./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.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_87-lists_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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_87-lists_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_87-lists_racefree.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.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:07:42,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:07:42,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:07:42,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:07:42,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:07:42,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:07:42,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:07:42,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:07:42,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:07:42,793 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:07:42,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:07:42,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:07:42,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:07:42,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:07:42,795 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:07:42,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:07:42,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:07:42,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:07:42,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:07:42,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:07:42,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:07:42,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:07:42,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:07:42,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:07:42,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:07:42,798 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:07:42,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:07:42,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:07:42,799 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:07:42,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:07:42,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:07:42,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:07:42,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:42,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:07:42,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:07:42,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:07:42,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:07:42,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:07:42,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:07:42,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:07:42,819 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:07:42,819 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:07:42,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:07:42,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:07:43,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:07:43,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:07:43,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:07:43,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:07:43,065 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:07:43,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2024-02-07 19:07:44,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:07:44,657 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:07:44,661 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2024-02-07 19:07:44,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334ef5fe4/de0b3c5ef1254f4cb18908b2ebf3a6c0/FLAG5cebdafa5 [2024-02-07 19:07:44,704 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/334ef5fe4/de0b3c5ef1254f4cb18908b2ebf3a6c0 [2024-02-07 19:07:44,706 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:07:44,707 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:07:44,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_87-lists_racefree.yml/witness.yml [2024-02-07 19:07:44,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:07:44,774 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:07:44,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:44,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:07:44,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:07:44,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:44" (1/2) ... [2024-02-07 19:07:44,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b693295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:44, skipping insertion in model container [2024-02-07 19:07:44,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:44" (1/2) ... [2024-02-07 19:07:44,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73f88a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:44, skipping insertion in model container [2024-02-07 19:07:44,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:44" (2/2) ... [2024-02-07 19:07:44,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b693295 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:44, skipping insertion in model container [2024-02-07 19:07:44,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:44" (2/2) ... [2024-02-07 19:07:44,782 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:07:44,826 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:07:44,827 INFO L76 edCorrectnessWitness]: Location invariant before [L1051-L1051] (((((((((((((((((((((((((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 19:07:44,828 INFO L76 edCorrectnessWitness]: Location invariant after [L1039-L1039] (-255 <= i) && (i <= 255) [2024-02-07 19:07:44,828 INFO L76 edCorrectnessWitness]: Location invariant before [L1047-L1047] (((((((7 <= i && i <= 255) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:07:44,828 INFO L76 edCorrectnessWitness]: Location invariant before [L1033-L1033] (-255 <= i) && (i <= 255) [2024-02-07 19:07:44,828 INFO L76 edCorrectnessWitness]: Location invariant after [L1051-L1051] (((((((((((((((((((((((((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 19:07:44,829 INFO L76 edCorrectnessWitness]: Location invariant before [L1054-L1054] ((((((((((((((((((((((((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) || i == 21) || i == 20) || i == 19 [2024-02-07 19:07:44,829 INFO L76 edCorrectnessWitness]: Location invariant after [L1054-L1054] ((((((((((((((((((((((((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) || i == 21) || i == 20) || i == 19 [2024-02-07 19:07:44,829 INFO L76 edCorrectnessWitness]: Location invariant before [L1038-L1038] (-255 <= i) && (i <= 255) [2024-02-07 19:07:44,829 INFO L76 edCorrectnessWitness]: Location invariant before [L1049-L1049] (((((((7 <= i && i <= 255) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:07:44,829 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 19:07:44,830 INFO L76 edCorrectnessWitness]: Location invariant before [L1052-L1052] ((((((((((((((((((((((((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) || 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 [2024-02-07 19:07:44,830 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 19:07:44,830 INFO L76 edCorrectnessWitness]: Location invariant before [L1032-L1032] (-255 <= i) && (i <= 255) [2024-02-07 19:07:44,830 INFO L76 edCorrectnessWitness]: Location invariant after [L1052-L1052] ((((((((((((((((((((((((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) || 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 [2024-02-07 19:07:44,830 INFO L76 edCorrectnessWitness]: Location invariant before [L1039-L1039] (-255 <= i) && (i <= 255) [2024-02-07 19:07:44,867 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:07:45,148 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_87-lists_racefree.i[47038,47051] [2024-02-07 19:07:45,173 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:45,245 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:07:45,277 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_87-lists_racefree.i[47038,47051] Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:07:45,338 WARN L423 MainDispatcher]: Unable to annotate struct s with a witness entry [2024-02-07 19:07:45,339 WARN L423 MainDispatcher]: Unable to annotate *p = take(buckets[i]) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:07:45,382 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:45,446 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:07:45,447 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45 WrapperNode [2024-02-07 19:07:45,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:45,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:45,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:07:45,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:07:45,453 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 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,472 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 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,510 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 260 [2024-02-07 19:07:45,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:45,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:07:45,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:07:45,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:07:45,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,555 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 4, 5, 2, 1, 2, 14]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0, 0, 0, 0]. The 13 writes are split as follows [0, 0, 2, 0, 1, 1, 1, 8]. [2024-02-07 19:07:45,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:07:45,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:07:45,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:07:45,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:07:45,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (1/1) ... [2024-02-07 19:07:45,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:45,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:45,690 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 19:07:45,759 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 19:07:45,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:07:45,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 19:07:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 19:07:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 19:07:45,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-02-07 19:07:45,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:07:45,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-02-07 19:07:45,777 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 19:07:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 19:07:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:07:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:07:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:07:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:07:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 19:07:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:07:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 19:07:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 19:07:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 19:07:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:07:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-02-07 19:07:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:07:45,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:07:45,784 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 19:07:45,953 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:07:45,955 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:07:46,351 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:07:46,351 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:07:46,611 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:07:46,611 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 19:07:46,611 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:46 BoogieIcfgContainer [2024-02-07 19:07:46,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:07:46,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:07:46,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:07:46,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:07:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:07:44" (1/4) ... [2024-02-07 19:07:46,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c17a0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:46, skipping insertion in model container [2024-02-07 19:07:46,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:44" (2/4) ... [2024-02-07 19:07:46,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c17a0d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:07:46, skipping insertion in model container [2024-02-07 19:07:46,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:45" (3/4) ... [2024-02-07 19:07:46,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c17a0d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:07:46, skipping insertion in model container [2024-02-07 19:07:46,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:46" (4/4) ... [2024-02-07 19:07:46,623 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-02-07 19:07:46,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:07:46,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 19:07:46,641 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:07:46,718 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 19:07:46,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 95 transitions, 210 flow [2024-02-07 19:07:46,827 INFO L124 PetriNetUnfolderBase]: 37/187 cut-off events. [2024-02-07 19:07:46,828 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-07 19:07:46,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 37/187 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 755 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2024-02-07 19:07:46,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 95 transitions, 210 flow [2024-02-07 19:07:46,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 95 transitions, 210 flow [2024-02-07 19:07:46,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:46,864 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;@65c07ffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:46,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-07 19:07:46,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:46,867 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 19:07:46,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:46,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:46,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:46,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:46,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 685057, now seen corresponding path program 1 times [2024-02-07 19:07:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443497725] [2024-02-07 19:07:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:47,116 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 19:07:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443497725] [2024-02-07 19:07:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443497725] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:47,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:47,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:07:47,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761682240] [2024-02-07 19:07:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:47,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 95 [2024-02-07 19:07:47,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 95 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:07:47,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:47,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 95 [2024-02-07 19:07:47,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:48,171 INFO L124 PetriNetUnfolderBase]: 3738/7106 cut-off events. [2024-02-07 19:07:48,171 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-02-07 19:07:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13117 conditions, 7106 events. 3738/7106 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 46045 event pairs, 3497 based on Foata normal form. 596/6732 useless extension candidates. Maximal degree in co-relation 11450. Up to 5916 conditions per place. [2024-02-07 19:07:48,218 INFO L140 encePairwiseOnDemand]: 78/95 looper letters, 60 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-02-07 19:07:48,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 314 flow [2024-02-07 19:07:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-02-07 19:07:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2024-02-07 19:07:48,231 INFO L175 Difference]: Start difference. First operand has 81 places, 95 transitions, 210 flow. Second operand 3 states and 146 transitions. [2024-02-07 19:07:48,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 314 flow [2024-02-07 19:07:48,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:48,244 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 202 flow [2024-02-07 19:07:48,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-02-07 19:07:48,250 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-02-07 19:07:48,254 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 202 flow [2024-02-07 19:07:48,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:07:48,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:48,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 19:07:48,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:07:48,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:48,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1065596233, now seen corresponding path program 1 times [2024-02-07 19:07:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118191606] [2024-02-07 19:07:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:48,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118191606] [2024-02-07 19:07:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118191606] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935581747] [2024-02-07 19:07:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:07:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:07:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:07:48,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 95 [2024-02-07 19:07:48,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 19:07:48,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:48,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 95 [2024-02-07 19:07:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:49,201 INFO L124 PetriNetUnfolderBase]: 3738/7104 cut-off events. [2024-02-07 19:07:49,202 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-02-07 19:07:49,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13122 conditions, 7104 events. 3738/7104 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 46035 event pairs, 3497 based on Foata normal form. 1/6137 useless extension candidates. Maximal degree in co-relation 13105. Up to 5911 conditions per place. [2024-02-07 19:07:49,235 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 57 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2024-02-07 19:07:49,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 322 flow [2024-02-07 19:07:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:07:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:07:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-02-07 19:07:49,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663157894736842 [2024-02-07 19:07:49,241 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 202 flow. Second operand 5 states and 174 transitions. [2024-02-07 19:07:49,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 322 flow [2024-02-07 19:07:49,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:49,244 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 210 flow [2024-02-07 19:07:49,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-02-07 19:07:49,245 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2024-02-07 19:07:49,245 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 210 flow [2024-02-07 19:07:49,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 19:07:49,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:49,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:07:49,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:49,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1072318476, now seen corresponding path program 1 times [2024-02-07 19:07:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192460650] [2024-02-07 19:07:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192460650] [2024-02-07 19:07:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192460650] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461440843] [2024-02-07 19:07:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:49,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:49,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:07:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:49,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:07:49,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:49,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461440843] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:49,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-02-07 19:07:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014386528] [2024-02-07 19:07:49,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:07:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:49,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:07:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:07:49,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 95 [2024-02-07 19:07:49,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:49,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:49,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 95 [2024-02-07 19:07:49,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:50,327 INFO L124 PetriNetUnfolderBase]: 3738/7111 cut-off events. [2024-02-07 19:07:50,328 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-02-07 19:07:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13154 conditions, 7111 events. 3738/7111 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 46012 event pairs, 3497 based on Foata normal form. 3/6146 useless extension candidates. Maximal degree in co-relation 13095. Up to 5912 conditions per place. [2024-02-07 19:07:50,377 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 63 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-02-07 19:07:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 383 flow [2024-02-07 19:07:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:07:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:07:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-02-07 19:07:50,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35789473684210527 [2024-02-07 19:07:50,380 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 210 flow. Second operand 6 states and 204 transitions. [2024-02-07 19:07:50,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 383 flow [2024-02-07 19:07:50,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 369 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-07 19:07:50,385 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 245 flow [2024-02-07 19:07:50,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-02-07 19:07:50,386 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2024-02-07 19:07:50,387 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 245 flow [2024-02-07 19:07:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:07:50,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:50,387 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:50,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:50,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:50,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1342572054, now seen corresponding path program 2 times [2024-02-07 19:07:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357859013] [2024-02-07 19:07:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357859013] [2024-02-07 19:07:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357859013] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114587214] [2024-02-07 19:07:50,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:07:50,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:50,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:50,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:50,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 19:07:50,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 19:07:50,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:07:50,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-07 19:07:50,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-07 19:07:50,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114587214] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 19:07:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-02-07 19:07:50,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926204500] [2024-02-07 19:07:50,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:50,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:50,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-02-07 19:07:50,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 95 [2024-02-07 19:07:50,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 19:07:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:50,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 95 [2024-02-07 19:07:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:51,037 INFO L124 PetriNetUnfolderBase]: 22/79 cut-off events. [2024-02-07 19:07:51,037 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-02-07 19:07:51,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 79 events. 22/79 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 188 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 177. Up to 45 conditions per place. [2024-02-07 19:07:51,038 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-02-07 19:07:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 173 flow [2024-02-07 19:07:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-02-07 19:07:51,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32105263157894737 [2024-02-07 19:07:51,039 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 245 flow. Second operand 4 states and 122 transitions. [2024-02-07 19:07:51,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 173 flow [2024-02-07 19:07:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:51,040 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 107 flow [2024-02-07 19:07:51,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-02-07 19:07:51,040 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -44 predicate places. [2024-02-07 19:07:51,040 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 107 flow [2024-02-07 19:07:51,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 19:07:51,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:51,041 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:51,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-07 19:07:51,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:51,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1342569953, now seen corresponding path program 1 times [2024-02-07 19:07:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26144563] [2024-02-07 19:07:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26144563] [2024-02-07 19:07:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26144563] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094083947] [2024-02-07 19:07:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:51,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:51,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:51,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:51,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 19:07:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:51,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-07 19:07:51,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:51,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094083947] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:51,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-02-07 19:07:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115826566] [2024-02-07 19:07:51,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-07 19:07:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:51,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-07 19:07:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-02-07 19:07:51,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 95 [2024-02-07 19:07:51,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 107 flow. Second operand has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 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 19:07:51,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:51,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 95 [2024-02-07 19:07:51,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:51,753 INFO L124 PetriNetUnfolderBase]: 22/95 cut-off events. [2024-02-07 19:07:51,753 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-02-07 19:07:51,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 95 events. 22/95 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 21 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 266. Up to 57 conditions per place. [2024-02-07 19:07:51,754 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 32 selfloop transitions, 12 changer transitions 0/47 dead transitions. [2024-02-07 19:07:51,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 335 flow [2024-02-07 19:07:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 19:07:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 19:07:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-02-07 19:07:51,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2754385964912281 [2024-02-07 19:07:51,756 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 107 flow. Second operand 12 states and 314 transitions. [2024-02-07 19:07:51,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 335 flow [2024-02-07 19:07:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:51,759 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 221 flow [2024-02-07 19:07:51,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=221, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2024-02-07 19:07:51,761 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -28 predicate places. [2024-02-07 19:07:51,761 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 221 flow [2024-02-07 19:07:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 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 19:07:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:51,762 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:51,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:51,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -397310625, now seen corresponding path program 2 times [2024-02-07 19:07:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902541644] [2024-02-07 19:07:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:52,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902541644] [2024-02-07 19:07:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902541644] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:52,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698339091] [2024-02-07 19:07:52,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:07:52,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:52,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:52,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 19:07:52,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-07 19:07:52,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:07:52,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-07 19:07:52,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-02-07 19:07:52,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698339091] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:52,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-07 19:07:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2024-02-07 19:07:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410046579] [2024-02-07 19:07:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-02-07 19:07:52,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 95 [2024-02-07 19:07:52,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 19:07:52,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 95 [2024-02-07 19:07:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:52,643 INFO L124 PetriNetUnfolderBase]: 22/88 cut-off events. [2024-02-07 19:07:52,644 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-02-07 19:07:52,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 88 events. 22/88 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 279. Up to 49 conditions per place. [2024-02-07 19:07:52,644 INFO L140 encePairwiseOnDemand]: 92/95 looper letters, 26 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-02-07 19:07:52,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 278 flow [2024-02-07 19:07:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-02-07 19:07:52,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.312280701754386 [2024-02-07 19:07:52,646 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 221 flow. Second operand 3 states and 89 transitions. [2024-02-07 19:07:52,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 278 flow [2024-02-07 19:07:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 32 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:07:52,649 INFO L231 Difference]: Finished difference. Result has 50 places, 29 transitions, 213 flow [2024-02-07 19:07:52,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2024-02-07 19:07:52,651 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -31 predicate places. [2024-02-07 19:07:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 213 flow [2024-02-07 19:07:52,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 19:07:52,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:52,652 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:52,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:52,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:52,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:52,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash 434583211, now seen corresponding path program 1 times [2024-02-07 19:07:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:52,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678474963] [2024-02-07 19:07:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678474963] [2024-02-07 19:07:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678474963] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199527269] [2024-02-07 19:07:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:53,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:53,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:53,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-07 19:07:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:53,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-07 19:07:53,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:53,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199527269] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:53,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-02-07 19:07:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689553252] [2024-02-07 19:07:53,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:53,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-07 19:07:53,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-07 19:07:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-02-07 19:07:53,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 95 [2024-02-07 19:07:53,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 213 flow. Second operand has 24 states, 24 states have (on average 24.833333333333332) internal successors, (596), 24 states have internal predecessors, (596), 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 19:07:53,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:53,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 95 [2024-02-07 19:07:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:53,988 INFO L124 PetriNetUnfolderBase]: 22/126 cut-off events. [2024-02-07 19:07:53,988 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-02-07 19:07:53,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 126 events. 22/126 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 21 based on Foata normal form. 12/138 useless extension candidates. Maximal degree in co-relation 497. Up to 57 conditions per place. [2024-02-07 19:07:53,989 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 56 selfloop transitions, 24 changer transitions 0/81 dead transitions. [2024-02-07 19:07:53,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 796 flow [2024-02-07 19:07:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-07 19:07:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-07 19:07:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 620 transitions. [2024-02-07 19:07:54,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2719298245614035 [2024-02-07 19:07:54,003 INFO L175 Difference]: Start difference. First operand has 50 places, 29 transitions, 213 flow. Second operand 24 states and 620 transitions. [2024-02-07 19:07:54,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 796 flow [2024-02-07 19:07:54,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 795 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:54,006 INFO L231 Difference]: Finished difference. Result has 85 places, 42 transitions, 483 flow [2024-02-07 19:07:54,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=483, PETRI_PLACES=85, PETRI_TRANSITIONS=42} [2024-02-07 19:07:54,007 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2024-02-07 19:07:54,007 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 42 transitions, 483 flow [2024-02-07 19:07:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.833333333333332) internal successors, (596), 24 states have internal predecessors, (596), 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 19:07:54,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:54,008 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:54,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:54,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:54,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:54,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:54,223 INFO L85 PathProgramCache]: Analyzing trace with hash 712486187, now seen corresponding path program 2 times [2024-02-07 19:07:54,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:54,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042225513] [2024-02-07 19:07:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042225513] [2024-02-07 19:07:55,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042225513] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:07:55,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77633390] [2024-02-07 19:07:55,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:07:55,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:55,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:55,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:55,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-07 19:07:55,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:07:55,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:07:55,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 24 conjunts are in the unsatisfiable core [2024-02-07 19:07:55,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:55,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:07:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77633390] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:56,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:07:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-02-07 19:07:56,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804254002] [2024-02-07 19:07:56,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-02-07 19:07:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-02-07 19:07:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-02-07 19:07:56,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 95 [2024-02-07 19:07:56,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 42 transitions, 483 flow. Second operand has 48 states, 48 states have (on average 24.916666666666668) internal successors, (1196), 48 states have internal predecessors, (1196), 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 19:07:56,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:56,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 95 [2024-02-07 19:07:56,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:56,731 INFO L124 PetriNetUnfolderBase]: 22/197 cut-off events. [2024-02-07 19:07:56,731 INFO L125 PetriNetUnfolderBase]: For 5013/5013 co-relation queries the response was YES. [2024-02-07 19:07:56,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 197 events. 22/197 cut-off events. For 5013/5013 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 21 based on Foata normal form. 24/221 useless extension candidates. Maximal degree in co-relation 1062. Up to 57 conditions per place. [2024-02-07 19:07:56,733 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 104 selfloop transitions, 48 changer transitions 0/153 dead transitions. [2024-02-07 19:07:56,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 1927 flow [2024-02-07 19:07:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-02-07 19:07:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-02-07 19:07:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1232 transitions. [2024-02-07 19:07:56,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27017543859649124 [2024-02-07 19:07:56,739 INFO L175 Difference]: Start difference. First operand has 85 places, 42 transitions, 483 flow. Second operand 48 states and 1232 transitions. [2024-02-07 19:07:56,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 1927 flow [2024-02-07 19:07:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 153 transitions, 1909 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-07 19:07:56,749 INFO L231 Difference]: Finished difference. Result has 148 places, 67 transitions, 1088 flow [2024-02-07 19:07:56,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1088, PETRI_PLACES=148, PETRI_TRANSITIONS=67} [2024-02-07 19:07:56,749 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 67 predicate places. [2024-02-07 19:07:56,750 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 67 transitions, 1088 flow [2024-02-07 19:07:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 24.916666666666668) internal successors, (1196), 48 states have internal predecessors, (1196), 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 19:07:56,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:56,750 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 46, 46, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:56,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:56,966 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 19:07:56,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1701632555, now seen corresponding path program 3 times [2024-02-07 19:07:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498583788] [2024-02-07 19:07:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:56,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:08:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:00,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498583788] [2024-02-07 19:08:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498583788] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:08:00,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463909532] [2024-02-07 19:08:00,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 19:08:00,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:00,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:08:00,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15