./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.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_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/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_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/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_95efd723-552d-47b8-9482-25c2d65dd0fd/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 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:03:54,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:03:54,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:03:54,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:03:54,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:03:54,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:03:54,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:03:54,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:03:54,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:03:54,257 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:03:54,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:03:54,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:03:54,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:03:54,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:03:54,260 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:03:54,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:03:54,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:03:54,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:03:54,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:03:54,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:03:54,264 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:03:54,265 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:03:54,265 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:03:54,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:03:54,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:03:54,267 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:03:54,267 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:03:54,268 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:03:54,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:03:54,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:03:54,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:03:54,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:03:54,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:54,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:03:54,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:03:54,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:03:54,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:03:54,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:03:54,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:03:54,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:03:54,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:03:54,276 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_95efd723-552d-47b8-9482-25c2d65dd0fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29686c593874684b7702dd35cbbbd25416d0d0dde1b2c7e324de66da32235cfd [2023-11-24 22:03:54,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:03:54,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:03:54,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:03:54,627 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:03:54,628 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:03:54,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-11-24 22:03:57,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:03:58,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:03:58,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/sv-benchmarks/c/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-11-24 22:03:58,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/data/e8d48993f/893c66b9327c4b3b8ac806266cce6328/FLAG0e789c2a8 [2023-11-24 22:03:58,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/data/e8d48993f/893c66b9327c4b3b8ac806266cce6328 [2023-11-24 22:03:58,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:03:58,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:03:58,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:58,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:03:58,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:03:58,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea02dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58, skipping insertion in model container [2023-11-24 22:03:58,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:58,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:58,659 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:03:58,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:58,748 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:03:58,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58 WrapperNode [2023-11-24 22:03:58,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:58,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:58,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:03:58,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:03:58,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,830 INFO L138 Inliner]: procedures = 164, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-11-24 22:03:58,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:58,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:03:58,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:03:58,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:03:58,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,887 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [5, 2, 5]. 42 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2023-11-24 22:03:58,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:03:58,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:03:58,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:03:58,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:03:58,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:03:58,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:03:58,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:03:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:03:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:03:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:03:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:03:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:03:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:03:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:03:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:03:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:03:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-24 22:03:59,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-24 22:03:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:03:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-24 22:03:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:03:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:03:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:03:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:03:59,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:03:59,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:03:59,003 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 22:03:59,162 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:03:59,164 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:03:59,376 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:03:59,525 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:03:59,525 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 22:03:59,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:59 BoogieIcfgContainer [2023-11-24 22:03:59,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:03:59,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:03:59,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:03:59,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:03:59,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:03:58" (1/3) ... [2023-11-24 22:03:59,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357395d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:59, skipping insertion in model container [2023-11-24 22:03:59,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (2/3) ... [2023-11-24 22:03:59,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357395d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:59, skipping insertion in model container [2023-11-24 22:03:59,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:59" (3/3) ... [2023-11-24 22:03:59,565 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_42-trylock_2mutex.i [2023-11-24 22:03:59,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:03:59,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-24 22:03:59,601 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:03:59,640 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-24 22:03:59,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 83 flow [2023-11-24 22:03:59,712 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2023-11-24 22:03:59,712 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 22:03:59,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 37 events. 2/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-24 22:03:59,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 38 transitions, 83 flow [2023-11-24 22:03:59,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 36 transitions, 78 flow [2023-11-24 22:03:59,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:03:59,738 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;@2e517303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:03:59,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 22:03:59,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:03:59,743 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:03:59,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:03:59,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:03:59,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:03:59,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-24 22:03:59,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash 7427, now seen corresponding path program 1 times [2023-11-24 22:03:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:59,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948709228] [2023-11-24 22:03:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,017 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 22:04:00,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:00,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948709228] [2023-11-24 22:04:00,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948709228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:00,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:00,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:04:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901637466] [2023-11-24 22:04:00,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:00,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:00,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:00,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2023-11-24 22:04:00,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:04:00,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2023-11-24 22:04:00,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:00,199 INFO L124 PetriNetUnfolderBase]: 78/207 cut-off events. [2023-11-24 22:04:00,199 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 22:04:00,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 207 events. 78/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 838 event pairs, 70 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 363. Up to 167 conditions per place. [2023-11-24 22:04:00,204 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 20 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 22:04:00,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 116 flow [2023-11-24 22:04:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2023-11-24 22:04:00,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-11-24 22:04:00,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 61 transitions. [2023-11-24 22:04:00,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 61 transitions. [2023-11-24 22:04:00,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:00,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 61 transitions. [2023-11-24 22:04:00,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 22:04:00,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,233 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 78 flow. Second operand 3 states and 61 transitions. [2023-11-24 22:04:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 116 flow [2023-11-24 22:04:00,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:00,240 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 72 flow [2023-11-24 22:04:00,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-24 22:04:00,247 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-11-24 22:04:00,247 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 72 flow [2023-11-24 22:04:00,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:04:00,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:00,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:04:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:04:00,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-24 22:04:00,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 7428, now seen corresponding path program 1 times [2023-11-24 22:04:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257388786] [2023-11-24 22:04:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,395 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 22:04:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257388786] [2023-11-24 22:04:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257388786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:00,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:00,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:04:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708093691] [2023-11-24 22:04:00,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:00,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2023-11-24 22:04:00,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 22:04:00,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:00,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2023-11-24 22:04:00,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:00,541 INFO L124 PetriNetUnfolderBase]: 71/191 cut-off events. [2023-11-24 22:04:00,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:04:00,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 191 events. 71/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 766 event pairs, 63 based on Foata normal form. 8/187 useless extension candidates. Maximal degree in co-relation 339. Up to 151 conditions per place. [2023-11-24 22:04:00,547 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 22:04:00,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 108 flow [2023-11-24 22:04:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2023-11-24 22:04:00,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-11-24 22:04:00,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2023-11-24 22:04:00,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2023-11-24 22:04:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:00,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2023-11-24 22:04:00,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-24 22:04:00,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,553 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 64 transitions. [2023-11-24 22:04:00,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 108 flow [2023-11-24 22:04:00,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:00,555 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 68 flow [2023-11-24 22:04:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-11-24 22:04:00,557 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2023-11-24 22:04:00,557 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 68 flow [2023-11-24 22:04:00,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 22:04:00,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:00,558 INFO L208 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] [2023-11-24 22:04:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:04:00,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-24 22:04:00,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1199845675, now seen corresponding path program 1 times [2023-11-24 22:04:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:00,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536677994] [2023-11-24 22:04:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,887 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 22:04:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536677994] [2023-11-24 22:04:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536677994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:00,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:00,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:04:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788727369] [2023-11-24 22:04:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:00,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:00,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-24 22:04:00,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 22:04:00,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:00,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-24 22:04:00,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:00,984 INFO L124 PetriNetUnfolderBase]: 55/172 cut-off events. [2023-11-24 22:04:00,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:04:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 172 events. 55/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 715 event pairs, 20 based on Foata normal form. 9/170 useless extension candidates. Maximal degree in co-relation 302. Up to 78 conditions per place. [2023-11-24 22:04:00,987 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 25 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-11-24 22:04:00,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 160 flow [2023-11-24 22:04:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-24 22:04:00,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2023-11-24 22:04:00,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-24 22:04:00,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-24 22:04:00,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:00,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-24 22:04:00,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:00,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 22:04:00,995 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 68 flow. Second operand 3 states and 84 transitions. [2023-11-24 22:04:00,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 160 flow [2023-11-24 22:04:00,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:00,997 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 108 flow [2023-11-24 22:04:00,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-11-24 22:04:00,999 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-24 22:04:00,999 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 108 flow [2023-11-24 22:04:01,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 22:04:01,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:01,000 INFO L208 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] [2023-11-24 22:04:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:04:01,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-24 22:04:01,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1543299157, now seen corresponding path program 2 times [2023-11-24 22:04:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789244692] [2023-11-24 22:04:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:01,232 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 22:04:01,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789244692] [2023-11-24 22:04:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789244692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:01,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:01,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:04:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139141825] [2023-11-24 22:04:01,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:01,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:01,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-24 22:04:01,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 22:04:01,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:01,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-24 22:04:01,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:01,394 INFO L124 PetriNetUnfolderBase]: 57/183 cut-off events. [2023-11-24 22:04:01,395 INFO L125 PetriNetUnfolderBase]: For 58/59 co-relation queries the response was YES. [2023-11-24 22:04:01,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 183 events. 57/183 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 753 event pairs, 26 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 43. Up to 106 conditions per place. [2023-11-24 22:04:01,400 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 32 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-11-24 22:04:01,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 241 flow [2023-11-24 22:04:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:04:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 22:04:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2023-11-24 22:04:01,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2023-11-24 22:04:01,408 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2023-11-24 22:04:01,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2023-11-24 22:04:01,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:01,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2023-11-24 22:04:01,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:01,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 22:04:01,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 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 22:04:01,416 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 108 flow. Second operand 6 states and 134 transitions. [2023-11-24 22:04:01,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 241 flow [2023-11-24 22:04:01,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:04:01,420 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 161 flow [2023-11-24 22:04:01,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-11-24 22:04:01,422 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-24 22:04:01,422 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 161 flow [2023-11-24 22:04:01,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 22:04:01,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:01,423 INFO L208 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] [2023-11-24 22:04:01,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:04:01,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-11-24 22:04:01,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 552915645, now seen corresponding path program 3 times [2023-11-24 22:04:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:01,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325550454] [2023-11-24 22:04:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:01,564 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 22:04:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325550454] [2023-11-24 22:04:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325550454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:01,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:01,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:04:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388162879] [2023-11-24 22:04:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:01,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:01,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:04:01,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-24 22:04:01,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:01,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:01,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-24 22:04:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:01,651 INFO L124 PetriNetUnfolderBase]: 58/186 cut-off events. [2023-11-24 22:04:01,652 INFO L125 PetriNetUnfolderBase]: For 114/115 co-relation queries the response was YES. [2023-11-24 22:04:01,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 186 events. 58/186 cut-off events. For 114/115 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 774 event pairs, 43 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 152. Up to 146 conditions per place. [2023-11-24 22:04:01,653 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-11-24 22:04:01,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 221 flow [2023-11-24 22:04:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:04:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2023-11-24 22:04:01,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2023-11-24 22:04:01,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 81 transitions. [2023-11-24 22:04:01,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 81 transitions. [2023-11-24 22:04:01,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:01,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 81 transitions. [2023-11-24 22:04:01,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:01,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 22:04:01,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 22:04:01,658 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 161 flow. Second operand 4 states and 81 transitions. [2023-11-24 22:04:01,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 221 flow [2023-11-24 22:04:01,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:01,661 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-24 22:04:01,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-24 22:04:01,662 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-24 22:04:01,663 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-24 22:04:01,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:01,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-11-24 22:04:01,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-24 22:04:01,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-24 22:04:01,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-24 22:04:01,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-11-24 22:04:01,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-24 22:04:01,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:04:01,668 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-24 22:04:01,672 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:04:01,672 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:04:01,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:04:01 BasicIcfg [2023-11-24 22:04:01,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:04:01,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:04:01,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:04:01,679 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:04:01,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:59" (3/4) ... [2023-11-24 22:04:01,682 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:04:01,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-24 22:04:01,690 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-24 22:04:01,691 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 22:04:01,691 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 22:04:01,791 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:04:01,792 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:04:01,792 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:04:01,793 INFO L158 Benchmark]: Toolchain (without parser) took 3569.23ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 108.9MB in the beginning and 159.2MB in the end (delta: -50.4MB). Peak memory consumption was 108.1MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,793 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory was 64.1MB in the beginning and 64.0MB in the end (delta: 159.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:04:01,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.91ms. Allocated memory is still 140.5MB. Free memory was 108.4MB in the beginning and 89.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.50ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,795 INFO L158 Benchmark]: Boogie Preprocessor took 81.61ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 85.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,795 INFO L158 Benchmark]: RCFGBuilder took 630.98ms. Allocated memory is still 140.5MB. Free memory was 84.9MB in the beginning and 110.7MB in the end (delta: -25.8MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,796 INFO L158 Benchmark]: TraceAbstraction took 2130.22ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 110.0MB in the beginning and 56.0MB in the end (delta: 54.0MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,796 INFO L158 Benchmark]: Witness Printer took 113.41ms. Allocated memory is still 190.8MB. Free memory was 56.0MB in the beginning and 159.2MB in the end (delta: -103.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-11-24 22:04:01,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory was 64.1MB in the beginning and 64.0MB in the end (delta: 159.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.91ms. Allocated memory is still 140.5MB. Free memory was 108.4MB in the beginning and 89.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.50ms. Allocated memory is still 140.5MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.61ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 85.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 630.98ms. Allocated memory is still 140.5MB. Free memory was 84.9MB in the beginning and 110.7MB in the end (delta: -25.8MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2130.22ms. Allocated memory was 140.5MB in the beginning and 190.8MB in the end (delta: 50.3MB). Free memory was 110.0MB in the beginning and 56.0MB in the end (delta: 54.0MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. * Witness Printer took 113.41ms. Allocated memory is still 190.8MB. Free memory was 56.0MB in the beginning and 159.2MB in the end (delta: -103.2MB). Peak memory consumption was 5.8MB. 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: -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: 691]: 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, 48 locations, 6 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 250 IncrementalHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 7 mSDtfsCounter, 250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 0.8s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:04:01,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95efd723-552d-47b8-9482-25c2d65dd0fd/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