./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 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-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-3d25acf-m [2024-01-30 14:41:03,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:41:03,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:41:03,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:41:03,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:41:03,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:41:03,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:41:03,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:41:03,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:41:03,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:41:03,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:41:03,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:41:03,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:41:03,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:41:03,735 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:41:03,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:41:03,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:41:03,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:41:03,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:41:03,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:41:03,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:41:03,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:41:03,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:41:03,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:41:03,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:41:03,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:41:03,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:41:03,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:41:03,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:41:03,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:41:03,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:41:03,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:41:03,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:03,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:41:03,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:41:03,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:41:03,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:41:03,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:41:03,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:41:03,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:41:03,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:41:03,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:41:03,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:41:03,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:41:03,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:41:03,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:41:03,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:41:03,952 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:41:03,952 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:41:03,953 INFO L431 ainManager$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 [2024-01-30 14:41:04,121 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:41:04,121 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:41:04,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-01-30 14:41:05,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:41:05,408 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:41:05,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-01-30 14:41:05,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4208502/98834de694704c0ea16f708a42679a29/FLAG88d3c3ac2 [2024-01-30 14:41:05,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4208502/98834de694704c0ea16f708a42679a29 [2024-01-30 14:41:05,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:41:05,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:41:05,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:05,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:41:05,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:41:05,446 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 14:41:05,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e830eae 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 14:41:05,448 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 14:41:05,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23ddca85 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 14:41:05,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:05" (2/2) ... [2024-01-30 14:41:05,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e830eae 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 14:41:05,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:05" (2/2) ... [2024-01-30 14:41:05,450 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:41:05,521 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:41:05,523 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,523 INFO L98 nessWitnessExtractor]: Loop invariant at [L111-L120] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,523 INFO L98 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) [2024-01-30 14:41:05,523 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,524 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,524 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,525 INFO L98 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) [2024-01-30 14:41:05,525 INFO L98 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,525 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,525 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,525 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,525 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,526 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,527 INFO L98 nessWitnessExtractor]: Location invariant before [L158-L158] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,527 INFO L98 nessWitnessExtractor]: Location invariant before [L165-L165] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,527 INFO L98 nessWitnessExtractor]: Loop invariant at [L93-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,527 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,528 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,528 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,528 INFO L98 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)) [2024-01-30 14:41:05,528 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,528 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,528 INFO L98 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)) [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,529 INFO L98 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) [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,529 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,530 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,530 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,530 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,531 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,531 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,531 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,531 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,531 INFO L98 nessWitnessExtractor]: Location invariant before [L117-L117] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,532 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,532 INFO L98 nessWitnessExtractor]: Location invariant before [L96-L96] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,532 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,532 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,532 INFO L98 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,533 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,533 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,533 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,533 INFO L98 nessWitnessExtractor]: Location invariant before [L169-L169] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-30 14:41:05,534 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,534 INFO L98 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) [2024-01-30 14:41:05,534 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,535 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,535 INFO L98 nessWitnessExtractor]: Location invariant before [L114-L114] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,536 INFO L98 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) [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L171-L171] (0 <= i) && (0 <= j) [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,536 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,537 INFO L98 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) [2024-01-30 14:41:05,537 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,537 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,537 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L63] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,537 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] ((((((q1 == 0) && (q2 == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,537 INFO L98 nessWitnessExtractor]: Location invariant before [L119-L119] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,538 INFO L98 nessWitnessExtractor]: Loop invariant at [L72-L84] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,538 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,538 INFO L98 nessWitnessExtractor]: Location invariant before [L135-L135] (((((q1 == 0) && (q2 == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,538 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] (unsigned long )_argptr == 0UL [2024-01-30 14:41:05,538 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,539 INFO L98 nessWitnessExtractor]: Location invariant before [L139-L139] (((-2147483647 <= C) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,539 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:41:05,539 INFO L98 nessWitnessExtractor]: Location invariant before [L170-L170] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-01-30 14:41:05,540 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-30 14:41:05,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:41:05,768 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] [2024-01-30 14:41:05,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:05,804 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:41:05,814 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 [2024-01-30 14:41:05,937 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 [2024-01-30 14:41:05,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:05,967 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:41:05,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:05 WrapperNode [2024-01-30 14:41:05,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:05,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:05,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:41:05,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:41:05,976 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 14:41:05,996 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 14:41:06,035 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 414 [2024-01-30 14:41:06,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:06,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:41:06,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:41:06,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:41:06,048 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 14:41:06,048 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 14:41:06,062 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 14:41:06,091 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 6]. 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, 1, 2]. [2024-01-30 14:41:06,092 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 14:41:06,092 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 14:41:06,139 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 14:41:06,148 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 14:41:06,159 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 14:41:06,164 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 14:41:06,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:41:06,172 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:41:06,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:41:06,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:41:06,186 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 14:41:06,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:06,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:06,229 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 14:41:06,230 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 14:41:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:41:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:41:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:41:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:41:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:41:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:41:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:41:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:41:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:41:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:41:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:41:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:41:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:41:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:41:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:41:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:41:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:41:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:41:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:41:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:41:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:41:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:41:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:41:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:41:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:41:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-30 14:41:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:41:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:41:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:41:06,270 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 14:41:06,380 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:41:06,381 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:41:07,010 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:41:07,011 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:41:07,374 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:41:07,375 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-30 14:41:07,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:07 BoogieIcfgContainer [2024-01-30 14:41:07,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:41:07,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:41:07,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:41:07,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:41:07,381 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 14:41:07,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e9178b 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 14:41:07,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:41:05" (2/4) ... [2024-01-30 14:41:07,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e9178b 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 14:41:07,383 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 14:41:07,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e9178b 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 14:41:07,383 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 14:41:07,385 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-01-30 14:41:07,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:41:07,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 95 error locations. [2024-01-30 14:41:07,400 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:41:07,538 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:41:07,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 199 transitions, 426 flow [2024-01-30 14:41:07,635 INFO L124 PetriNetUnfolderBase]: 6/195 cut-off events. [2024-01-30 14:41:07,636 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:41:07,641 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. [2024-01-30 14:41:07,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 199 transitions, 426 flow [2024-01-30 14:41:07,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 194 transitions, 412 flow [2024-01-30 14:41:07,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:41:07,667 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;@37096509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:41:07,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 167 error locations. [2024-01-30 14:41:07,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:41:07,674 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:41:07,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:41:07,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:07,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:41:07,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-01-30 14:41:07,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 40815, now seen corresponding path program 1 times [2024-01-30 14:41:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948914856] [2024-01-30 14:41:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:08,055 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 14:41:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948914856] [2024-01-30 14:41:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948914856] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:08,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479381463] [2024-01-30 14:41:08,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:08,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 199 [2024-01-30 14:41:08,153 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) [2024-01-30 14:41:08,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:08,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 199 [2024-01-30 14:41:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:15,365 INFO L124 PetriNetUnfolderBase]: 57190/84471 cut-off events. [2024-01-30 14:41:15,365 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-01-30 14:41:15,559 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. [2024-01-30 14:41:16,024 INFO L140 encePairwiseOnDemand]: 172/199 looper letters, 92 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-01-30 14:41:16,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 522 flow [2024-01-30 14:41:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2024-01-30 14:41:16,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661641541038526 [2024-01-30 14:41:16,040 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 412 flow. Second operand 3 states and 338 transitions. [2024-01-30 14:41:16,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 522 flow [2024-01-30 14:41:16,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 506 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:41:16,201 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 322 flow [2024-01-30 14:41:16,202 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} [2024-01-30 14:41:16,205 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -43 predicate places. [2024-01-30 14:41:16,205 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 322 flow [2024-01-30 14:41:16,205 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) [2024-01-30 14:41:16,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:16,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:41:16,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:41:16,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-01-30 14:41:16,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1266589, now seen corresponding path program 1 times [2024-01-30 14:41:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813378281] [2024-01-30 14:41:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:16,349 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 14:41:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813378281] [2024-01-30 14:41:16,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813378281] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:16,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:16,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:16,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052724741] [2024-01-30 14:41:16,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:16,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:16,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:16,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:16,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2024-01-30 14:41:16,401 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) [2024-01-30 14:41:16,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:16,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2024-01-30 14:41:16,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:23,243 INFO L124 PetriNetUnfolderBase]: 57190/84470 cut-off events. [2024-01-30 14:41:23,243 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:23,394 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. [2024-01-30 14:41:23,782 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 90 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-01-30 14:41:23,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 504 flow [2024-01-30 14:41:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2024-01-30 14:41:23,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326633165829145 [2024-01-30 14:41:23,785 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 322 flow. Second operand 3 states and 318 transitions. [2024-01-30 14:41:23,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 504 flow [2024-01-30 14:41:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 154 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:23,790 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 320 flow [2024-01-30 14:41:23,790 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} [2024-01-30 14:41:23,791 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -44 predicate places. [2024-01-30 14:41:23,791 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 320 flow [2024-01-30 14:41:23,791 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) [2024-01-30 14:41:23,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:23,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:41:23,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:41:23,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-01-30 14:41:23,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 39265459, now seen corresponding path program 1 times [2024-01-30 14:41:23,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626641717] [2024-01-30 14:41:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:23,915 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 14:41:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626641717] [2024-01-30 14:41:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626641717] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642054761] [2024-01-30 14:41:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:23,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2024-01-30 14:41:23,963 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) [2024-01-30 14:41:23,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:23,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2024-01-30 14:41:23,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:30,118 INFO L124 PetriNetUnfolderBase]: 57190/84469 cut-off events. [2024-01-30 14:41:30,118 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-30 14:41:30,275 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. [2024-01-30 14:41:30,720 INFO L140 encePairwiseOnDemand]: 196/199 looper letters, 89 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-01-30 14:41:30,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 153 transitions, 500 flow [2024-01-30 14:41:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2024-01-30 14:41:30,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5360134003350083 [2024-01-30 14:41:30,723 INFO L175 Difference]: Start difference. First operand has 157 places, 154 transitions, 320 flow. Second operand 3 states and 320 transitions. [2024-01-30 14:41:30,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 153 transitions, 500 flow [2024-01-30 14:41:30,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 153 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:30,729 INFO L231 Difference]: Finished difference. Result has 156 places, 153 transitions, 318 flow [2024-01-30 14:41:30,729 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} [2024-01-30 14:41:30,730 INFO L281 CegarLoopForPetriNet]: 201 programPoint places, -45 predicate places. [2024-01-30 14:41:30,730 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 153 transitions, 318 flow [2024-01-30 14:41:30,730 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) [2024-01-30 14:41:30,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:30,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:41:30,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:41:30,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 164 more)] === [2024-01-30 14:41:30,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1217230418, now seen corresponding path program 1 times [2024-01-30 14:41:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240195745] [2024-01-30 14:41:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:30,819 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 14:41:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240195745] [2024-01-30 14:41:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240195745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:30,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595479931] [2024-01-30 14:41:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:30,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2024-01-30 14:41:30,855 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) [2024-01-30 14:41:30,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:30,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2024-01-30 14:41:30,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand