./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_43-thread_create_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_43-thread_create_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI --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 4f10ff474b4a5b0ac51f5a2282c4b94cd510edf14cc1176b49d640deffa746e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:47:36,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:47:37,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:47:37,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:47:37,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:47:37,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:47:37,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:47:37,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:47:37,084 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:47:37,085 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:47:37,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:47:37,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:47:37,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:47:37,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:47:37,088 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:47:37,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:47:37,089 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:47:37,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:47:37,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:47:37,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:47:37,092 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:47:37,092 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:47:37,093 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:47:37,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:47:37,094 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:47:37,110 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:47:37,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:47:37,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:47:37,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:47:37,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:47:37,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:47:37,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:47:37,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:37,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:47:37,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:47:37,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:47:37,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:47:37,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:47:37,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:47:37,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:47:37,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:47:37,116 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_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f10ff474b4a5b0ac51f5a2282c4b94cd510edf14cc1176b49d640deffa746e5 [2023-11-24 21:47:37,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:47:37,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:47:37,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:47:37,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:47:37,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:47:37,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/04-mutex_43-thread_create_nr.i [2023-11-24 21:47:40,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:47:40,947 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:47:40,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/sv-benchmarks/c/goblint-regression/04-mutex_43-thread_create_nr.i [2023-11-24 21:47:40,977 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/data/57902b009/d73dd39672904f89beef04c0b828e620/FLAG8b58bb3fd [2023-11-24 21:47:40,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/data/57902b009/d73dd39672904f89beef04c0b828e620 [2023-11-24 21:47:40,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:47:40,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:47:40,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:40,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:47:41,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:47:41,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:40" (1/1) ... [2023-11-24 21:47:41,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116b8c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41, skipping insertion in model container [2023-11-24 21:47:41,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:47:40" (1/1) ... [2023-11-24 21:47:41,063 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:47:41,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:41,618 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:47:41,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:47:41,734 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:47:41,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41 WrapperNode [2023-11-24 21:47:41,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:47:41,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:41,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:47:41,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:47:41,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,784 INFO L138 Inliner]: procedures = 263, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2023-11-24 21:47:41,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:47:41,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:47:41,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:47:41,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:47:41,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,866 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [5, 1]. 83 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0]. The 1 writes are split as follows [0, 1]. [2023-11-24 21:47:41,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:47:41,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:47:41,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:47:41,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:47:41,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (1/1) ... [2023-11-24 21:47:41,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:47:41,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:47:41,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:47:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:47:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:47:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:47:41,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:47:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:47:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:47:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:47:42,000 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-24 21:47:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-24 21:47:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:47:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:47:42,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:47:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:47:42,004 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:47:42,175 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:47:42,178 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:47:42,345 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:47:42,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:47:42,462 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:47:42,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:42 BoogieIcfgContainer [2023-11-24 21:47:42,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:47:42,465 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:47:42,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:47:42,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:47:42,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:47:40" (1/3) ... [2023-11-24 21:47:42,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c15059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:42, skipping insertion in model container [2023-11-24 21:47:42,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:47:41" (2/3) ... [2023-11-24 21:47:42,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c15059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:47:42, skipping insertion in model container [2023-11-24 21:47:42,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:42" (3/3) ... [2023-11-24 21:47:42,475 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_43-thread_create_nr.i [2023-11-24 21:47:42,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:47:42,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 21:47:42,500 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:47:42,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:47:42,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 14 transitions, 32 flow [2023-11-24 21:47:42,600 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-24 21:47:42,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:42,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 13 events. 0/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-24 21:47:42,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 14 transitions, 32 flow [2023-11-24 21:47:42,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 12 transitions, 27 flow [2023-11-24 21:47:42,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:47:42,624 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@e75740, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:47:42,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 21:47:42,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:47:42,629 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:47:42,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:42,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:42,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:42,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-24 21:47:42,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 4696, now seen corresponding path program 1 times [2023-11-24 21:47:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:42,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319803124] [2023-11-24 21:47:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:42,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:42,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319803124] [2023-11-24 21:47:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319803124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:42,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:42,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:42,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835908791] [2023-11-24 21:47:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:43,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 14 [2023-11-24 21:47:43,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 21:47:43,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:43,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 14 [2023-11-24 21:47:43,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:43,106 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-11-24 21:47:43,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:47:43,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 23 events. 4/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 32. Up to 10 conditions per place. [2023-11-24 21:47:43,110 INFO L140 encePairwiseOnDemand]: 11/14 looper letters, 10 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-24 21:47:43,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 15 transitions, 57 flow [2023-11-24 21:47:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2023-11-24 21:47:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-11-24 21:47:43,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 25 transitions. [2023-11-24 21:47:43,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 25 transitions. [2023-11-24 21:47:43,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:43,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 25 transitions. [2023-11-24 21:47:43,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-24 21:47:43,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:43,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:43,132 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 25 transitions. [2023-11-24 21:47:43,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 15 transitions, 57 flow [2023-11-24 21:47:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:47:43,137 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 28 flow [2023-11-24 21:47:43,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-11-24 21:47:43,142 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2023-11-24 21:47:43,142 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 28 flow [2023-11-24 21:47:43,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 21:47:43,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:43,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:47:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:47:43,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-24 21:47:43,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:43,145 INFO L85 PathProgramCache]: Analyzing trace with hash 4697, now seen corresponding path program 1 times [2023-11-24 21:47:43,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:43,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112443172] [2023-11-24 21:47:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:43,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:43,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:43,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112443172] [2023-11-24 21:47:43,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112443172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:43,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:43,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:47:43,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962955792] [2023-11-24 21:47:43,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:43,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:47:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:47:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:47:43,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 14 [2023-11-24 21:47:43,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-24 21:47:43,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:43,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 14 [2023-11-24 21:47:43,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:43,323 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2023-11-24 21:47:43,324 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:47:43,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 22 events. 4/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 37. Up to 10 conditions per place. [2023-11-24 21:47:43,325 INFO L140 encePairwiseOnDemand]: 11/14 looper letters, 9 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-11-24 21:47:43,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 56 flow [2023-11-24 21:47:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:47:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:47:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2023-11-24 21:47:43,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-24 21:47:43,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 27 transitions. [2023-11-24 21:47:43,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 27 transitions. [2023-11-24 21:47:43,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:43,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 27 transitions. [2023-11-24 21:47:43,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-24 21:47:43,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:43,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-24 21:47:43,329 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 28 flow. Second operand 3 states and 27 transitions. [2023-11-24 21:47:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 56 flow [2023-11-24 21:47:43,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:43,330 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 26 flow [2023-11-24 21:47:43,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2023-11-24 21:47:43,331 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-11-24 21:47:43,332 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 26 flow [2023-11-24 21:47:43,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-24 21:47:43,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:43,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:47:43,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:47:43,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 1 more)] === [2023-11-24 21:47:43,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash 139993418, now seen corresponding path program 1 times [2023-11-24 21:47:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:43,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887954266] [2023-11-24 21:47:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:43,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:43,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887954266] [2023-11-24 21:47:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887954266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:47:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425596973] [2023-11-24 21:47:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:47:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:47:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:47:43,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 14 [2023-11-24 21:47:43,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-24 21:47:43,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 14 [2023-11-24 21:47:43,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:43,650 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-11-24 21:47:43,651 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:47:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 4/17 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 32. Up to 9 conditions per place. [2023-11-24 21:47:43,652 INFO L140 encePairwiseOnDemand]: 11/14 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-11-24 21:47:43,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 54 flow [2023-11-24 21:47:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:47:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:47:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2023-11-24 21:47:43,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-24 21:47:43,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 32 transitions. [2023-11-24 21:47:43,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 32 transitions. [2023-11-24 21:47:43,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:43,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 32 transitions. [2023-11-24 21:47:43,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:43,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:43,684 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:43,685 INFO L175 Difference]: Start difference. First operand has 15 places, 10 transitions, 26 flow. Second operand 4 states and 32 transitions. [2023-11-24 21:47:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 54 flow [2023-11-24 21:47:43,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:43,686 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-11-24 21:47:43,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-11-24 21:47:43,687 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-11-24 21:47:43,687 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-11-24 21:47:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-24 21:47:43,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 4 remaining) [2023-11-24 21:47:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 4 remaining) [2023-11-24 21:47:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2023-11-24 21:47:43,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-24 21:47:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:47:43,692 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 21:47:43,697 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:47:43,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:47:43,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:47:43 BasicIcfg [2023-11-24 21:47:43,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:47:43,720 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:47:43,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:47:43,721 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:47:43,721 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:47:42" (3/4) ... [2023-11-24 21:47:43,724 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:47:43,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-24 21:47:43,734 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-24 21:47:43,735 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 21:47:43,735 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:47:43,735 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:47:43,826 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:47:43,827 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:47:43,827 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:47:43,828 INFO L158 Benchmark]: Toolchain (without parser) took 2832.76ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 167.7MB in the beginning and 201.5MB in the end (delta: -33.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,828 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:43,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.54ms. Allocated memory is still 199.2MB. Free memory was 167.7MB in the beginning and 139.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.42ms. Allocated memory is still 199.2MB. Free memory was 139.4MB in the beginning and 137.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,830 INFO L158 Benchmark]: Boogie Preprocessor took 121.46ms. Allocated memory is still 199.2MB. Free memory was 137.3MB in the beginning and 165.4MB in the end (delta: -28.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,831 INFO L158 Benchmark]: RCFGBuilder took 554.79ms. Allocated memory is still 199.2MB. Free memory was 165.4MB in the beginning and 143.1MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,831 INFO L158 Benchmark]: TraceAbstraction took 1254.45ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 142.3MB in the beginning and 205.7MB in the end (delta: -63.4MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,832 INFO L158 Benchmark]: Witness Printer took 107.16ms. Allocated memory is still 239.1MB. Free memory was 205.7MB in the beginning and 201.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:47:43,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.54ms. Allocated memory is still 199.2MB. Free memory was 167.7MB in the beginning and 139.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.42ms. Allocated memory is still 199.2MB. Free memory was 139.4MB in the beginning and 137.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.46ms. Allocated memory is still 199.2MB. Free memory was 137.3MB in the beginning and 165.4MB in the end (delta: -28.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 554.79ms. Allocated memory is still 199.2MB. Free memory was 165.4MB in the beginning and 143.1MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1254.45ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 142.3MB in the beginning and 205.7MB in the end (delta: -63.4MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. * Witness Printer took 107.16ms. Allocated memory is still 239.1MB. Free memory was 205.7MB in the beginning and 201.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: 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 3 procedures, 22 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:47:43,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3dec181-2958-4d4c-ac87-c70bf2c7a918/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE