./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:36:59,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:36:59,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:36:59,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:36:59,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:36:59,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:36:59,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:36:59,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:36:59,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:36:59,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:36:59,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:36:59,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:36:59,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:36:59,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:36:59,769 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:36:59,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:36:59,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:36:59,772 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:36:59,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:36:59,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:36:59,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:36:59,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:36:59,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:36:59,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:36:59,775 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:36:59,775 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:36:59,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:36:59,775 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:36:59,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:36:59,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:36:59,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:36:59,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:36:59,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:36:59,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:36:59,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:36:59,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:36:59,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:36:59,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:36:59,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:37:00,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:37:00,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:37:00,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:37:00,024 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:37:00,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-02-02 09:37:01,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:37:01,447 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:37:01,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-02-02 09:37:01,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7901fe9/4cee354b38724c5abc75b5320055de06/FLAGd0aedeff6 [2024-02-02 09:37:01,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7901fe9/4cee354b38724c5abc75b5320055de06 [2024-02-02 09:37:01,475 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:37:01,476 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:37:01,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml [2024-02-02 09:37:01,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:37:01,683 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:37:01,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:01,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:37:01,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:37:01,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:01,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef1c2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:01, skipping insertion in model container [2024-02-02 09:37:01,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:01,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@113da430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:01, skipping insertion in model container [2024-02-02 09:37:01,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (2/2) ... [2024-02-02 09:37:01,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef1c2d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:01, skipping insertion in model container [2024-02-02 09:37:01,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (2/2) ... [2024-02-02 09:37:01,693 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:37:01,763 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:37:01,764 INFO L101 nessWitnessExtractor]: Location invariant before [L137-L137] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,765 INFO L101 nessWitnessExtractor]: Location invariant before [L110-L110] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,765 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L65] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,765 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,765 INFO L101 nessWitnessExtractor]: Location invariant before [L108-L108] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L158-L158] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L119-L119] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L132-L132] ((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,766 INFO L101 nessWitnessExtractor]: Location invariant before [L165-L165] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Loop invariant at [L72-L84] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L101-L101] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,767 INFO L101 nessWitnessExtractor]: Location invariant before [L136-L136] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,768 INFO L101 nessWitnessExtractor]: Location invariant before [L169-L169] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-02-02 09:37:01,768 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,768 INFO L101 nessWitnessExtractor]: Location invariant before [L122-L122] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,768 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,768 INFO L101 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (total == 0) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L161-L161] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L117-L117] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L163-L163] (((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-02-02 09:37:01,769 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Loop invariant at [L162-L164] ((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Location invariant before [L114-L114] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,770 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,771 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,771 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L135-L135] (((((q1 == 0) && (q2 == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Location invariant before [L170-L170] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-02-02 09:37:01,772 INFO L101 nessWitnessExtractor]: Loop invariant at [L111-L120] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,773 INFO L101 nessWitnessExtractor]: Loop invariant at [L93-L102] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,773 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,773 INFO L101 nessWitnessExtractor]: Location invariant before [L130-L130] ((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-02-02 09:37:01,773 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,773 INFO L101 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,774 INFO L101 nessWitnessExtractor]: Location invariant before [L133-L133] (((((((q1 == 0) && (q2 == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,774 INFO L101 nessWitnessExtractor]: Location invariant before [L131-L131] (((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-02-02 09:37:01,774 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,774 INFO L101 nessWitnessExtractor]: Location invariant before [L99-L99] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,775 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,775 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,775 INFO L101 nessWitnessExtractor]: Location invariant before [L90-L90] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,775 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L63] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L171-L171] (0 <= i) && (0 <= j) [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L139-L139] (((-2147483647 <= C) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,776 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L96-L96] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L115-L115] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L22-L25] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L113-L113] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L116-L116] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,777 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-02-02 09:37:01,778 INFO L101 nessWitnessExtractor]: Location invariant before [L128-L128] ((((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (C == 0)) && (total == 0) [2024-02-02 09:37:01,778 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,778 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:01,778 INFO L101 nessWitnessExtractor]: Location invariant before [L134-L134] ((((((q1 == 0) && (q2 == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:01,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:37:01,964 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-02-02 09:37:01,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:01,993 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:37:02,013 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:02,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:02,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:02,121 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:37:02,122 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02 WrapperNode [2024-02-02 09:37:02,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:02,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:02,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:37:02,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:37:02,128 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 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,151 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 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,198 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 414 [2024-02-02 09:37:02,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:02,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:37:02,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:37:02,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:37:02,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,245 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 2, 2, 6, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 2, 1]. [2024-02-02 09:37:02,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:37:02,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:37:02,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:37:02,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:37:02,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (1/1) ... [2024-02-02 09:37:02,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:37:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:02,342 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) [2024-02-02 09:37:02,379 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 [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:37:02,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:37:02,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:37:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:37:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:37:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:37:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-02 09:37:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-02 09:37:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-02 09:37:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-02 09:37:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:37:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:37:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:37:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:37:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:37:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:37:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:37:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:37:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-02 09:37:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:37:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:37:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:37:02,409 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:37:02,502 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:37:02,504 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:37:03,205 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:37:03,206 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:37:03,540 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:37:03,540 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-02 09:37:03,541 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:03 BoogieIcfgContainer [2024-02-02 09:37:03,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:37:03,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:37:03,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:37:03,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:37:03,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:37:01" (1/4) ... [2024-02-02 09:37:03,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe291a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (2/4) ... [2024-02-02 09:37:03,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe291a6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:02" (3/4) ... [2024-02-02 09:37:03,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe291a6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:03" (4/4) ... [2024-02-02 09:37:03,549 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-02-02 09:37:03,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:37:03,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 95 error locations. [2024-02-02 09:37:03,563 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:37:03,675 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-02 09:37:03,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 199 transitions, 426 flow [2024-02-02 09:37:03,774 INFO L124 PetriNetUnfolderBase]: 6/195 cut-off events. [2024-02-02 09:37:03,774 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:37:03,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 195 events. 6/195 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 740 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2024-02-02 09:37:03,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 199 transitions, 426 flow [2024-02-02 09:37:03,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 194 transitions, 412 flow [2024-02-02 09:37:03,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:37:03,839 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;@518dfef9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:37:03,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 167 error locations. [2024-02-02 09:37:03,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:37:03,844 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:37:03,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:37:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:37:03,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-02-02 09:37:03,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash 40815, now seen corresponding path program 1 times [2024-02-02 09:37:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013751859] [2024-02-02 09:37:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:04,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013751859] [2024-02-02 09:37:04,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013751859] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:04,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:04,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382623010] [2024-02-02 09:37:04,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:04,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:04,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 199 [2024-02-02 09:37:04,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:04,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:04,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 199 [2024-02-02 09:37:04,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:12,456 INFO L124 PetriNetUnfolderBase]: 57190/84471 cut-off events. [2024-02-02 09:37:12,456 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-02-02 09:37:12,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163919 conditions, 84471 events. 57190/84471 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 756041 event pairs, 57177 based on Foata normal form. 0/50723 useless extension candidates. Maximal degree in co-relation 151959. Up to 76463 conditions per place. [2024-02-02 09:37:13,117 INFO L140 encePairwiseOnDemand]: 172/199 looper letters, 92 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-02-02 09:37:13,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 522 flow [2024-02-02 09:37:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2024-02-02 09:37:13,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661641541038526 [2024-02-02 09:37:13,133 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 412 flow. Second operand 3 states and 338 transitions. [2024-02-02 09:37:13,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 522 flow [2024-02-02 09:37:14,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 506 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:37:14,014 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 322 flow [2024-02-02 09:37:14,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-02-02 09:37:14,017 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -43 predicate places. [2024-02-02 09:37:14,017 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 322 flow [2024-02-02 09:37:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:14,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:14,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:37:14,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:37:14,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-02-02 09:37:14,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1266589, now seen corresponding path program 1 times [2024-02-02 09:37:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:14,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135506673] [2024-02-02 09:37:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:14,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135506673] [2024-02-02 09:37:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135506673] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:14,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605352890] [2024-02-02 09:37:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:14,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:14,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2024-02-02 09:37:14,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2024-02-02 09:37:14,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2024-02-02 09:37:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:20,433 INFO L124 PetriNetUnfolderBase]: 57190/84470 cut-off events. [2024-02-02 09:37:20,433 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-02-02 09:37:20,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162037 conditions, 84470 events. 57190/84470 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 756259 event pairs, 57177 based on Foata normal form. 0/50724 useless extension candidates. Maximal degree in co-relation 162028. Up to 76460 conditions per place. [2024-02-02 09:37:20,976 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 90 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-02-02 09:37:20,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 504 flow [2024-02-02 09:37:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2024-02-02 09:37:20,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326633165829145 [2024-02-02 09:37:20,979 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 322 flow. Second operand 3 states and 318 transitions. [2024-02-02 09:37:20,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 504 flow [2024-02-02 09:37:20,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 154 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:20,981 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 320 flow [2024-02-02 09:37:20,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=157, PETRI_TRANSITIONS=154} [2024-02-02 09:37:20,982 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -44 predicate places. [2024-02-02 09:37:20,982 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 320 flow [2024-02-02 09:37:20,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2024-02-02 09:37:20,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:20,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:37:20,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:37:20,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-02-02 09:37:20,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash 39265459, now seen corresponding path program 1 times [2024-02-02 09:37:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227774438] [2024-02-02 09:37:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:21,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227774438] [2024-02-02 09:37:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227774438] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:21,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537963214] [2024-02-02 09:37:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:21,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2024-02-02 09:37:21,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 154 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-02-02 09:37:21,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:21,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2024-02-02 09:37:21,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:27,386 INFO L124 PetriNetUnfolderBase]: 57190/84469 cut-off events. [2024-02-02 09:37:27,386 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-02-02 09:37:27,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162035 conditions, 84469 events. 57190/84469 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 756036 event pairs, 57177 based on Foata normal form. 0/50725 useless extension candidates. Maximal degree in co-relation 162024. Up to 76458 conditions per place. [2024-02-02 09:37:27,836 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 89 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-02-02 09:37:27,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 153 transitions, 500 flow [2024-02-02 09:37:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2024-02-02 09:37:27,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5360134003350083 [2024-02-02 09:37:27,839 INFO L175 Difference]: Start difference. First operand has 157 places, 154 transitions, 320 flow. Second operand 3 states and 320 transitions. [2024-02-02 09:37:27,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 153 transitions, 500 flow [2024-02-02 09:37:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 153 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:27,843 INFO L231 Difference]: Finished difference. Result has 156 places, 153 transitions, 318 flow [2024-02-02 09:37:27,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=156, PETRI_TRANSITIONS=153} [2024-02-02 09:37:27,844 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -45 predicate places. [2024-02-02 09:37:27,844 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 153 transitions, 318 flow [2024-02-02 09:37:27,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-02-02 09:37:27,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:27,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:37:27,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:37:27,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-02-02 09:37:27,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1217230418, now seen corresponding path program 1 times [2024-02-02 09:37:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:27,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49955244] [2024-02-02 09:37:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:27,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49955244] [2024-02-02 09:37:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49955244] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:27,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813837367] [2024-02-02 09:37:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:27,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:27,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2024-02-02 09:37:27,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 153 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-02-02 09:37:27,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:27,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2024-02-02 09:37:27,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand