./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c --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/test-hard1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/weaver/test-hard1.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-hard1.wvr.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:12:12,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:12:12,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:12:12,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:12:12,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:12:12,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:12:12,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:12:12,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:12:12,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:12:12,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:12:12,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:12:12,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:12:12,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:12:12,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:12:12,843 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:12:12,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:12:12,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:12:12,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:12:12,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:12:12,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:12:12,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:12:12,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:12:12,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:12:12,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:12:12,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:12:12,845 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:12:12,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:12:12,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:12:12,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:12:12,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:12:12,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:12:12,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:12:12,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:12:12,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:12:12,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:12:12,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:12:12,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:12:12,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:12:12,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:12:12,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:12:12,848 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:12:12,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:12:12,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:12:12,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:12:13,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:12:13,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:12:13,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:12:13,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:12:13,096 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:12:13,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-01-31 16:12:14,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:12:14,252 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:12:14,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-01-31 16:12:14,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610e15919/2c896a4dc06946c5b682efc2a801c4ec/FLAG7ec2ff146 [2024-01-31 16:12:14,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610e15919/2c896a4dc06946c5b682efc2a801c4ec [2024-01-31 16:12:14,277 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:12:14,279 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:12:14,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml [2024-01-31 16:12:14,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:12:14,403 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:12:14,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:12:14,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:12:14,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:12:14,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:12:14" (1/2) ... [2024-01-31 16:12:14,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42120189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:12:14, skipping insertion in model container [2024-01-31 16:12:14,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:12:14" (1/2) ... [2024-01-31 16:12:14,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3387cdd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:12:14, skipping insertion in model container [2024-01-31 16:12:14,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:14" (2/2) ... [2024-01-31 16:12:14,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42120189 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14, skipping insertion in model container [2024-01-31 16:12:14,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:14" (2/2) ... [2024-01-31 16:12:14,414 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:12:14,449 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:12:14,450 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,450 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (n2 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:12:14,450 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (n1 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:12:14,451 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,451 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L46] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,451 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,451 INFO L98 nessWitnessExtractor]: Location invariant after [L63-L63] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L87-L87] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L123-L123] ((m == 0U) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-31 16:12:14,452 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Location invariant after [L101-L101] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Loop invariant at [L65-L65] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Location invariant before [L125-L125] m == 0U [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Loop invariant at [L103-L103] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,453 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (n1 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:12:14,454 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,454 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-31 16:12:14,454 INFO L98 nessWitnessExtractor]: Location invariant before [L121-L121] ((((p1 == 0U) && (p2 == 0U)) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:12:14,454 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,454 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (((p2 == 0U) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant after [L44-L44] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-01-31 16:12:14,455 INFO L98 nessWitnessExtractor]: Location invariant after [L82-L82] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,456 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] (n2 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:12:14,456 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,456 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,456 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-31 16:12:14,457 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,457 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,457 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L124-L124] (m == 0U) && (n2 == 0) [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,458 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Loop invariant at [L84-L84] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,459 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-01-31 16:12:14,460 INFO L98 nessWitnessExtractor]: Location invariant before [L105-L105] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,460 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,460 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,461 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,461 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,461 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,461 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-01-31 16:12:14,481 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:12:14,597 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-01-31 16:12:14,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:12:14,607 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:12:14,632 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:12:14,633 WARN L424 MainDispatcher]: Unable to annotate cond = n1 > 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 [2024-01-31 16:12:14,639 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:12:14,639 WARN L424 MainDispatcher]: Unable to annotate cond = n1 > 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 [2024-01-31 16:12:14,646 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:12:14,646 WARN L424 MainDispatcher]: Unable to annotate cond = n2 > 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 [2024-01-31 16:12:14,652 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:12:14,653 WARN L424 MainDispatcher]: Unable to annotate cond = n2 > 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 [2024-01-31 16:12:14,664 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-01-31 16:12:14,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:12:14,675 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:12:14,675 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14 WrapperNode [2024-01-31 16:12:14,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:12:14,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:12:14,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:12:14,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:12:14,682 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 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,688 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 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,706 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2024-01-31 16:12:14,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:12:14,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:12:14,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:12:14,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:12:14,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,736 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 16:12:14,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:12:14,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:12:14,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:12:14,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:12:14,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (1/1) ... [2024-01-31 16:12:14,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:12:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:12:14,795 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) [2024-01-31 16:12:14,799 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 [2024-01-31 16:12:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:12:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:12:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:12:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:12:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:12:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:12:14,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:12:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:12:14,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:12:14,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:12:14,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:12:14,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:12:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:12:14,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:12:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:12:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:12:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:12:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:12:14,854 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:12:14,950 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:12:14,952 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:12:15,233 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:12:15,233 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:12:15,420 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:12:15,420 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 16:12:15,422 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:12:15 BoogieIcfgContainer [2024-01-31 16:12:15,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:12:15,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:12:15,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:12:15,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:12:15,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:12:14" (1/4) ... [2024-01-31 16:12:15,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f60c62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:12:15, skipping insertion in model container [2024-01-31 16:12:15,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:12:14" (2/4) ... [2024-01-31 16:12:15,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f60c62f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:12:15, skipping insertion in model container [2024-01-31 16:12:15,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:12:14" (3/4) ... [2024-01-31 16:12:15,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f60c62f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:12:15, skipping insertion in model container [2024-01-31 16:12:15,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:12:15" (4/4) ... [2024-01-31 16:12:15,431 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-01-31 16:12:15,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:12:15,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-01-31 16:12:15,444 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:12:15,524 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:12:15,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 129 transitions, 286 flow [2024-01-31 16:12:15,604 INFO L124 PetriNetUnfolderBase]: 8/125 cut-off events. [2024-01-31 16:12:15,608 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:12:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 8/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 476 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2024-01-31 16:12:15,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 129 transitions, 286 flow [2024-01-31 16:12:15,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 272 flow [2024-01-31 16:12:15,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:12:15,632 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;@71a91c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:12:15,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 106 error locations. [2024-01-31 16:12:15,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:12:15,634 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:12:15,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:15,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:15,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:12:15,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:15,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 18789, now seen corresponding path program 1 times [2024-01-31 16:12:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:15,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856286861] [2024-01-31 16:12:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856286861] [2024-01-31 16:12:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856286861] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:16,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:12:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130284556] [2024-01-31 16:12:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:16,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:12:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:12:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:12:16,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2024-01-31 16:12:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-31 16:12:16,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:16,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2024-01-31 16:12:16,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:20,131 INFO L124 PetriNetUnfolderBase]: 35361/52922 cut-off events. [2024-01-31 16:12:20,131 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-01-31 16:12:20,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100584 conditions, 52922 events. 35361/52922 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 3203. Compared 459702 event pairs, 30429 based on Foata normal form. 4932/32374 useless extension candidates. Maximal degree in co-relation 90940. Up to 45901 conditions per place. [2024-01-31 16:12:20,704 INFO L140 encePairwiseOnDemand]: 110/129 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-01-31 16:12:20,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 354 flow [2024-01-31 16:12:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-01-31 16:12:20,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-01-31 16:12:20,716 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 272 flow. Second operand 3 states and 234 transitions. [2024-01-31 16:12:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 354 flow [2024-01-31 16:12:21,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 338 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:12:21,108 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 226 flow [2024-01-31 16:12:21,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=108, 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=3, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2024-01-31 16:12:21,112 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -19 predicate places. [2024-01-31 16:12:21,112 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 226 flow [2024-01-31 16:12:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-31 16:12:21,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:21,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:12:21,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:12:21,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:21,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 583071, now seen corresponding path program 1 times [2024-01-31 16:12:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063275839] [2024-01-31 16:12:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063275839] [2024-01-31 16:12:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063275839] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:21,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301413257] [2024-01-31 16:12:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:21,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:21,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:21,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2024-01-31 16:12:21,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-31 16:12:21,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:21,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2024-01-31 16:12:21,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:24,480 INFO L124 PetriNetUnfolderBase]: 35361/52921 cut-off events. [2024-01-31 16:12:24,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:24,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99411 conditions, 52921 events. 35361/52921 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3203. Compared 459386 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99402. Up to 45897 conditions per place. [2024-01-31 16:12:24,780 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 54 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-01-31 16:12:24,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 106 transitions, 338 flow [2024-01-31 16:12:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-01-31 16:12:24,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-01-31 16:12:24,787 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 226 flow. Second operand 4 states and 274 transitions. [2024-01-31 16:12:24,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 106 transitions, 338 flow [2024-01-31 16:12:24,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:24,789 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 226 flow [2024-01-31 16:12:24,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2024-01-31 16:12:24,790 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -19 predicate places. [2024-01-31 16:12:24,790 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 226 flow [2024-01-31 16:12:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-31 16:12:24,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:24,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:12:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:12:24,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:24,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 18075782, now seen corresponding path program 1 times [2024-01-31 16:12:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:24,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823374968] [2024-01-31 16:12:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:24,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823374968] [2024-01-31 16:12:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823374968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:24,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962492343] [2024-01-31 16:12:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:24,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 129 [2024-01-31 16:12:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 129 [2024-01-31 16:12:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:27,974 INFO L124 PetriNetUnfolderBase]: 35361/52920 cut-off events. [2024-01-31 16:12:27,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:28,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99410 conditions, 52920 events. 35361/52920 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 460113 event pairs, 30429 based on Foata normal form. 1/27443 useless extension candidates. Maximal degree in co-relation 99396. Up to 45897 conditions per place. [2024-01-31 16:12:28,283 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 54 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-01-31 16:12:28,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 336 flow [2024-01-31 16:12:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2024-01-31 16:12:28,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-01-31 16:12:28,285 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 226 flow. Second operand 3 states and 222 transitions. [2024-01-31 16:12:28,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 336 flow [2024-01-31 16:12:28,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:12:28,289 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 222 flow [2024-01-31 16:12:28,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-01-31 16:12:28,289 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -21 predicate places. [2024-01-31 16:12:28,290 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 222 flow [2024-01-31 16:12:28,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:12:28,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:28,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:12:28,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:12:28,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:28,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 560349873, now seen corresponding path program 1 times [2024-01-31 16:12:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:28,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261437168] [2024-01-31 16:12:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:28,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261437168] [2024-01-31 16:12:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261437168] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:28,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414379764] [2024-01-31 16:12:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:28,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2024-01-31 16:12:28,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-01-31 16:12:28,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:28,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2024-01-31 16:12:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:31,428 INFO L124 PetriNetUnfolderBase]: 35361/52919 cut-off events. [2024-01-31 16:12:31,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99407 conditions, 52919 events. 35361/52919 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 459815 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99394. Up to 45895 conditions per place. [2024-01-31 16:12:31,764 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 53 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-01-31 16:12:31,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 330 flow [2024-01-31 16:12:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-01-31 16:12:31,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788113695090439 [2024-01-31 16:12:31,766 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 3 states and 224 transitions. [2024-01-31 16:12:31,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 330 flow [2024-01-31 16:12:31,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:31,768 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 220 flow [2024-01-31 16:12:31,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2024-01-31 16:12:31,770 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -22 predicate places. [2024-01-31 16:12:31,770 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 220 flow [2024-01-31 16:12:31,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-01-31 16:12:31,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:31,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:12:31,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:12:31,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:31,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash 190977516, now seen corresponding path program 1 times [2024-01-31 16:12:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283544185] [2024-01-31 16:12:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283544185] [2024-01-31 16:12:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283544185] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:31,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:12:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805053301] [2024-01-31 16:12:31,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:31,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:12:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:12:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:12:31,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 129 [2024-01-31 16:12:31,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2024-01-31 16:12:31,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:31,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 129 [2024-01-31 16:12:31,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:34,891 INFO L124 PetriNetUnfolderBase]: 35361/52918 cut-off events. [2024-01-31 16:12:34,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:12:34,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99405 conditions, 52918 events. 35361/52918 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 459715 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99390. Up to 45893 conditions per place. [2024-01-31 16:12:35,391 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 52 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-01-31 16:12:35,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 326 flow [2024-01-31 16:12:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2024-01-31 16:12:35,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839793281653747 [2024-01-31 16:12:35,392 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 220 flow. Second operand 3 states and 226 transitions. [2024-01-31 16:12:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 326 flow [2024-01-31 16:12:35,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:35,394 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 218 flow [2024-01-31 16:12:35,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-01-31 16:12:35,395 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -23 predicate places. [2024-01-31 16:12:35,395 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 218 flow [2024-01-31 16:12:35,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2024-01-31 16:12:35,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:35,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:12:35,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:35,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1419719713, now seen corresponding path program 1 times [2024-01-31 16:12:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:35,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319177764] [2024-01-31 16:12:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:35,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319177764] [2024-01-31 16:12:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319177764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:35,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:35,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:35,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998196813] [2024-01-31 16:12:35,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:35,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:35,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:35,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-01-31 16:12:35,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-01-31 16:12:35,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:35,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-01-31 16:12:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:37,860 INFO L124 PetriNetUnfolderBase]: 27357/42970 cut-off events. [2024-01-31 16:12:37,860 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-01-31 16:12:37,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78967 conditions, 42970 events. 27357/42970 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2550. Compared 380206 event pairs, 8245 based on Foata normal form. 4680/30834 useless extension candidates. Maximal degree in co-relation 78950. Up to 31544 conditions per place. [2024-01-31 16:12:38,078 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 81 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-01-31 16:12:38,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 433 flow [2024-01-31 16:12:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-01-31 16:12:38,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794573643410853 [2024-01-31 16:12:38,080 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 218 flow. Second operand 4 states and 299 transitions. [2024-01-31 16:12:38,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 433 flow [2024-01-31 16:12:38,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:38,082 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 202 flow [2024-01-31 16:12:38,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2024-01-31 16:12:38,083 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -30 predicate places. [2024-01-31 16:12:38,083 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 202 flow [2024-01-31 16:12:38,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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) [2024-01-31 16:12:38,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:38,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:12:38,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1446775725, now seen corresponding path program 1 times [2024-01-31 16:12:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314005063] [2024-01-31 16:12:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:38,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314005063] [2024-01-31 16:12:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314005063] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:38,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:38,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:38,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775902762] [2024-01-31 16:12:38,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:38,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:38,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-01-31 16:12:38,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-31 16:12:38,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:38,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-01-31 16:12:38,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:39,892 INFO L124 PetriNetUnfolderBase]: 17587/28947 cut-off events. [2024-01-31 16:12:39,892 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-01-31 16:12:39,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52125 conditions, 28947 events. 17587/28947 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 252764 event pairs, 7585 based on Foata normal form. 3432/22608 useless extension candidates. Maximal degree in co-relation 52104. Up to 19986 conditions per place. [2024-01-31 16:12:40,017 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 80 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-01-31 16:12:40,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 419 flow [2024-01-31 16:12:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2024-01-31 16:12:40,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-01-31 16:12:40,018 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 202 flow. Second operand 4 states and 298 transitions. [2024-01-31 16:12:40,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 419 flow [2024-01-31 16:12:40,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 120 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:40,021 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 187 flow [2024-01-31 16:12:40,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-01-31 16:12:40,021 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -37 predicate places. [2024-01-31 16:12:40,021 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 187 flow [2024-01-31 16:12:40,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-31 16:12:40,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:40,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:12:40,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:40,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1221115866, now seen corresponding path program 1 times [2024-01-31 16:12:40,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:40,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263939967] [2024-01-31 16:12:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:40,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:40,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:40,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263939967] [2024-01-31 16:12:40,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263939967] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:40,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:40,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:40,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770521220] [2024-01-31 16:12:40,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:40,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:40,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-01-31 16:12:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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) [2024-01-31 16:12:40,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:40,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-01-31 16:12:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:41,062 INFO L124 PetriNetUnfolderBase]: 11059/16746 cut-off events. [2024-01-31 16:12:41,062 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-01-31 16:12:41,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31360 conditions, 16746 events. 11059/16746 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 119553 event pairs, 4079 based on Foata normal form. 2184/14667 useless extension candidates. Maximal degree in co-relation 31340. Up to 12420 conditions per place. [2024-01-31 16:12:41,128 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 79 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-01-31 16:12:41,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 406 flow [2024-01-31 16:12:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-01-31 16:12:41,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372 [2024-01-31 16:12:41,129 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 187 flow. Second operand 4 states and 297 transitions. [2024-01-31 16:12:41,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 406 flow [2024-01-31 16:12:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:41,131 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 172 flow [2024-01-31 16:12:41,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-01-31 16:12:41,132 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -44 predicate places. [2024-01-31 16:12:41,132 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 172 flow [2024-01-31 16:12:41,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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) [2024-01-31 16:12:41,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:41,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:41,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:12:41,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:41,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2073926865, now seen corresponding path program 1 times [2024-01-31 16:12:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968294355] [2024-01-31 16:12:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:41,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:41,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968294355] [2024-01-31 16:12:41,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968294355] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:41,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:41,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704197600] [2024-01-31 16:12:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:41,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 129 [2024-01-31 16:12:41,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-01-31 16:12:41,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:41,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 129 [2024-01-31 16:12:41,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:42,194 INFO L124 PetriNetUnfolderBase]: 12459/17504 cut-off events. [2024-01-31 16:12:42,195 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-01-31 16:12:42,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34362 conditions, 17504 events. 12459/17504 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 118036 event pairs, 1739 based on Foata normal form. 0/14111 useless extension candidates. Maximal degree in co-relation 30409. Up to 13320 conditions per place. [2024-01-31 16:12:42,283 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 70 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-01-31 16:12:42,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 365 flow [2024-01-31 16:12:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-01-31 16:12:42,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-01-31 16:12:42,285 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 172 flow. Second operand 4 states and 267 transitions. [2024-01-31 16:12:42,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 365 flow [2024-01-31 16:12:42,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:42,287 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 169 flow [2024-01-31 16:12:42,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-01-31 16:12:42,288 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -45 predicate places. [2024-01-31 16:12:42,288 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 169 flow [2024-01-31 16:12:42,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-01-31 16:12:42,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:42,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:12:42,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:42,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash -968494454, now seen corresponding path program 1 times [2024-01-31 16:12:42,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904722273] [2024-01-31 16:12:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:42,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904722273] [2024-01-31 16:12:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904722273] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887404779] [2024-01-31 16:12:42,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:42,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:42,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:42,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:42,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-01-31 16:12:42,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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) [2024-01-31 16:12:42,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:42,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-01-31 16:12:42,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:42,809 INFO L124 PetriNetUnfolderBase]: 4765/7665 cut-off events. [2024-01-31 16:12:42,809 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-01-31 16:12:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14037 conditions, 7665 events. 4765/7665 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 54245 event pairs, 343 based on Foata normal form. 848/7665 useless extension candidates. Maximal degree in co-relation 14016. Up to 4784 conditions per place. [2024-01-31 16:12:42,839 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 72 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-01-31 16:12:42,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 370 flow [2024-01-31 16:12:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2024-01-31 16:12:42,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562015503875969 [2024-01-31 16:12:42,840 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 169 flow. Second operand 4 states and 290 transitions. [2024-01-31 16:12:42,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 370 flow [2024-01-31 16:12:42,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:42,842 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 154 flow [2024-01-31 16:12:42,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-01-31 16:12:42,842 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -52 predicate places. [2024-01-31 16:12:42,843 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 154 flow [2024-01-31 16:12:42,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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) [2024-01-31 16:12:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:42,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:12:42,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:42,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -745361126, now seen corresponding path program 1 times [2024-01-31 16:12:42,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:42,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736266550] [2024-01-31 16:12:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:42,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736266550] [2024-01-31 16:12:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736266550] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:42,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:42,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924310165] [2024-01-31 16:12:42,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:12:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:42,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:12:42,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:12:42,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 129 [2024-01-31 16:12:42,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-01-31 16:12:42,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:42,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 129 [2024-01-31 16:12:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:43,347 INFO L124 PetriNetUnfolderBase]: 5985/8501 cut-off events. [2024-01-31 16:12:43,348 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-01-31 16:12:43,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16892 conditions, 8501 events. 5985/8501 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 52534 event pairs, 907 based on Foata normal form. 0/7929 useless extension candidates. Maximal degree in co-relation 16872. Up to 6210 conditions per place. [2024-01-31 16:12:43,382 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 60 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-01-31 16:12:43,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 317 flow [2024-01-31 16:12:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:12:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:12:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-01-31 16:12:43,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49806201550387597 [2024-01-31 16:12:43,383 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 154 flow. Second operand 4 states and 257 transitions. [2024-01-31 16:12:43,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 317 flow [2024-01-31 16:12:43,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:43,386 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 151 flow [2024-01-31 16:12:43,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-01-31 16:12:43,386 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -53 predicate places. [2024-01-31 16:12:43,386 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 151 flow [2024-01-31 16:12:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-01-31 16:12:43,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:43,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:12:43,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:43,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -480796110, now seen corresponding path program 1 times [2024-01-31 16:12:43,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:43,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949988927] [2024-01-31 16:12:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949988927] [2024-01-31 16:12:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949988927] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:43,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:43,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:12:43,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819365357] [2024-01-31 16:12:43,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:43,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:12:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:43,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:12:43,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:12:43,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 129 [2024-01-31 16:12:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2024-01-31 16:12:43,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:43,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 129 [2024-01-31 16:12:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:43,785 INFO L124 PetriNetUnfolderBase]: 3661/6063 cut-off events. [2024-01-31 16:12:43,785 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-01-31 16:12:43,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11066 conditions, 6063 events. 3661/6063 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39859 event pairs, 656 based on Foata normal form. 1/5710 useless extension candidates. Maximal degree in co-relation 11045. Up to 3884 conditions per place. [2024-01-31 16:12:43,808 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 56 selfloop transitions, 7 changer transitions 1/93 dead transitions. [2024-01-31 16:12:43,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 338 flow [2024-01-31 16:12:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:12:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:12:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-01-31 16:12:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175710594315246 [2024-01-31 16:12:43,810 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 151 flow. Second operand 3 states and 239 transitions. [2024-01-31 16:12:43,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 338 flow [2024-01-31 16:12:43,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:12:43,811 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 187 flow [2024-01-31 16:12:43,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-01-31 16:12:43,811 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -52 predicate places. [2024-01-31 16:12:43,812 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 187 flow [2024-01-31 16:12:43,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2024-01-31 16:12:43,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:43,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:12:43,812 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2145642083, now seen corresponding path program 1 times [2024-01-31 16:12:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587007634] [2024-01-31 16:12:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:44,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587007634] [2024-01-31 16:12:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587007634] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:12:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036274629] [2024-01-31 16:12:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:12:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:12:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:12:44,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 129 [2024-01-31 16:12:44,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2024-01-31 16:12:44,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:44,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 129 [2024-01-31 16:12:44,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:12:45,295 INFO L124 PetriNetUnfolderBase]: 13110/19673 cut-off events. [2024-01-31 16:12:45,295 INFO L125 PetriNetUnfolderBase]: For 3427/3427 co-relation queries the response was YES. [2024-01-31 16:12:45,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42111 conditions, 19673 events. 13110/19673 cut-off events. For 3427/3427 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 141309 event pairs, 2902 based on Foata normal form. 0/18378 useless extension candidates. Maximal degree in co-relation 42086. Up to 5931 conditions per place. [2024-01-31 16:12:45,409 INFO L140 encePairwiseOnDemand]: 120/129 looper letters, 141 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2024-01-31 16:12:45,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 823 flow [2024-01-31 16:12:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:12:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:12:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2024-01-31 16:12:45,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085271317829457 [2024-01-31 16:12:45,411 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 187 flow. Second operand 6 states and 471 transitions. [2024-01-31 16:12:45,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 823 flow [2024-01-31 16:12:45,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 184 transitions, 802 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:12:45,417 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 326 flow [2024-01-31 16:12:45,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-01-31 16:12:45,418 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -43 predicate places. [2024-01-31 16:12:45,418 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 326 flow [2024-01-31 16:12:45,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2024-01-31 16:12:45,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:12:45,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:12:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:12:45,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-01-31 16:12:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:12:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash -168529523, now seen corresponding path program 2 times [2024-01-31 16:12:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:12:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933436366] [2024-01-31 16:12:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:12:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:12:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:12:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:12:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:12:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933436366] [2024-01-31 16:12:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933436366] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:12:45,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:12:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:12:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955523757] [2024-01-31 16:12:45,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:12:45,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:12:45,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:12:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:12:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:12:45,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2024-01-31 16:12:45,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 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) [2024-01-31 16:12:45,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:12:45,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2024-01-31 16:12:45,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand