cut-off events. [2024-11-13 15:44:05,564 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-13 15:44:05,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 150 events. 35/150 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 453 event pairs, 5 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 169. Up to 31 conditions per place. [2024-11-13 15:44:05,565 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 37 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-11-13 15:44:05,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 337 flow [2024-11-13 15:44:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:44:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:44:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2024-11-13 15:44:05,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2024-11-13 15:44:05,567 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 224 flow. Second operand 8 states and 328 transitions. [2024-11-13 15:44:05,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 337 flow [2024-11-13 15:44:05,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 303 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-13 15:44:05,570 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 208 flow [2024-11-13 15:44:05,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-11-13 15:44:05,571 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-13 15:44:05,572 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 208 flow [2024-11-13 15:44:05,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 37.1) internal successors, (742), 20 states have internal predecessors, (742), 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 15:44:05,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:05,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:05,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:44:05,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:05,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:05,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash 109322340, now seen corresponding path program 1 times [2024-11-13 15:44:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403569408] [2024-11-13 15:44:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:05,965 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 15:44:05,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:44:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403569408] [2024-11-13 15:44:05,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403569408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:05,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:44:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007634691] [2024-11-13 15:44:05,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:05,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:44:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:44:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:44:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:44:06,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-13 15:44:06,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 15:44:06,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:06,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-13 15:44:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:06,125 INFO L124 PetriNetUnfolderBase]: 21/77 cut-off events. [2024-11-13 15:44:06,125 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-13 15:44:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 77 events. 21/77 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 14 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 69. Up to 51 conditions per place. [2024-11-13 15:44:06,126 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-13 15:44:06,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 196 flow [2024-11-13 15:44:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:44:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:44:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-13 15:44:06,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054054054054054 [2024-11-13 15:44:06,128 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 208 flow. Second operand 5 states and 224 transitions. [2024-11-13 15:44:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 196 flow [2024-11-13 15:44:06,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:44:06,130 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 123 flow [2024-11-13 15:44:06,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-11-13 15:44:06,131 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -28 predicate places. [2024-11-13 15:44:06,131 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 123 flow [2024-11-13 15:44:06,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 15:44:06,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:06,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:06,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:44:06,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:06,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2102845503, now seen corresponding path program 1 times [2024-11-13 15:44:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:06,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261545089] [2024-11-13 15:44:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:06,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:44:06,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:44:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:44:06,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:44:06,192 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:44:06,193 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2024-11-13 15:44:06,195 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2024-11-13 15:44:06,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 61 remaining) [2024-11-13 15:44:06,197 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 61 remaining) [2024-11-13 15:44:06,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2024-11-13 15:44:06,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2024-11-13 15:44:06,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2024-11-13 15:44:06,201 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2024-11-13 15:44:06,202 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2024-11-13 15:44:06,203 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 61 remaining) [2024-11-13 15:44:06,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:44:06,203 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:06,261 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:44:06,262 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:44:06,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:44:06 BasicIcfg [2024-11-13 15:44:06,270 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:44:06,270 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:44:06,270 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:44:06,271 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:44:06,271 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:43:51" (3/4) ... [2024-11-13 15:44:06,273 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:44:06,274 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:44:06,275 INFO L158 Benchmark]: Toolchain (without parser) took 16129.06ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 103.4MB in the beginning and 161.2MB in the end (delta: -57.8MB). Peak memory consumption was 157.8MB. Max. memory is 16.1GB. [2024-11-13 15:44:06,275 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:44:06,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 698.88ms. Allocated memory is still 142.6MB. Free memory was 103.4MB in the beginning and 76.3MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:44:06,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.91ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.4MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:44:06,276 INFO L158 Benchmark]: Boogie Preprocessor took 67.66ms. Allocated memory is still 142.6MB. Free memory was 74.4MB in the beginning and 72.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:44:06,277 INFO L158 Benchmark]: RCFGBuilder took 727.32ms. Allocated memory is still 142.6MB. Free memory was 72.1MB in the beginning and 44.4MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:44:06,277 INFO L158 Benchmark]: TraceAbstraction took 14572.79ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 44.1MB in the beginning and 161.2MB in the end (delta: -117.2MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. [2024-11-13 15:44:06,277 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 360.7MB. Free memory was 161.2MB in the beginning and 161.2MB in the end (delta: 69.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:44:06,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 698.88ms. Allocated memory is still 142.6MB. Free memory was 103.4MB in the beginning and 76.3MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.91ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.4MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.66ms. Allocated memory is still 142.6MB. Free memory was 74.4MB in the beginning and 72.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 727.32ms. Allocated memory is still 142.6MB. Free memory was 72.1MB in the beginning and 44.4MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 14572.79ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 44.1MB in the beginning and 161.2MB in the end (delta: -117.2MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 360.7MB. Free memory was 161.2MB in the beginning and 161.2MB in the end (delta: 69.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; [L1048] 1 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [\old(plist)={2:0}, elem={-1:0}, plist={2:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, argc=9, id1=-1, id2=0, list={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] [L1076] 0 return 0; VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result=0, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1423 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1141 mSDsluCounter, 1401 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1354 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5144 IncrementalHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 47 mSDtfsCounter, 5144 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 10 QuantifiedInterpolants, 1815 SizeOfPredicates, 37 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:44:06,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/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_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:44:09,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:44:09,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 15:44:09,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:44:09,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:44:09,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:44:09,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:44:09,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:44:09,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:44:09,238 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:44:09,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:44:09,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:44:09,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:44:09,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:44:09,241 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:44:09,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:44:09,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:44:09,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:44:09,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:44:09,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:44:09,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:44:09,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:44:09,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:44:09,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:44:09,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:44:09,243 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:44:09,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:44:09,243 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:44:09,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:44:09,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:44:09,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:44:09,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:44:09,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:44:09,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:44:09,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:44:09,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:44:09,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:44:09,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:44:09,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:44:09,247 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_d9bf2459-5d31-4044-b4fc-832d80fe901a/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 -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-13 15:44:09,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:44:09,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:44:09,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:44:09,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:44:09,634 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:44:09,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-memsafety/list1.i Unable to find full path for "g++" [2024-11-13 15:44:11,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:44:11,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:44:11,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-13 15:44:12,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/7bdd506d0/7a32cb96f58e402885393e3be59667ee/FLAGd5f4d65fd [2024-11-13 15:44:12,232 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/data/7bdd506d0/7a32cb96f58e402885393e3be59667ee [2024-11-13 15:44:12,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:44:12,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:44:12,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:44:12,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:44:12,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:44:12,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d80fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12, skipping insertion in model container [2024-11-13 15:44:12,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,280 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:44:12,721 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:44:12,729 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:44:12,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:44:12,759 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:44:12,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:44:12,897 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:44:12,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12 WrapperNode [2024-11-13 15:44:12,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:44:12,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:44:12,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:44:12,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:44:12,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,954 INFO L138 Inliner]: procedures = 265, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-13 15:44:12,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:44:12,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:44:12,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:44:12,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:44:12,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,982 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [3, 8]. 73 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 3 writes are split as follows [1, 2]. [2024-11-13 15:44:12,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:12,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:13,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:13,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:44:13,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:44:13,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:44:13,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:44:13,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (1/1) ... [2024-11-13 15:44:13,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:44:13,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:13,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:44:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:44:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:44:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:44:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-13 15:44:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-13 15:44:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-13 15:44:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-13 15:44:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:44:13,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:44:13,067 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 15:44:13,317 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:44:13,319 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:44:13,782 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:44:13,783 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:44:13,966 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:44:13,968 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:44:13,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:44:13 BoogieIcfgContainer [2024-11-13 15:44:13,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:44:13,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:44:13,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:44:13,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:44:13,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:44:12" (1/3) ... [2024-11-13 15:44:13,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4e25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:44:13, skipping insertion in model container [2024-11-13 15:44:13,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:44:12" (2/3) ... [2024-11-13 15:44:13,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4e25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:44:13, skipping insertion in model container [2024-11-13 15:44:13,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:44:13" (3/3) ... [2024-11-13 15:44:13,986 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-13 15:44:14,006 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:44:14,008 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG list1.i that has 3 procedures, 70 locations, 1 initial locations, 2 loop locations, and 30 error locations. [2024-11-13 15:44:14,008 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:44:14,145 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:44:14,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 162 flow [2024-11-13 15:44:14,222 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-11-13 15:44:14,224 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:44:14,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 5/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-13 15:44:14,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 162 flow [2024-11-13 15:44:14,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2024-11-13 15:44:14,240 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:44:14,252 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;@3db882, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:44:14,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-13 15:44:14,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:44:14,257 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-13 15:44:14,257 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:44:14,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:14,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:44:14,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:14,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 271266973, now seen corresponding path program 1 times [2024-11-13 15:44:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:14,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108827551] [2024-11-13 15:44:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:14,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:14,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:44:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:14,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:44:14,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:14,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:44:14,594 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 15:44:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 15:44:14,620 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 15:44:14,620 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:14,621 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108827551] [2024-11-13 15:44:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108827551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:14,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:44:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047662608] [2024-11-13 15:44:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:14,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:44:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:44:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:44:14,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-13 15:44:14,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 15:44:14,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:14,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-13 15:44:14,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:15,052 INFO L124 PetriNetUnfolderBase]: 25/148 cut-off events. [2024-11-13 15:44:15,052 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 15:44:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 148 events. 25/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 504 event pairs, 4 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 120. Up to 31 conditions per place. [2024-11-13 15:44:15,055 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 28 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-11-13 15:44:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 231 flow [2024-11-13 15:44:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:44:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:44:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-13 15:44:15,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-13 15:44:15,074 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 154 flow. Second operand 4 states and 212 transitions. [2024-11-13 15:44:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 231 flow [2024-11-13 15:44:15,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:44:15,091 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 159 flow [2024-11-13 15:44:15,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-11-13 15:44:15,100 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-13 15:44:15,101 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 159 flow [2024-11-13 15:44:15,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 15:44:15,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:15,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:44:15,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 15:44:15,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:15,302 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:15,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash 271266974, now seen corresponding path program 1 times [2024-11-13 15:44:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476626362] [2024-11-13 15:44:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:15,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:15,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:44:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:15,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:44:15,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:15,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:44:15,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:44:15,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:44:15,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:44:15,524 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:44:15,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:44:15,547 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 15:44:15,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:15,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476626362] [2024-11-13 15:44:15,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476626362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:44:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43237200] [2024-11-13 15:44:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:15,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:44:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:44:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:44:15,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-13 15:44:15,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 15:44:15,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:15,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-13 15:44:15,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:15,986 INFO L124 PetriNetUnfolderBase]: 27/156 cut-off events. [2024-11-13 15:44:15,986 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-13 15:44:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 156 events. 27/156 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 549 event pairs, 4 based on Foata normal form. 4/118 useless extension candidates. Maximal degree in co-relation 63. Up to 42 conditions per place. [2024-11-13 15:44:15,988 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 29 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-11-13 15:44:15,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 247 flow [2024-11-13 15:44:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:44:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:44:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-13 15:44:15,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7331081081081081 [2024-11-13 15:44:15,991 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 159 flow. Second operand 4 states and 217 transitions. [2024-11-13 15:44:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 247 flow [2024-11-13 15:44:15,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:15,995 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 175 flow [2024-11-13 15:44:15,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-13 15:44:15,996 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2024-11-13 15:44:15,996 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 175 flow [2024-11-13 15:44:15,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 15:44:15,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:15,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:44:16,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:44:16,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:16,199 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:16,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -180658163, now seen corresponding path program 1 times [2024-11-13 15:44:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652486322] [2024-11-13 15:44:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:16,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:16,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:16,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:16,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:44:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:16,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:44:16,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:16,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:44:16,335 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 15:44:16,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:16,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652486322] [2024-11-13 15:44:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652486322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:16,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:16,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:44:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179970749] [2024-11-13 15:44:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:16,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:44:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:44:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:44:16,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-13 15:44:16,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 15:44:16,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:16,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-13 15:44:16,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:16,610 INFO L124 PetriNetUnfolderBase]: 28/134 cut-off events. [2024-11-13 15:44:16,610 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-13 15:44:16,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 134 events. 28/134 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 411 event pairs, 12 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 122. Up to 54 conditions per place. [2024-11-13 15:44:16,615 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 27 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-13 15:44:16,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 229 flow [2024-11-13 15:44:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:44:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:44:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-13 15:44:16,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-13 15:44:16,621 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 175 flow. Second operand 3 states and 155 transitions. [2024-11-13 15:44:16,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 229 flow [2024-11-13 15:44:16,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:16,626 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 164 flow [2024-11-13 15:44:16,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-13 15:44:16,628 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-13 15:44:16,629 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 164 flow [2024-11-13 15:44:16,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 15:44:16,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:16,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:44:16,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:44:16,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:16,831 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:16,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -180658162, now seen corresponding path program 1 times [2024-11-13 15:44:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400701025] [2024-11-13 15:44:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:16,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:16,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:16,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:44:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:16,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:44:16,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:16,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:44:16,995 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 15:44:16,995 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:16,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:16,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400701025] [2024-11-13 15:44:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400701025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:16,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:44:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769008631] [2024-11-13 15:44:16,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:16,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:44:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:44:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:44:17,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-11-13 15:44:17,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 15:44:17,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:17,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-11-13 15:44:17,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:17,275 INFO L124 PetriNetUnfolderBase]: 26/122 cut-off events. [2024-11-13 15:44:17,275 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 15:44:17,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 122 events. 26/122 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 346 event pairs, 12 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 118. Up to 54 conditions per place. [2024-11-13 15:44:17,276 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 25 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-13 15:44:17,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 214 flow [2024-11-13 15:44:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:44:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:44:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-13 15:44:17,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-13 15:44:17,279 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-13 15:44:17,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 214 flow [2024-11-13 15:44:17,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:17,281 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 156 flow [2024-11-13 15:44:17,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-13 15:44:17,282 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-11-13 15:44:17,282 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 156 flow [2024-11-13 15:44:17,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 15:44:17,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:17,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:17,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:44:17,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:17,483 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:17,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 703313784, now seen corresponding path program 1 times [2024-11-13 15:44:17,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144754016] [2024-11-13 15:44:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:17,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:17,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:17,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:44:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:17,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:44:17,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:17,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:17,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:17,839 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 15:44:17,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:17,840 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144754016] [2024-11-13 15:44:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144754016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:17,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:44:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131305290] [2024-11-13 15:44:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:17,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:44:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:44:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:44:18,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-13 15:44:18,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 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 15:44:18,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:18,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-13 15:44:18,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:18,957 INFO L124 PetriNetUnfolderBase]: 36/148 cut-off events. [2024-11-13 15:44:18,957 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-13 15:44:18,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 148 events. 36/148 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 459 event pairs, 20 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 132. Up to 76 conditions per place. [2024-11-13 15:44:18,959 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 33 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-11-13 15:44:18,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 286 flow [2024-11-13 15:44:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:44:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:44:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 483 transitions. [2024-11-13 15:44:18,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527027027027027 [2024-11-13 15:44:18,962 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 156 flow. Second operand 10 states and 483 transitions. [2024-11-13 15:44:18,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 286 flow [2024-11-13 15:44:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:18,966 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 231 flow [2024-11-13 15:44:18,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-13 15:44:18,967 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-13 15:44:18,967 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 231 flow [2024-11-13 15:44:18,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.888888888888886) internal successors, (404), 9 states have internal predecessors, (404), 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 15:44:18,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:18,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:18,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:44:19,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:19,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:19,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash 703314904, now seen corresponding path program 1 times [2024-11-13 15:44:19,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:19,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156680469] [2024-11-13 15:44:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:19,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:19,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:19,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:44:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:19,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:44:19,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:44:19,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:44:19,437 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:44:19,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:44:19,468 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 15:44:19,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:44:19,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156680469] [2024-11-13 15:44:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156680469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:44:19,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:44:19,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:44:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810488765] [2024-11-13 15:44:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:44:19,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:44:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:44:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:44:19,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2024-11-13 15:44:19,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 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 15:44:19,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:19,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2024-11-13 15:44:19,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:19,863 INFO L124 PetriNetUnfolderBase]: 33/141 cut-off events. [2024-11-13 15:44:19,863 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-13 15:44:19,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 141 events. 33/141 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 420 event pairs, 8 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 150. Up to 53 conditions per place. [2024-11-13 15:44:19,867 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 30 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-11-13 15:44:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 309 flow [2024-11-13 15:44:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:44:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:44:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-11-13 15:44:19,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-13 15:44:19,871 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 231 flow. Second operand 5 states and 240 transitions. [2024-11-13 15:44:19,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 309 flow [2024-11-13 15:44:19,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:44:19,878 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 240 flow [2024-11-13 15:44:19,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-11-13 15:44:19,882 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-13 15:44:19,883 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 240 flow [2024-11-13 15:44:19,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 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 15:44:19,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:19,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:19,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:44:20,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:20,084 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:20,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash 554129197, now seen corresponding path program 1 times [2024-11-13 15:44:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:20,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841283382] [2024-11-13 15:44:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:20,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:20,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:20,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:44:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:20,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:44:20,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:20,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:20,416 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-13 15:44:20,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-13 15:44:20,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:44:20,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:20,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:44:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:20,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:44:20,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-13 15:44:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:20,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:44:20,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841283382] [2024-11-13 15:44:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841283382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:44:20,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:44:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2024-11-13 15:44:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899846420] [2024-11-13 15:44:20,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:44:20,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:44:20,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:44:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:44:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:44:24,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:44:26,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 74 [2024-11-13 15:44:26,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 240 flow. Second operand has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 13 states have internal predecessors, (414), 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 15:44:26,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:44:26,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 74 [2024-11-13 15:44:26,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:44:26,956 INFO L124 PetriNetUnfolderBase]: 44/168 cut-off events. [2024-11-13 15:44:26,957 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-13 15:44:26,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 168 events. 44/168 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 553 event pairs, 10 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 207. Up to 49 conditions per place. [2024-11-13 15:44:26,962 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 47 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-11-13 15:44:26,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 381 flow [2024-11-13 15:44:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:44:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:44:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 298 transitions. [2024-11-13 15:44:26,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-11-13 15:44:26,964 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 240 flow. Second operand 8 states and 298 transitions. [2024-11-13 15:44:26,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 381 flow [2024-11-13 15:44:26,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 365 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:44:26,971 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 244 flow [2024-11-13 15:44:26,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-13 15:44:26,972 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-13 15:44:26,975 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 244 flow [2024-11-13 15:44:26,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 13 states have internal predecessors, (414), 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 15:44:26,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:44:26,976 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:27,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:44:27,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:27,180 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:44:27,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 554129198, now seen corresponding path program 1 times [2024-11-13 15:44:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:44:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177774710] [2024-11-13 15:44:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:27,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:27,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:27,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:44:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:27,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:44:27,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:27,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:27,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:27,592 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-13 15:44:27,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-13 15:44:27,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:44:27,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:44:27,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:44:27,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:44:27,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 15:44:27,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 15:44:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:27,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:44:28,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-13 15:44:28,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-11-13 15:44:28,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2024-11-13 15:44:30,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:44:30,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 303 treesize of output 401 [2024-11-13 15:44:31,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:44:31,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 254 treesize of output 518 [2024-11-13 15:45:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:45:04,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:45:04,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177774710] [2024-11-13 15:45:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177774710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:45:04,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:45:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-13 15:45:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702769730] [2024-11-13 15:45:04,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:45:04,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:45:04,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:45:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:45:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:45:10,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-11-13 15:45:10,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 244 flow. Second operand has 16 states, 16 states have (on average 28.6875) internal successors, (459), 16 states have internal predecessors, (459), 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 15:45:10,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:45:10,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-11-13 15:45:10,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:45:12,314 INFO L124 PetriNetUnfolderBase]: 42/164 cut-off events. [2024-11-13 15:45:12,314 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-13 15:45:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 164 events. 42/164 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 527 event pairs, 10 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 209. Up to 48 conditions per place. [2024-11-13 15:45:12,316 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 43 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-11-13 15:45:12,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 375 flow [2024-11-13 15:45:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:45:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:45:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-11-13 15:45:12,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-11-13 15:45:12,319 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 244 flow. Second operand 8 states and 270 transitions. [2024-11-13 15:45:12,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 375 flow [2024-11-13 15:45:12,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 340 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-13 15:45:12,323 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 229 flow [2024-11-13 15:45:12,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-13 15:45:12,325 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-13 15:45:12,325 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 229 flow [2024-11-13 15:45:12,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 28.6875) internal successors, (459), 16 states have internal predecessors, (459), 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 15:45:12,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:45:12,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:45:12,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:45:12,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:45:12,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:45:12,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:45:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 109322341, now seen corresponding path program 1 times [2024-11-13 15:45:12,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:45:12,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199006682] [2024-11-13 15:45:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:45:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:45:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:45:12,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:45:12,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:45:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:45:12,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:45:12,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:45:12,752 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 15:45:12,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:45:12,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:45:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199006682] [2024-11-13 15:45:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199006682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:45:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:45:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:45:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566171895] [2024-11-13 15:45:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:45:12,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:45:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:45:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:45:12,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:45:12,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 74 [2024-11-13 15:45:12,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 15:45:12,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:45:12,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 74 [2024-11-13 15:45:12,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:45:13,032 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2024-11-13 15:45:13,033 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-13 15:45:13,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 80 events. 22/80 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 15 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 80. Up to 54 conditions per place. [2024-11-13 15:45:13,034 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 26 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-13 15:45:13,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 219 flow [2024-11-13 15:45:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:45:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:45:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-13 15:45:13,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054054054054054 [2024-11-13 15:45:13,036 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 229 flow. Second operand 5 states and 224 transitions. [2024-11-13 15:45:13,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 219 flow [2024-11-13 15:45:13,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 195 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:45:13,040 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 141 flow [2024-11-13 15:45:13,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-11-13 15:45:13,041 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -26 predicate places. [2024-11-13 15:45:13,041 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 141 flow [2024-11-13 15:45:13,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 15:45:13,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:45:13,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:45:13,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:45:13,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:45:13,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-13 15:45:13,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:45:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2102845503, now seen corresponding path program 1 times [2024-11-13 15:45:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:45:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905438374] [2024-11-13 15:45:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:45:13,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:45:13,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:45:13,246 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:45:13,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:45:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:45:13,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:45:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:45:13,468 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 15:45:13,468 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:45:13,469 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2024-11-13 15:45:13,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2024-11-13 15:45:13,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2024-11-13 15:45:13,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 61 remaining) [2024-11-13 15:45:13,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2024-11-13 15:45:13,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2024-11-13 15:45:13,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2024-11-13 15:45:13,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2024-11-13 15:45:13,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2024-11-13 15:45:13,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 61 remaining) [2024-11-13 15:45:13,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:45:13,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:45:13,679 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:45:13,743 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:45:13,743 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:45:13,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:45:13 BasicIcfg [2024-11-13 15:45:13,751 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:45:13,751 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:45:13,751 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:45:13,752 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:45:13,753 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:44:13" (3/4) ... [2024-11-13 15:45:13,756 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:45:13,757 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:45:13,758 INFO L158 Benchmark]: Toolchain (without parser) took 61521.68ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 58.6MB in the beginning and 46.8MB in the end (delta: 11.8MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2024-11-13 15:45:13,759 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:45:13,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.07ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 30.9MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:45:13,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.82ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 29.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:45:13,760 INFO L158 Benchmark]: Boogie Preprocessor took 47.91ms. Allocated memory is still 83.9MB. Free memory was 29.0MB in the beginning and 26.6MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:45:13,761 INFO L158 Benchmark]: RCFGBuilder took 965.26ms. Allocated memory is still 83.9MB. Free memory was 26.6MB in the beginning and 28.7MB in the end (delta: -2.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-11-13 15:45:13,761 INFO L158 Benchmark]: TraceAbstraction took 59777.24ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 27.6MB in the beginning and 48.1MB in the end (delta: -20.5MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2024-11-13 15:45:13,762 INFO L158 Benchmark]: Witness Printer took 5.80ms. Allocated memory is still 125.8MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 11.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:45:13,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.07ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 30.9MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.82ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 29.0MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.91ms. Allocated memory is still 83.9MB. Free memory was 29.0MB in the beginning and 26.6MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 965.26ms. Allocated memory is still 83.9MB. Free memory was 26.6MB in the beginning and 28.7MB in the end (delta: -2.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 59777.24ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 27.6MB in the beginning and 48.1MB in the end (delta: -20.5MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 5.80ms. Allocated memory is still 125.8MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 11.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=0, \old(argv)={0:0}, argc=0, id1=-1, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; [L1048] 1 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [\old(plist)={0:0}, list={4:0}, plist={0:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [\old(plist)={4:0}, elem={1:0}, plist={4:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=0, \old(argv)={0:0}, argc=0, id1=-1, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, argc=0, id1=-1, id2=0, list={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, \result={0:0}, argc=0, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] [L1076] 0 return 0; VAL [\old(argc)=0, \old(argv)={0:0}, \old(plist)={0:0}, \result=0, \result={0:0}, argc=0, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.5s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1360 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1022 mSDsluCounter, 1119 SdHoareTripleChecker+Invalid, 13.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1086 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3866 IncrementalHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 33 mSDtfsCounter, 3866 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=7, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 4 QuantifiedInterpolants, 1454 SizeOfPredicates, 69 NumberOfNonLiveVariables, 746 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 4/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:45:13,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9bf2459-5d31-4044-b4fc-832d80fe901a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample