./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_84-list2_racing2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/goblint-regression/28-race_reach_84-list2_racing2.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_84-list2_racing2.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:54:40,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:40,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:40,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:40,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:40,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:40,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:40,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:40,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:40,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:40,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:40,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:40,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:40,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:40,396 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:40,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:40,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:40,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:40,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:40,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:40,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:40,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:40,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:40,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:40,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:40,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:40,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:40,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:40,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:40,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:40,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:40,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:40,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:40,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:40,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:40,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:40,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:40,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:40,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:40,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:40,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:40,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:40,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:40,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:40,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:40,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:40,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:40,697 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:40,698 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:40,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_84-list2_racing2.yml/witness.yml [2024-02-07 14:54:40,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:40,757 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:40,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2024-02-07 14:54:41,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:42,120 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:42,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2024-02-07 14:54:42,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5992ae3/3e438169953b42979edcd7b57a9ab02a/FLAG2014dab22 [2024-02-07 14:54:42,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5992ae3/3e438169953b42979edcd7b57a9ab02a [2024-02-07 14:54:42,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:42,164 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:42,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:42,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:42,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:42,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:40" (1/2) ... [2024-02-07 14:54:42,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748e3c95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:42, skipping insertion in model container [2024-02-07 14:54:42,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:40" (1/2) ... [2024-02-07 14:54:42,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ebcf28c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:42, skipping insertion in model container [2024-02-07 14:54:42,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:42" (2/2) ... [2024-02-07 14:54:42,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748e3c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42, skipping insertion in model container [2024-02-07 14:54:42,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:42" (2/2) ... [2024-02-07 14:54:42,174 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:42,204 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant after [L1055-L1055] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant after [L1060-L1060] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant before [L1053-L1053] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant before [L1060-L1060] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant after [L1053-L1053] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,205 INFO L76 edCorrectnessWitness]: Location invariant after [L1054-L1054] ((((((((((((((((((((((((i == 21 || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22 [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant after [L1059-L1059] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant before [L1055-L1055] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant before [L1059-L1059] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6 [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant before [L1054-L1054] ((((((((((((((((((((((((i == 21 || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22 [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant before [L1058-L1058] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,206 INFO L76 edCorrectnessWitness]: Location invariant after [L1058-L1058] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:42,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:42,629 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2024-02-07 14:54:42,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:42,682 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:42,711 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:54:42,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:42,832 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:42,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42 WrapperNode [2024-02-07 14:54:42,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:42,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:42,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:42,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:42,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:42,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:42,926 INFO L138 Inliner]: procedures = 280, calls = 98, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 422 [2024-02-07 14:54:42,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:42,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:42,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:42,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:42,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:42,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:42,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,049 INFO L175 MemorySlicer]: Split 56 memory accesses to 9 slices as follows [2, 2, 5, 5, 5, 5, 2, 28, 2]. 50 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 0, 5, 5, 5, 5, 0, 0, 0]. The 17 writes are split as follows [0, 1, 0, 0, 0, 0, 1, 14, 1]. [2024-02-07 14:54:43,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:43,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:43,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:43,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:43,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (1/1) ... [2024-02-07 14:54:43,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:43,151 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) [2024-02-07 14:54:43,188 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 [2024-02-07 14:54:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:54:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:54:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:54:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-02-07 14:54:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-02-07 14:54:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:54:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 14:54:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:54:43,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-02-07 14:54:43,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-02-07 14:54:43,207 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:54:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 14:54:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-02-07 14:54:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-02-07 14:54:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:43,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:43,210 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:54:43,393 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:43,395 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:43,955 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:43,955 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:44,158 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:44,158 INFO L320 CfgBuilder]: Removed 29 assume(true) statements. [2024-02-07 14:54:44,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:44 BoogieIcfgContainer [2024-02-07 14:54:44,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:44,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:44,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:44,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:44,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:40" (1/4) ... [2024-02-07 14:54:44,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a47cb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:44, skipping insertion in model container [2024-02-07 14:54:44,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:42" (2/4) ... [2024-02-07 14:54:44,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a47cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:44, skipping insertion in model container [2024-02-07 14:54:44,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:42" (3/4) ... [2024-02-07 14:54:44,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a47cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:44, skipping insertion in model container [2024-02-07 14:54:44,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:44" (4/4) ... [2024-02-07 14:54:44,165 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2024-02-07 14:54:44,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:44,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-02-07 14:54:44,179 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:44,287 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-02-07 14:54:44,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 161 transitions, 361 flow [2024-02-07 14:54:44,418 INFO L124 PetriNetUnfolderBase]: 136/606 cut-off events. [2024-02-07 14:54:44,419 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-02-07 14:54:44,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 606 events. 136/606 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3680 event pairs, 0 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 313. Up to 16 conditions per place. [2024-02-07 14:54:44,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 161 transitions, 361 flow [2024-02-07 14:54:44,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 161 transitions, 361 flow [2024-02-07 14:54:44,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:44,449 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;@32789e6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:44,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 14:54:44,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:44,455 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:54:44,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:44,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:44,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:44,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 14:54:44,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 993269609, now seen corresponding path program 1 times [2024-02-07 14:54:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:44,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709382280] [2024-02-07 14:54:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:44,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:44,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709382280] [2024-02-07 14:54:44,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709382280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708549299] [2024-02-07 14:54:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:44,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:44,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 161 [2024-02-07 14:54:44,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 161 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-02-07 14:54:44,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:44,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 161 [2024-02-07 14:54:44,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:44,881 INFO L124 PetriNetUnfolderBase]: 15/47 cut-off events. [2024-02-07 14:54:44,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:44,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 47 events. 15/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 90. Up to 33 conditions per place. [2024-02-07 14:54:44,883 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 14 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2024-02-07 14:54:44,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 70 flow [2024-02-07 14:54:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-02-07 14:54:44,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2406832298136646 [2024-02-07 14:54:44,900 INFO L175 Difference]: Start difference. First operand has 129 places, 161 transitions, 361 flow. Second operand 4 states and 155 transitions. [2024-02-07 14:54:44,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 70 flow [2024-02-07 14:54:44,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:44,907 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 30 flow [2024-02-07 14:54:44,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2024-02-07 14:54:44,914 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -110 predicate places. [2024-02-07 14:54:44,915 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 30 flow [2024-02-07 14:54:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-02-07 14:54:44,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:44,916 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:54:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:44,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 14:54:44,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1049389600, now seen corresponding path program 1 times [2024-02-07 14:54:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:44,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449912364] [2024-02-07 14:54:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:44,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:45,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:45,026 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:45,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-07 14:54:45,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2024-02-07 14:54:45,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2024-02-07 14:54:45,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 13 remaining) [2024-02-07 14:54:45,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 13 remaining) [2024-02-07 14:54:45,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-02-07 14:54:45,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 13 remaining) [2024-02-07 14:54:45,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-02-07 14:54:45,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 13 remaining) [2024-02-07 14:54:45,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2024-02-07 14:54:45,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2024-02-07 14:54:45,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2024-02-07 14:54:45,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2024-02-07 14:54:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:54:45,031 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 14:54:45,033 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:54:45,033 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:54:45,132 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-02-07 14:54:45,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 276 transitions, 636 flow [2024-02-07 14:54:45,663 INFO L124 PetriNetUnfolderBase]: 929/3233 cut-off events. [2024-02-07 14:54:45,663 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2024-02-07 14:54:45,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 3233 events. 929/3233 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 26859 event pairs, 22 based on Foata normal form. 0/2373 useless extension candidates. Maximal degree in co-relation 2131. Up to 192 conditions per place. [2024-02-07 14:54:45,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 276 transitions, 636 flow [2024-02-07 14:54:45,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 276 transitions, 636 flow [2024-02-07 14:54:45,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:45,812 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;@32789e6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:45,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-02-07 14:54:45,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:45,817 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:54:45,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:45,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:45,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:45,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 12 more)] === [2024-02-07 14:54:45,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1251031903, now seen corresponding path program 1 times [2024-02-07 14:54:45,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:45,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274247218] [2024-02-07 14:54:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274247218] [2024-02-07 14:54:45,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274247218] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:45,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:45,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:45,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878645902] [2024-02-07 14:54:45,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:45,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:45,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:45,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:45,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 276 [2024-02-07 14:54:45,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 276 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2024-02-07 14:54:45,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:45,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 276 [2024-02-07 14:54:45,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand