./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:04:19,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:04:19,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:04:19,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:04:19,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:04:19,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:04:19,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:04:19,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:04:19,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:04:19,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:04:19,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:04:19,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:04:19,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:04:19,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:04:19,163 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:04:19,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:04:19,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:04:19,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:04:19,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:04:19,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:04:19,168 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:04:19,172 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:04:19,172 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:04:19,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:04:19,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:04:19,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:04:19,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:04:19,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:04:19,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:04:19,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:04:19,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:04:19,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:04:19,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:04:19,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:19,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:04:19,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:04:19,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:04:19,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:04:19,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:04:19,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:04:19,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:04:19,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:04:19,183 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-10-31 22:04:19,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:19,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:19,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:19,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:19,553 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:19,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i Unable to find full path for "g++" [2024-10-31 22:04:21,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:21,919 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:21,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-10-31 22:04:21,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/data/3e6256c3e/2fd5726c0726481c9bc64ae5ecb8d10b/FLAG2b33d0c6d [2024-10-31 22:04:21,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/data/3e6256c3e/2fd5726c0726481c9bc64ae5ecb8d10b [2024-10-31 22:04:21,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:21,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:21,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:21,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:21,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:21,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:21" (1/1) ... [2024-10-31 22:04:21,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf79c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:21, skipping insertion in model container [2024-10-31 22:04:21,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:21" (1/1) ... [2024-10-31 22:04:22,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:22,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:22,694 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:22,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:22,840 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:22,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22 WrapperNode [2024-10-31 22:04:22,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:22,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:22,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:22,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:22,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,908 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 262 [2024-10-31 22:04:22,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:22,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:22,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:22,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:22,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,967 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-10-31 22:04:22,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:22,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:22,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:22,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:22,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:22,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (1/1) ... [2024-10-31 22:04:23,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:23,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:23,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:04:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:04:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:04:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:04:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:04:23,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:04:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:04:23,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:04:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:04:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:23,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:23,067 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:04:23,249 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:23,250 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:23,704 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:04:23,704 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:25,109 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:25,110 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:04:25,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:25 BoogieIcfgContainer [2024-10-31 22:04:25,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:25,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:25,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:25,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:25,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:21" (1/3) ... [2024-10-31 22:04:25,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52909040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:25, skipping insertion in model container [2024-10-31 22:04:25,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:22" (2/3) ... [2024-10-31 22:04:25,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52909040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:25, skipping insertion in model container [2024-10-31 22:04:25,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:25" (3/3) ... [2024-10-31 22:04:25,122 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-10-31 22:04:25,143 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:25,143 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:04:25,143 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:04:25,205 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:04:25,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 100 flow [2024-10-31 22:04:25,302 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-10-31 22:04:25,303 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:04:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 7/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-10-31 22:04:25,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 43 transitions, 100 flow [2024-10-31 22:04:25,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 40 transitions, 92 flow [2024-10-31 22:04:25,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:25,340 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;@2ac16f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:25,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:04:25,373 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:04:25,373 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-10-31 22:04:25,374 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:04:25,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:25,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:25,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:25,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1079441311, now seen corresponding path program 1 times [2024-10-31 22:04:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:25,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932577384] [2024-10-31 22:04:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:26,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:26,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932577384] [2024-10-31 22:04:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932577384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158994084] [2024-10-31 22:04:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:26,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:26,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:26,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-10-31 22:04:26,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 22:04:26,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:26,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-10-31 22:04:26,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:26,937 INFO L124 PetriNetUnfolderBase]: 441/787 cut-off events. [2024-10-31 22:04:26,937 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:04:26,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 787 events. 441/787 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3703 event pairs, 173 based on Foata normal form. 20/778 useless extension candidates. Maximal degree in co-relation 1442. Up to 419 conditions per place. [2024-10-31 22:04:26,949 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 39 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-31 22:04:26,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 205 flow [2024-10-31 22:04:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-31 22:04:26,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2024-10-31 22:04:26,967 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 92 flow. Second operand 3 states and 89 transitions. [2024-10-31 22:04:26,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 205 flow [2024-10-31 22:04:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 195 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:04:26,975 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 90 flow [2024-10-31 22:04:26,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-10-31 22:04:26,982 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-31 22:04:26,983 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 90 flow [2024-10-31 22:04:26,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-31 22:04:26,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:26,984 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] [2024-10-31 22:04:26,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:04:26,985 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:26,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1219930273, now seen corresponding path program 1 times [2024-10-31 22:04:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182305238] [2024-10-31 22:04:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182305238] [2024-10-31 22:04:27,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182305238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:27,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:27,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:27,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353712954] [2024-10-31 22:04:27,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:27,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:27,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-10-31 22:04:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-31 22:04:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-10-31 22:04:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:28,018 INFO L124 PetriNetUnfolderBase]: 742/1327 cut-off events. [2024-10-31 22:04:28,019 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-31 22:04:28,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 1327 events. 742/1327 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6781 event pairs, 300 based on Foata normal form. 29/1324 useless extension candidates. Maximal degree in co-relation 964. Up to 697 conditions per place. [2024-10-31 22:04:28,028 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 40 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-31 22:04:28,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 219 flow [2024-10-31 22:04:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-31 22:04:28,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:04:28,031 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 90 flow. Second operand 3 states and 86 transitions. [2024-10-31 22:04:28,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 219 flow [2024-10-31 22:04:28,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:28,034 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 100 flow [2024-10-31 22:04:28,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-10-31 22:04:28,035 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-10-31 22:04:28,036 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 100 flow [2024-10-31 22:04:28,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-31 22:04:28,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:28,036 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] [2024-10-31 22:04:28,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:04:28,038 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:28,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 737018549, now seen corresponding path program 1 times [2024-10-31 22:04:28,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:28,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301665306] [2024-10-31 22:04:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:28,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301665306] [2024-10-31 22:04:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301665306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:28,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:28,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255970326] [2024-10-31 22:04:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:28,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:28,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:28,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:28,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-10-31 22:04:28,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:04:28,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:28,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-10-31 22:04:28,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:28,866 INFO L124 PetriNetUnfolderBase]: 428/900 cut-off events. [2024-10-31 22:04:28,866 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-10-31 22:04:28,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 900 events. 428/900 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4334 event pairs, 182 based on Foata normal form. 64/958 useless extension candidates. Maximal degree in co-relation 629. Up to 373 conditions per place. [2024-10-31 22:04:28,872 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 30 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-10-31 22:04:28,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 220 flow [2024-10-31 22:04:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-10-31 22:04:28,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-31 22:04:28,876 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-10-31 22:04:28,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 220 flow [2024-10-31 22:04:28,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:28,881 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2024-10-31 22:04:28,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2024-10-31 22:04:28,882 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-10-31 22:04:28,883 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2024-10-31 22:04:28,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-31 22:04:28,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:28,883 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] [2024-10-31 22:04:28,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:04:28,884 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:28,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 419044627, now seen corresponding path program 2 times [2024-10-31 22:04:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890476873] [2024-10-31 22:04:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890476873] [2024-10-31 22:04:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890476873] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:29,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348662820] [2024-10-31 22:04:29,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:04:29,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:29,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:29,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:04:30,236 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:04:30,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:30,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:04:30,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:30,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348662820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:30,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-31 22:04:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561031601] [2024-10-31 22:04:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:30,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:04:30,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-10-31 22:04:30,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-31 22:04:30,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:30,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-10-31 22:04:30,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:30,473 INFO L124 PetriNetUnfolderBase]: 465/947 cut-off events. [2024-10-31 22:04:30,473 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-10-31 22:04:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2255 conditions, 947 events. 465/947 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4679 event pairs, 324 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 805. Up to 778 conditions per place. [2024-10-31 22:04:30,480 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 25 selfloop transitions, 1 changer transitions 3/38 dead transitions. [2024-10-31 22:04:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 164 flow [2024-10-31 22:04:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-31 22:04:30,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-10-31 22:04:30,482 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 3 states and 67 transitions. [2024-10-31 22:04:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 164 flow [2024-10-31 22:04:30,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:30,486 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 100 flow [2024-10-31 22:04:30,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-10-31 22:04:30,487 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-10-31 22:04:30,487 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 100 flow [2024-10-31 22:04:30,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-31 22:04:30,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:30,488 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, 1] [2024-10-31 22:04:30,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:04:30,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:30,691 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:30,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -555787655, now seen corresponding path program 1 times [2024-10-31 22:04:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171694876] [2024-10-31 22:04:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:31,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171694876] [2024-10-31 22:04:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171694876] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166643053] [2024-10-31 22:04:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:31,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:31,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:31,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:04:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:31,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:04:31,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:31,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166643053] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:31,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:04:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192725343] [2024-10-31 22:04:31,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:31,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:04:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:04:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:04:31,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-10-31 22:04:31,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-31 22:04:31,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:31,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-10-31 22:04:31,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:32,301 INFO L124 PetriNetUnfolderBase]: 1031/2003 cut-off events. [2024-10-31 22:04:32,301 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-10-31 22:04:32,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 2003 events. 1031/2003 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10124 event pairs, 132 based on Foata normal form. 90/2087 useless extension candidates. Maximal degree in co-relation 4459. Up to 396 conditions per place. [2024-10-31 22:04:32,314 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 90 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2024-10-31 22:04:32,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 498 flow [2024-10-31 22:04:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-10-31 22:04:32,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2024-10-31 22:04:32,317 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 100 flow. Second operand 6 states and 178 transitions. [2024-10-31 22:04:32,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 498 flow [2024-10-31 22:04:32,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 104 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:32,320 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 139 flow [2024-10-31 22:04:32,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-10-31 22:04:32,321 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-10-31 22:04:32,321 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 139 flow [2024-10-31 22:04:32,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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) [2024-10-31 22:04:32,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:32,322 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:32,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:04:32,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:32,523 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:32,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash -849894843, now seen corresponding path program 2 times [2024-10-31 22:04:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:32,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795139142] [2024-10-31 22:04:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 22:04:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795139142] [2024-10-31 22:04:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795139142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980461561] [2024-10-31 22:04:32,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:04:32,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:32,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:32,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:04:33,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:04:33,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:33,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:33,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 22:04:33,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:33,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980461561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:33,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:33,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-31 22:04:33,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039928421] [2024-10-31 22:04:33,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:33,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:33,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:33,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-31 22:04:33,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-31 22:04:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-31 22:04:33,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:33,982 INFO L124 PetriNetUnfolderBase]: 894/1788 cut-off events. [2024-10-31 22:04:33,982 INFO L125 PetriNetUnfolderBase]: For 1125/1125 co-relation queries the response was YES. [2024-10-31 22:04:33,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4367 conditions, 1788 events. 894/1788 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8022 event pairs, 233 based on Foata normal form. 0/1691 useless extension candidates. Maximal degree in co-relation 4355. Up to 837 conditions per place. [2024-10-31 22:04:33,996 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 47 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-10-31 22:04:33,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 329 flow [2024-10-31 22:04:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-31 22:04:33,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563953488372093 [2024-10-31 22:04:33,998 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 139 flow. Second operand 4 states and 97 transitions. [2024-10-31 22:04:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 329 flow [2024-10-31 22:04:34,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 314 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:34,003 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 156 flow [2024-10-31 22:04:34,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-31 22:04:34,004 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-10-31 22:04:34,004 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 156 flow [2024-10-31 22:04:34,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2024-10-31 22:04:34,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:34,005 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:34,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:04:34,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:34,210 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:34,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1805176397, now seen corresponding path program 3 times [2024-10-31 22:04:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:34,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963682288] [2024-10-31 22:04:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963682288] [2024-10-31 22:04:34,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963682288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:34,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040202352] [2024-10-31 22:04:34,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:04:34,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:34,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:34,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:04:35,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-31 22:04:35,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:35,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:35,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:35,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040202352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:35,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-10-31 22:04:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274274948] [2024-10-31 22:04:35,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:35,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:04:35,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:04:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:04:35,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-10-31 22:04:35,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-10-31 22:04:35,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:35,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-10-31 22:04:35,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:36,192 INFO L124 PetriNetUnfolderBase]: 1852/3711 cut-off events. [2024-10-31 22:04:36,192 INFO L125 PetriNetUnfolderBase]: For 2289/2289 co-relation queries the response was YES. [2024-10-31 22:04:36,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 3711 events. 1852/3711 cut-off events. For 2289/2289 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 21004 event pairs, 209 based on Foata normal form. 207/3908 useless extension candidates. Maximal degree in co-relation 9301. Up to 1072 conditions per place. [2024-10-31 22:04:36,220 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 93 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-10-31 22:04:36,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 109 transitions, 644 flow [2024-10-31 22:04:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-10-31 22:04:36,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6589147286821705 [2024-10-31 22:04:36,222 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 156 flow. Second operand 6 states and 170 transitions. [2024-10-31 22:04:36,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 109 transitions, 644 flow [2024-10-31 22:04:36,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:36,229 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 195 flow [2024-10-31 22:04:36,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2024-10-31 22:04:36,230 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-10-31 22:04:36,230 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 195 flow [2024-10-31 22:04:36,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-10-31 22:04:36,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:36,231 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:36,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:04:36,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:04:36,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:36,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 487165183, now seen corresponding path program 4 times [2024-10-31 22:04:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479091198] [2024-10-31 22:04:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:37,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479091198] [2024-10-31 22:04:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479091198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661023258] [2024-10-31 22:04:37,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:04:37,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:37,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:37,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:04:37,731 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:04:37,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:37,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:04:37,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-31 22:04:37,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-31 22:04:37,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661023258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:37,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:37,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-10-31 22:04:37,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146023092] [2024-10-31 22:04:37,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:37,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:37,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-31 22:04:37,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-31 22:04:37,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:37,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-31 22:04:37,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:38,247 INFO L124 PetriNetUnfolderBase]: 544/1203 cut-off events. [2024-10-31 22:04:38,247 INFO L125 PetriNetUnfolderBase]: For 1510/1512 co-relation queries the response was YES. [2024-10-31 22:04:38,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 1203 events. 544/1203 cut-off events. For 1510/1512 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4937 event pairs, 149 based on Foata normal form. 0/1197 useless extension candidates. Maximal degree in co-relation 3416. Up to 528 conditions per place. [2024-10-31 22:04:38,257 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-10-31 22:04:38,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 400 flow [2024-10-31 22:04:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-10-31 22:04:38,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523255813953488 [2024-10-31 22:04:38,259 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 195 flow. Second operand 4 states and 95 transitions. [2024-10-31 22:04:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 400 flow [2024-10-31 22:04:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 384 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:38,264 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 183 flow [2024-10-31 22:04:38,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2024-10-31 22:04:38,265 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-10-31 22:04:38,268 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 183 flow [2024-10-31 22:04:38,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-31 22:04:38,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:38,269 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:38,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:04:38,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:38,474 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-31 22:04:38,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1960389571, now seen corresponding path program 5 times [2024-10-31 22:04:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:38,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067244479] [2024-10-31 22:04:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:39,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:39,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067244479] [2024-10-31 22:04:39,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067244479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109068903] [2024-10-31 22:04:39,769 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:04:39,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:39,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:39,772 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:39,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:04:40,525 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-31 22:04:40,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:04:40,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-31 22:04:40,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:40,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109068903] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:41,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:41,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-10-31 22:04:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097650739] [2024-10-31 22:04:41,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:41,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-31 22:04:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-31 22:04:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-10-31 22:04:41,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-10-31 22:04:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 183 flow. Second operand has 31 states, 31 states have (on average 17.129032258064516) internal successors, (531), 31 states have internal predecessors, (531), 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) [2024-10-31 22:04:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-10-31 22:04:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:43,220 INFO L124 PetriNetUnfolderBase]: 589/1255 cut-off events. [2024-10-31 22:04:43,221 INFO L125 PetriNetUnfolderBase]: For 1429/1429 co-relation queries the response was YES. [2024-10-31 22:04:43,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3550 conditions, 1255 events. 589/1255 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5111 event pairs, 39 based on Foata normal form. 30/1281 useless extension candidates. Maximal degree in co-relation 3529. Up to 232 conditions per place. [2024-10-31 22:04:43,227 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2024-10-31 22:04:43,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 130 transitions, 817 flow [2024-10-31 22:04:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:04:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:04:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-10-31 22:04:43,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5329457364341085 [2024-10-31 22:04:43,229 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 183 flow. Second operand 12 states and 275 transitions. [2024-10-31 22:04:43,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 130 transitions, 817 flow [2024-10-31 22:04:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 130 transitions, 785 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:04:43,235 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2024-10-31 22:04:43,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2024-10-31 22:04:43,237 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-10-31 22:04:43,239 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2024-10-31 22:04:43,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 17.129032258064516) internal successors, (531), 31 states have internal predecessors, (531), 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) [2024-10-31 22:04:43,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-10-31 22:04:43,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-31 22:04:43,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-31 22:04:43,245 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-31 22:04:43,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:04:43,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:43,446 INFO L407 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2024-10-31 22:04:43,450 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:04:43,450 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:04:43,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:04:43 BasicIcfg [2024-10-31 22:04:43,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:04:43,462 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:04:43,462 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:04:43,463 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:04:43,463 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:25" (3/4) ... [2024-10-31 22:04:43,466 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-10-31 22:04:43,470 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-31 22:04:43,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-31 22:04:43,488 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 257 nodes and edges [2024-10-31 22:04:43,489 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-31 22:04:43,490 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-31 22:04:43,492 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-31 22:04:43,493 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-31 22:04:43,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:04:43,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/witness.yml [2024-10-31 22:04:43,630 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:04:43,630 INFO L158 Benchmark]: Toolchain (without parser) took 21669.55ms. Allocated memory was 155.2MB in the beginning and 887.1MB in the end (delta: 731.9MB). Free memory was 115.7MB in the beginning and 748.6MB in the end (delta: -632.9MB). Peak memory consumption was 99.5MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,631 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:04:43,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 879.24ms. Allocated memory is still 155.2MB. Free memory was 115.7MB in the beginning and 85.3MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.71ms. Allocated memory is still 155.2MB. Free memory was 85.3MB in the beginning and 82.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,632 INFO L158 Benchmark]: Boogie Preprocessor took 85.36ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 78.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,632 INFO L158 Benchmark]: RCFGBuilder took 2116.11ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 77.5MB in the beginning and 126.3MB in the end (delta: -48.8MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,633 INFO L158 Benchmark]: TraceAbstraction took 18348.16ms. Allocated memory was 230.7MB in the beginning and 887.1MB in the end (delta: 656.4MB). Free memory was 126.3MB in the beginning and 755.9MB in the end (delta: -629.7MB). Peak memory consumption was 481.8MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,633 INFO L158 Benchmark]: Witness Printer took 167.84ms. Allocated memory is still 887.1MB. Free memory was 755.9MB in the beginning and 748.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-31 22:04:43,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 155.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 879.24ms. Allocated memory is still 155.2MB. Free memory was 115.7MB in the beginning and 85.3MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.71ms. Allocated memory is still 155.2MB. Free memory was 85.3MB in the beginning and 82.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.36ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 78.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2116.11ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 77.5MB in the beginning and 126.3MB in the end (delta: -48.8MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18348.16ms. Allocated memory was 230.7MB in the beginning and 887.1MB in the end (delta: 656.4MB). Free memory was 126.3MB in the beginning and 755.9MB in the end (delta: -629.7MB). Peak memory consumption was 481.8MB. Max. memory is 16.1GB. * Witness Printer took 167.84ms. Allocated memory is still 887.1MB. Free memory was 755.9MB in the beginning and 748.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 906]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 59 locations, 4 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: 18.2s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 398 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 387 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2233 IncrementalHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 2 mSDtfsCounter, 2233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 470 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=7, InterpolantAutomatonStates: 44, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 622 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 813 ConstructedInterpolants, 0 QuantifiedInterpolants, 3054 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2790 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 354/758 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-31 22:04:43,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b099f0e9-3a61-42f1-905d-c1af8554b33f/bin/uautomizer-verify-4GaUIPS5ZU/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: TRUE