./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/race-4_1-thread_local_vars.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/race-4_1-thread_local_vars.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:43:28,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:43:28,946 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:43:28,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:43:28,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:43:28,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:43:28,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:43:28,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:43:28,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:43:28,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:43:28,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:43:28,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:43:28,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:43:28,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:43:28,991 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:43:28,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:43:28,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:43:28,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:43:28,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:43:28,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:43:28,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:43:28,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:43:28,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:43:28,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:43:28,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:43:28,994 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:43:28,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:43:28,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:43:28,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:43:28,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:43:28,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:43:28,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:43:28,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:43:28,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:43:28,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:43:28,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:43:28,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:43:28,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:43:28,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:43:28,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:43:28,999 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:43:28,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:43:28,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:43:28,999 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:43:29,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:43:29,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:43:29,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:43:29,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:43:29,309 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:43:29,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2024-06-28 02:43:30,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:43:30,873 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:43:30,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2024-06-28 02:43:30,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0cd9011/10d673d97d834e579584a1da5d54d0b8/FLAGd8145c996 [2024-06-28 02:43:30,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d0cd9011/10d673d97d834e579584a1da5d54d0b8 [2024-06-28 02:43:30,922 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:43:30,922 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:43:30,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/race-4_1-thread_local_vars.yml/witness.yml [2024-06-28 02:43:31,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:43:31,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:43:31,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:43:31,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:43:31,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:43:31,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:43:30" (1/2) ... [2024-06-28 02:43:31,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b4a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:43:31, skipping insertion in model container [2024-06-28 02:43:31,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:43:30" (1/2) ... [2024-06-28 02:43:31,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e9c5226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:43:31, skipping insertion in model container [2024-06-28 02:43:31,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:31" (2/2) ... [2024-06-28 02:43:31,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b4a42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:31, skipping insertion in model container [2024-06-28 02:43:31,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:31" (2/2) ... [2024-06-28 02:43:31,034 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:43:31,084 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:43:31,085 INFO L97 edCorrectnessWitness]: Location invariant before [L1781-L1781] (! multithreaded || (ldv_usb_state == 0 || ldv_usb_state == 1)) && (! multithreaded || ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9)) [2024-06-28 02:43:31,086 INFO L97 edCorrectnessWitness]: Location invariant before [L1719-L1719] (! multithreaded || (ldv_usb_state == 0 || ldv_usb_state == 1)) && (! multithreaded || ((((pdev == 1 || pdev == 5) || pdev == 6) || pdev == 8) || pdev == 9)) [2024-06-28 02:43:31,086 INFO L103 edCorrectnessWitness]: ghost_variable mutex_locked = 0 [2024-06-28 02:43:31,086 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:43:31,086 INFO L106 edCorrectnessWitness]: ghost_update [L1780-L1780] multithreaded = 1; [2024-06-28 02:43:31,086 INFO L106 edCorrectnessWitness]: ghost_update [L1698-L1698] mutex_locked = 1; [2024-06-28 02:43:31,086 INFO L106 edCorrectnessWitness]: ghost_update [L1701-L1701] mutex_locked = 0; [2024-06-28 02:43:31,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:43:31,849 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:43:31,859 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:43:31,977 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:43:32,079 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:43:32,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32 WrapperNode [2024-06-28 02:43:32,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:43:32,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:43:32,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:43:32,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:43:32,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,160 INFO L138 Inliner]: procedures = 487, calls = 37, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 223 [2024-06-28 02:43:32,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:43:32,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:43:32,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:43:32,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:43:32,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,197 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [1, 2, 5, 1]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [0, 2, 5, 0]. The 2 writes are split as follows [1, 0, 0, 1]. [2024-06-28 02:43:32,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:43:32,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:43:32,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:43:32,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:43:32,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (1/1) ... [2024-06-28 02:43:32,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:43:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:43:32,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:43:32,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:43:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2024-06-28 02:43:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2024-06-28 02:43:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-06-28 02:43:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2024-06-28 02:43:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2024-06-28 02:43:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 02:43:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:43:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-06-28 02:43:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-06-28 02:43:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-06-28 02:43:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-06-28 02:43:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:43:32,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:43:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-06-28 02:43:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 02:43:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:43:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:43:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 02:43:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-28 02:43:32,321 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:43:32,656 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:43:32,657 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:43:32,876 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:43:32,876 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:43:33,036 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:43:33,037 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-28 02:43:33,039 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:43:33 BoogieIcfgContainer [2024-06-28 02:43:33,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:43:33,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:43:33,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:43:33,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:43:33,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:43:30" (1/4) ... [2024-06-28 02:43:33,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76087041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:43:33, skipping insertion in model container [2024-06-28 02:43:33,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:43:31" (2/4) ... [2024-06-28 02:43:33,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76087041 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:43:33, skipping insertion in model container [2024-06-28 02:43:33,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:43:32" (3/4) ... [2024-06-28 02:43:33,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76087041 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:43:33, skipping insertion in model container [2024-06-28 02:43:33,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:43:33" (4/4) ... [2024-06-28 02:43:33,049 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2024-06-28 02:43:33,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:43:33,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:43:33,063 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:43:33,118 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-06-28 02:43:33,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 87 transitions, 201 flow [2024-06-28 02:43:33,180 INFO L124 PetriNetUnfolderBase]: 20/85 cut-off events. [2024-06-28 02:43:33,180 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-28 02:43:33,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 85 events. 20/85 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 75. Up to 11 conditions per place. [2024-06-28 02:43:33,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 87 transitions, 201 flow [2024-06-28 02:43:33,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 56 transitions, 128 flow [2024-06-28 02:43:33,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:43:33,201 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4821dca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:43:33,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:43:33,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:43:33,206 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:43:33,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:43:33,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:33,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-28 02:43:33,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:33,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2015763253, now seen corresponding path program 1 times [2024-06-28 02:43:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:33,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039268415] [2024-06-28 02:43:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039268415] [2024-06-28 02:43:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039268415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:43:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000925697] [2024-06-28 02:43:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:33,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:43:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:33,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:43:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:43:33,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:33,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:33,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:33,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:33,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:34,258 INFO L124 PetriNetUnfolderBase]: 3216/5145 cut-off events. [2024-06-28 02:43:34,259 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 02:43:34,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 5145 events. 3216/5145 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29769 event pairs, 821 based on Foata normal form. 11/4275 useless extension candidates. Maximal degree in co-relation 9564. Up to 3891 conditions per place. [2024-06-28 02:43:34,283 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 62 selfloop transitions, 4 changer transitions 2/80 dead transitions. [2024-06-28 02:43:34,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 315 flow [2024-06-28 02:43:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:43:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:43:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-06-28 02:43:34,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2024-06-28 02:43:34,296 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 128 flow. Second operand 3 states and 140 transitions. [2024-06-28 02:43:34,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 315 flow [2024-06-28 02:43:34,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:34,302 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 149 flow [2024-06-28 02:43:34,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2024-06-28 02:43:34,306 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-06-28 02:43:34,306 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 149 flow [2024-06-28 02:43:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:34,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:34,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:34,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:43:34,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:34,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:34,308 INFO L85 PathProgramCache]: Analyzing trace with hash -390428916, now seen corresponding path program 1 times [2024-06-28 02:43:34,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:34,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317264578] [2024-06-28 02:43:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:34,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317264578] [2024-06-28 02:43:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317264578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:34,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:43:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656998322] [2024-06-28 02:43:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:34,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:34,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:34,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:34,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:35,169 INFO L124 PetriNetUnfolderBase]: 3873/6259 cut-off events. [2024-06-28 02:43:35,169 INFO L125 PetriNetUnfolderBase]: For 661/661 co-relation queries the response was YES. [2024-06-28 02:43:35,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12995 conditions, 6259 events. 3873/6259 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 34272 event pairs, 740 based on Foata normal form. 217/5731 useless extension candidates. Maximal degree in co-relation 2562. Up to 3852 conditions per place. [2024-06-28 02:43:35,201 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 83 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2024-06-28 02:43:35,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 432 flow [2024-06-28 02:43:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-06-28 02:43:35,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-06-28 02:43:35,204 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 149 flow. Second operand 4 states and 177 transitions. [2024-06-28 02:43:35,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 101 transitions, 432 flow [2024-06-28 02:43:35,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 101 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:35,208 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 178 flow [2024-06-28 02:43:35,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2024-06-28 02:43:35,209 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2024-06-28 02:43:35,209 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 178 flow [2024-06-28 02:43:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:35,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:35,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:35,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:43:35,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:35,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash -359831234, now seen corresponding path program 1 times [2024-06-28 02:43:35,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:35,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860036447] [2024-06-28 02:43:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:35,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:35,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860036447] [2024-06-28 02:43:35,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860036447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:35,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:35,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576869033] [2024-06-28 02:43:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:35,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 87 [2024-06-28 02:43:35,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:35,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:35,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 87 [2024-06-28 02:43:35,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:35,947 INFO L124 PetriNetUnfolderBase]: 4073/6556 cut-off events. [2024-06-28 02:43:35,948 INFO L125 PetriNetUnfolderBase]: For 2019/2019 co-relation queries the response was YES. [2024-06-28 02:43:35,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14472 conditions, 6556 events. 4073/6556 cut-off events. For 2019/2019 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 36239 event pairs, 1766 based on Foata normal form. 35/5782 useless extension candidates. Maximal degree in co-relation 3290. Up to 2756 conditions per place. [2024-06-28 02:43:35,987 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 68 selfloop transitions, 10 changer transitions 5/94 dead transitions. [2024-06-28 02:43:35,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 94 transitions, 434 flow [2024-06-28 02:43:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:35,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-28 02:43:35,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540229885057471 [2024-06-28 02:43:35,992 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 178 flow. Second operand 4 states and 158 transitions. [2024-06-28 02:43:35,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 94 transitions, 434 flow [2024-06-28 02:43:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 94 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:43:35,998 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 237 flow [2024-06-28 02:43:35,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2024-06-28 02:43:36,000 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-06-28 02:43:36,000 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 237 flow [2024-06-28 02:43:36,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:36,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:36,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:36,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:43:36,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:36,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash -407742758, now seen corresponding path program 1 times [2024-06-28 02:43:36,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448916723] [2024-06-28 02:43:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448916723] [2024-06-28 02:43:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448916723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:36,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295883683] [2024-06-28 02:43:36,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:36,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:36,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:36,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 87 [2024-06-28 02:43:36,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:36,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 87 [2024-06-28 02:43:36,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:37,010 INFO L124 PetriNetUnfolderBase]: 5021/8094 cut-off events. [2024-06-28 02:43:37,010 INFO L125 PetriNetUnfolderBase]: For 7117/7117 co-relation queries the response was YES. [2024-06-28 02:43:37,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19646 conditions, 8094 events. 5021/8094 cut-off events. For 7117/7117 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 44778 event pairs, 1600 based on Foata normal form. 153/7182 useless extension candidates. Maximal degree in co-relation 13733. Up to 2834 conditions per place. [2024-06-28 02:43:37,046 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 78 selfloop transitions, 12 changer transitions 1/102 dead transitions. [2024-06-28 02:43:37,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 533 flow [2024-06-28 02:43:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-06-28 02:43:37,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46839080459770116 [2024-06-28 02:43:37,049 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 237 flow. Second operand 4 states and 163 transitions. [2024-06-28 02:43:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 533 flow [2024-06-28 02:43:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 517 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:37,060 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 286 flow [2024-06-28 02:43:37,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-06-28 02:43:37,061 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-06-28 02:43:37,062 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 286 flow [2024-06-28 02:43:37,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:37,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:37,062 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] [2024-06-28 02:43:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:43:37,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:37,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1379482757, now seen corresponding path program 1 times [2024-06-28 02:43:37,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:37,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579923934] [2024-06-28 02:43:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579923934] [2024-06-28 02:43:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579923934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:37,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:37,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845958895] [2024-06-28 02:43:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:37,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:37,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:37,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:37,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:37,943 INFO L124 PetriNetUnfolderBase]: 4633/7773 cut-off events. [2024-06-28 02:43:37,944 INFO L125 PetriNetUnfolderBase]: For 11156/11156 co-relation queries the response was YES. [2024-06-28 02:43:37,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18739 conditions, 7773 events. 4633/7773 cut-off events. For 11156/11156 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 45363 event pairs, 1559 based on Foata normal form. 535/7390 useless extension candidates. Maximal degree in co-relation 14244. Up to 2877 conditions per place. [2024-06-28 02:43:37,986 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 83 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-06-28 02:43:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 573 flow [2024-06-28 02:43:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-06-28 02:43:37,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:43:37,988 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 286 flow. Second operand 4 states and 174 transitions. [2024-06-28 02:43:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 573 flow [2024-06-28 02:43:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 549 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:38,006 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 297 flow [2024-06-28 02:43:38,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-06-28 02:43:38,007 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2024-06-28 02:43:38,007 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 297 flow [2024-06-28 02:43:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:38,008 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] [2024-06-28 02:43:38,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:43:38,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:38,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1379506937, now seen corresponding path program 2 times [2024-06-28 02:43:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56848278] [2024-06-28 02:43:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:43:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56848278] [2024-06-28 02:43:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56848278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:38,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406812898] [2024-06-28 02:43:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:38,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:38,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:38,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:38,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:38,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:39,038 INFO L124 PetriNetUnfolderBase]: 5960/10039 cut-off events. [2024-06-28 02:43:39,038 INFO L125 PetriNetUnfolderBase]: For 11480/11480 co-relation queries the response was YES. [2024-06-28 02:43:39,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24007 conditions, 10039 events. 5960/10039 cut-off events. For 11480/11480 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 59359 event pairs, 2370 based on Foata normal form. 55/8859 useless extension candidates. Maximal degree in co-relation 16159. Up to 3862 conditions per place. [2024-06-28 02:43:39,098 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 88 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-06-28 02:43:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 645 flow [2024-06-28 02:43:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-06-28 02:43:39,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-06-28 02:43:39,100 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 297 flow. Second operand 4 states and 176 transitions. [2024-06-28 02:43:39,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 645 flow [2024-06-28 02:43:39,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 110 transitions, 633 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:43:39,141 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 379 flow [2024-06-28 02:43:39,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 02:43:39,143 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2024-06-28 02:43:39,144 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 379 flow [2024-06-28 02:43:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:39,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:39,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:43:39,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:39,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -434343699, now seen corresponding path program 1 times [2024-06-28 02:43:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007002137] [2024-06-28 02:43:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 02:43:39,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007002137] [2024-06-28 02:43:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007002137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:39,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:43:39,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838380350] [2024-06-28 02:43:39,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:39,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:43:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:43:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:43:39,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:39,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:39,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:39,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:39,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:40,516 INFO L124 PetriNetUnfolderBase]: 6000/9882 cut-off events. [2024-06-28 02:43:40,516 INFO L125 PetriNetUnfolderBase]: For 15778/15778 co-relation queries the response was YES. [2024-06-28 02:43:40,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25397 conditions, 9882 events. 6000/9882 cut-off events. For 15778/15778 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 54598 event pairs, 4212 based on Foata normal form. 93/8790 useless extension candidates. Maximal degree in co-relation 17219. Up to 8076 conditions per place. [2024-06-28 02:43:40,551 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 60 selfloop transitions, 8 changer transitions 8/87 dead transitions. [2024-06-28 02:43:40,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 576 flow [2024-06-28 02:43:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:43:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:43:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-06-28 02:43:40,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2024-06-28 02:43:40,553 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 379 flow. Second operand 3 states and 130 transitions. [2024-06-28 02:43:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 576 flow [2024-06-28 02:43:40,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:43:40,586 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 391 flow [2024-06-28 02:43:40,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-28 02:43:40,586 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-06-28 02:43:40,587 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 391 flow [2024-06-28 02:43:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:40,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:43:40,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:40,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:43:40,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:43:40,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:43:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2040766972, now seen corresponding path program 1 times [2024-06-28 02:43:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:43:40,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316847741] [2024-06-28 02:43:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:43:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:43:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:43:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 02:43:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:43:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316847741] [2024-06-28 02:43:40,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316847741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:43:40,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:43:40,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:43:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196862892] [2024-06-28 02:43:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:43:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:43:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:43:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:43:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:43:40,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-06-28 02:43:40,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:40,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:43:40,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-06-28 02:43:40,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:43:41,151 INFO L124 PetriNetUnfolderBase]: 2070/3602 cut-off events. [2024-06-28 02:43:41,154 INFO L125 PetriNetUnfolderBase]: For 6504/6504 co-relation queries the response was YES. [2024-06-28 02:43:41,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8984 conditions, 3602 events. 2070/3602 cut-off events. For 6504/6504 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 18286 event pairs, 1313 based on Foata normal form. 49/3341 useless extension candidates. Maximal degree in co-relation 6711. Up to 2366 conditions per place. [2024-06-28 02:43:41,164 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2024-06-28 02:43:41,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 638 flow [2024-06-28 02:43:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:43:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:43:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-28 02:43:41,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-06-28 02:43:41,166 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 391 flow. Second operand 4 states and 160 transitions. [2024-06-28 02:43:41,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 638 flow [2024-06-28 02:43:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 95 transitions, 591 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:43:41,176 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-28 02:43:41,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-28 02:43:41,179 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-06-28 02:43:41,179 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-28 02:43:41,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:43:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 02:43:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-06-28 02:43:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 02:43:41,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 02:43:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 6 remaining) [2024-06-28 02:43:41,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 02:43:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:43:41,186 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-06-28 02:43:41,191 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:43:41,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:43:41,198 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:43:41,198 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:43:41,199 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:43:41 BasicIcfg [2024-06-28 02:43:41,199 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:43:41,199 INFO L158 Benchmark]: Toolchain (without parser) took 10176.74ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 899.7MB). Free memory was 89.7MB in the beginning and 765.5MB in the end (delta: -675.8MB). Peak memory consumption was 404.3MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,200 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:43:41,200 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 153.1MB. Free memory was 92.9MB in the beginning and 92.6MB in the end (delta: 282.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1058.63ms. Allocated memory is still 153.1MB. Free memory was 89.7MB in the beginning and 75.4MB in the end (delta: 14.2MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.99ms. Allocated memory is still 153.1MB. Free memory was 75.4MB in the beginning and 71.5MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,202 INFO L158 Benchmark]: Boogie Preprocessor took 64.72ms. Allocated memory is still 153.1MB. Free memory was 71.5MB in the beginning and 67.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,203 INFO L158 Benchmark]: RCFGBuilder took 811.76ms. Allocated memory was 153.1MB in the beginning and 232.8MB in the end (delta: 79.7MB). Free memory was 67.3MB in the beginning and 167.1MB in the end (delta: -99.8MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,203 INFO L158 Benchmark]: TraceAbstraction took 8157.71ms. Allocated memory was 232.8MB in the beginning and 1.1GB in the end (delta: 820.0MB). Free memory was 167.1MB in the beginning and 765.5MB in the end (delta: -598.4MB). Peak memory consumption was 399.9MB. Max. memory is 16.1GB. [2024-06-28 02:43:41,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.22ms. Allocated memory is still 153.1MB. Free memory was 92.9MB in the beginning and 92.6MB in the end (delta: 282.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1058.63ms. Allocated memory is still 153.1MB. Free memory was 89.7MB in the beginning and 75.4MB in the end (delta: 14.2MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.99ms. Allocated memory is still 153.1MB. Free memory was 75.4MB in the beginning and 71.5MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.72ms. Allocated memory is still 153.1MB. Free memory was 71.5MB in the beginning and 67.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 811.76ms. Allocated memory was 153.1MB in the beginning and 232.8MB in the end (delta: 79.7MB). Free memory was 67.3MB in the beginning and 167.1MB in the end (delta: -99.8MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8157.71ms. Allocated memory was 232.8MB in the beginning and 1.1GB in the end (delta: 820.0MB). Free memory was 167.1MB in the beginning and 765.5MB in the end (delta: -598.4MB). Peak memory consumption was 399.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 78 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: 8.0s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 394 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1157 IncrementalHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 37 mSDtfsCounter, 1157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=391occurred in iteration=7, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 13/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:43:41,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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