./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc.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/01b_inc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 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/01b_inc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc.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-ab2e0ac-m [2024-01-29 14:11:45,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:11:45,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:11:45,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:11:45,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:11:45,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:11:45,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:11:45,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:11:45,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:11:45,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:11:45,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:11:45,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:11:45,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:11:45,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:11:45,570 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:11:45,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:11:45,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:11:45,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:11:45,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:11:45,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:11:45,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:11:45,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:11:45,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:11:45,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:11:45,573 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:11:45,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:11:45,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:11:45,573 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:11:45,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:11:45,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:11:45,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:11:45,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:11:45,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:11:45,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:11:45,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:11:45,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:11:45,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:11:45,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:11:45,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:11:45,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:11:45,577 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:11:45,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:11:45,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:11:45,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:11:45,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:11:45,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:11:45,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:11:45,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:11:45,881 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:11:45,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2024-01-29 14:11:47,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:11:47,305 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:11:47,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2024-01-29 14:11:47,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f29558d1/abaade05f7af4eb29c6ff4334d58d1e8/FLAGc766cd832 [2024-01-29 14:11:47,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f29558d1/abaade05f7af4eb29c6ff4334d58d1e8 [2024-01-29 14:11:47,339 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:11:47,339 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:11:47,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc.yml/witness.yml [2024-01-29 14:11:47,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:11:47,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:11:47,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:11:47,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:11:47,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:11:47,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:11:47" (1/2) ... [2024-01-29 14:11:47,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc3ec36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:47, skipping insertion in model container [2024-01-29 14:11:47,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:11:47" (1/2) ... [2024-01-29 14:11:47,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a09f5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:11:47, skipping insertion in model container [2024-01-29 14:11:47,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:47" (2/2) ... [2024-01-29 14:11:47,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc3ec36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:11:47, skipping insertion in model container [2024-01-29 14:11:47,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:47" (2/2) ... [2024-01-29 14:11:47,428 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:11:47,477 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:11:47,478 INFO L98 nessWitnessExtractor]: Location invariant after [L710-L714] (unsigned int )m == 0U [2024-01-29 14:11:47,478 INFO L98 nessWitnessExtractor]: Location invariant after [L705-L709] (unsigned int )m == 1U [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] 0U == v [2024-01-29 14:11:47,479 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] v == 0U [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (unsigned long )arg == 0UL [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] 0U == v [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] v == 0U [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-29 14:11:47,480 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned int )value != 0U [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] v <= 4294967294U [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] 1U <= (unsigned int )value [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:11:47,481 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:11:47,482 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,482 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,482 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,482 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] 0U == v [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] v == 0U [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] 0U == v [2024-01-29 14:11:47,483 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] v == 0U [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] v <= 4294967294U [2024-01-29 14:11:47,484 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L729] 0U == v [2024-01-29 14:11:47,485 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L729] (unsigned long )arg == 0UL [2024-01-29 14:11:47,486 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L729] v == 0U [2024-01-29 14:11:47,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:11:47,898 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/01b_inc.i[31005,31018] [2024-01-29 14:11:47,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:11:47,918 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:11:47,950 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_atomic_acquire() { assume_abort_if_not(m==0); m = 1; } with a witness entry [2024-01-29 14:11:47,951 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_atomic_release() { assume_abort_if_not(m==1); m = 0; } 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:11:47,985 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/01b_inc.i[31005,31018] Start Parsing Local Start Parsing Local [2024-01-29 14:11:47,988 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 Start Parsing Local Start Parsing Local [2024-01-29 14:11:47,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:11:48,025 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:11:48,025 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:11:48 WrapperNode [2024-01-29 14:11:48,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:11:48,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:11:48,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:11:48,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:11:48,034 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,055 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,077 INFO L138 Inliner]: procedures = 172, calls = 19, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 90 [2024-01-29 14:11:48,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:11:48,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:11:48,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:11:48,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:11:48,089 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,089 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,095 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,121 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-01-29 14:11:48,121 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,122 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,127 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,137 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,138 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,139 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:11:48,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:11:48,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:11:48,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:11:48,143 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 02:11:48" (1/1) ... [2024-01-29 14:11:48,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:11:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:11:48,172 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 14:11:48,180 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 14:11:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 14:11:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:11:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:11:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:11:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:11:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-29 14:11:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:11:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:11:48,207 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 14:11:48,313 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:11:48,314 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:11:48,564 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:11:48,564 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:11:48,736 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:11:48,737 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-29 14:11:48,737 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:11:48 BoogieIcfgContainer [2024-01-29 14:11:48,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:11:48,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:11:48,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:11:48,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:11:48,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:11:47" (1/4) ... [2024-01-29 14:11:48,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c772cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:11:48, skipping insertion in model container [2024-01-29 14:11:48,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:11:47" (2/4) ... [2024-01-29 14:11:48,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c772cb4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:11:48, skipping insertion in model container [2024-01-29 14:11:48,744 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 02:11:48" (3/4) ... [2024-01-29 14:11:48,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c772cb4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:11:48, skipping insertion in model container [2024-01-29 14:11:48,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:11:48" (4/4) ... [2024-01-29 14:11:48,746 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-01-29 14:11:48,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:11:48,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-01-29 14:11:48,764 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:11:48,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:11:48,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 140 flow [2024-01-29 14:11:48,906 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-01-29 14:11:48,906 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:48,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-01-29 14:11:48,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 68 transitions, 140 flow [2024-01-29 14:11:48,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 140 flow [2024-01-29 14:11:48,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:11:48,927 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;@1f53d055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:11:48,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-29 14:11:48,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:11:48,931 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:11:48,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:48,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:48,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:11:48,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 14:11:48,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash 293221848, now seen corresponding path program 1 times [2024-01-29 14:11:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209987334] [2024-01-29 14:11:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:49,372 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 14:11:49,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:49,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209987334] [2024-01-29 14:11:49,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209987334] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:49,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:49,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863180254] [2024-01-29 14:11:49,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:49,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:49,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:49,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2024-01-29 14:11:49,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 14:11:49,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:49,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2024-01-29 14:11:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:49,619 INFO L124 PetriNetUnfolderBase]: 21/156 cut-off events. [2024-01-29 14:11:49,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:11:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 156 events. 21/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 569 event pairs, 0 based on Foata normal form. 30/153 useless extension candidates. Maximal degree in co-relation 202. Up to 48 conditions per place. [2024-01-29 14:11:49,624 INFO L140 encePairwiseOnDemand]: 47/68 looper letters, 15 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-01-29 14:11:49,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 142 flow [2024-01-29 14:11:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-01-29 14:11:49,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6544117647058824 [2024-01-29 14:11:49,641 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 140 flow. Second operand 4 states and 178 transitions. [2024-01-29 14:11:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 142 flow [2024-01-29 14:11:49,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:11:49,650 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 106 flow [2024-01-29 14:11:49,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-01-29 14:11:49,655 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -16 predicate places. [2024-01-29 14:11:49,656 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 106 flow [2024-01-29 14:11:49,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 14:11:49,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:49,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-29 14:11:49,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:11:49,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 14:11:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash 499884269, now seen corresponding path program 1 times [2024-01-29 14:11:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837329502] [2024-01-29 14:11:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:11:49,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:11:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:11:49,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:11:49,719 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:11:49,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-01-29 14:11:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-29 14:11:49,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-29 14:11:49,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-29 14:11:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-29 14:11:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-29 14:11:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-29 14:11:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-29 14:11:49,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-29 14:11:49,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-29 14:11:49,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-29 14:11:49,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-29 14:11:49,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-29 14:11:49,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-29 14:11:49,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (36 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-29 14:11:49,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-01-29 14:11:49,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-29 14:11:49,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-29 14:11:49,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-29 14:11:49,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-01-29 14:11:49,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-29 14:11:49,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-29 14:11:49,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-29 14:11:49,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-01-29 14:11:49,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-29 14:11:49,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-29 14:11:49,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-29 14:11:49,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-29 14:11:49,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-29 14:11:49,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-29 14:11:49,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-29 14:11:49,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-29 14:11:49,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-29 14:11:49,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-29 14:11:49,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (6 of 61 remaining) [2024-01-29 14:11:49,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-29 14:11:49,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-29 14:11:49,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-29 14:11:49,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-01-29 14:11:49,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-29 14:11:49,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-29 14:11:49,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:11:49,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-29 14:11:49,748 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:11:49,749 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 14:11:49,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:11:49,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 272 flow [2024-01-29 14:11:49,853 INFO L124 PetriNetUnfolderBase]: 2/136 cut-off events. [2024-01-29 14:11:49,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:11:49,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 2/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 476 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 127. Up to 3 conditions per place. [2024-01-29 14:11:49,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 131 transitions, 272 flow [2024-01-29 14:11:49,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 272 flow [2024-01-29 14:11:49,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:11:49,861 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;@1f53d055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:11:49,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-01-29 14:11:49,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:11:49,863 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:11:49,863 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:11:49,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:49,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:11:49,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 88 more)] === [2024-01-29 14:11:49,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 418297369, now seen corresponding path program 1 times [2024-01-29 14:11:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:49,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440145176] [2024-01-29 14:11:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:49,966 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 14:11:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440145176] [2024-01-29 14:11:49,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440145176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115682031] [2024-01-29 14:11:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:50,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2024-01-29 14:11:50,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 14:11:50,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:50,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2024-01-29 14:11:50,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:50,394 INFO L124 PetriNetUnfolderBase]: 531/2042 cut-off events. [2024-01-29 14:11:50,394 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-29 14:11:50,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 2042 events. 531/2042 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17081 event pairs, 18 based on Foata normal form. 330/1892 useless extension candidates. Maximal degree in co-relation 2667. Up to 807 conditions per place. [2024-01-29 14:11:50,413 INFO L140 encePairwiseOnDemand]: 105/131 looper letters, 37 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-01-29 14:11:50,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 335 flow [2024-01-29 14:11:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2024-01-29 14:11:50,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7595419847328244 [2024-01-29 14:11:50,417 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 272 flow. Second operand 4 states and 398 transitions. [2024-01-29 14:11:50,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 335 flow [2024-01-29 14:11:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:11:50,420 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 228 flow [2024-01-29 14:11:50,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2024-01-29 14:11:50,421 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -21 predicate places. [2024-01-29 14:11:50,421 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 228 flow [2024-01-29 14:11:50,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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 14:11:50,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:50,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:50,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:11:50,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 88 more)] === [2024-01-29 14:11:50,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1743136773, now seen corresponding path program 1 times [2024-01-29 14:11:50,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403374877] [2024-01-29 14:11:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:50,502 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 14:11:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:50,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403374877] [2024-01-29 14:11:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403374877] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:11:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323070519] [2024-01-29 14:11:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:11:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:11:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:11:50,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 131 [2024-01-29 14:11:50,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 14:11:50,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:50,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 131 [2024-01-29 14:11:50,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:50,780 INFO L124 PetriNetUnfolderBase]: 551/1968 cut-off events. [2024-01-29 14:11:50,780 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-01-29 14:11:50,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 1968 events. 551/1968 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 16158 event pairs, 351 based on Foata normal form. 255/1697 useless extension candidates. Maximal degree in co-relation 2910. Up to 573 conditions per place. [2024-01-29 14:11:50,795 INFO L140 encePairwiseOnDemand]: 119/131 looper letters, 36 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-01-29 14:11:50,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 315 flow [2024-01-29 14:11:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:11:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:11:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2024-01-29 14:11:50,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7633587786259542 [2024-01-29 14:11:50,797 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 228 flow. Second operand 3 states and 300 transitions. [2024-01-29 14:11:50,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 315 flow [2024-01-29 14:11:50,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:50,800 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 209 flow [2024-01-29 14:11:50,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-01-29 14:11:50,801 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -31 predicate places. [2024-01-29 14:11:50,801 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 209 flow [2024-01-29 14:11:50,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 14:11:50,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:50,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:50,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:11:50,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 88 more)] === [2024-01-29 14:11:50,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1681742256, now seen corresponding path program 1 times [2024-01-29 14:11:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757770077] [2024-01-29 14:11:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:50,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:50,918 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 14:11:50,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:50,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757770077] [2024-01-29 14:11:50,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757770077] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:50,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566793829] [2024-01-29 14:11:50,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:50,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:50,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2024-01-29 14:11:50,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 14:11:50,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:50,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2024-01-29 14:11:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:51,282 INFO L124 PetriNetUnfolderBase]: 498/1886 cut-off events. [2024-01-29 14:11:51,282 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-01-29 14:11:51,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 1886 events. 498/1886 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15923 event pairs, 18 based on Foata normal form. 300/1791 useless extension candidates. Maximal degree in co-relation 2805. Up to 723 conditions per place. [2024-01-29 14:11:51,293 INFO L140 encePairwiseOnDemand]: 116/131 looper letters, 44 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-01-29 14:11:51,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 327 flow [2024-01-29 14:11:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2024-01-29 14:11:51,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7385496183206107 [2024-01-29 14:11:51,296 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 209 flow. Second operand 4 states and 387 transitions. [2024-01-29 14:11:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 327 flow [2024-01-29 14:11:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 106 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:51,298 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 183 flow [2024-01-29 14:11:51,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-01-29 14:11:51,299 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -43 predicate places. [2024-01-29 14:11:51,299 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 183 flow [2024-01-29 14:11:51,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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 14:11:51,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:51,300 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-29 14:11:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:11:51,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 88 more)] === [2024-01-29 14:11:51,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 594344150, now seen corresponding path program 1 times [2024-01-29 14:11:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112627222] [2024-01-29 14:11:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:11:51,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:11:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:11:51,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:11:51,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:11:51,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (90 of 91 remaining) [2024-01-29 14:11:51,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (89 of 91 remaining) [2024-01-29 14:11:51,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (88 of 91 remaining) [2024-01-29 14:11:51,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (87 of 91 remaining) [2024-01-29 14:11:51,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (86 of 91 remaining) [2024-01-29 14:11:51,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (85 of 91 remaining) [2024-01-29 14:11:51,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (84 of 91 remaining) [2024-01-29 14:11:51,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (83 of 91 remaining) [2024-01-29 14:11:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (82 of 91 remaining) [2024-01-29 14:11:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (81 of 91 remaining) [2024-01-29 14:11:51,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (80 of 91 remaining) [2024-01-29 14:11:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (79 of 91 remaining) [2024-01-29 14:11:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (78 of 91 remaining) [2024-01-29 14:11:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 91 remaining) [2024-01-29 14:11:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 91 remaining) [2024-01-29 14:11:51,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 91 remaining) [2024-01-29 14:11:51,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 91 remaining) [2024-01-29 14:11:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 91 remaining) [2024-01-29 14:11:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 91 remaining) [2024-01-29 14:11:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 91 remaining) [2024-01-29 14:11:51,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (66 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 91 remaining) [2024-01-29 14:11:51,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 91 remaining) [2024-01-29 14:11:51,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 91 remaining) [2024-01-29 14:11:51,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 91 remaining) [2024-01-29 14:11:51,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 91 remaining) [2024-01-29 14:11:51,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 91 remaining) [2024-01-29 14:11:51,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 91 remaining) [2024-01-29 14:11:51,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 91 remaining) [2024-01-29 14:11:51,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 91 remaining) [2024-01-29 14:11:51,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (36 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 91 remaining) [2024-01-29 14:11:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 91 remaining) [2024-01-29 14:11:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 91 remaining) [2024-01-29 14:11:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 91 remaining) [2024-01-29 14:11:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 91 remaining) [2024-01-29 14:11:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 91 remaining) [2024-01-29 14:11:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 91 remaining) [2024-01-29 14:11:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 91 remaining) [2024-01-29 14:11:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 91 remaining) [2024-01-29 14:11:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (6 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 91 remaining) [2024-01-29 14:11:51,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 91 remaining) [2024-01-29 14:11:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:11:51,365 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 14:11:51,365 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:11:51,365 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-29 14:11:51,416 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:11:51,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 194 transitions, 406 flow [2024-01-29 14:11:51,440 INFO L124 PetriNetUnfolderBase]: 3/202 cut-off events. [2024-01-29 14:11:51,440 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 14:11:51,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 3/202 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 894 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 189. Up to 4 conditions per place. [2024-01-29 14:11:51,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 194 transitions, 406 flow [2024-01-29 14:11:51,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 194 transitions, 406 flow [2024-01-29 14:11:51,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:11:51,448 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;@1f53d055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:11:51,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2024-01-29 14:11:51,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:11:51,450 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:11:51,450 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:11:51,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:51,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:11:51,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:11:51,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 603492121, now seen corresponding path program 1 times [2024-01-29 14:11:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:51,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083143981] [2024-01-29 14:11:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:51,497 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 14:11:51,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083143981] [2024-01-29 14:11:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083143981] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:51,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673863379] [2024-01-29 14:11:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:51,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:51,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 194 [2024-01-29 14:11:51,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 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 14:11:51,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:51,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 194 [2024-01-29 14:11:51,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:54,384 INFO L124 PetriNetUnfolderBase]: 8631/27466 cut-off events. [2024-01-29 14:11:54,384 INFO L125 PetriNetUnfolderBase]: For 898/898 co-relation queries the response was YES. [2024-01-29 14:11:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39866 conditions, 27466 events. 8631/27466 cut-off events. For 898/898 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 346438 event pairs, 5247 based on Foata normal form. 3285/21948 useless extension candidates. Maximal degree in co-relation 33536. Up to 11097 conditions per place. [2024-01-29 14:11:54,650 INFO L140 encePairwiseOnDemand]: 163/194 looper letters, 59 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2024-01-29 14:11:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 190 transitions, 532 flow [2024-01-29 14:11:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 618 transitions. [2024-01-29 14:11:54,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7963917525773195 [2024-01-29 14:11:54,653 INFO L175 Difference]: Start difference. First operand has 198 places, 194 transitions, 406 flow. Second operand 4 states and 618 transitions. [2024-01-29 14:11:54,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 190 transitions, 532 flow [2024-01-29 14:11:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 190 transitions, 528 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-29 14:11:54,657 INFO L231 Difference]: Finished difference. Result has 172 places, 165 transitions, 350 flow [2024-01-29 14:11:54,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=172, PETRI_TRANSITIONS=165} [2024-01-29 14:11:54,659 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -26 predicate places. [2024-01-29 14:11:54,659 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 165 transitions, 350 flow [2024-01-29 14:11:54,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 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 14:11:54,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:54,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:11:54,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:11:54,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 135366971, now seen corresponding path program 1 times [2024-01-29 14:11:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969434211] [2024-01-29 14:11:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:54,690 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 14:11:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969434211] [2024-01-29 14:11:54,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969434211] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:54,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:11:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085402169] [2024-01-29 14:11:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:54,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:11:54,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:11:54,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:11:54,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 194 [2024-01-29 14:11:54,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 165 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 14:11:54,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:54,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 194 [2024-01-29 14:11:54,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:56,924 INFO L124 PetriNetUnfolderBase]: 9161/21865 cut-off events. [2024-01-29 14:11:56,924 INFO L125 PetriNetUnfolderBase]: For 2032/2032 co-relation queries the response was YES. [2024-01-29 14:11:57,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35064 conditions, 21865 events. 9161/21865 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 237674 event pairs, 5268 based on Foata normal form. 2664/19890 useless extension candidates. Maximal degree in co-relation 35047. Up to 8043 conditions per place. [2024-01-29 14:11:57,116 INFO L140 encePairwiseOnDemand]: 182/194 looper letters, 58 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-01-29 14:11:57,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 179 transitions, 508 flow [2024-01-29 14:11:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:11:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:11:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2024-01-29 14:11:57,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7955326460481099 [2024-01-29 14:11:57,118 INFO L175 Difference]: Start difference. First operand has 172 places, 165 transitions, 350 flow. Second operand 3 states and 463 transitions. [2024-01-29 14:11:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 179 transitions, 508 flow [2024-01-29 14:11:57,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 179 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:57,127 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 331 flow [2024-01-29 14:11:57,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-01-29 14:11:57,129 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -36 predicate places. [2024-01-29 14:11:57,129 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 331 flow [2024-01-29 14:11:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 14:11:57,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:57,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:11:57,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:11:57,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash -214120080, now seen corresponding path program 1 times [2024-01-29 14:11:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895364649] [2024-01-29 14:11:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:57,202 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 14:11:57,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895364649] [2024-01-29 14:11:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895364649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:11:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665579163] [2024-01-29 14:11:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:11:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:11:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:11:57,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 194 [2024-01-29 14:11:57,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 14:11:57,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:57,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 194 [2024-01-29 14:11:57,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:11:59,015 INFO L124 PetriNetUnfolderBase]: 8298/23446 cut-off events. [2024-01-29 14:11:59,016 INFO L125 PetriNetUnfolderBase]: For 1256/1256 co-relation queries the response was YES. [2024-01-29 14:11:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36081 conditions, 23446 events. 8298/23446 cut-off events. For 1256/1256 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 278797 event pairs, 198 based on Foata normal form. 3300/21577 useless extension candidates. Maximal degree in co-relation 36065. Up to 10743 conditions per place. [2024-01-29 14:11:59,208 INFO L140 encePairwiseOnDemand]: 179/194 looper letters, 66 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2024-01-29 14:11:59,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 175 transitions, 520 flow [2024-01-29 14:11:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:11:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:11:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions. [2024-01-29 14:11:59,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7693298969072165 [2024-01-29 14:11:59,211 INFO L175 Difference]: Start difference. First operand has 162 places, 155 transitions, 331 flow. Second operand 4 states and 597 transitions. [2024-01-29 14:11:59,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 175 transitions, 520 flow [2024-01-29 14:11:59,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 175 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:11:59,215 INFO L231 Difference]: Finished difference. Result has 150 places, 142 transitions, 305 flow [2024-01-29 14:11:59,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=150, PETRI_TRANSITIONS=142} [2024-01-29 14:11:59,217 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -48 predicate places. [2024-01-29 14:11:59,217 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 142 transitions, 305 flow [2024-01-29 14:11:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 14:11:59,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:11:59,218 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:11:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:11:59,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:11:59,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:11:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 389058962, now seen corresponding path program 1 times [2024-01-29 14:11:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:11:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522477907] [2024-01-29 14:11:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:11:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:11:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:11:59,255 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 14:11:59,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:11:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522477907] [2024-01-29 14:11:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522477907] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:11:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:11:59,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:11:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624977237] [2024-01-29 14:11:59,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:11:59,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:11:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:11:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:11:59,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:11:59,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 194 [2024-01-29 14:11:59,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 142 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 14:11:59,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:11:59,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 194 [2024-01-29 14:11:59,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:00,702 INFO L124 PetriNetUnfolderBase]: 8245/18273 cut-off events. [2024-01-29 14:12:00,703 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2024-01-29 14:12:00,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30165 conditions, 18273 events. 8245/18273 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 184492 event pairs, 5317 based on Foata normal form. 2349/16996 useless extension candidates. Maximal degree in co-relation 30149. Up to 7258 conditions per place. [2024-01-29 14:12:00,823 INFO L140 encePairwiseOnDemand]: 182/194 looper letters, 55 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-01-29 14:12:00,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 154 transitions, 448 flow [2024-01-29 14:12:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:12:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:12:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2024-01-29 14:12:00,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7903780068728522 [2024-01-29 14:12:00,825 INFO L175 Difference]: Start difference. First operand has 150 places, 142 transitions, 305 flow. Second operand 3 states and 460 transitions. [2024-01-29 14:12:00,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 154 transitions, 448 flow [2024-01-29 14:12:00,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 154 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:00,829 INFO L231 Difference]: Finished difference. Result has 140 places, 132 transitions, 286 flow [2024-01-29 14:12:00,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2024-01-29 14:12:00,830 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -58 predicate places. [2024-01-29 14:12:00,830 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 286 flow [2024-01-29 14:12:00,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 14:12:00,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:00,831 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-29 14:12:00,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:12:00,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:12:00,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash -998772806, now seen corresponding path program 1 times [2024-01-29 14:12:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238462588] [2024-01-29 14:12:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:00,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-29 14:12:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238462588] [2024-01-29 14:12:01,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238462588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:01,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:01,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833542087] [2024-01-29 14:12:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:01,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:01,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:01,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 194 [2024-01-29 14:12:01,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 14:12:01,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:01,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 194 [2024-01-29 14:12:01,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:12:02,406 INFO L124 PetriNetUnfolderBase]: 7471/19999 cut-off events. [2024-01-29 14:12:02,406 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2024-01-29 14:12:02,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31378 conditions, 19999 events. 7471/19999 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 229666 event pairs, 418 based on Foata normal form. 2700/18779 useless extension candidates. Maximal degree in co-relation 31362. Up to 8937 conditions per place. [2024-01-29 14:12:02,522 INFO L140 encePairwiseOnDemand]: 179/194 looper letters, 72 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-01-29 14:12:02,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 159 transitions, 496 flow [2024-01-29 14:12:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:12:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:12:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2024-01-29 14:12:02,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7770618556701031 [2024-01-29 14:12:02,525 INFO L175 Difference]: Start difference. First operand has 140 places, 132 transitions, 286 flow. Second operand 4 states and 603 transitions. [2024-01-29 14:12:02,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 159 transitions, 496 flow [2024-01-29 14:12:02,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 159 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:12:02,528 INFO L231 Difference]: Finished difference. Result has 128 places, 119 transitions, 260 flow [2024-01-29 14:12:02,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=128, PETRI_TRANSITIONS=119} [2024-01-29 14:12:02,529 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -70 predicate places. [2024-01-29 14:12:02,529 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 119 transitions, 260 flow [2024-01-29 14:12:02,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 14:12:02,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:02,530 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-29 14:12:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 14:12:02,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 118 more)] === [2024-01-29 14:12:02,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash -897243892, now seen corresponding path program 1 times [2024-01-29 14:12:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072931355] [2024-01-29 14:12:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:02,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:12:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:12:02,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:12:02,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:12:02,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 121 remaining) [2024-01-29 14:12:02,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (119 of 121 remaining) [2024-01-29 14:12:02,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (118 of 121 remaining) [2024-01-29 14:12:02,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (117 of 121 remaining) [2024-01-29 14:12:02,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (116 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (115 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (114 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (113 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (112 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (111 of 121 remaining) [2024-01-29 14:12:02,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (110 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (109 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (108 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (107 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (106 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (105 of 121 remaining) [2024-01-29 14:12:02,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (104 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (103 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (102 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (101 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (100 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (99 of 121 remaining) [2024-01-29 14:12:02,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (98 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (97 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (96 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (95 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (94 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (93 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (92 of 121 remaining) [2024-01-29 14:12:02,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (91 of 121 remaining) [2024-01-29 14:12:02,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (90 of 121 remaining) [2024-01-29 14:12:02,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (89 of 121 remaining) [2024-01-29 14:12:02,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (88 of 121 remaining) [2024-01-29 14:12:02,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (87 of 121 remaining) [2024-01-29 14:12:02,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (86 of 121 remaining) [2024-01-29 14:12:02,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (85 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (84 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (83 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (82 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (81 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (80 of 121 remaining) [2024-01-29 14:12:02,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (79 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (78 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (77 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (76 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (75 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (74 of 121 remaining) [2024-01-29 14:12:02,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (73 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (72 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (71 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (70 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (69 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (68 of 121 remaining) [2024-01-29 14:12:02,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (66 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 121 remaining) [2024-01-29 14:12:02,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 121 remaining) [2024-01-29 14:12:02,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 121 remaining) [2024-01-29 14:12:02,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 121 remaining) [2024-01-29 14:12:02,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 121 remaining) [2024-01-29 14:12:02,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (36 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 121 remaining) [2024-01-29 14:12:02,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 121 remaining) [2024-01-29 14:12:02,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 121 remaining) [2024-01-29 14:12:02,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 121 remaining) [2024-01-29 14:12:02,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 121 remaining) [2024-01-29 14:12:02,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 121 remaining) [2024-01-29 14:12:02,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 121 remaining) [2024-01-29 14:12:02,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 121 remaining) [2024-01-29 14:12:02,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 121 remaining) [2024-01-29 14:12:02,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 121 remaining) [2024-01-29 14:12:02,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 121 remaining) [2024-01-29 14:12:02,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 121 remaining) [2024-01-29 14:12:02,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 121 remaining) [2024-01-29 14:12:02,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONERROR_FUNCTION (6 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 121 remaining) [2024-01-29 14:12:02,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 121 remaining) [2024-01-29 14:12:02,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 121 remaining) [2024-01-29 14:12:02,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 121 remaining) [2024-01-29 14:12:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 14:12:02,602 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-29 14:12:02,603 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 14:12:02,603 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-29 14:12:02,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:12:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 257 transitions, 542 flow [2024-01-29 14:12:02,717 INFO L124 PetriNetUnfolderBase]: 4/268 cut-off events. [2024-01-29 14:12:02,718 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-29 14:12:02,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 268 events. 4/268 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1384 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 251. Up to 5 conditions per place. [2024-01-29 14:12:02,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 257 transitions, 542 flow [2024-01-29 14:12:02,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 257 transitions, 542 flow [2024-01-29 14:12:02,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:12:02,732 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;@1f53d055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:12:02,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 151 error locations. [2024-01-29 14:12:02,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:12:02,733 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-29 14:12:02,733 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 14:12:02,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:12:02,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:12:02,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 148 more)] === [2024-01-29 14:12:02,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:12:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash 848810072, now seen corresponding path program 1 times [2024-01-29 14:12:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:12:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463270073] [2024-01-29 14:12:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:12:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:12:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:12:02,785 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 14:12:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:12:02,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463270073] [2024-01-29 14:12:02,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463270073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:12:02,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:12:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:12:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744541424] [2024-01-29 14:12:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:12:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:12:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:12:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:12:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:12:02,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 257 [2024-01-29 14:12:02,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 257 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 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 14:12:02,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:12:02,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 257 [2024-01-29 14:12:02,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand