./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/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_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:04:00,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:04:00,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:04:00,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:04:00,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:04:00,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:04:00,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:04:00,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:04:00,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:04:00,245 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:04:00,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:04:00,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:04:00,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:04:00,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:04:00,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:04:00,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:04:00,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:04:00,252 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:04:00,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:04:00,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:04:00,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:04:00,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:04:00,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:04:00,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:04:00,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:04:00,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:04:00,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:04:00,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:04:00,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:04:00,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:04:00,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:04:00,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:00,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:04:00,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:04:00,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:04:00,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:04:00,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:04:00,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:04:00,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:04:00,263 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:04:00,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:04:00,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:04:00,264 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_08c3b437-f540-45c5-861d-a560af186894/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770 [2023-11-24 22:04:00,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:04:00,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:04:00,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:04:00,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:04:00,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:04:00,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2023-11-24 22:04:03,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:04:04,201 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:04:04,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2023-11-24 22:04:04,231 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/data/a0c9b5bee/d56718e6b4f04d75ab6ae6edc6c613e7/FLAG5a7e1edef [2023-11-24 22:04:04,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/data/a0c9b5bee/d56718e6b4f04d75ab6ae6edc6c613e7 [2023-11-24 22:04:04,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:04:04,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:04:04,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:04,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:04:04,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:04:04,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c203695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04, skipping insertion in model container [2023-11-24 22:04:04,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:04:04,658 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260] [2023-11-24 22:04:04,665 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465] [2023-11-24 22:04:04,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:04,689 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:04:04,729 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260] [2023-11-24 22:04:04,731 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465] [2023-11-24 22:04:04,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:04,782 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:04:04,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04 WrapperNode [2023-11-24 22:04:04,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:04,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:04,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:04:04,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:04:04,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,831 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-11-24 22:04:04,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:04,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:04:04,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:04:04,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:04:04,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,864 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 5, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2023-11-24 22:04:04,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:04:04,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:04:04,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:04:04,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:04:04,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:04,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:04:04,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:04:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2023-11-24 22:04:04,971 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2023-11-24 22:04:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:04:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:04:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:04:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 22:04:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 22:04:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2023-11-24 22:04:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2023-11-24 22:04:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:04:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:04:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:04:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:04:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:04:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:04:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:04:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:04:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:04:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:04:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:04:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:04:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:04:04,982 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 22:04:05,229 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:04:05,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:04:05,488 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:04:05,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:04:05,764 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:04:05,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:05 BoogieIcfgContainer [2023-11-24 22:04:05,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:04:05,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:04:05,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:04:05,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:04:05,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:04:04" (1/3) ... [2023-11-24 22:04:05,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45448215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:05, skipping insertion in model container [2023-11-24 22:04:05,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04" (2/3) ... [2023-11-24 22:04:05,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45448215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:05, skipping insertion in model container [2023-11-24 22:04:05,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:05" (3/3) ... [2023-11-24 22:04:05,775 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2023-11-24 22:04:05,786 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:04:05,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:04:05,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 22:04:05,800 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:04:05,847 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:04:05,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2023-11-24 22:04:05,934 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-11-24 22:04:05,934 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:04:05,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 32. Up to 3 conditions per place. [2023-11-24 22:04:05,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2023-11-24 22:04:05,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 77 flow [2023-11-24 22:04:05,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:04:05,967 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1ca5947, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:04:05,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 22:04:05,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:04:05,990 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-11-24 22:04:05,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:04:05,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:05,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:05,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 22:04:05,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 273710808, now seen corresponding path program 1 times [2023-11-24 22:04:06,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:06,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591196829] [2023-11-24 22:04:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:06,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:06,342 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 22:04:06,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:06,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591196829] [2023-11-24 22:04:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591196829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:06,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:06,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:04:06,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787439765] [2023-11-24 22:04:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:06,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2023-11-24 22:04:06,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 22:04:06,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:06,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2023-11-24 22:04:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:06,752 INFO L124 PetriNetUnfolderBase]: 135/319 cut-off events. [2023-11-24 22:04:06,752 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 22:04:06,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 319 events. 135/319 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1488 event pairs, 79 based on Foata normal form. 28/318 useless extension candidates. Maximal degree in co-relation 548. Up to 152 conditions per place. [2023-11-24 22:04:06,770 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 24 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-24 22:04:06,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 140 flow [2023-11-24 22:04:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 22:04:06,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2023-11-24 22:04:06,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 22:04:06,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 22:04:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:06,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 22:04:06,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:06,804 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 22:04:06,805 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 22:04:06,807 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 77 flow. Second operand 3 states and 72 transitions. [2023-11-24 22:04:06,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 140 flow [2023-11-24 22:04:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:04:06,817 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 70 flow [2023-11-24 22:04:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=70, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-24 22:04:06,825 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-24 22:04:06,826 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 70 flow [2023-11-24 22:04:06,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 22:04:06,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:06,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:06,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:04:06,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 22:04:06,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1186042116, now seen corresponding path program 1 times [2023-11-24 22:04:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210835816] [2023-11-24 22:04:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:06,980 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 22:04:06,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:06,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210835816] [2023-11-24 22:04:06,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210835816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:06,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:04:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682846684] [2023-11-24 22:04:06,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:06,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:06,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:06,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2023-11-24 22:04:06,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:04:06,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:06,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2023-11-24 22:04:06,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:07,140 INFO L124 PetriNetUnfolderBase]: 235/484 cut-off events. [2023-11-24 22:04:07,141 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 22:04:07,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 484 events. 235/484 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2252 event pairs, 113 based on Foata normal form. 8/469 useless extension candidates. Maximal degree in co-relation 730. Up to 273 conditions per place. [2023-11-24 22:04:07,145 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 4 changer transitions 4/43 dead transitions. [2023-11-24 22:04:07,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 165 flow [2023-11-24 22:04:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 22:04:07,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2023-11-24 22:04:07,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 22:04:07,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 22:04:07,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:07,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 22:04:07,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:07,151 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 22:04:07,152 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 22:04:07,152 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 70 flow. Second operand 3 states and 72 transitions. [2023-11-24 22:04:07,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 165 flow [2023-11-24 22:04:07,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:07,156 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 94 flow [2023-11-24 22:04:07,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-24 22:04:07,157 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-11-24 22:04:07,157 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 94 flow [2023-11-24 22:04:07,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:04:07,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:07,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:04:07,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 22:04:07,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash -977994541, now seen corresponding path program 1 times [2023-11-24 22:04:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:07,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551032457] [2023-11-24 22:04:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:07,233 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 22:04:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551032457] [2023-11-24 22:04:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551032457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:04:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162404710] [2023-11-24 22:04:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:07,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2023-11-24 22:04:07,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 22:04:07,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:07,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2023-11-24 22:04:07,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:07,371 INFO L124 PetriNetUnfolderBase]: 225/451 cut-off events. [2023-11-24 22:04:07,371 INFO L125 PetriNetUnfolderBase]: For 95/99 co-relation queries the response was YES. [2023-11-24 22:04:07,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 451 events. 225/451 cut-off events. For 95/99 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2042 event pairs, 117 based on Foata normal form. 24/462 useless extension candidates. Maximal degree in co-relation 767. Up to 282 conditions per place. [2023-11-24 22:04:07,375 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 25 selfloop transitions, 2 changer transitions 6/42 dead transitions. [2023-11-24 22:04:07,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 177 flow [2023-11-24 22:04:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-24 22:04:07,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-24 22:04:07,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-24 22:04:07,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-24 22:04:07,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:07,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-24 22:04:07,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:07,381 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 22:04:07,382 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 22:04:07,382 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 94 flow. Second operand 3 states and 71 transitions. [2023-11-24 22:04:07,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 177 flow [2023-11-24 22:04:07,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:07,386 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 90 flow [2023-11-24 22:04:07,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-24 22:04:07,388 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-24 22:04:07,388 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 90 flow [2023-11-24 22:04:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 22:04:07,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:07,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:07,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:04:07,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 22:04:07,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1953677256, now seen corresponding path program 1 times [2023-11-24 22:04:07,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:07,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615889668] [2023-11-24 22:04:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:07,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:07,699 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 22:04:07,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615889668] [2023-11-24 22:04:07,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615889668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:07,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:04:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940301841] [2023-11-24 22:04:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:07,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:07,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-24 22:04:07,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:04:07,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:07,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-24 22:04:07,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:07,876 INFO L124 PetriNetUnfolderBase]: 149/362 cut-off events. [2023-11-24 22:04:07,876 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-24 22:04:07,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 362 events. 149/362 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1694 event pairs, 79 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 521. Up to 189 conditions per place. [2023-11-24 22:04:07,879 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 18 selfloop transitions, 5 changer transitions 8/44 dead transitions. [2023-11-24 22:04:07,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 184 flow [2023-11-24 22:04:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-24 22:04:07,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2023-11-24 22:04:07,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-24 22:04:07,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-24 22:04:07,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:07,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-24 22:04:07,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 22:04:07,891 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 22:04:07,891 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 22:04:07,892 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 90 flow. Second operand 3 states and 80 transitions. [2023-11-24 22:04:07,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 184 flow [2023-11-24 22:04:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:04:07,898 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 98 flow [2023-11-24 22:04:07,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-11-24 22:04:07,901 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-11-24 22:04:07,901 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 98 flow [2023-11-24 22:04:07,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:04:07,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:07,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:07,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:04:07,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 22:04:07,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1779552158, now seen corresponding path program 2 times [2023-11-24 22:04:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136080194] [2023-11-24 22:04:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,034 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 22:04:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136080194] [2023-11-24 22:04:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136080194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:08,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:04:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493380462] [2023-11-24 22:04:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:08,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-24 22:04:08,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:04:08,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:08,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-24 22:04:08,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:08,129 INFO L124 PetriNetUnfolderBase]: 59/160 cut-off events. [2023-11-24 22:04:08,129 INFO L125 PetriNetUnfolderBase]: For 67/69 co-relation queries the response was YES. [2023-11-24 22:04:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 160 events. 59/160 cut-off events. For 67/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 602 event pairs, 28 based on Foata normal form. 12/164 useless extension candidates. Maximal degree in co-relation 304. Up to 65 conditions per place. [2023-11-24 22:04:08,131 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-24 22:04:08,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 146 flow [2023-11-24 22:04:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-24 22:04:08,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-24 22:04:08,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-24 22:04:08,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-24 22:04:08,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:08,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-24 22:04:08,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:08,137 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 22:04:08,137 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 22:04:08,137 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 98 flow. Second operand 3 states and 73 transitions. [2023-11-24 22:04:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 146 flow [2023-11-24 22:04:08,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 139 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:08,141 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-24 22:04:08,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-24 22:04:08,144 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-24 22:04:08,144 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-24 22:04:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:04:08,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-24 22:04:08,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-24 22:04:08,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-24 22:04:08,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-24 22:04:08,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-24 22:04:08,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-24 22:04:08,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:04:08,150 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-24 22:04:08,162 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:04:08,162 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:04:08,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:04:08 BasicIcfg [2023-11-24 22:04:08,176 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:04:08,177 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:04:08,177 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:04:08,178 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:04:08,178 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:05" (3/4) ... [2023-11-24 22:04:08,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:04:08,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure allocator [2023-11-24 22:04:08,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure de_allocator [2023-11-24 22:04:08,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 53 nodes and edges [2023-11-24 22:04:08,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-24 22:04:08,194 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 22:04:08,194 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:04:08,289 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:04:08,290 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:04:08,290 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:04:08,291 INFO L158 Benchmark]: Toolchain (without parser) took 4039.77ms. Allocated memory was 165.7MB in the beginning and 218.1MB in the end (delta: 52.4MB). Free memory was 119.7MB in the beginning and 124.9MB in the end (delta: -5.2MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,291 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:04:08,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.24ms. Allocated memory is still 165.7MB. Free memory was 119.7MB in the beginning and 99.4MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.56ms. Allocated memory is still 165.7MB. Free memory was 99.4MB in the beginning and 97.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,293 INFO L158 Benchmark]: Boogie Preprocessor took 51.31ms. Allocated memory is still 165.7MB. Free memory was 97.3MB in the beginning and 94.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,293 INFO L158 Benchmark]: RCFGBuilder took 881.53ms. Allocated memory is still 165.7MB. Free memory was 94.9MB in the beginning and 110.5MB in the end (delta: -15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,294 INFO L158 Benchmark]: TraceAbstraction took 2408.22ms. Allocated memory was 165.7MB in the beginning and 218.1MB in the end (delta: 52.4MB). Free memory was 109.9MB in the beginning and 129.1MB in the end (delta: -19.1MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,294 INFO L158 Benchmark]: Witness Printer took 112.76ms. Allocated memory is still 218.1MB. Free memory was 129.1MB in the beginning and 124.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:04:08,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.24ms. Allocated memory is still 165.7MB. Free memory was 119.7MB in the beginning and 99.4MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.56ms. Allocated memory is still 165.7MB. Free memory was 99.4MB in the beginning and 97.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.31ms. Allocated memory is still 165.7MB. Free memory was 97.3MB in the beginning and 94.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 881.53ms. Allocated memory is still 165.7MB. Free memory was 94.9MB in the beginning and 110.5MB in the end (delta: -15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2408.22ms. Allocated memory was 165.7MB in the beginning and 218.1MB in the end (delta: 52.4MB). Free memory was 109.9MB in the beginning and 129.1MB in the end (delta: -19.1MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Witness Printer took 112.76ms. Allocated memory is still 218.1MB. Free memory was 129.1MB in the beginning and 124.9MB 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: 702]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 710]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 62 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: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 5 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=4, InterpolantAutomatonStates: 15, 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, 0.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:04:08,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c3b437-f540-45c5-861d-a560af186894/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