./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.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_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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_075748aa-a672-43aa-8cb6-e73f53131d5f/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:53:14,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:53:14,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:53:14,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:53:14,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:53:14,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:53:14,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:53:14,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:53:14,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:53:14,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:53:14,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:53:14,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:53:14,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:53:14,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:53:14,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:53:14,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:53:14,541 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:53:14,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:14,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:53:14,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:53:14,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:53:14,543 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_075748aa-a672-43aa-8cb6-e73f53131d5f/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 -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2024-11-13 14:53:14,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:53:14,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:53:14,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:53:14,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:53:14,876 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:53:14,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i Unable to find full path for "g++" [2024-11-13 14:53:16,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:53:17,001 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:53:17,002 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-13 14:53:17,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/51646c701/e122c468229b4a5f928e5b2825e6e887/FLAG8c62ef0b1 [2024-11-13 14:53:17,045 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/51646c701/e122c468229b4a5f928e5b2825e6e887 [2024-11-13 14:53:17,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:53:17,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:53:17,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:17,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:53:17,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:53:17,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e02f2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17, skipping insertion in model container [2024-11-13 14:53:17,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:53:17,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:17,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:53:17,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:17,649 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:53:17,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17 WrapperNode [2024-11-13 14:53:17,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:17,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:17,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:53:17,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:53:17,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,698 INFO L138 Inliner]: procedures = 168, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 140 [2024-11-13 14:53:17,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:17,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:53:17,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:53:17,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:53:17,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,752 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-13 14:53:17,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:53:17,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:53:17,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:53:17,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:53:17,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (1/1) ... [2024-11-13 14:53:17,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:17,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:53:17,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:53:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:53:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:53:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:53:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:53:17,843 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 14:53:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 14:53:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 14:53:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 14:53:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:53:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:53:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:53:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:53:17,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:53:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:53:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:53:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:53:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:53:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:53:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:53:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:53:17,850 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 14:53:18,046 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:53:18,048 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:53:18,394 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:53:18,394 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:53:18,676 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:53:18,676 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:53:18,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:18 BoogieIcfgContainer [2024-11-13 14:53:18,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:53:18,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:53:18,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:53:18,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:53:18,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:53:17" (1/3) ... [2024-11-13 14:53:18,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780a81d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:18, skipping insertion in model container [2024-11-13 14:53:18,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:17" (2/3) ... [2024-11-13 14:53:18,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780a81d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:18, skipping insertion in model container [2024-11-13 14:53:18,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:18" (3/3) ... [2024-11-13 14:53:18,690 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-11-13 14:53:18,721 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:53:18,722 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_bad.i that has 3 procedures, 49 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-13 14:53:18,723 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:53:18,784 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:53:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 58 transitions, 130 flow [2024-11-13 14:53:18,872 INFO L124 PetriNetUnfolderBase]: 10/56 cut-off events. [2024-11-13 14:53:18,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:53:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 56 events. 10/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-13 14:53:18,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 58 transitions, 130 flow [2024-11-13 14:53:18,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 55 transitions, 122 flow [2024-11-13 14:53:18,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:18,914 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;@367aa4b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:18,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 14:53:18,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:53:18,935 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-13 14:53:18,935 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:53:18,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:18,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:18,936 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:18,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 66932389, now seen corresponding path program 1 times [2024-11-13 14:53:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:18,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801937553] [2024-11-13 14:53:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:18,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801937553] [2024-11-13 14:53:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801937553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:19,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001321689] [2024-11-13 14:53:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:19,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:19,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:19,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:53:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:19,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:19,768 INFO L124 PetriNetUnfolderBase]: 445/831 cut-off events. [2024-11-13 14:53:19,768 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-13 14:53:19,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 831 events. 445/831 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4279 event pairs, 330 based on Foata normal form. 90/846 useless extension candidates. Maximal degree in co-relation 1498. Up to 710 conditions per place. [2024-11-13 14:53:19,777 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 29 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-11-13 14:53:19,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 166 flow [2024-11-13 14:53:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-13 14:53:19,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-13 14:53:19,795 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 122 flow. Second operand 3 states and 93 transitions. [2024-11-13 14:53:19,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 166 flow [2024-11-13 14:53:19,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:53:19,806 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-13 14:53:19,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-13 14:53:19,813 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-13 14:53:19,814 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-13 14:53:19,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:53:19,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:19,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:19,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:53:19,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:19,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash 66932390, now seen corresponding path program 1 times [2024-11-13 14:53:19,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:19,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936807147] [2024-11-13 14:53:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:19,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936807147] [2024-11-13 14:53:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936807147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991295853] [2024-11-13 14:53:20,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:20,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:20,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:20,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:53:20,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:20,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:20,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:20,693 INFO L124 PetriNetUnfolderBase]: 788/1475 cut-off events. [2024-11-13 14:53:20,693 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:53:20,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 1475 events. 788/1475 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7756 event pairs, 263 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 2704. Up to 697 conditions per place. [2024-11-13 14:53:20,707 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-13 14:53:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 261 flow [2024-11-13 14:53:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-13 14:53:20,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-13 14:53:20,709 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 117 transitions. [2024-11-13 14:53:20,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 261 flow [2024-11-13 14:53:20,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:20,713 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 113 flow [2024-11-13 14:53:20,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-13 14:53:20,714 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 14:53:20,714 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 113 flow [2024-11-13 14:53:20,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:53:20,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:20,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:20,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:53:20,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:20,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1118442165, now seen corresponding path program 1 times [2024-11-13 14:53:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813653863] [2024-11-13 14:53:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:20,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:21,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813653863] [2024-11-13 14:53:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813653863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:21,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:21,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:53:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180508260] [2024-11-13 14:53:21,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:21,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:21,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:21,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:21,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:21,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:21,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:21,294 INFO L124 PetriNetUnfolderBase]: 831/1494 cut-off events. [2024-11-13 14:53:21,294 INFO L125 PetriNetUnfolderBase]: For 51/61 co-relation queries the response was YES. [2024-11-13 14:53:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1494 events. 831/1494 cut-off events. For 51/61 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7620 event pairs, 619 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 2920. Up to 1298 conditions per place. [2024-11-13 14:53:21,303 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 31 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2024-11-13 14:53:21,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 171 flow [2024-11-13 14:53:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-13 14:53:21,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-11-13 14:53:21,305 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 113 flow. Second operand 3 states and 89 transitions. [2024-11-13 14:53:21,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 171 flow [2024-11-13 14:53:21,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:21,306 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 107 flow [2024-11-13 14:53:21,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-13 14:53:21,307 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-13 14:53:21,307 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 107 flow [2024-11-13 14:53:21,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:21,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:21,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:21,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:53:21,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:21,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 64198109, now seen corresponding path program 1 times [2024-11-13 14:53:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:21,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745613428] [2024-11-13 14:53:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745613428] [2024-11-13 14:53:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745613428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233248172] [2024-11-13 14:53:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:21,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:21,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:21,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:53:21,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:21,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:21,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:21,705 INFO L124 PetriNetUnfolderBase]: 1091/1969 cut-off events. [2024-11-13 14:53:21,705 INFO L125 PetriNetUnfolderBase]: For 98/118 co-relation queries the response was YES. [2024-11-13 14:53:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 1969 events. 1091/1969 cut-off events. For 98/118 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11229 event pairs, 517 based on Foata normal form. 24/1879 useless extension candidates. Maximal degree in co-relation 3803. Up to 1179 conditions per place. [2024-11-13 14:53:21,718 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 51 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-13 14:53:21,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 264 flow [2024-11-13 14:53:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-13 14:53:21,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 14:53:21,722 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 107 flow. Second operand 3 states and 116 transitions. [2024-11-13 14:53:21,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 264 flow [2024-11-13 14:53:21,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:21,725 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 118 flow [2024-11-13 14:53:21,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-13 14:53:21,726 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 14:53:21,727 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 118 flow [2024-11-13 14:53:21,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:53:21,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:21,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:21,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:53:21,727 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:21,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1409850364, now seen corresponding path program 1 times [2024-11-13 14:53:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7691026] [2024-11-13 14:53:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:21,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:21,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7691026] [2024-11-13 14:53:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7691026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:21,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:21,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840591143] [2024-11-13 14:53:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:21,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:21,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:21,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:21,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 14:53:21,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:21,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:21,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:22,198 INFO L124 PetriNetUnfolderBase]: 1302/2462 cut-off events. [2024-11-13 14:53:22,199 INFO L125 PetriNetUnfolderBase]: For 238/254 co-relation queries the response was YES. [2024-11-13 14:53:22,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 2462 events. 1302/2462 cut-off events. For 238/254 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 14239 event pairs, 482 based on Foata normal form. 42/2437 useless extension candidates. Maximal degree in co-relation 4938. Up to 1291 conditions per place. [2024-11-13 14:53:22,217 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 48 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-13 14:53:22,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 274 flow [2024-11-13 14:53:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-13 14:53:22,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-11-13 14:53:22,221 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 118 flow. Second operand 3 states and 111 transitions. [2024-11-13 14:53:22,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 274 flow [2024-11-13 14:53:22,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:22,225 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 131 flow [2024-11-13 14:53:22,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-11-13 14:53:22,226 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-13 14:53:22,226 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 131 flow [2024-11-13 14:53:22,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 14:53:22,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:22,226 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 14:53:22,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:53:22,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:22,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash -189439765, now seen corresponding path program 1 times [2024-11-13 14:53:22,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683296541] [2024-11-13 14:53:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683296541] [2024-11-13 14:53:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683296541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:22,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:22,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130549622] [2024-11-13 14:53:22,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:22,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:22,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:22,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 14:53:22,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:22,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:22,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:22,811 INFO L124 PetriNetUnfolderBase]: 2134/4056 cut-off events. [2024-11-13 14:53:22,811 INFO L125 PetriNetUnfolderBase]: For 732/764 co-relation queries the response was YES. [2024-11-13 14:53:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8472 conditions, 4056 events. 2134/4056 cut-off events. For 732/764 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 26283 event pairs, 979 based on Foata normal form. 69/3997 useless extension candidates. Maximal degree in co-relation 8460. Up to 2082 conditions per place. [2024-11-13 14:53:22,836 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 55 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-11-13 14:53:22,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 320 flow [2024-11-13 14:53:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-13 14:53:22,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-11-13 14:53:22,838 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 131 flow. Second operand 3 states and 115 transitions. [2024-11-13 14:53:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 320 flow [2024-11-13 14:53:22,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:22,841 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 140 flow [2024-11-13 14:53:22,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-13 14:53:22,842 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-13 14:53:22,842 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 140 flow [2024-11-13 14:53:22,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 14:53:22,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:22,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:22,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:53:22,845 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:22,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash -47159430, now seen corresponding path program 1 times [2024-11-13 14:53:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923861138] [2024-11-13 14:53:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:22,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923861138] [2024-11-13 14:53:22,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923861138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:22,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:22,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932841202] [2024-11-13 14:53:22,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:22,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:22,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:22,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:22,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:53:22,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:22,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:22,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:23,401 INFO L124 PetriNetUnfolderBase]: 1676/3225 cut-off events. [2024-11-13 14:53:23,402 INFO L125 PetriNetUnfolderBase]: For 685/691 co-relation queries the response was YES. [2024-11-13 14:53:23,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 3225 events. 1676/3225 cut-off events. For 685/691 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 20188 event pairs, 739 based on Foata normal form. 86/3221 useless extension candidates. Maximal degree in co-relation 6970. Up to 1575 conditions per place. [2024-11-13 14:53:23,422 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-13 14:53:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 283 flow [2024-11-13 14:53:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-13 14:53:23,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2024-11-13 14:53:23,424 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 140 flow. Second operand 3 states and 107 transitions. [2024-11-13 14:53:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 283 flow [2024-11-13 14:53:23,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:23,429 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 139 flow [2024-11-13 14:53:23,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-13 14:53:23,430 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-13 14:53:23,430 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 139 flow [2024-11-13 14:53:23,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 14:53:23,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:23,431 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] [2024-11-13 14:53:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:53:23,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2084789049, now seen corresponding path program 1 times [2024-11-13 14:53:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944593243] [2024-11-13 14:53:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:23,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:23,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944593243] [2024-11-13 14:53:23,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944593243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:23,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:23,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:23,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981754288] [2024-11-13 14:53:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:23,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:23,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:23,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:53:23,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:23,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:23,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:23,887 INFO L124 PetriNetUnfolderBase]: 1070/2324 cut-off events. [2024-11-13 14:53:23,887 INFO L125 PetriNetUnfolderBase]: For 786/786 co-relation queries the response was YES. [2024-11-13 14:53:23,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 2324 events. 1070/2324 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14082 event pairs, 335 based on Foata normal form. 126/2408 useless extension candidates. Maximal degree in co-relation 5085. Up to 1144 conditions per place. [2024-11-13 14:53:23,901 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 40 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-13 14:53:23,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 269 flow [2024-11-13 14:53:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-13 14:53:23,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-13 14:53:23,905 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 139 flow. Second operand 3 states and 104 transitions. [2024-11-13 14:53:23,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 269 flow [2024-11-13 14:53:23,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:23,910 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2024-11-13 14:53:23,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-13 14:53:23,910 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-13 14:53:23,910 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2024-11-13 14:53:23,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:53:23,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:23,911 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] [2024-11-13 14:53:23,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:53:23,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:23,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2045316812, now seen corresponding path program 1 times [2024-11-13 14:53:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831685297] [2024-11-13 14:53:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831685297] [2024-11-13 14:53:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831685297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:24,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209485886] [2024-11-13 14:53:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:24,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:53:24,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:53:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:24,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:24,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:24,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:24,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:24,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:24,896 INFO L124 PetriNetUnfolderBase]: 1622/3383 cut-off events. [2024-11-13 14:53:24,896 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-11-13 14:53:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3383 events. 1622/3383 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 19607 event pairs, 664 based on Foata normal form. 0/3263 useless extension candidates. Maximal degree in co-relation 7855. Up to 979 conditions per place. [2024-11-13 14:53:24,919 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 104 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-13 14:53:24,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 121 transitions, 608 flow [2024-11-13 14:53:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:53:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:53:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-13 14:53:24,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6827586206896552 [2024-11-13 14:53:24,921 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 5 states and 198 transitions. [2024-11-13 14:53:24,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 121 transitions, 608 flow [2024-11-13 14:53:24,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 121 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:24,928 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 161 flow [2024-11-13 14:53:24,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-11-13 14:53:24,928 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-13 14:53:24,929 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 161 flow [2024-11-13 14:53:24,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:24,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:24,929 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] [2024-11-13 14:53:24,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:53:24,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:24,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash -928306390, now seen corresponding path program 1 times [2024-11-13 14:53:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697875001] [2024-11-13 14:53:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:25,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697875001] [2024-11-13 14:53:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697875001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:25,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503784503] [2024-11-13 14:53:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:25,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:25,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:25,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 14:53:25,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:25,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:25,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:25,435 INFO L124 PetriNetUnfolderBase]: 1237/2618 cut-off events. [2024-11-13 14:53:25,435 INFO L125 PetriNetUnfolderBase]: For 1018/1024 co-relation queries the response was YES. [2024-11-13 14:53:25,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5988 conditions, 2618 events. 1237/2618 cut-off events. For 1018/1024 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14380 event pairs, 516 based on Foata normal form. 28/2572 useless extension candidates. Maximal degree in co-relation 5972. Up to 1667 conditions per place. [2024-11-13 14:53:25,450 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 49 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-13 14:53:25,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 320 flow [2024-11-13 14:53:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-13 14:53:25,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6264367816091954 [2024-11-13 14:53:25,452 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 161 flow. Second operand 3 states and 109 transitions. [2024-11-13 14:53:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 320 flow [2024-11-13 14:53:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 312 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:25,457 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 161 flow [2024-11-13 14:53:25,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-11-13 14:53:25,458 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-13 14:53:25,458 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 161 flow [2024-11-13 14:53:25,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 14:53:25,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:25,459 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, 1, 1] [2024-11-13 14:53:25,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:53:25,459 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:25,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2075256483, now seen corresponding path program 1 times [2024-11-13 14:53:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667795357] [2024-11-13 14:53:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:25,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667795357] [2024-11-13 14:53:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667795357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:25,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552364318] [2024-11-13 14:53:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:25,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:25,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:25,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:25,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:25,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:25,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:53:25,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552364318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:25,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:25,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-13 14:53:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169107222] [2024-11-13 14:53:25,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:25,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:25,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:25,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 14:53:25,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:25,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:26,079 INFO L124 PetriNetUnfolderBase]: 1237/2597 cut-off events. [2024-11-13 14:53:26,079 INFO L125 PetriNetUnfolderBase]: For 967/973 co-relation queries the response was YES. [2024-11-13 14:53:26,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6029 conditions, 2597 events. 1237/2597 cut-off events. For 967/973 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14410 event pairs, 975 based on Foata normal form. 7/2522 useless extension candidates. Maximal degree in co-relation 6011. Up to 2069 conditions per place. [2024-11-13 14:53:26,090 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 32 selfloop transitions, 1 changer transitions 2/48 dead transitions. [2024-11-13 14:53:26,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 227 flow [2024-11-13 14:53:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-13 14:53:26,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-11-13 14:53:26,091 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 161 flow. Second operand 3 states and 90 transitions. [2024-11-13 14:53:26,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 227 flow [2024-11-13 14:53:26,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:26,094 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 152 flow [2024-11-13 14:53:26,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-13 14:53:26,096 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-11-13 14:53:26,097 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 152 flow [2024-11-13 14:53:26,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 14:53:26,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:26,097 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, 1, 1] [2024-11-13 14:53:26,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:26,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:26,298 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:26,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1737338504, now seen corresponding path program 1 times [2024-11-13 14:53:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133086806] [2024-11-13 14:53:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:53:26,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755000299] [2024-11-13 14:53:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:26,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:26,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:26,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:53:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:26,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:53:26,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:26,836 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133086806] [2024-11-13 14:53:26,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:53:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755000299] [2024-11-13 14:53:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755000299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:26,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671379810] [2024-11-13 14:53:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:26,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:26,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:26,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:53:26,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:26,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:26,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:27,173 INFO L124 PetriNetUnfolderBase]: 1008/2164 cut-off events. [2024-11-13 14:53:27,173 INFO L125 PetriNetUnfolderBase]: For 775/777 co-relation queries the response was YES. [2024-11-13 14:53:27,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4979 conditions, 2164 events. 1008/2164 cut-off events. For 775/777 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 11056 event pairs, 348 based on Foata normal form. 18/2132 useless extension candidates. Maximal degree in co-relation 4961. Up to 900 conditions per place. [2024-11-13 14:53:27,184 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 57 selfloop transitions, 3 changer transitions 3/76 dead transitions. [2024-11-13 14:53:27,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 381 flow [2024-11-13 14:53:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-13 14:53:27,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6077586206896551 [2024-11-13 14:53:27,186 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 152 flow. Second operand 4 states and 141 transitions. [2024-11-13 14:53:27,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 381 flow [2024-11-13 14:53:27,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:27,189 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 161 flow [2024-11-13 14:53:27,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-11-13 14:53:27,190 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-13 14:53:27,190 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 161 flow [2024-11-13 14:53:27,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:53:27,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:27,190 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, 1, 1, 1] [2024-11-13 14:53:27,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:27,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:27,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:27,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1681363419, now seen corresponding path program 1 times [2024-11-13 14:53:27,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097590279] [2024-11-13 14:53:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097590279] [2024-11-13 14:53:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097590279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:53:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044796024] [2024-11-13 14:53:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:28,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:28,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:28,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 161 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:28,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:28,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:28,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:29,941 INFO L124 PetriNetUnfolderBase]: 1174/2483 cut-off events. [2024-11-13 14:53:29,941 INFO L125 PetriNetUnfolderBase]: For 1128/1132 co-relation queries the response was YES. [2024-11-13 14:53:29,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 2483 events. 1174/2483 cut-off events. For 1128/1132 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13391 event pairs, 376 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 5852. Up to 1326 conditions per place. [2024-11-13 14:53:29,954 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 94 selfloop transitions, 17 changer transitions 9/133 dead transitions. [2024-11-13 14:53:29,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 705 flow [2024-11-13 14:53:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:53:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:53:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 362 transitions. [2024-11-13 14:53:29,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2024-11-13 14:53:29,957 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 161 flow. Second operand 12 states and 362 transitions. [2024-11-13 14:53:29,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 705 flow [2024-11-13 14:53:29,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 133 transitions, 693 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:29,962 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 295 flow [2024-11-13 14:53:29,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2024-11-13 14:53:29,963 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-13 14:53:29,963 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 295 flow [2024-11-13 14:53:29,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:29,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:29,964 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, 1, 1, 1] [2024-11-13 14:53:29,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:53:29,965 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:29,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1313377997, now seen corresponding path program 2 times [2024-11-13 14:53:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60381655] [2024-11-13 14:53:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:29,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60381655] [2024-11-13 14:53:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60381655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:30,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:53:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480479144] [2024-11-13 14:53:30,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:30,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:31,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:31,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 295 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:31,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:31,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:32,199 INFO L124 PetriNetUnfolderBase]: 1403/2949 cut-off events. [2024-11-13 14:53:32,199 INFO L125 PetriNetUnfolderBase]: For 3141/3145 co-relation queries the response was YES. [2024-11-13 14:53:32,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8037 conditions, 2949 events. 1403/2949 cut-off events. For 3141/3145 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16530 event pairs, 426 based on Foata normal form. 0/2894 useless extension candidates. Maximal degree in co-relation 8009. Up to 1651 conditions per place. [2024-11-13 14:53:32,218 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 103 selfloop transitions, 25 changer transitions 9/150 dead transitions. [2024-11-13 14:53:32,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 982 flow [2024-11-13 14:53:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:53:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:53:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 365 transitions. [2024-11-13 14:53:32,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5244252873563219 [2024-11-13 14:53:32,225 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 295 flow. Second operand 12 states and 365 transitions. [2024-11-13 14:53:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 982 flow [2024-11-13 14:53:32,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 960 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:32,237 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 543 flow [2024-11-13 14:53:32,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=543, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-11-13 14:53:32,238 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-11-13 14:53:32,238 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 543 flow [2024-11-13 14:53:32,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:32,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:32,239 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, 1, 1, 1] [2024-11-13 14:53:32,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:53:32,239 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:32,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1648539633, now seen corresponding path program 3 times [2024-11-13 14:53:32,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:32,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576083008] [2024-11-13 14:53:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576083008] [2024-11-13 14:53:33,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576083008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:53:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472212161] [2024-11-13 14:53:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:33,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:33,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:33,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 543 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:33,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:33,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:33,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:34,260 INFO L124 PetriNetUnfolderBase]: 1567/3300 cut-off events. [2024-11-13 14:53:34,260 INFO L125 PetriNetUnfolderBase]: For 5552/5558 co-relation queries the response was YES. [2024-11-13 14:53:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 3300 events. 1567/3300 cut-off events. For 5552/5558 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19249 event pairs, 386 based on Foata normal form. 0/3249 useless extension candidates. Maximal degree in co-relation 9715. Up to 1679 conditions per place. [2024-11-13 14:53:34,282 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 111 selfloop transitions, 42 changer transitions 6/172 dead transitions. [2024-11-13 14:53:34,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 1278 flow [2024-11-13 14:53:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:53:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:53:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 400 transitions. [2024-11-13 14:53:34,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5305039787798409 [2024-11-13 14:53:34,285 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 543 flow. Second operand 13 states and 400 transitions. [2024-11-13 14:53:34,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 1278 flow [2024-11-13 14:53:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 172 transitions, 1212 flow, removed 33 selfloop flow, removed 0 redundant places. [2024-11-13 14:53:34,307 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 766 flow [2024-11-13 14:53:34,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=766, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-11-13 14:53:34,308 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 58 predicate places. [2024-11-13 14:53:34,308 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 766 flow [2024-11-13 14:53:34,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:34,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:34,309 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, 1, 1, 1] [2024-11-13 14:53:34,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:53:34,309 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:34,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:34,309 INFO L85 PathProgramCache]: Analyzing trace with hash 261366901, now seen corresponding path program 4 times [2024-11-13 14:53:34,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:34,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257281638] [2024-11-13 14:53:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:35,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257281638] [2024-11-13 14:53:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257281638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:35,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:53:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688094714] [2024-11-13 14:53:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:35,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:53:35,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:53:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:53:35,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:35,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 766 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:35,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:35,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:36,432 INFO L124 PetriNetUnfolderBase]: 1807/3792 cut-off events. [2024-11-13 14:53:36,433 INFO L125 PetriNetUnfolderBase]: For 7980/7992 co-relation queries the response was YES. [2024-11-13 14:53:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 3792 events. 1807/3792 cut-off events. For 7980/7992 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22853 event pairs, 313 based on Foata normal form. 4/3750 useless extension candidates. Maximal degree in co-relation 11699. Up to 1290 conditions per place. [2024-11-13 14:53:36,452 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 118 selfloop transitions, 65 changer transitions 13/209 dead transitions. [2024-11-13 14:53:36,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 209 transitions, 1646 flow [2024-11-13 14:53:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:53:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 14:53:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 490 transitions. [2024-11-13 14:53:36,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280172413793104 [2024-11-13 14:53:36,455 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 766 flow. Second operand 16 states and 490 transitions. [2024-11-13 14:53:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 209 transitions, 1646 flow [2024-11-13 14:53:36,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 209 transitions, 1534 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:36,489 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 995 flow [2024-11-13 14:53:36,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=995, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-11-13 14:53:36,490 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2024-11-13 14:53:36,491 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 995 flow [2024-11-13 14:53:36,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 14:53:36,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:36,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:36,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:53:36,492 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:36,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash -624827233, now seen corresponding path program 1 times [2024-11-13 14:53:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242998614] [2024-11-13 14:53:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242998614] [2024-11-13 14:53:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242998614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725400302] [2024-11-13 14:53:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:36,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:36,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:36,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 995 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 14:53:36,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:36,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:36,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:37,035 INFO L124 PetriNetUnfolderBase]: 1761/3575 cut-off events. [2024-11-13 14:53:37,035 INFO L125 PetriNetUnfolderBase]: For 7961/7973 co-relation queries the response was YES. [2024-11-13 14:53:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 3575 events. 1761/3575 cut-off events. For 7961/7973 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20562 event pairs, 442 based on Foata normal form. 35/3560 useless extension candidates. Maximal degree in co-relation 11519. Up to 2259 conditions per place. [2024-11-13 14:53:37,061 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 99 selfloop transitions, 7 changer transitions 11/129 dead transitions. [2024-11-13 14:53:37,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 1359 flow [2024-11-13 14:53:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-13 14:53:37,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2024-11-13 14:53:37,063 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 995 flow. Second operand 3 states and 103 transitions. [2024-11-13 14:53:37,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 1359 flow [2024-11-13 14:53:37,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 129 transitions, 1136 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-11-13 14:53:37,093 INFO L231 Difference]: Finished difference. Result has 118 places, 100 transitions, 767 flow [2024-11-13 14:53:37,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=767, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2024-11-13 14:53:37,093 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-11-13 14:53:37,094 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 100 transitions, 767 flow [2024-11-13 14:53:37,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 14:53:37,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:37,094 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:37,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:53:37,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:37,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1480981401, now seen corresponding path program 1 times [2024-11-13 14:53:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854332191] [2024-11-13 14:53:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:53:37,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833908876] [2024-11-13 14:53:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:37,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:37,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:37,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:53:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:37,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:53:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:37,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:53:37,443 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:53:37,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-13 14:53:37,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-13 14:53:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-13 14:53:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-13 14:53:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-13 14:53:37,446 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-13 14:53:37,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-13 14:53:37,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:53:37,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:53:37,652 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:37,726 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:53:37,727 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:53:37,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:53:37 BasicIcfg [2024-11-13 14:53:37,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:53:37,735 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:53:37,735 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:53:37,735 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:53:37,736 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:18" (3/4) ... [2024-11-13 14:53:37,737 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:53:37,738 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:53:37,739 INFO L158 Benchmark]: Toolchain (without parser) took 20689.44ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 118.0MB in the beginning and 189.2MB in the end (delta: -71.2MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,740 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 80.1MB in the end (delta: 210.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:53:37,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.73ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 97.4MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,741 INFO L158 Benchmark]: Boogie Preprocessor took 69.60ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 92.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:53:37,742 INFO L158 Benchmark]: RCFGBuilder took 907.63ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 47.7MB in the end (delta: 45.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,743 INFO L158 Benchmark]: TraceAbstraction took 19053.58ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 47.2MB in the beginning and 190.0MB in the end (delta: -142.8MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,743 INFO L158 Benchmark]: Witness Printer took 3.45ms. Allocated memory is still 352.3MB. Free memory was 189.3MB in the beginning and 189.2MB in the end (delta: 44.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:37,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00ms. Allocated memory is still 142.6MB. Free memory was 80.3MB in the beginning and 80.1MB in the end (delta: 210.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.73ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 97.4MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.60ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 92.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 907.63ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 47.7MB in the end (delta: 45.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19053.58ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 47.2MB in the beginning and 190.0MB in the end (delta: -142.8MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 3.45ms. Allocated memory is still 352.3MB. Free memory was 189.3MB in the beginning and 189.2MB in the end (delta: 44.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 681. Possible FailurePath: [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, id2=0, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] CALL 2 reach_error() [L681] COND FALSE 2 !(0) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L681] 2 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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: 762]: 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: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 15 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: 18.8s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1164 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1036 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4026 IncrementalHoareTripleChecker+Invalid, 4039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 10 mSDtfsCounter, 4026 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=16, InterpolantAutomatonStates: 95, 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, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 461 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 354 ConstructedInterpolants, 0 QuantifiedInterpolants, 3178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 15/16 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 14:53:37,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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 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_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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_075748aa-a672-43aa-8cb6-e73f53131d5f/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 a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:53:40,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:53:40,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:53:40,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:53:40,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:53:40,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:53:40,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:53:40,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:53:40,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:53:40,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:53:40,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:53:40,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:53:40,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:53:40,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:53:40,635 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:53:40,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:53:40,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:53:40,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:53:40,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:53:40,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:53:40,636 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:53:40,637 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:53:40,640 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:53:40,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:53:40,644 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:53:40,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:53:40,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:40,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:53:40,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:53:40,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:53:40,647 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_075748aa-a672-43aa-8cb6-e73f53131d5f/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 -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2024-11-13 14:53:40,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:53:40,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:53:40,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:53:40,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:53:40,961 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:53:40,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i Unable to find full path for "g++" [2024-11-13 14:53:42,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:53:43,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:53:43,250 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2024-11-13 14:53:43,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/3b794a2a2/ef15ab184bf4463b9ff1e799f169716e/FLAG532e9e713 [2024-11-13 14:53:43,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/data/3b794a2a2/ef15ab184bf4463b9ff1e799f169716e [2024-11-13 14:53:43,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:53:43,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:53:43,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:43,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:53:43,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:53:43,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:43,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d57378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43, skipping insertion in model container [2024-11-13 14:53:43,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:43,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:53:43,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:43,817 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:53:43,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:43,944 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:53:43,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43 WrapperNode [2024-11-13 14:53:43,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:43,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:43,945 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:53:43,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:53:43,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:43,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:43,994 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 139 [2024-11-13 14:53:43,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:43,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:53:43,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:53:43,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:53:44,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,023 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-13 14:53:44,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,035 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:53:44,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:53:44,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:53:44,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:53:44,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (1/1) ... [2024-11-13 14:53:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:44,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:44,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:53:44,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 14:53:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 14:53:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 14:53:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-13 14:53:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:53:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:53:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:53:44,117 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 14:53:44,305 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:53:44,307 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:53:44,794 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:53:44,795 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:53:45,192 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:53:45,193 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:53:45,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:45 BoogieIcfgContainer [2024-11-13 14:53:45,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:53:45,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:53:45,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:53:45,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:53:45,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:53:43" (1/3) ... [2024-11-13 14:53:45,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103b4649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:45, skipping insertion in model container [2024-11-13 14:53:45,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:43" (2/3) ... [2024-11-13 14:53:45,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103b4649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:45, skipping insertion in model container [2024-11-13 14:53:45,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:45" (3/3) ... [2024-11-13 14:53:45,208 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-11-13 14:53:45,222 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:53:45,223 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG circular_buffer_bad.i that has 3 procedures, 49 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2024-11-13 14:53:45,223 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:53:45,304 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:53:45,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 58 transitions, 130 flow [2024-11-13 14:53:45,390 INFO L124 PetriNetUnfolderBase]: 10/56 cut-off events. [2024-11-13 14:53:45,393 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:53:45,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 56 events. 10/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-13 14:53:45,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 58 transitions, 130 flow [2024-11-13 14:53:45,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 55 transitions, 122 flow [2024-11-13 14:53:45,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:45,431 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;@675a3578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:45,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 14:53:45,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:53:45,441 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-13 14:53:45,441 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:53:45,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:45,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:45,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:45,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -957895259, now seen corresponding path program 1 times [2024-11-13 14:53:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712725819] [2024-11-13 14:53:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:45,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:45,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:45,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:45,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:45,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:53:45,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:45,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:45,754 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:45,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712725819] [2024-11-13 14:53:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712725819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:45,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:45,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109762589] [2024-11-13 14:53:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:45,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:45,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:45,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:53:45,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:45,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:45,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:46,185 INFO L124 PetriNetUnfolderBase]: 445/831 cut-off events. [2024-11-13 14:53:46,187 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-13 14:53:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 831 events. 445/831 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4260 event pairs, 330 based on Foata normal form. 90/846 useless extension candidates. Maximal degree in co-relation 1498. Up to 710 conditions per place. [2024-11-13 14:53:46,203 INFO L140 encePairwiseOnDemand]: 51/58 looper letters, 29 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-11-13 14:53:46,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 166 flow [2024-11-13 14:53:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-13 14:53:46,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-13 14:53:46,221 INFO L175 Difference]: Start difference. First operand has 52 places, 55 transitions, 122 flow. Second operand 3 states and 93 transitions. [2024-11-13 14:53:46,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 166 flow [2024-11-13 14:53:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:53:46,236 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-13 14:53:46,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-13 14:53:46,245 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-13 14:53:46,246 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-13 14:53:46,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 14:53:46,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:46,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:46,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:46,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:46,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:46,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash -957895258, now seen corresponding path program 1 times [2024-11-13 14:53:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:46,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992151440] [2024-11-13 14:53:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:46,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:46,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:46,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:46,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:53:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:46,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:53:46,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:46,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:46,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992151440] [2024-11-13 14:53:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992151440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:46,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:46,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:46,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288453458] [2024-11-13 14:53:46,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:46,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:46,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:46,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:46,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:46,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:46,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:53:46,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:46,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:46,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:47,353 INFO L124 PetriNetUnfolderBase]: 788/1475 cut-off events. [2024-11-13 14:53:47,354 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:53:47,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 1475 events. 788/1475 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7775 event pairs, 263 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 2704. Up to 697 conditions per place. [2024-11-13 14:53:47,372 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-13 14:53:47,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 261 flow [2024-11-13 14:53:47,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-11-13 14:53:47,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-13 14:53:47,379 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 3 states and 117 transitions. [2024-11-13 14:53:47,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 261 flow [2024-11-13 14:53:47,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:47,383 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 113 flow [2024-11-13 14:53:47,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-13 14:53:47,385 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-13 14:53:47,386 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 113 flow [2024-11-13 14:53:47,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:53:47,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:47,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:47,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:53:47,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:47,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:47,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash -894481421, now seen corresponding path program 1 times [2024-11-13 14:53:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812939086] [2024-11-13 14:53:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:47,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:47,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:47,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:47,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:53:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:47,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:53:47,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:47,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:47,843 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812939086] [2024-11-13 14:53:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812939086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537056464] [2024-11-13 14:53:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:47,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:47,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:47,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 14:53:47,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:47,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:47,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:48,455 INFO L124 PetriNetUnfolderBase]: 986/1971 cut-off events. [2024-11-13 14:53:48,456 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-13 14:53:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 1971 events. 986/1971 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10779 event pairs, 195 based on Foata normal form. 75/1974 useless extension candidates. Maximal degree in co-relation 3680. Up to 626 conditions per place. [2024-11-13 14:53:48,470 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 74 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-13 14:53:48,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 94 transitions, 369 flow [2024-11-13 14:53:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-13 14:53:48,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7068965517241379 [2024-11-13 14:53:48,474 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 113 flow. Second operand 4 states and 164 transitions. [2024-11-13 14:53:48,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 94 transitions, 369 flow [2024-11-13 14:53:48,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 94 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:48,477 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 133 flow [2024-11-13 14:53:48,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-11-13 14:53:48,479 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-13 14:53:48,479 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 133 flow [2024-11-13 14:53:48,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 14:53:48,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:48,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:48,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:53:48,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:48,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:48,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:48,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2145334683, now seen corresponding path program 1 times [2024-11-13 14:53:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:48,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532940879] [2024-11-13 14:53:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:48,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:48,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:53:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:48,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:48,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:48,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:48,859 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:48,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532940879] [2024-11-13 14:53:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532940879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:53:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151614137] [2024-11-13 14:53:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:48,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:48,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:48,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:53:48,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:48,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:48,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:49,209 INFO L124 PetriNetUnfolderBase]: 992/1946 cut-off events. [2024-11-13 14:53:49,210 INFO L125 PetriNetUnfolderBase]: For 414/434 co-relation queries the response was YES. [2024-11-13 14:53:49,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 1946 events. 992/1946 cut-off events. For 414/434 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10949 event pairs, 759 based on Foata normal form. 3/1858 useless extension candidates. Maximal degree in co-relation 3872. Up to 1561 conditions per place. [2024-11-13 14:53:49,220 INFO L140 encePairwiseOnDemand]: 56/58 looper letters, 30 selfloop transitions, 1 changer transitions 2/48 dead transitions. [2024-11-13 14:53:49,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 195 flow [2024-11-13 14:53:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-13 14:53:49,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2024-11-13 14:53:49,222 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 133 flow. Second operand 3 states and 91 transitions. [2024-11-13 14:53:49,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 195 flow [2024-11-13 14:53:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:49,225 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 124 flow [2024-11-13 14:53:49,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-13 14:53:49,226 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-13 14:53:49,226 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 124 flow [2024-11-13 14:53:49,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:53:49,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:49,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:49,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:49,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:49,431 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:49,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash -274432646, now seen corresponding path program 1 times [2024-11-13 14:53:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:49,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924580521] [2024-11-13 14:53:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:49,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:49,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:49,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:53:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:49,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:49,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:49,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:49,585 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:49,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924580521] [2024-11-13 14:53:49,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924580521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:49,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:49,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:49,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23527869] [2024-11-13 14:53:49,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:49,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:49,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:49,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:49,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:49,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 14:53:49,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:49,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:49,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:50,099 INFO L124 PetriNetUnfolderBase]: 1101/2156 cut-off events. [2024-11-13 14:53:50,100 INFO L125 PetriNetUnfolderBase]: For 406/438 co-relation queries the response was YES. [2024-11-13 14:53:50,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 2156 events. 1101/2156 cut-off events. For 406/438 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12189 event pairs, 484 based on Foata normal form. 0/2065 useless extension candidates. Maximal degree in co-relation 4274. Up to 1037 conditions per place. [2024-11-13 14:53:50,110 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 46 selfloop transitions, 4 changer transitions 2/66 dead transitions. [2024-11-13 14:53:50,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2024-11-13 14:53:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-13 14:53:50,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-11-13 14:53:50,113 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 124 flow. Second operand 3 states and 110 transitions. [2024-11-13 14:53:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2024-11-13 14:53:50,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:50,118 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 149 flow [2024-11-13 14:53:50,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-13 14:53:50,118 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-13 14:53:50,120 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 149 flow [2024-11-13 14:53:50,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 14:53:50,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:50,120 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:50,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:50,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:50,325 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:50,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1737891400, now seen corresponding path program 1 times [2024-11-13 14:53:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682158812] [2024-11-13 14:53:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:50,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:50,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:53:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:50,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:50,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:50,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:50,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682158812] [2024-11-13 14:53:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682158812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:50,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111619605] [2024-11-13 14:53:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:50,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:50,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-11-13 14:53:50,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 14:53:50,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:50,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-11-13 14:53:50,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:50,865 INFO L124 PetriNetUnfolderBase]: 1020/1999 cut-off events. [2024-11-13 14:53:50,865 INFO L125 PetriNetUnfolderBase]: For 289/301 co-relation queries the response was YES. [2024-11-13 14:53:50,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 1999 events. 1020/1999 cut-off events. For 289/301 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9859 event pairs, 415 based on Foata normal form. 0/1916 useless extension candidates. Maximal degree in co-relation 3980. Up to 1094 conditions per place. [2024-11-13 14:53:50,875 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 41 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2024-11-13 14:53:50,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 267 flow [2024-11-13 14:53:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-13 14:53:50,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-11-13 14:53:50,877 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 149 flow. Second operand 3 states and 105 transitions. [2024-11-13 14:53:50,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 267 flow [2024-11-13 14:53:50,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 257 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:50,880 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 153 flow [2024-11-13 14:53:50,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-13 14:53:50,884 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-13 14:53:50,884 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 153 flow [2024-11-13 14:53:50,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 14:53:50,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:50,885 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] [2024-11-13 14:53:50,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:51,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,089 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:51,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1451639077, now seen corresponding path program 1 times [2024-11-13 14:53:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221322274] [2024-11-13 14:53:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:51,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:51,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:51,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:53:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:51,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:53:51,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:51,255 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 9 [2024-11-13 14:53:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:51,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:51,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221322274] [2024-11-13 14:53:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221322274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:51,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:51,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622304807] [2024-11-13 14:53:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:51,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:51,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:51,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:53:51,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:51,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:51,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:51,632 INFO L124 PetriNetUnfolderBase]: 663/1498 cut-off events. [2024-11-13 14:53:51,632 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-13 14:53:51,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 1498 events. 663/1498 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7170 event pairs, 220 based on Foata normal form. 76/1540 useless extension candidates. Maximal degree in co-relation 2939. Up to 618 conditions per place. [2024-11-13 14:53:51,640 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 37 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-13 14:53:51,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 257 flow [2024-11-13 14:53:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:53:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-13 14:53:51,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-13 14:53:51,642 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 153 flow. Second operand 3 states and 104 transitions. [2024-11-13 14:53:51,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 257 flow [2024-11-13 14:53:51,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:53:51,647 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 155 flow [2024-11-13 14:53:51,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-13 14:53:51,648 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-13 14:53:51,649 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 155 flow [2024-11-13 14:53:51,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:53:51,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:51,649 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] [2024-11-13 14:53:51,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:53:51,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,853 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:51,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:51,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1550014654, now seen corresponding path program 1 times [2024-11-13 14:53:51,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:51,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559085846] [2024-11-13 14:53:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:51,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:51,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:53:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:51,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:53:51,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:52,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:52,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559085846] [2024-11-13 14:53:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559085846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:52,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237816552] [2024-11-13 14:53:52,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:52,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:53:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:53:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:52,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:52,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 14:53:52,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:52,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:52,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:53,038 INFO L124 PetriNetUnfolderBase]: 1336/2869 cut-off events. [2024-11-13 14:53:53,038 INFO L125 PetriNetUnfolderBase]: For 639/643 co-relation queries the response was YES. [2024-11-13 14:53:53,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 2869 events. 1336/2869 cut-off events. For 639/643 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15631 event pairs, 724 based on Foata normal form. 0/2763 useless extension candidates. Maximal degree in co-relation 6016. Up to 1101 conditions per place. [2024-11-13 14:53:53,079 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 78 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-13 14:53:53,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 479 flow [2024-11-13 14:53:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-13 14:53:53,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6681034482758621 [2024-11-13 14:53:53,083 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 155 flow. Second operand 4 states and 155 transitions. [2024-11-13 14:53:53,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 479 flow [2024-11-13 14:53:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:53:53,089 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 167 flow [2024-11-13 14:53:53,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-13 14:53:53,091 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-13 14:53:53,091 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 167 flow [2024-11-13 14:53:53,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 14:53:53,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:53,091 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, 1, 1] [2024-11-13 14:53:53,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:53:53,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:53,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:53,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1640262734, now seen corresponding path program 1 times [2024-11-13 14:53:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977743527] [2024-11-13 14:53:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:53,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:53,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:53:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:53,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:53:53,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:53,679 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:53,679 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977743527] [2024-11-13 14:53:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977743527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125730479] [2024-11-13 14:53:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:53,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:53,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-11-13 14:53:53,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:53:53,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:53,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-11-13 14:53:53,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:54,168 INFO L124 PetriNetUnfolderBase]: 937/2032 cut-off events. [2024-11-13 14:53:54,168 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-11-13 14:53:54,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 2032 events. 937/2032 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9979 event pairs, 422 based on Foata normal form. 7/1987 useless extension candidates. Maximal degree in co-relation 4141. Up to 1045 conditions per place. [2024-11-13 14:53:54,178 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 53 selfloop transitions, 3 changer transitions 3/76 dead transitions. [2024-11-13 14:53:54,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 356 flow [2024-11-13 14:53:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:53:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-13 14:53:54,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2024-11-13 14:53:54,179 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 167 flow. Second operand 4 states and 142 transitions. [2024-11-13 14:53:54,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 356 flow [2024-11-13 14:53:54,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:53:54,185 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 177 flow [2024-11-13 14:53:54,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-11-13 14:53:54,188 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-13 14:53:54,188 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 177 flow [2024-11-13 14:53:54,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 14:53:54,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:54,188 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, 1, 1, 1] [2024-11-13 14:53:54,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:53:54,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:54,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:54,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash 661848035, now seen corresponding path program 1 times [2024-11-13 14:53:54,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:54,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644260416] [2024-11-13 14:53:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:54,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:54,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:53:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:54,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:53:54,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:54,962 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 12 treesize of output 8 [2024-11-13 14:53:55,295 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 18 treesize of output 10 [2024-11-13 14:53:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:55,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:55,352 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644260416] [2024-11-13 14:53:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644260416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:53:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491039373] [2024-11-13 14:53:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:55,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:53:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:53:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:53:55,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:55,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 177 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:53:55,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:55,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:56,800 INFO L124 PetriNetUnfolderBase]: 1096/2359 cut-off events. [2024-11-13 14:53:56,800 INFO L125 PetriNetUnfolderBase]: For 669/669 co-relation queries the response was YES. [2024-11-13 14:53:56,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2359 events. 1096/2359 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12172 event pairs, 450 based on Foata normal form. 27/2337 useless extension candidates. Maximal degree in co-relation 4903. Up to 1398 conditions per place. [2024-11-13 14:53:56,816 INFO L140 encePairwiseOnDemand]: 44/58 looper letters, 81 selfloop transitions, 14 changer transitions 17/127 dead transitions. [2024-11-13 14:53:56,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 621 flow [2024-11-13 14:53:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:53:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 14:53:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 322 transitions. [2024-11-13 14:53:56,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5047021943573667 [2024-11-13 14:53:56,821 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 177 flow. Second operand 11 states and 322 transitions. [2024-11-13 14:53:56,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 621 flow [2024-11-13 14:53:56,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 127 transitions, 612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:56,826 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 289 flow [2024-11-13 14:53:56,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=289, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-11-13 14:53:56,828 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-11-13 14:53:56,828 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 289 flow [2024-11-13 14:53:56,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:53:56,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:56,829 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, 1, 1, 1] [2024-11-13 14:53:56,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:53:57,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:57,033 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:57,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1597641163, now seen corresponding path program 2 times [2024-11-13 14:53:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997376166] [2024-11-13 14:53:57,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:53:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:57,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:57,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:53:57,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:53:57,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:57,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:53:57,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:57,545 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 12 treesize of output 8 [2024-11-13 14:53:57,813 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 18 treesize of output 10 [2024-11-13 14:53:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:57,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:57,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:53:57,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997376166] [2024-11-13 14:53:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997376166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:57,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:57,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:53:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709747517] [2024-11-13 14:53:57,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:57,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:53:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:53:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:53:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:53:58,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:53:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:53:58,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:53:58,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:53:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:53:59,139 INFO L124 PetriNetUnfolderBase]: 1235/2680 cut-off events. [2024-11-13 14:53:59,139 INFO L125 PetriNetUnfolderBase]: For 2688/2688 co-relation queries the response was YES. [2024-11-13 14:53:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7273 conditions, 2680 events. 1235/2680 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14493 event pairs, 495 based on Foata normal form. 31/2658 useless extension candidates. Maximal degree in co-relation 7246. Up to 1664 conditions per place. [2024-11-13 14:53:59,153 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 89 selfloop transitions, 20 changer transitions 10/134 dead transitions. [2024-11-13 14:53:59,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 843 flow [2024-11-13 14:53:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:53:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 14:53:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 320 transitions. [2024-11-13 14:53:59,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015673981191222 [2024-11-13 14:53:59,156 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 289 flow. Second operand 11 states and 320 transitions. [2024-11-13 14:53:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 843 flow [2024-11-13 14:53:59,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 828 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:53:59,173 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 500 flow [2024-11-13 14:53:59,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=500, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-13 14:53:59,174 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-11-13 14:53:59,174 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 500 flow [2024-11-13 14:53:59,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:53:59,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:53:59,174 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, 1, 1, 1] [2024-11-13 14:53:59,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:53:59,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:59,379 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:53:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1102080023, now seen corresponding path program 3 times [2024-11-13 14:53:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:53:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219638998] [2024-11-13 14:53:59,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:53:59,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:59,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:53:59,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 14:53:59,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:53:59,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:53:59,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:59,866 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 12 treesize of output 8 [2024-11-13 14:54:00,124 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 18 treesize of output 10 [2024-11-13 14:54:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:54:00,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:00,175 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219638998] [2024-11-13 14:54:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219638998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:54:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433168366] [2024-11-13 14:54:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:00,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:54:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:54:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:54:00,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:54:00,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 500 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:54:00,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:54:00,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:54:00,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:54:01,745 INFO L124 PetriNetUnfolderBase]: 1395/3045 cut-off events. [2024-11-13 14:54:01,745 INFO L125 PetriNetUnfolderBase]: For 6685/6689 co-relation queries the response was YES. [2024-11-13 14:54:01,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 3045 events. 1395/3045 cut-off events. For 6685/6689 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 16931 event pairs, 466 based on Foata normal form. 13/3021 useless extension candidates. Maximal degree in co-relation 9326. Up to 1934 conditions per place. [2024-11-13 14:54:01,758 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 108 selfloop transitions, 20 changer transitions 4/147 dead transitions. [2024-11-13 14:54:01,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1088 flow [2024-11-13 14:54:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:54:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 14:54:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-11-13 14:54:01,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49686520376175547 [2024-11-13 14:54:01,760 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 500 flow. Second operand 11 states and 317 transitions. [2024-11-13 14:54:01,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1088 flow [2024-11-13 14:54:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1014 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-13 14:54:01,782 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 631 flow [2024-11-13 14:54:01,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=631, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-11-13 14:54:01,785 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-11-13 14:54:01,785 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 631 flow [2024-11-13 14:54:01,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:54:01,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:54:01,787 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, 1, 1, 1] [2024-11-13 14:54:01,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:54:01,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:01,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:54:01,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash 545630067, now seen corresponding path program 4 times [2024-11-13 14:54:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:01,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972048556] [2024-11-13 14:54:01,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:54:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:01,990 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:54:02,135 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:54:02,135 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:54:02,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:54:02,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:02,370 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 12 treesize of output 8 [2024-11-13 14:54:02,639 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 18 treesize of output 10 [2024-11-13 14:54:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:54:02,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:02,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:02,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972048556] [2024-11-13 14:54:02,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972048556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:02,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:02,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:54:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993198188] [2024-11-13 14:54:02,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:02,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:54:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:54:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:54:02,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-11-13 14:54:02,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 631 flow. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:54:02,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:54:02,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-11-13 14:54:02,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:54:04,139 INFO L124 PetriNetUnfolderBase]: 1539/3349 cut-off events. [2024-11-13 14:54:04,139 INFO L125 PetriNetUnfolderBase]: For 8076/8086 co-relation queries the response was YES. [2024-11-13 14:54:04,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 3349 events. 1539/3349 cut-off events. For 8076/8086 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 19212 event pairs, 316 based on Foata normal form. 17/3329 useless extension candidates. Maximal degree in co-relation 10522. Up to 1245 conditions per place. [2024-11-13 14:54:04,160 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 97 selfloop transitions, 52 changer transitions 11/175 dead transitions. [2024-11-13 14:54:04,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 175 transitions, 1341 flow [2024-11-13 14:54:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:54:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 14:54:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 397 transitions. [2024-11-13 14:54:04,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48891625615763545 [2024-11-13 14:54:04,165 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 631 flow. Second operand 14 states and 397 transitions. [2024-11-13 14:54:04,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 175 transitions, 1341 flow [2024-11-13 14:54:04,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1295 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-13 14:54:04,189 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 849 flow [2024-11-13 14:54:04,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=849, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2024-11-13 14:54:04,190 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-11-13 14:54:04,190 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 849 flow [2024-11-13 14:54:04,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 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 14:54:04,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:54:04,191 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:04,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:54:04,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:04,391 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:54:04,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash -487981019, now seen corresponding path program 1 times [2024-11-13 14:54:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:04,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772326923] [2024-11-13 14:54:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:04,394 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:04,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:54:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:54:04,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:54:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:54:04,653 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 14:54:04,653 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:54:04,654 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-11-13 14:54:04,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-13 14:54:04,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-11-13 14:54:04,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-13 14:54:04,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-13 14:54:04,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-11-13 14:54:04,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-13 14:54:04,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-11-13 14:54:04,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:54:04,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:04,858 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:04,921 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:54:04,921 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:54:04,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:54:04 BasicIcfg [2024-11-13 14:54:04,926 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:54:04,926 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:54:04,926 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:54:04,926 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:54:04,927 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:45" (3/4) ... [2024-11-13 14:54:04,929 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:54:04,930 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:54:04,930 INFO L158 Benchmark]: Toolchain (without parser) took 21628.26ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 91.4MB in the beginning and 125.7MB in the end (delta: -34.2MB). Peak memory consumption was 196.5MB. Max. memory is 16.1GB. [2024-11-13 14:54:04,931 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:54:04,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.41ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 69.4MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 14:54:04,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.44ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:54:04,931 INFO L158 Benchmark]: Boogie Preprocessor took 51.42ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 64.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:54:04,932 INFO L158 Benchmark]: RCFGBuilder took 1147.12ms. Allocated memory is still 117.4MB. Free memory was 64.6MB in the beginning and 84.4MB in the end (delta: -19.8MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2024-11-13 14:54:04,932 INFO L158 Benchmark]: TraceAbstraction took 19727.60ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 83.7MB in the beginning and 125.8MB in the end (delta: -42.1MB). Peak memory consumption was 190.1MB. Max. memory is 16.1GB. [2024-11-13 14:54:04,932 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 352.3MB. Free memory was 125.8MB in the beginning and 125.7MB in the end (delta: 170.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:54:04,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.41ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 69.4MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.44ms. Allocated memory is still 117.4MB. Free memory was 69.4MB in the beginning and 67.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.42ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 64.6MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1147.12ms. Allocated memory is still 117.4MB. Free memory was 64.6MB in the beginning and 84.4MB in the end (delta: -19.8MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19727.60ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 83.7MB in the beginning and 125.8MB in the end (delta: -42.1MB). Peak memory consumption was 190.1MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 352.3MB. Free memory was 125.8MB in the beginning and 125.7MB in the end (delta: 170.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 681. Possible FailurePath: [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1=-1, id2=0, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L740] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=1, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [\old(arg)={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 VAL [buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=0, receive=0, send=1] [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] CALL 2 reach_error() [L681] COND FALSE 2 !(0) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] [L681] 2 __assert_fail ("0", "", 0, __extension__ __PRETTY_FUNCTION__) VAL [buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=1, receive=1, send=0] - UnprovableResult [Line: 754]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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: 762]: 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: 681]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 15 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: 19.5s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 916 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 809 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3408 IncrementalHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 18 mSDtfsCounter, 3408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=849occurred in iteration=13, InterpolantAutomatonStates: 77, 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, 0.6s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 281 NumberOfCodeBlocks, 281 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 3061 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1333 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 6/6 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 14:54:04,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075748aa-a672-43aa-8cb6-e73f53131d5f/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