./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/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_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/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_04e98585-9b15-47ef-bbfa-153a11d33ec6/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 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:27,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:27,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:02:28,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:28,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:28,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:28,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:28,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:28,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:28,059 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:28,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:28,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:28,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:28,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:28,065 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:28,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:28,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:02:28,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:28,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:02:28,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:28,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:28,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:02:28,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:28,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:02:28,070 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:28,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:02:28,071 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:28,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:28,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:28,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:28,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:28,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:28,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:28,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:28,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:02:28,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:02:28,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:02:28,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:28,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:28,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:02:28,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:28,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:28,080 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_04e98585-9b15-47ef-bbfa-153a11d33ec6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 [2023-11-24 22:02:28,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:28,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:28,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:28,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:28,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:28,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2023-11-24 22:02:31,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:31,948 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:31,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i [2023-11-24 22:02:31,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/data/99b897285/a25af71f75c944549f2238645b43d6da/FLAGd74bf7094 [2023-11-24 22:02:31,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/data/99b897285/a25af71f75c944549f2238645b43d6da [2023-11-24 22:02:31,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:32,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:32,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:32,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:32,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:32,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:31" (1/1) ... [2023-11-24 22:02:32,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296b8431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32, skipping insertion in model container [2023-11-24 22:02:32,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:31" (1/1) ... [2023-11-24 22:02:32,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:32,479 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_04e98585-9b15-47ef-bbfa-153a11d33ec6/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2023-11-24 22:02:32,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:32,515 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:32,574 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_04e98585-9b15-47ef-bbfa-153a11d33ec6/sv-benchmarks/c/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2023-11-24 22:02:32,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:32,620 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:32,620 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:32,628 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:32,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32 WrapperNode [2023-11-24 22:02:32,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:32,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:32,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:32,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:32,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,683 INFO L138 Inliner]: procedures = 166, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-11-24 22:02:32,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:32,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:32,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:32,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:32,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,730 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 2, 11, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 0, 11, 0, 0]. The 4 writes are split as follows [0, 1, 1, 0, 1, 1]. [2023-11-24 22:02:32,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:32,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:32,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:32,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:32,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (1/1) ... [2023-11-24 22:02:32,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:32,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:32,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:32,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2023-11-24 22:02:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:02:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:02:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:02:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 22:02:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 22:02:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 22:02:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:02:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:02:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:02:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:02:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:02:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 22:02:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2023-11-24 22:02:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:02:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-24 22:02:32,879 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-24 22:02:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:02:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2023-11-24 22:02:32,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:02:32,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:02:32,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:02:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:02:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:02:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:02:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 22:02:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:02:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-24 22:02:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-24 22:02:32,887 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 22:02:33,103 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:33,107 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:33,363 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:33,643 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:33,643 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:02:33,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:33 BoogieIcfgContainer [2023-11-24 22:02:33,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:33,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:33,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:33,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:33,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:31" (1/3) ... [2023-11-24 22:02:33,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb5d09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:33, skipping insertion in model container [2023-11-24 22:02:33,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:32" (2/3) ... [2023-11-24 22:02:33,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb5d09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:33, skipping insertion in model container [2023-11-24 22:02:33,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:33" (3/3) ... [2023-11-24 22:02:33,654 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2023-11-24 22:02:33,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:02:33,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:33,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:02:33,675 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:02:33,746 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 22:02:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 57 transitions, 142 flow [2023-11-24 22:02:33,844 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2023-11-24 22:02:33,844 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 22:02:33,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 2/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-24 22:02:33,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 57 transitions, 142 flow [2023-11-24 22:02:33,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 123 flow [2023-11-24 22:02:33,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:33,879 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;@741c5f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:33,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-24 22:02:33,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:02:33,915 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-11-24 22:02:33,915 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 22:02:33,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:33,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:33,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:33,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1100067354, now seen corresponding path program 1 times [2023-11-24 22:02:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:33,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479032953] [2023-11-24 22:02:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:34,422 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 22:02:34,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479032953] [2023-11-24 22:02:34,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479032953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:34,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:34,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:02:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702932433] [2023-11-24 22:02:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:34,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:34,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2023-11-24 22:02:34,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 22:02:34,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2023-11-24 22:02:34,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:40,136 INFO L124 PetriNetUnfolderBase]: 25855/39046 cut-off events. [2023-11-24 22:02:40,136 INFO L125 PetriNetUnfolderBase]: For 2803/2803 co-relation queries the response was YES. [2023-11-24 22:02:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76636 conditions, 39046 events. 25855/39046 cut-off events. For 2803/2803 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 284806 event pairs, 3169 based on Foata normal form. 2094/39691 useless extension candidates. Maximal degree in co-relation 63845. Up to 11319 conditions per place. [2023-11-24 22:02:40,575 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 187 selfloop transitions, 29 changer transitions 8/235 dead transitions. [2023-11-24 22:02:40,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 235 transitions, 1020 flow [2023-11-24 22:02:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:02:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 22:02:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 403 transitions. [2023-11-24 22:02:40,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6427432216905901 [2023-11-24 22:02:40,597 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 403 transitions. [2023-11-24 22:02:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 403 transitions. [2023-11-24 22:02:40,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:40,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 403 transitions. [2023-11-24 22:02:40,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 36.63636363636363) internal successors, (403), 11 states have internal predecessors, (403), 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 22:02:40,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 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 22:02:40,617 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 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 22:02:40,619 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 123 flow. Second operand 11 states and 403 transitions. [2023-11-24 22:02:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 235 transitions, 1020 flow [2023-11-24 22:02:40,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 235 transitions, 959 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-24 22:02:40,670 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 308 flow [2023-11-24 22:02:40,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=308, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-11-24 22:02:40,676 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-11-24 22:02:40,677 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 308 flow [2023-11-24 22:02:40,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 22:02:40,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:40,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:40,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:02:40,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:40,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:40,679 INFO L85 PathProgramCache]: Analyzing trace with hash -627422463, now seen corresponding path program 1 times [2023-11-24 22:02:40,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56149588] [2023-11-24 22:02:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:40,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:40,951 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 22:02:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56149588] [2023-11-24 22:02:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56149588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:40,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:40,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:02:40,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744157030] [2023-11-24 22:02:40,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:40,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:40,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2023-11-24 22:02:40,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:40,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:40,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2023-11-24 22:02:40,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:41,277 INFO L124 PetriNetUnfolderBase]: 799/2035 cut-off events. [2023-11-24 22:02:41,280 INFO L125 PetriNetUnfolderBase]: For 795/1221 co-relation queries the response was YES. [2023-11-24 22:02:41,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4728 conditions, 2035 events. 799/2035 cut-off events. For 795/1221 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15556 event pairs, 112 based on Foata normal form. 953/2899 useless extension candidates. Maximal degree in co-relation 4094. Up to 1071 conditions per place. [2023-11-24 22:02:41,293 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 44 selfloop transitions, 2 changer transitions 2/79 dead transitions. [2023-11-24 22:02:41,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 399 flow [2023-11-24 22:02:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2023-11-24 22:02:41,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6198830409356725 [2023-11-24 22:02:41,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2023-11-24 22:02:41,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2023-11-24 22:02:41,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:41,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2023-11-24 22:02:41,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 22:02:41,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:02:41,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:02:41,307 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 308 flow. Second operand 3 states and 106 transitions. [2023-11-24 22:02:41,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 399 flow [2023-11-24 22:02:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:02:41,344 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 291 flow [2023-11-24 22:02:41,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2023-11-24 22:02:41,345 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2023-11-24 22:02:41,345 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 291 flow [2023-11-24 22:02:41,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:41,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:41,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:02:41,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:41,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1356740063, now seen corresponding path program 2 times [2023-11-24 22:02:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838455561] [2023-11-24 22:02:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:41,493 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 22:02:41,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838455561] [2023-11-24 22:02:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838455561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:41,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:02:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455095473] [2023-11-24 22:02:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:41,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2023-11-24 22:02:41,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:41,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:41,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2023-11-24 22:02:41,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:41,603 INFO L124 PetriNetUnfolderBase]: 116/374 cut-off events. [2023-11-24 22:02:41,603 INFO L125 PetriNetUnfolderBase]: For 236/243 co-relation queries the response was YES. [2023-11-24 22:02:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 374 events. 116/374 cut-off events. For 236/243 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1960 event pairs, 9 based on Foata normal form. 52/407 useless extension candidates. Maximal degree in co-relation 806. Up to 177 conditions per place. [2023-11-24 22:02:41,607 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 20 selfloop transitions, 2 changer transitions 6/55 dead transitions. [2023-11-24 22:02:41,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 257 flow [2023-11-24 22:02:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2023-11-24 22:02:41,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730994152046783 [2023-11-24 22:02:41,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2023-11-24 22:02:41,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2023-11-24 22:02:41,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:41,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2023-11-24 22:02:41,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 22:02:41,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:02:41,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:02:41,612 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 291 flow. Second operand 3 states and 98 transitions. [2023-11-24 22:02:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 257 flow [2023-11-24 22:02:41,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 22:02:41,619 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 162 flow [2023-11-24 22:02:41,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-11-24 22:02:41,621 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-11-24 22:02:41,621 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 162 flow [2023-11-24 22:02:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:41,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:41,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:02:41,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:41,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2132620070, now seen corresponding path program 1 times [2023-11-24 22:02:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:41,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303601286] [2023-11-24 22:02:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:41,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:41,739 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 22:02:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303601286] [2023-11-24 22:02:41,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303601286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:41,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:41,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:02:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519281952] [2023-11-24 22:02:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:41,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2023-11-24 22:02:41,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 22:02:41,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:41,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2023-11-24 22:02:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:41,981 INFO L124 PetriNetUnfolderBase]: 105/309 cut-off events. [2023-11-24 22:02:41,982 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-24 22:02:41,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 309 events. 105/309 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1383 event pairs, 22 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 772. Up to 57 conditions per place. [2023-11-24 22:02:41,984 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 37 selfloop transitions, 9 changer transitions 11/72 dead transitions. [2023-11-24 22:02:41,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 367 flow [2023-11-24 22:02:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:02:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:02:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2023-11-24 22:02:41,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3543859649122807 [2023-11-24 22:02:41,986 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 202 transitions. [2023-11-24 22:02:41,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 202 transitions. [2023-11-24 22:02:41,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:41,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 202 transitions. [2023-11-24 22:02:41,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.2) internal successors, (202), 10 states have internal predecessors, (202), 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 22:02:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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 22:02:41,990 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 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 22:02:41,990 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 162 flow. Second operand 10 states and 202 transitions. [2023-11-24 22:02:41,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 367 flow [2023-11-24 22:02:41,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 351 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:41,995 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 196 flow [2023-11-24 22:02:41,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2023-11-24 22:02:41,996 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2023-11-24 22:02:41,996 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 196 flow [2023-11-24 22:02:41,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 22:02:41,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:41,997 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] [2023-11-24 22:02:41,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:02:41,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:41,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:41,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1707589020, now seen corresponding path program 1 times [2023-11-24 22:02:41,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:41,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777730699] [2023-11-24 22:02:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:41,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:42,130 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 22:02:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777730699] [2023-11-24 22:02:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777730699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:02:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136848158] [2023-11-24 22:02:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:42,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:42,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:42,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:42,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2023-11-24 22:02:42,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 22:02:42,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:42,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2023-11-24 22:02:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:42,359 INFO L124 PetriNetUnfolderBase]: 105/269 cut-off events. [2023-11-24 22:02:42,359 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-24 22:02:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 269 events. 105/269 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1069 event pairs, 22 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 761. Up to 64 conditions per place. [2023-11-24 22:02:42,362 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 23 selfloop transitions, 4 changer transitions 27/67 dead transitions. [2023-11-24 22:02:42,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 371 flow [2023-11-24 22:02:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:02:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:02:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2023-11-24 22:02:42,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36257309941520466 [2023-11-24 22:02:42,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 186 transitions. [2023-11-24 22:02:42,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 186 transitions. [2023-11-24 22:02:42,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:42,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 186 transitions. [2023-11-24 22:02:42,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.666666666666668) internal successors, (186), 9 states have internal predecessors, (186), 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 22:02:42,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 22:02:42,367 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 22:02:42,368 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 196 flow. Second operand 9 states and 186 transitions. [2023-11-24 22:02:42,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 371 flow [2023-11-24 22:02:42,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 361 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:42,372 INFO L231 Difference]: Finished difference. Result has 67 places, 35 transitions, 147 flow [2023-11-24 22:02:42,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=35} [2023-11-24 22:02:42,374 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-11-24 22:02:42,374 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 35 transitions, 147 flow [2023-11-24 22:02:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 22:02:42,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:42,375 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] [2023-11-24 22:02:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:02:42,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:02:42,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1036078208, now seen corresponding path program 1 times [2023-11-24 22:02:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:42,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763301346] [2023-11-24 22:02:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:42,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:42,469 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 22:02:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763301346] [2023-11-24 22:02:42,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763301346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:42,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:02:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258119425] [2023-11-24 22:02:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:42,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2023-11-24 22:02:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 35 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 22:02:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2023-11-24 22:02:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:42,665 INFO L124 PetriNetUnfolderBase]: 78/183 cut-off events. [2023-11-24 22:02:42,666 INFO L125 PetriNetUnfolderBase]: For 123/127 co-relation queries the response was YES. [2023-11-24 22:02:42,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 183 events. 78/183 cut-off events. For 123/127 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 565 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 505. Up to 57 conditions per place. [2023-11-24 22:02:42,667 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-11-24 22:02:42,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 297 flow [2023-11-24 22:02:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:02:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:02:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2023-11-24 22:02:42,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3508771929824561 [2023-11-24 22:02:42,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 180 transitions. [2023-11-24 22:02:42,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 180 transitions. [2023-11-24 22:02:42,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:42,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 180 transitions. [2023-11-24 22:02:42,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 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 22:02:42,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 22:02:42,673 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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 22:02:42,673 INFO L175 Difference]: Start difference. First operand has 67 places, 35 transitions, 147 flow. Second operand 9 states and 180 transitions. [2023-11-24 22:02:42,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 297 flow [2023-11-24 22:02:42,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 265 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-24 22:02:42,676 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-24 22:02:42,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-24 22:02:42,677 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-24 22:02:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-24 22:02:42,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 22:02:42,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-24 22:02:42,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-24 22:02:42,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-24 22:02:42,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-24 22:02:42,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-24 22:02:42,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-24 22:02:42,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-24 22:02:42,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:02:42,683 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-24 22:02:42,689 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:02:42,689 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:02:42,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:02:42 BasicIcfg [2023-11-24 22:02:42,699 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:02:42,700 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:02:42,700 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:02:42,700 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:02:42,701 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:33" (3/4) ... [2023-11-24 22:02:42,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:02:42,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-11-24 22:02:42,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-11-24 22:02:42,715 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 60 nodes and edges [2023-11-24 22:02:42,715 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-24 22:02:42,715 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 22:02:42,716 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 22:02:42,822 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:02:42,823 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:02:42,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:02:42,824 INFO L158 Benchmark]: Toolchain (without parser) took 10822.90ms. Allocated memory was 132.1MB in the beginning and 591.4MB in the end (delta: 459.3MB). Free memory was 84.2MB in the beginning and 321.1MB in the end (delta: -236.9MB). Peak memory consumption was 223.7MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,824 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 104.7MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:02:42,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.23ms. Allocated memory is still 132.1MB. Free memory was 84.2MB in the beginning and 63.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.02ms. Allocated memory is still 132.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,826 INFO L158 Benchmark]: Boogie Preprocessor took 87.84ms. Allocated memory is still 132.1MB. Free memory was 61.7MB in the beginning and 59.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,826 INFO L158 Benchmark]: RCFGBuilder took 870.81ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 59.1MB in the beginning and 112.9MB in the end (delta: -53.8MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,827 INFO L158 Benchmark]: TraceAbstraction took 9052.59ms. Allocated memory was 165.7MB in the beginning and 591.4MB in the end (delta: 425.7MB). Free memory was 112.9MB in the beginning and 325.4MB in the end (delta: -212.5MB). Peak memory consumption was 213.9MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,827 INFO L158 Benchmark]: Witness Printer took 123.44ms. Allocated memory is still 591.4MB. Free memory was 325.4MB in the beginning and 321.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:02:42,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 104.7MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.23ms. Allocated memory is still 132.1MB. Free memory was 84.2MB in the beginning and 63.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.02ms. Allocated memory is still 132.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.84ms. Allocated memory is still 132.1MB. Free memory was 61.7MB in the beginning and 59.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 870.81ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 59.1MB in the beginning and 112.9MB in the end (delta: -53.8MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9052.59ms. Allocated memory was 165.7MB in the beginning and 591.4MB in the end (delta: 425.7MB). Free memory was 112.9MB in the beginning and 325.4MB in the end (delta: -212.5MB). Peak memory consumption was 213.9MB. Max. memory is 16.1GB. * Witness Printer took 123.44ms. Allocated memory is still 591.4MB. Free memory was 325.4MB in the beginning and 321.1MB 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: 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 7 procedures, 79 locations, 7 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: 8.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 408 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1054 IncrementalHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 19 mSDtfsCounter, 1054 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=1, InterpolantAutomatonStates: 45, 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, 0.9s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:02:42,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e98585-9b15-47ef-bbfa-153a11d33ec6/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