./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.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-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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-series.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.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-3d25acf-m [2024-01-30 14:41:03,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:41:03,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:41:03,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:41:03,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:41:03,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:41:03,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:41:03,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:41:03,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:41:03,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:41:03,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:41:03,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:41:03,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:41:03,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:41:03,600 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:41:03,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:41:03,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:41:03,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:41:03,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:41:03,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:41:03,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:41:03,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:41:03,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:41:03,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:41:03,603 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:41:03,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:41:03,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:41:03,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:41:03,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:41:03,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:41:03,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:03,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:41:03,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:41:03,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:41:03,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:41:03,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:41:03,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:41:03,848 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:41:03,864 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:41:03,865 INFO L431 ainManager$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-series.wvr.yml/witness.yml [2024-01-30 14:41:04,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:41:04,058 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:41:04,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-01-30 14:41:05,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:41:05,181 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:41:05,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-01-30 14:41:05,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f7f5bf3/c78fd03cdfbb4172b382ac03ddaa5a74/FLAG06d064ac2 [2024-01-30 14:41:05,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f7f5bf3/c78fd03cdfbb4172b382ac03ddaa5a74 [2024-01-30 14:41:05,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:41:05,200 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:41:05,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:05,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:41:05,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:41:05,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:04" (1/2) ... [2024-01-30 14:41:05,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a78e8e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:05, skipping insertion in model container [2024-01-30 14:41:05,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:04" (1/2) ... [2024-01-30 14:41:05,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@759eb66e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:05, skipping insertion in model container [2024-01-30 14:41:05,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:05" (2/2) ... [2024-01-30 14:41:05,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a78e8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05, skipping insertion in model container [2024-01-30 14:41:05,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:05" (2/2) ... [2024-01-30 14:41:05,210 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:41:05,273 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:41:05,274 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,274 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,274 INFO L98 nessWitnessExtractor]: Location invariant before [L139-L139] ((((q2 == 0) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,274 INFO L98 nessWitnessExtractor]: Loop invariant at [L96-L105] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Loop invariant at [L165-L167] ((((f == 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)) [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Loop invariant at [L73-L87] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L135-L135] ((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L162-L162] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] (((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,275 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] (((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L172-L172] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L140-L140] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,276 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,277 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,277 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,277 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,277 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,277 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L145-L145] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L174-L174] (0 <= i) && (0 <= j) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,278 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,279 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] ((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-01-30 14:41:05,279 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,279 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,279 INFO L98 nessWitnessExtractor]: Location invariant before [L119-L119] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,279 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,280 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L168-L168] ((((0 <= i) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((((((((q1 == 0) && (q2 == 0)) && (f == 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) [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,281 INFO L98 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,282 INFO L98 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,282 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,282 INFO L98 nessWitnessExtractor]: Location invariant before [L121-L121] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,282 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,282 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,283 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,283 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,283 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,283 INFO L98 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,284 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L64] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,284 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,284 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,284 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] (((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L166-L166] (((((f == 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)) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,285 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L138-L138] (((((q1 == 0) && (q2 == 0)) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L164-L164] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] ((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,286 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L120-L120] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L117-L117] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L173-L173] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Loop invariant at [L114-L123] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L125-L125] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,287 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:41:05,476 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-series.wvr.c[4403,4416] [2024-01-30 14:41:05,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:05,489 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:41:05,500 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 Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:41:05,600 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-series.wvr.c[4403,4416] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:41:05,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:05,618 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:41:05,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05 WrapperNode [2024-01-30 14:41:05,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:05,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:05,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:41:05,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:41:05,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,711 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 468 [2024-01-30 14:41:05,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:05,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:41:05,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:41:05,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:41:05,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,758 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 10, 2, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 3, 1, 1, 1, 1]. [2024-01-30 14:41:05,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:41:05,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:41:05,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:41:05,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:41:05,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (1/1) ... [2024-01-30 14:41:05,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:05,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:41:05,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:41:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:41:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:41:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:41:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:41:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:41:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:41:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:41:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:41:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:41:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:41:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:41:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:41:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:41:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:41:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:41:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:41:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:41:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:41:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:41:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:41:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-30 14:41:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:41:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:41:05,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:41:05,876 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:41:05,982 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:41:05,983 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:41:06,728 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:41:06,728 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:41:07,072 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:41:07,072 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-01-30 14:41:07,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:07 BoogieIcfgContainer [2024-01-30 14:41:07,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:41:07,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:41:07,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:41:07,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:41:07,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:04" (1/4) ... [2024-01-30 14:41:07,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c0f535 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:41:05" (2/4) ... [2024-01-30 14:41:07,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c0f535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05" (3/4) ... [2024-01-30 14:41:07,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c0f535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:07" (4/4) ... [2024-01-30 14:41:07,083 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-01-30 14:41:07,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:41:07,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2024-01-30 14:41:07,097 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:41:07,239 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:41:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 218 transitions, 464 flow [2024-01-30 14:41:07,347 INFO L124 PetriNetUnfolderBase]: 7/214 cut-off events. [2024-01-30 14:41:07,347 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:41:07,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 214 events. 7/214 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 765 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2024-01-30 14:41:07,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 218 transitions, 464 flow [2024-01-30 14:41:07,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 213 transitions, 450 flow [2024-01-30 14:41:07,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:41:07,377 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;@2388c441, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:41:07,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 180 error locations. [2024-01-30 14:41:07,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:41:07,379 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:41:07,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:41:07,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:07,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:41:07,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-01-30 14:41:07,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash 47305, now seen corresponding path program 1 times [2024-01-30 14:41:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796506591] [2024-01-30 14:41:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:07,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:07,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796506591] [2024-01-30 14:41:07,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796506591] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:07,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:07,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101951004] [2024-01-30 14:41:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:07,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:07,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:07,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 218 [2024-01-30 14:41:07,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 213 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:07,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:07,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 218 [2024-01-30 14:41:07,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:15,396 INFO L124 PetriNetUnfolderBase]: 57191/83857 cut-off events. [2024-01-30 14:41:15,396 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-01-30 14:41:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163315 conditions, 83857 events. 57191/83857 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 4791. Compared 743338 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 151329. Up to 76473 conditions per place. [2024-01-30 14:41:16,095 INFO L140 encePairwiseOnDemand]: 188/218 looper letters, 102 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2024-01-30 14:41:16,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 171 transitions, 574 flow [2024-01-30 14:41:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-01-30 14:41:16,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642201834862385 [2024-01-30 14:41:16,112 INFO L175 Difference]: Start difference. First operand has 219 places, 213 transitions, 450 flow. Second operand 3 states and 369 transitions. [2024-01-30 14:41:16,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 171 transitions, 574 flow [2024-01-30 14:41:16,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 558 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:41:16,832 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 354 flow [2024-01-30 14:41:16,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-01-30 14:41:16,836 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -46 predicate places. [2024-01-30 14:41:16,836 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 354 flow [2024-01-30 14:41:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:16,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:16,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:41:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:41:16,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-01-30 14:41:16,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1468023, now seen corresponding path program 1 times [2024-01-30 14:41:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465959145] [2024-01-30 14:41:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:16,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:16,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465959145] [2024-01-30 14:41:16,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465959145] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:16,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524201126] [2024-01-30 14:41:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:16,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:16,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:17,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 218 [2024-01-30 14:41:17,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:17,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:17,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 218 [2024-01-30 14:41:17,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:23,090 INFO L124 PetriNetUnfolderBase]: 57191/83856 cut-off events. [2024-01-30 14:41:23,090 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:23,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161434 conditions, 83856 events. 57191/83856 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4791. Compared 742547 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 161425. Up to 76471 conditions per place. [2024-01-30 14:41:23,722 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 101 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2024-01-30 14:41:23,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 558 flow [2024-01-30 14:41:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-01-30 14:41:23,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259938837920489 [2024-01-30 14:41:23,725 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 354 flow. Second operand 3 states and 344 transitions. [2024-01-30 14:41:23,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 558 flow [2024-01-30 14:41:23,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 170 transitions, 554 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:23,730 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 352 flow [2024-01-30 14:41:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2024-01-30 14:41:23,731 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -47 predicate places. [2024-01-30 14:41:23,731 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 352 flow [2024-01-30 14:41:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:23,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:23,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:41:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:41:23,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-01-30 14:41:23,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 45510259, now seen corresponding path program 1 times [2024-01-30 14:41:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:23,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126884329] [2024-01-30 14:41:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:23,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126884329] [2024-01-30 14:41:23,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126884329] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:23,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:23,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:23,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021769857] [2024-01-30 14:41:23,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:23,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:23,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:23,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:23,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 218 [2024-01-30 14:41:23,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:23,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:23,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 218 [2024-01-30 14:41:23,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:29,997 INFO L124 PetriNetUnfolderBase]: 57191/83855 cut-off events. [2024-01-30 14:41:29,997 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161432 conditions, 83855 events. 57191/83855 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4813. Compared 744134 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 161421. Up to 76469 conditions per place. [2024-01-30 14:41:30,519 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 100 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2024-01-30 14:41:30,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 554 flow [2024-01-30 14:41:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2024-01-30 14:41:30,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290519877675841 [2024-01-30 14:41:30,522 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 352 flow. Second operand 3 states and 346 transitions. [2024-01-30 14:41:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 554 flow [2024-01-30 14:41:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:30,525 INFO L231 Difference]: Finished difference. Result has 171 places, 169 transitions, 350 flow [2024-01-30 14:41:30,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2024-01-30 14:41:30,526 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -48 predicate places. [2024-01-30 14:41:30,526 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 350 flow [2024-01-30 14:41:30,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:30,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:30,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:41:30,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:41:30,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-01-30 14:41:30,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1410819583, now seen corresponding path program 1 times [2024-01-30 14:41:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484170169] [2024-01-30 14:41:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:30,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484170169] [2024-01-30 14:41:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484170169] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:30,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759249812] [2024-01-30 14:41:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:30,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:30,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-01-30 14:41:30,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:41:30,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:30,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-01-30 14:41:30,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand