./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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-ext/35_double_lock_p3_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-8857f20-m [2024-01-29 22:51:01,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:51:01,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:51:01,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:51:01,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:51:01,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:51:01,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:51:01,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:51:01,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:51:01,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:51:01,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:51:01,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:51:01,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:51:01,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:51:01,331 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:51:01,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:51:01,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:51:01,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:51:01,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:51:01,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:51:01,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:51:01,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:51:01,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:51:01,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:51:01,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:51:01,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:51:01,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:51:01,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:51:01,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:51:01,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:51:01,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:51:01,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:51:01,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:01,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:51:01,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:51:01,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:51:01,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:51:01,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:51:01,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:51:01,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:51:01,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:51:01,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:51:01,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:51:01,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:51:01,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:51:01,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:51:01,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:51:01,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:51:01,569 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:51:01,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-01-29 22:51:02,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:51:02,821 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:51:02,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-01-29 22:51:02,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b546324/19fda34bccdd4b31a071532088ef6f80/FLAGedbc22af9 [2024-01-29 22:51:02,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b546324/19fda34bccdd4b31a071532088ef6f80 [2024-01-29 22:51:02,846 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:51:02,847 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:51:02,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml [2024-01-29 22:51:02,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:51:02,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:51:02,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:02,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:51:02,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:51:02,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:02" (1/2) ... [2024-01-29 22:51:02,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e682bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:02, skipping insertion in model container [2024-01-29 22:51:02,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:02" (1/2) ... [2024-01-29 22:51:02,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cb8c4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:02, skipping insertion in model container [2024-01-29 22:51:02,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:02" (2/2) ... [2024-01-29 22:51:02,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e682bc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:02, skipping insertion in model container [2024-01-29 22:51:02,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:02" (2/2) ... [2024-01-29 22:51:02,931 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:51:02,956 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:51:02,957 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] count == -1 [2024-01-29 22:51:02,957 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] count == 1 [2024-01-29 22:51:02,957 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] count == 0 [2024-01-29 22:51:02,957 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] count == 0 [2024-01-29 22:51:02,957 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] count == 0 [2024-01-29 22:51:02,958 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] count == 0 [2024-01-29 22:51:02,958 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (count == 0) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:02,958 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (count == 0) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:02,958 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] count == 0 [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Loop invariant at [L702-L707] (unsigned long )arg == 0UL [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] count == 0 [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (count == 0) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] count == 0 [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (unsigned long )arg == 0UL [2024-01-29 22:51:02,959 INFO L98 nessWitnessExtractor]: Location invariant after [L712-L713] (unsigned long )arg == 0UL [2024-01-29 22:51:02,960 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] count == 0 [2024-01-29 22:51:02,995 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:51:03,266 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] [2024-01-29 22:51:03,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:03,290 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 [2024-01-29 22:51:03,354 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] Start Parsing Local Start Parsing Local [2024-01-29 22:51:03,355 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:03,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:03,404 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:51:03,404 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03 WrapperNode [2024-01-29 22:51:03,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:03,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:03,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:51:03,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:51:03,411 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 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,450 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 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,469 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-01-29 22:51:03,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:03,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:51:03,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:51:03,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:51:03,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,490 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-01-29 22:51:03,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:51:03,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:51:03,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:51:03,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:51:03,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (1/1) ... [2024-01-29 22:51:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:03,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:51:03,538 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) [2024-01-29 22:51:03,551 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 [2024-01-29 22:51:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-29 22:51:03,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-29 22:51:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 22:51:03,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 22:51:03,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:51:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:51:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:51:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:51:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:51:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:51:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:51:03,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:51:03,588 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:51:03,684 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:51:03,686 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:51:03,848 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:51:03,849 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:51:03,953 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:51:03,954 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 22:51:03,954 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:03 BoogieIcfgContainer [2024-01-29 22:51:03,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:51:03,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:51:03,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:51:03,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:51:03,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:51:02" (1/4) ... [2024-01-29 22:51:03,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546f80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:51:03, skipping insertion in model container [2024-01-29 22:51:03,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:02" (2/4) ... [2024-01-29 22:51:03,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546f80b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:51:03, skipping insertion in model container [2024-01-29 22:51:03,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:03" (3/4) ... [2024-01-29 22:51:03,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7546f80b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:51:03, skipping insertion in model container [2024-01-29 22:51:03,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:03" (4/4) ... [2024-01-29 22:51:03,975 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2024-01-29 22:51:03,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:51:04,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-01-29 22:51:04,000 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:51:04,086 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:04,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 138 flow [2024-01-29 22:51:04,166 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-01-29 22:51:04,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:04,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 3/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2024-01-29 22:51:04,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 138 flow [2024-01-29 22:51:04,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 64 transitions, 135 flow [2024-01-29 22:51:04,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:04,201 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;@554714b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:04,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-01-29 22:51:04,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:04,204 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:04,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:04,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:04,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:04,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-29 22:51:04,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash 8839, now seen corresponding path program 1 times [2024-01-29 22:51:04,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:04,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316613786] [2024-01-29 22:51:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:04,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316613786] [2024-01-29 22:51:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316613786] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:04,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:04,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418090811] [2024-01-29 22:51:04,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:04,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:04,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2024-01-29 22:51:04,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:04,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:04,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2024-01-29 22:51:04,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:04,567 INFO L124 PetriNetUnfolderBase]: 646/1576 cut-off events. [2024-01-29 22:51:04,567 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-29 22:51:04,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 1576 events. 646/1576 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10290 event pairs, 501 based on Foata normal form. 214/1656 useless extension candidates. Maximal degree in co-relation 2702. Up to 991 conditions per place. [2024-01-29 22:51:04,578 INFO L140 encePairwiseOnDemand]: 45/65 looper letters, 30 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2024-01-29 22:51:04,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 213 flow [2024-01-29 22:51:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-01-29 22:51:04,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6820512820512821 [2024-01-29 22:51:04,590 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 135 flow. Second operand 3 states and 133 transitions. [2024-01-29 22:51:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 213 flow [2024-01-29 22:51:04,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:04,595 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 176 flow [2024-01-29 22:51:04,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-01-29 22:51:04,599 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-01-29 22:51:04,599 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 176 flow [2024-01-29 22:51:04,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:04,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:04,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 22:51:04,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:51:04,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-29 22:51:04,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash 263694130, now seen corresponding path program 1 times [2024-01-29 22:51:04,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:04,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544336532] [2024-01-29 22:51:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544336532] [2024-01-29 22:51:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544336532] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:04,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194841755] [2024-01-29 22:51:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:04,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 65 [2024-01-29 22:51:04,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-01-29 22:51:04,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:04,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 65 [2024-01-29 22:51:04,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:04,940 INFO L124 PetriNetUnfolderBase]: 393/1347 cut-off events. [2024-01-29 22:51:04,940 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2024-01-29 22:51:04,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1347 events. 393/1347 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9609 event pairs, 30 based on Foata normal form. 138/1460 useless extension candidates. Maximal degree in co-relation 2428. Up to 528 conditions per place. [2024-01-29 22:51:04,946 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-29 22:51:04,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 303 flow [2024-01-29 22:51:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2024-01-29 22:51:04,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192307692307692 [2024-01-29 22:51:04,948 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 176 flow. Second operand 4 states and 187 transitions. [2024-01-29 22:51:04,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 303 flow [2024-01-29 22:51:04,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:04,952 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 156 flow [2024-01-29 22:51:04,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-01-29 22:51:04,952 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2024-01-29 22:51:04,953 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 156 flow [2024-01-29 22:51:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-01-29 22:51:04,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:04,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:51:04,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-29 22:51:04,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 151500668, now seen corresponding path program 1 times [2024-01-29 22:51:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033988101] [2024-01-29 22:51:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033988101] [2024-01-29 22:51:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033988101] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:05,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:05,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535809257] [2024-01-29 22:51:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:05,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:05,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:05,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 65 [2024-01-29 22:51:05,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:05,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:05,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 65 [2024-01-29 22:51:05,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:05,150 INFO L124 PetriNetUnfolderBase]: 341/878 cut-off events. [2024-01-29 22:51:05,172 INFO L125 PetriNetUnfolderBase]: For 69/130 co-relation queries the response was YES. [2024-01-29 22:51:05,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 878 events. 341/878 cut-off events. For 69/130 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5375 event pairs, 41 based on Foata normal form. 20/819 useless extension candidates. Maximal degree in co-relation 1640. Up to 519 conditions per place. [2024-01-29 22:51:05,177 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 28 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-01-29 22:51:05,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 224 flow [2024-01-29 22:51:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-01-29 22:51:05,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2024-01-29 22:51:05,179 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 156 flow. Second operand 4 states and 177 transitions. [2024-01-29 22:51:05,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 224 flow [2024-01-29 22:51:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:05,181 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 151 flow [2024-01-29 22:51:05,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-01-29 22:51:05,181 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-29 22:51:05,182 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 151 flow [2024-01-29 22:51:05,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:05,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:05,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:05,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:51:05,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-29 22:51:05,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 401543214, now seen corresponding path program 1 times [2024-01-29 22:51:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:05,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615161235] [2024-01-29 22:51:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:05,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:05,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:05,214 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:05,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2024-01-29 22:51:05,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 37 remaining) [2024-01-29 22:51:05,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 37 remaining) [2024-01-29 22:51:05,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 37 remaining) [2024-01-29 22:51:05,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 37 remaining) [2024-01-29 22:51:05,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 37 remaining) [2024-01-29 22:51:05,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 37 remaining) [2024-01-29 22:51:05,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 37 remaining) [2024-01-29 22:51:05,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 37 remaining) [2024-01-29 22:51:05,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 37 remaining) [2024-01-29 22:51:05,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 37 remaining) [2024-01-29 22:51:05,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 37 remaining) [2024-01-29 22:51:05,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 37 remaining) [2024-01-29 22:51:05,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 37 remaining) [2024-01-29 22:51:05,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 37 remaining) [2024-01-29 22:51:05,222 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 37 remaining) [2024-01-29 22:51:05,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 37 remaining) [2024-01-29 22:51:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:51:05,223 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 22:51:05,225 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:05,225 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 22:51:05,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:05,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 121 transitions, 262 flow [2024-01-29 22:51:05,261 INFO L124 PetriNetUnfolderBase]: 4/99 cut-off events. [2024-01-29 22:51:05,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:51:05,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 99 events. 4/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 296 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2024-01-29 22:51:05,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 121 transitions, 262 flow [2024-01-29 22:51:05,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 94 transitions, 201 flow [2024-01-29 22:51:05,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:05,264 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;@554714b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:05,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-01-29 22:51:05,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:05,265 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:05,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:05,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:05,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:05,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:05,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 12711, now seen corresponding path program 1 times [2024-01-29 22:51:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556925239] [2024-01-29 22:51:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:05,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:05,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556925239] [2024-01-29 22:51:05,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556925239] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:05,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:05,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510815726] [2024-01-29 22:51:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:05,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 121 [2024-01-29 22:51:05,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:05,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:05,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 121 [2024-01-29 22:51:05,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:08,752 INFO L124 PetriNetUnfolderBase]: 23103/42507 cut-off events. [2024-01-29 22:51:08,752 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-01-29 22:51:08,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77527 conditions, 42507 events. 23103/42507 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 393766 event pairs, 16737 based on Foata normal form. 6085/45260 useless extension candidates. Maximal degree in co-relation 77514. Up to 27946 conditions per place. [2024-01-29 22:51:09,165 INFO L140 encePairwiseOnDemand]: 89/121 looper letters, 73 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-01-29 22:51:09,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 448 flow [2024-01-29 22:51:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-01-29 22:51:09,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.721763085399449 [2024-01-29 22:51:09,167 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 201 flow. Second operand 3 states and 262 transitions. [2024-01-29 22:51:09,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 448 flow [2024-01-29 22:51:09,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 125 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:09,169 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 330 flow [2024-01-29 22:51:09,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-01-29 22:51:09,170 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2024-01-29 22:51:09,170 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 330 flow [2024-01-29 22:51:09,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:09,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:09,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 22:51:09,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:51:09,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:09,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash 379218818, now seen corresponding path program 1 times [2024-01-29 22:51:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042987773] [2024-01-29 22:51:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:09,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042987773] [2024-01-29 22:51:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042987773] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798347165] [2024-01-29 22:51:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:09,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 121 [2024-01-29 22:51:09,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2024-01-29 22:51:09,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:09,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 121 [2024-01-29 22:51:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:12,215 INFO L124 PetriNetUnfolderBase]: 17380/36415 cut-off events. [2024-01-29 22:51:12,215 INFO L125 PetriNetUnfolderBase]: For 10716/11001 co-relation queries the response was YES. [2024-01-29 22:51:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77278 conditions, 36415 events. 17380/36415 cut-off events. For 10716/11001 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 374718 event pairs, 8958 based on Foata normal form. 2814/37358 useless extension candidates. Maximal degree in co-relation 77262. Up to 21106 conditions per place. [2024-01-29 22:51:12,478 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 74 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-01-29 22:51:12,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 134 transitions, 594 flow [2024-01-29 22:51:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-01-29 22:51:12,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-29 22:51:12,480 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 330 flow. Second operand 4 states and 363 transitions. [2024-01-29 22:51:12,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 134 transitions, 594 flow [2024-01-29 22:51:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:12,506 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 294 flow [2024-01-29 22:51:12,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2024-01-29 22:51:12,509 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2024-01-29 22:51:12,509 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 294 flow [2024-01-29 22:51:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2024-01-29 22:51:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:12,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:12,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:51:12,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:12,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1451203707, now seen corresponding path program 1 times [2024-01-29 22:51:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113656495] [2024-01-29 22:51:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:12,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113656495] [2024-01-29 22:51:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113656495] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373545391] [2024-01-29 22:51:12,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:12,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:12,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:12,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 121 [2024-01-29 22:51:12,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2024-01-29 22:51:12,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:12,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 121 [2024-01-29 22:51:12,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:14,677 INFO L124 PetriNetUnfolderBase]: 15802/31966 cut-off events. [2024-01-29 22:51:14,677 INFO L125 PetriNetUnfolderBase]: For 3738/3828 co-relation queries the response was YES. [2024-01-29 22:51:14,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63987 conditions, 31966 events. 15802/31966 cut-off events. For 3738/3828 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 323602 event pairs, 2701 based on Foata normal form. 621/30491 useless extension candidates. Maximal degree in co-relation 63971. Up to 20423 conditions per place. [2024-01-29 22:51:14,863 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 60 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-01-29 22:51:14,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 467 flow [2024-01-29 22:51:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2024-01-29 22:51:14,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7293388429752066 [2024-01-29 22:51:14,865 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 294 flow. Second operand 4 states and 353 transitions. [2024-01-29 22:51:14,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 467 flow [2024-01-29 22:51:14,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:14,867 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 289 flow [2024-01-29 22:51:14,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2024-01-29 22:51:14,868 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -4 predicate places. [2024-01-29 22:51:14,868 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 289 flow [2024-01-29 22:51:14,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2024-01-29 22:51:14,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:14,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:51:14,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:14,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1971804299, now seen corresponding path program 1 times [2024-01-29 22:51:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628747958] [2024-01-29 22:51:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628747958] [2024-01-29 22:51:14,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628747958] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:14,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975796273] [2024-01-29 22:51:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:14,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 121 [2024-01-29 22:51:14,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-01-29 22:51:14,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:14,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 121 [2024-01-29 22:51:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:19,856 INFO L124 PetriNetUnfolderBase]: 50094/85157 cut-off events. [2024-01-29 22:51:19,856 INFO L125 PetriNetUnfolderBase]: For 9770/9863 co-relation queries the response was YES. [2024-01-29 22:51:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184767 conditions, 85157 events. 50094/85157 cut-off events. For 9770/9863 co-relation queries the response was YES. Maximal size of possible extension queue 2246. Compared 775889 event pairs, 16496 based on Foata normal form. 1974/83509 useless extension candidates. Maximal degree in co-relation 184752. Up to 34726 conditions per place. [2024-01-29 22:51:20,584 INFO L140 encePairwiseOnDemand]: 99/121 looper letters, 115 selfloop transitions, 26 changer transitions 0/164 dead transitions. [2024-01-29 22:51:20,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 164 transitions, 747 flow [2024-01-29 22:51:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-01-29 22:51:20,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6342975206611571 [2024-01-29 22:51:20,586 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 289 flow. Second operand 4 states and 307 transitions. [2024-01-29 22:51:20,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 164 transitions, 747 flow [2024-01-29 22:51:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 742 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:51:20,590 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 413 flow [2024-01-29 22:51:20,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-01-29 22:51:20,590 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2024-01-29 22:51:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 413 flow [2024-01-29 22:51:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-01-29 22:51:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:51:20,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -368429439, now seen corresponding path program 1 times [2024-01-29 22:51:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321725536] [2024-01-29 22:51:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:20,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-29 22:51:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321725536] [2024-01-29 22:51:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321725536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:20,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375421107] [2024-01-29 22:51:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:20,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:20,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 121 [2024-01-29 22:51:20,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2024-01-29 22:51:20,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:20,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 121 [2024-01-29 22:51:20,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:24,217 INFO L124 PetriNetUnfolderBase]: 26230/52154 cut-off events. [2024-01-29 22:51:24,217 INFO L125 PetriNetUnfolderBase]: For 26583/28042 co-relation queries the response was YES. [2024-01-29 22:51:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119555 conditions, 52154 events. 26230/52154 cut-off events. For 26583/28042 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 547848 event pairs, 3515 based on Foata normal form. 1101/50143 useless extension candidates. Maximal degree in co-relation 119537. Up to 32450 conditions per place. [2024-01-29 22:51:24,861 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 81 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-01-29 22:51:24,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 709 flow [2024-01-29 22:51:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-01-29 22:51:24,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.756198347107438 [2024-01-29 22:51:24,867 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 413 flow. Second operand 4 states and 366 transitions. [2024-01-29 22:51:24,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 709 flow [2024-01-29 22:51:24,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:24,887 INFO L231 Difference]: Finished difference. Result has 96 places, 102 transitions, 390 flow [2024-01-29 22:51:24,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=96, PETRI_TRANSITIONS=102} [2024-01-29 22:51:24,893 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2024-01-29 22:51:24,893 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 102 transitions, 390 flow [2024-01-29 22:51:24,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2024-01-29 22:51:24,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:24,903 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:24,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:51:24,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-29 22:51:24,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1463579256, now seen corresponding path program 1 times [2024-01-29 22:51:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:24,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955680565] [2024-01-29 22:51:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:24,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:24,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:24,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:24,966 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:24,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 54 remaining) [2024-01-29 22:51:24,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 54 remaining) [2024-01-29 22:51:24,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 54 remaining) [2024-01-29 22:51:24,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (39 of 54 remaining) [2024-01-29 22:51:24,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 54 remaining) [2024-01-29 22:51:24,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 54 remaining) [2024-01-29 22:51:24,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 54 remaining) [2024-01-29 22:51:24,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 54 remaining) [2024-01-29 22:51:24,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 54 remaining) [2024-01-29 22:51:24,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 54 remaining) [2024-01-29 22:51:24,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 54 remaining) [2024-01-29 22:51:24,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 54 remaining) [2024-01-29 22:51:24,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (11 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 54 remaining) [2024-01-29 22:51:24,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 54 remaining) [2024-01-29 22:51:24,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 54 remaining) [2024-01-29 22:51:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 22:51:24,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:24,979 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:24,979 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-29 22:51:25,020 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:25,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 177 transitions, 390 flow [2024-01-29 22:51:25,038 INFO L124 PetriNetUnfolderBase]: 5/132 cut-off events. [2024-01-29 22:51:25,038 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 22:51:25,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 132 events. 5/132 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 143. Up to 4 conditions per place. [2024-01-29 22:51:25,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 177 transitions, 390 flow [2024-01-29 22:51:25,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 269 flow [2024-01-29 22:51:25,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:25,044 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;@554714b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:25,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-01-29 22:51:25,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:25,045 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:51:25,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:25,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:25,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:51:25,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-29 22:51:25,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash 18375, now seen corresponding path program 1 times [2024-01-29 22:51:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007837658] [2024-01-29 22:51:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007837658] [2024-01-29 22:51:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007837658] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:25,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:25,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:51:25,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430378469] [2024-01-29 22:51:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:25,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:25,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 177 [2024-01-29 22:51:25,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-01-29 22:51:25,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:25,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 177 [2024-01-29 22:51:25,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand