./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue.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-rel/queue.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/pthread/queue.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue.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-eb4cb34-m [2024-06-21 18:17:47,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:17:47,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:17:47,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:17:47,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:17:47,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:17:47,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:17:47,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:17:47,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:17:47,919 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:17:47,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:17:47,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:17:47,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:17:47,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:17:47,922 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:17:47,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:17:47,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:17:47,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:17:47,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:17:47,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:17:47,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:17:47,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:17:47,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:17:47,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:17:47,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:17:47,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:17:47,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:17:47,926 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:17:47,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:17:47,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:17:47,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:17:47,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:17:47,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:17:47,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:17:47,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:17:47,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:17:47,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:17:47,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:17:47,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:17:47,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:17:47,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:17:47,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:17:47,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:17:47,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:17:48,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:17:48,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:17:48,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:17:48,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:17:48,186 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:17:48,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2024-06-21 18:17:49,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:17:49,476 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:17:49,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2024-06-21 18:17:49,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfd52852/27c7c5045af6478da42668989cc8f72e/FLAGe5ca8ecc4 [2024-06-21 18:17:49,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfd52852/27c7c5045af6478da42668989cc8f72e [2024-06-21 18:17:49,518 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:17:49,518 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:17:49,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue.yml/witness.yml [2024-06-21 18:17:49,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:17:49,611 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:17:49,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:17:49,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:17:49,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:17:49,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:17:49" (1/2) ... [2024-06-21 18:17:49,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d962b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:49, skipping insertion in model container [2024-06-21 18:17:49,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:17:49" (1/2) ... [2024-06-21 18:17:49,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e119c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:17:49, skipping insertion in model container [2024-06-21 18:17:49,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:49" (2/2) ... [2024-06-21 18:17:49,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d962b06 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:49, skipping insertion in model container [2024-06-21 18:17:49,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:49" (2/2) ... [2024-06-21 18:17:49,622 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:17:49,655 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:17:49,656 INFO L97 edCorrectnessWitness]: Location invariant before [L1065-L1065] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-21 18:17:49,657 INFO L97 edCorrectnessWitness]: Location invariant before [L1064-L1064] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-21 18:17:49,657 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-21 18:17:49,657 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:17:49,657 INFO L106 edCorrectnessWitness]: ghost_update [L1048-L1048] m_locked = 0; [2024-06-21 18:17:49,658 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-21 18:17:49,658 INFO L106 edCorrectnessWitness]: ghost_update [L1017-L1017] m_locked = 0; [2024-06-21 18:17:49,658 INFO L106 edCorrectnessWitness]: ghost_update [L1063-L1063] multithreaded = 1; [2024-06-21 18:17:49,658 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 1; [2024-06-21 18:17:49,658 INFO L106 edCorrectnessWitness]: ghost_update [L1029-L1029] m_locked = 0; [2024-06-21 18:17:49,659 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 1; [2024-06-21 18:17:49,702 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:17:50,019 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:17:50,027 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:17:50,124 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:17:50,183 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:17:50,185 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50 WrapperNode [2024-06-21 18:17:50,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:17:50,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:17:50,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:17:50,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:17:50,193 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 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,219 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 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,254 INFO L138 Inliner]: procedures = 274, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 266 [2024-06-21 18:17:50,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:17:50,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:17:50,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:17:50,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:17:50,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,298 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 8, 5, 4, 32]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0]. The 18 writes are split as follows [0, 0, 0, 3, 15]. [2024-06-21 18:17:50,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:17:50,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:17:50,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:17:50,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:17:50,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (1/1) ... [2024-06-21 18:17:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:17:50,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:17:50,351 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) [2024-06-21 18:17:50,362 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 [2024-06-21 18:17:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-21 18:17:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-21 18:17:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-21 18:17:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-21 18:17:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-21 18:17:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 18:17:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 18:17:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-21 18:17:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-21 18:17:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-06-21 18:17:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:17:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 18:17:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-21 18:17:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-21 18:17:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-06-21 18:17:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:17:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:17:50,416 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:17:50,542 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:17:50,543 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:17:50,811 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:17:50,812 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:17:51,093 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:17:51,093 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-21 18:17:51,094 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:17:51 BoogieIcfgContainer [2024-06-21 18:17:51,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:17:51,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:17:51,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:17:51,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:17:51,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:17:49" (1/4) ... [2024-06-21 18:17:51,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc0f656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:17:51, skipping insertion in model container [2024-06-21 18:17:51,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:17:49" (2/4) ... [2024-06-21 18:17:51,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc0f656 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:17:51, skipping insertion in model container [2024-06-21 18:17:51,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:17:50" (3/4) ... [2024-06-21 18:17:51,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc0f656 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:17:51, skipping insertion in model container [2024-06-21 18:17:51,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:17:51" (4/4) ... [2024-06-21 18:17:51,102 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-06-21 18:17:51,117 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:17:51,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 18:17:51,118 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:17:51,180 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-21 18:17:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 98 flow [2024-06-21 18:17:51,238 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-06-21 18:17:51,238 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-21 18:17:51,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-21 18:17:51,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 98 flow [2024-06-21 18:17:51,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-06-21 18:17:51,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:17:51,261 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;@7bc993d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:17:51,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 18:17:51,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:17:51,267 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 18:17:51,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:17:51,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:51,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-21 18:17:51,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:51,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -805322162, now seen corresponding path program 1 times [2024-06-21 18:17:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613819628] [2024-06-21 18:17:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613819628] [2024-06-21 18:17:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613819628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:17:51,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400356957] [2024-06-21 18:17:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:17:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:17:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:17:51,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-21 18:17:51,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-06-21 18:17:51,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:51,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-21 18:17:51,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:51,951 INFO L124 PetriNetUnfolderBase]: 429/795 cut-off events. [2024-06-21 18:17:51,951 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-21 18:17:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 795 events. 429/795 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3353 event pairs, 228 based on Foata normal form. 81/833 useless extension candidates. Maximal degree in co-relation 1490. Up to 411 conditions per place. [2024-06-21 18:17:51,957 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 37 selfloop transitions, 2 changer transitions 5/49 dead transitions. [2024-06-21 18:17:51,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 201 flow [2024-06-21 18:17:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:17:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:17:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-21 18:17:51,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-21 18:17:51,968 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 3 states and 68 transitions. [2024-06-21 18:17:51,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 201 flow [2024-06-21 18:17:51,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 18:17:51,973 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 81 flow [2024-06-21 18:17:51,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-21 18:17:51,977 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-06-21 18:17:51,977 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 81 flow [2024-06-21 18:17:51,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-06-21 18:17:51,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:51,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:51,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:17:51,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:51,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1849625849, now seen corresponding path program 1 times [2024-06-21 18:17:51,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976861935] [2024-06-21 18:17:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:52,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:52,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976861935] [2024-06-21 18:17:52,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976861935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:52,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:17:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807852064] [2024-06-21 18:17:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:17:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:17:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:17:52,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-21 18:17:52,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-21 18:17:52,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:52,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-21 18:17:52,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:52,327 INFO L124 PetriNetUnfolderBase]: 484/917 cut-off events. [2024-06-21 18:17:52,327 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-06-21 18:17:52,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 917 events. 484/917 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4112 event pairs, 180 based on Foata normal form. 20/934 useless extension candidates. Maximal degree in co-relation 1043. Up to 442 conditions per place. [2024-06-21 18:17:52,331 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 44 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-21 18:17:52,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 238 flow [2024-06-21 18:17:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:17:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:17:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-21 18:17:52,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-21 18:17:52,333 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 81 flow. Second operand 5 states and 82 transitions. [2024-06-21 18:17:52,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 238 flow [2024-06-21 18:17:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:17:52,334 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 136 flow [2024-06-21 18:17:52,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-06-21 18:17:52,335 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-21 18:17:52,335 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 136 flow [2024-06-21 18:17:52,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-21 18:17:52,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:52,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:52,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:17:52,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:52,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1503824909, now seen corresponding path program 1 times [2024-06-21 18:17:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:52,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846999468] [2024-06-21 18:17:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846999468] [2024-06-21 18:17:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846999468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:52,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:52,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:17:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404639001] [2024-06-21 18:17:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:52,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:17:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:17:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:17:52,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-21 18:17:52,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:52,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:52,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-21 18:17:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:52,762 INFO L124 PetriNetUnfolderBase]: 597/1154 cut-off events. [2024-06-21 18:17:52,762 INFO L125 PetriNetUnfolderBase]: For 564/568 co-relation queries the response was YES. [2024-06-21 18:17:52,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1154 events. 597/1154 cut-off events. For 564/568 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5213 event pairs, 291 based on Foata normal form. 27/1176 useless extension candidates. Maximal degree in co-relation 2317. Up to 706 conditions per place. [2024-06-21 18:17:52,767 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 48 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-21 18:17:52,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 300 flow [2024-06-21 18:17:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:17:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:17:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-21 18:17:52,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-21 18:17:52,769 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 136 flow. Second operand 4 states and 71 transitions. [2024-06-21 18:17:52,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 300 flow [2024-06-21 18:17:52,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 18:17:52,771 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 154 flow [2024-06-21 18:17:52,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-06-21 18:17:52,772 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2024-06-21 18:17:52,772 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 154 flow [2024-06-21 18:17:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:17:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:52,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:17:52,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 730425084, now seen corresponding path program 1 times [2024-06-21 18:17:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858977750] [2024-06-21 18:17:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:52,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858977750] [2024-06-21 18:17:52,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858977750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:52,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:52,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:17:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744757152] [2024-06-21 18:17:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:52,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:17:52,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:17:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:17:52,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-21 18:17:52,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-21 18:17:52,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:52,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-21 18:17:52,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:53,043 INFO L124 PetriNetUnfolderBase]: 328/670 cut-off events. [2024-06-21 18:17:53,043 INFO L125 PetriNetUnfolderBase]: For 386/389 co-relation queries the response was YES. [2024-06-21 18:17:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 670 events. 328/670 cut-off events. For 386/389 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2653 event pairs, 127 based on Foata normal form. 38/705 useless extension candidates. Maximal degree in co-relation 1089. Up to 321 conditions per place. [2024-06-21 18:17:53,046 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 32 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2024-06-21 18:17:53,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 236 flow [2024-06-21 18:17:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:17:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:17:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-21 18:17:53,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-21 18:17:53,048 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 154 flow. Second operand 6 states and 77 transitions. [2024-06-21 18:17:53,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 236 flow [2024-06-21 18:17:53,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 220 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 18:17:53,051 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 132 flow [2024-06-21 18:17:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-06-21 18:17:53,051 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-06-21 18:17:53,052 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 132 flow [2024-06-21 18:17:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-21 18:17:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:53,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:17:53,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:53,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1161423950, now seen corresponding path program 1 times [2024-06-21 18:17:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451060194] [2024-06-21 18:17:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451060194] [2024-06-21 18:17:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451060194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:53,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:53,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:17:53,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989503339] [2024-06-21 18:17:53,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:53,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:17:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:17:53,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:17:53,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2024-06-21 18:17:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-06-21 18:17:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:53,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2024-06-21 18:17:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:53,707 INFO L124 PetriNetUnfolderBase]: 864/1618 cut-off events. [2024-06-21 18:17:53,707 INFO L125 PetriNetUnfolderBase]: For 1161/1162 co-relation queries the response was YES. [2024-06-21 18:17:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1618 events. 864/1618 cut-off events. For 1161/1162 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7944 event pairs, 373 based on Foata normal form. 10/1626 useless extension candidates. Maximal degree in co-relation 1760. Up to 717 conditions per place. [2024-06-21 18:17:53,714 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 28 selfloop transitions, 3 changer transitions 53/87 dead transitions. [2024-06-21 18:17:53,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 486 flow [2024-06-21 18:17:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:17:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:17:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-21 18:17:53,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-06-21 18:17:53,718 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 132 flow. Second operand 8 states and 122 transitions. [2024-06-21 18:17:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 486 flow [2024-06-21 18:17:53,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 87 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 18:17:53,723 INFO L231 Difference]: Finished difference. Result has 53 places, 33 transitions, 132 flow [2024-06-21 18:17:53,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=132, PETRI_PLACES=53, PETRI_TRANSITIONS=33} [2024-06-21 18:17:53,725 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-06-21 18:17:53,726 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 33 transitions, 132 flow [2024-06-21 18:17:53,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-06-21 18:17:53,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:17:53,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:17:53,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:17:53,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:17:53,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:17:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -246655140, now seen corresponding path program 2 times [2024-06-21 18:17:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:17:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554793655] [2024-06-21 18:17:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:17:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:17:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:17:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:17:54,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:17:54,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554793655] [2024-06-21 18:17:54,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554793655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:17:54,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:17:54,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:17:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133692048] [2024-06-21 18:17:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:17:54,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:17:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:17:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:17:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:17:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-21 18:17:54,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 33 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-06-21 18:17:54,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:17:54,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-21 18:17:54,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:17:54,155 INFO L124 PetriNetUnfolderBase]: 241/491 cut-off events. [2024-06-21 18:17:54,155 INFO L125 PetriNetUnfolderBase]: For 398/400 co-relation queries the response was YES. [2024-06-21 18:17:54,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 491 events. 241/491 cut-off events. For 398/400 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1839 event pairs, 130 based on Foata normal form. 9/500 useless extension candidates. Maximal degree in co-relation 1131. Up to 286 conditions per place. [2024-06-21 18:17:54,156 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-21 18:17:54,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 232 flow [2024-06-21 18:17:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:17:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:17:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-21 18:17:54,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-21 18:17:54,157 INFO L175 Difference]: Start difference. First operand has 53 places, 33 transitions, 132 flow. Second operand 4 states and 67 transitions. [2024-06-21 18:17:54,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 232 flow [2024-06-21 18:17:54,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 208 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:17:54,159 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-21 18:17:54,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-21 18:17:54,162 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-21 18:17:54,162 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-21 18:17:54,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-06-21 18:17:54,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 18:17:54,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 18:17:54,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 18:17:54,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 18:17:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:17:54,165 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-21 18:17:54,169 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 18:17:54,169 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 18:17:54,172 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 18:17:54,172 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 18:17:54,173 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 06:17:54 BasicIcfg [2024-06-21 18:17:54,173 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 18:17:54,176 INFO L158 Benchmark]: Toolchain (without parser) took 4562.11ms. Allocated memory was 199.2MB in the beginning and 316.7MB in the end (delta: 117.4MB). Free memory was 123.6MB in the beginning and 180.7MB in the end (delta: -57.2MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,176 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 161.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 18:17:54,178 INFO L158 Benchmark]: Witness Parser took 0.45ms. Allocated memory is still 199.2MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 18:17:54,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.43ms. Allocated memory is still 199.2MB. Free memory was 123.4MB in the beginning and 142.3MB in the end (delta: -19.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.88ms. Allocated memory is still 199.2MB. Free memory was 142.3MB in the beginning and 138.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,179 INFO L158 Benchmark]: Boogie Preprocessor took 69.78ms. Allocated memory is still 199.2MB. Free memory was 138.1MB in the beginning and 135.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,179 INFO L158 Benchmark]: RCFGBuilder took 768.57ms. Allocated memory is still 199.2MB. Free memory was 135.1MB in the beginning and 145.8MB in the end (delta: -10.7MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,180 INFO L158 Benchmark]: TraceAbstraction took 3077.05ms. Allocated memory was 199.2MB in the beginning and 316.7MB in the end (delta: 117.4MB). Free memory was 144.7MB in the beginning and 180.7MB in the end (delta: -36.0MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2024-06-21 18:17:54,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 199.2MB. Free memory is still 161.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.45ms. Allocated memory is still 199.2MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.43ms. Allocated memory is still 199.2MB. Free memory was 123.4MB in the beginning and 142.3MB in the end (delta: -19.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.88ms. Allocated memory is still 199.2MB. Free memory was 142.3MB in the beginning and 138.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.78ms. Allocated memory is still 199.2MB. Free memory was 138.1MB in the beginning and 135.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 768.57ms. Allocated memory is still 199.2MB. Free memory was 135.1MB in the beginning and 145.8MB in the end (delta: -10.7MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3077.05ms. Allocated memory was 199.2MB in the beginning and 316.7MB in the end (delta: 117.4MB). Free memory was 144.7MB in the beginning and 180.7MB in the end (delta: -36.0MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1064]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1065]: 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, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 226 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 653 IncrementalHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 12 mSDtfsCounter, 653 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 787 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 18:17:54,206 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