./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.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b 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.2024-01-24_13-31-21.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-d8006e4-m [2024-02-05 10:51:35,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:51:35,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:51:35,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:51:35,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:51:35,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:51:35,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:51:35,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:51:35,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:51:35,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:51:35,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:51:35,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:51:35,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:51:35,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:51:35,684 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:51:35,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:51:35,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:51:35,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:51:35,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:51:35,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:51:35,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:51:35,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:51:35,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:51:35,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:51:35,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:51:35,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:51:35,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:51:35,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:51:35,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:51:35,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:51:35,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:51:35,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:51:35,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:51:35,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:51:35,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:51:35,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:51:35,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:51:35,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:51:35,691 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:51:36,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:51:36,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:51:36,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:51:36,053 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:51:36,054 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:51:36,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-more-buffer-mult.wvr.yml/witness.yml [2024-02-05 10:51:36,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:51:36,259 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:51:36,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-02-05 10:51:37,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:51:37,401 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:51:37,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-02-05 10:51:37,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc44fa2ba/de342a404eb2402a9ee34ae4d03a63e2/FLAG6fd52abd2 [2024-02-05 10:51:37,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc44fa2ba/de342a404eb2402a9ee34ae4d03a63e2 [2024-02-05 10:51:37,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:51:37,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:51:37,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:51:37,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:51:37,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:51:37,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:36" (1/2) ... [2024-02-05 10:51:37,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c302f7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:37, skipping insertion in model container [2024-02-05 10:51:37,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:36" (1/2) ... [2024-02-05 10:51:37,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@163db20d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:37, skipping insertion in model container [2024-02-05 10:51:37,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:51:37" (2/2) ... [2024-02-05 10:51:37,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c302f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37, skipping insertion in model container [2024-02-05 10:51:37,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:51:37" (2/2) ... [2024-02-05 10:51:37,433 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:51:37,516 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:51:37,518 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,518 INFO L101 nessWitnessExtractor]: Location invariant before [L139-L139] (((-2147483647 <= C) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,518 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,518 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,519 INFO L101 nessWitnessExtractor]: Location invariant before [L133-L133] (((((((q1 == 0) && (q2 == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,519 INFO L101 nessWitnessExtractor]: Location invariant before [L115-L115] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L65] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L170-L170] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,520 INFO L101 nessWitnessExtractor]: Location invariant before [L117-L117] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L90-L90] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L132-L132] ((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,521 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,522 INFO L101 nessWitnessExtractor]: Loop invariant at [L111-L111] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,522 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,522 INFO L101 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,522 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,522 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant after [L70-L70] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,523 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,524 INFO L101 nessWitnessExtractor]: Location invariant before [L165-L165] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,524 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,524 INFO L101 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,524 INFO L101 nessWitnessExtractor]: Location invariant before [L137-L137] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,524 INFO L101 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,525 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,525 INFO L101 nessWitnessExtractor]: Location invariant before [L134-L134] ((((((q1 == 0) && (q2 == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L128-L128] ((((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (C == 0)) && (total == 0) [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L135-L135] (((((q1 == 0) && (q2 == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L101-L101] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,526 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Location invariant before [L171-L171] (0 <= i) && (0 <= j) [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Loop invariant at [L72-L72] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,527 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,528 INFO L101 nessWitnessExtractor]: Location invariant after [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,528 INFO L101 nessWitnessExtractor]: Location invariant before [L116-L116] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,528 INFO L101 nessWitnessExtractor]: Location invariant before [L99-L99] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,528 INFO L101 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,529 INFO L101 nessWitnessExtractor]: Location invariant before [L108-L108] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,529 INFO L101 nessWitnessExtractor]: Location invariant before [L136-L136] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,529 INFO L101 nessWitnessExtractor]: Location invariant before [L113-L113] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,530 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,530 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,530 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,530 INFO L101 nessWitnessExtractor]: Location invariant before [L131-L131] (((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-02-05 10:51:37,530 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L169-L169] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L158-L158] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant before [L110-L110] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,531 INFO L101 nessWitnessExtractor]: Location invariant after [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L130-L130] ((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L96-L96] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L163-L163] (((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L161-L161] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L122-L122] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,532 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Loop invariant at [L93-L93] (unsigned long )_argptr == 0UL [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Location invariant before [L119-L119] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Location invariant before [L114-L114] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((((((q1 == 0) && (q2 == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (total == 0) [2024-02-05 10:51:37,533 INFO L101 nessWitnessExtractor]: Loop invariant at [L162-L162] ((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-02-05 10:51:37,564 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:51:37,724 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-02-05 10:51:37,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:51:37,748 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:51:37,783 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:37,784 WARN L424 MainDispatcher]: Unable to annotate cond = i < N 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 [2024-02-05 10:51:37,806 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:37,807 WARN L424 MainDispatcher]: Unable to annotate cond = j < N 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 [2024-02-05 10:51:37,817 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:37,818 WARN L424 MainDispatcher]: Unable to annotate cond = i < N || q1_front < q1_back 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 [2024-02-05 10:51:37,824 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:37,824 WARN L424 MainDispatcher]: Unable to annotate cond = j < N || q2_front < q2_back 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 [2024-02-05 10:51:37,841 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 [2024-02-05 10:51:37,843 WARN L424 MainDispatcher]: Unable to annotate * arr = (int*)malloc(sizeof(int) * (size_t)size) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:51:37,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:51:37,868 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:51:37,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37 WrapperNode [2024-02-05 10:51:37,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:51:37,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:51:37,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:51:37,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:51:37,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,923 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 402 [2024-02-05 10:51:37,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:51:37,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:51:37,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:51:37,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:51:37,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,965 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 2, 2, 6, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 2, 1]. [2024-02-05 10:51:37,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:37,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:38,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:38,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:38,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:51:38,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:51:38,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:51:38,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:51:38,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (1/1) ... [2024-02-05 10:51:38,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:51:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:51:38,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:51:38,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:51:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:51:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:51:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:51:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:51:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:51:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:51:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:51:38,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:51:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-05 10:51:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:51:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:51:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:51:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:51:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:51:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:51:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-05 10:51:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:51:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:51:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:51:38,078 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:51:38,187 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:51:38,188 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:51:38,773 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:51:38,773 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:51:39,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:51:39,125 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-05 10:51:39,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:51:39 BoogieIcfgContainer [2024-02-05 10:51:39,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:51:39,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:51:39,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:51:39,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:51:39,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:36" (1/4) ... [2024-02-05 10:51:39,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222509f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:51:39, skipping insertion in model container [2024-02-05 10:51:39,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:51:37" (2/4) ... [2024-02-05 10:51:39,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222509f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:51:39, skipping insertion in model container [2024-02-05 10:51:39,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:37" (3/4) ... [2024-02-05 10:51:39,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222509f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:51:39, skipping insertion in model container [2024-02-05 10:51:39,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:51:39" (4/4) ... [2024-02-05 10:51:39,133 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-02-05 10:51:39,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:51:39,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2024-02-05 10:51:39,149 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:51:39,266 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:51:39,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 183 transitions, 394 flow [2024-02-05 10:51:39,366 INFO L124 PetriNetUnfolderBase]: 10/179 cut-off events. [2024-02-05 10:51:39,366 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:51:39,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 179 events. 10/179 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2024-02-05 10:51:39,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 183 transitions, 394 flow [2024-02-05 10:51:39,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 178 transitions, 380 flow [2024-02-05 10:51:39,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:51:39,396 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;@7d436896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:51:39,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2024-02-05 10:51:39,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:51:39,399 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:51:39,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:39,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:39,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:51:39,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:51:39,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash 36738, now seen corresponding path program 1 times [2024-02-05 10:51:39,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:39,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442419693] [2024-02-05 10:51:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:51:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442419693] [2024-02-05 10:51:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442419693] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572415215] [2024-02-05 10:51:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:39,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:39,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:39,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 183 [2024-02-05 10:51:39,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 178 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:39,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:39,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 183 [2024-02-05 10:51:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:44,588 INFO L124 PetriNetUnfolderBase]: 31674/48589 cut-off events. [2024-02-05 10:51:44,588 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-02-05 10:51:44,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92371 conditions, 48589 events. 31674/48589 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430251 event pairs, 29520 based on Foata normal form. 4864/31521 useless extension candidates. Maximal degree in co-relation 84632. Up to 41962 conditions per place. [2024-02-05 10:51:44,909 INFO L140 encePairwiseOnDemand]: 156/183 looper letters, 86 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-02-05 10:51:44,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 143 transitions, 486 flow [2024-02-05 10:51:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2024-02-05 10:51:44,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5500910746812386 [2024-02-05 10:51:44,924 INFO L175 Difference]: Start difference. First operand has 181 places, 178 transitions, 380 flow. Second operand 3 states and 302 transitions. [2024-02-05 10:51:44,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 143 transitions, 486 flow [2024-02-05 10:51:45,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 470 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:51:45,159 INFO L231 Difference]: Finished difference. Result has 146 places, 143 transitions, 298 flow [2024-02-05 10:51:45,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=146, PETRI_TRANSITIONS=143} [2024-02-05 10:51:45,162 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -35 predicate places. [2024-02-05 10:51:45,163 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 143 transitions, 298 flow [2024-02-05 10:51:45,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:45,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:45,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:51:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:51:45,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:51:45,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1140130, now seen corresponding path program 1 times [2024-02-05 10:51:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:45,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884880578] [2024-02-05 10:51:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:45,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:51:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884880578] [2024-02-05 10:51:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884880578] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:45,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367474690] [2024-02-05 10:51:45,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:45,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:45,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 183 [2024-02-05 10:51:45,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 143 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:45,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:45,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 183 [2024-02-05 10:51:45,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:49,127 INFO L124 PetriNetUnfolderBase]: 31674/48588 cut-off events. [2024-02-05 10:51:49,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:49,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91211 conditions, 48588 events. 31674/48588 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430351 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91202. Up to 41959 conditions per place. [2024-02-05 10:51:49,367 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 84 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-02-05 10:51:49,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 142 transitions, 468 flow [2024-02-05 10:51:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2024-02-05 10:51:49,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136612021857924 [2024-02-05 10:51:49,369 INFO L175 Difference]: Start difference. First operand has 146 places, 143 transitions, 298 flow. Second operand 3 states and 282 transitions. [2024-02-05 10:51:49,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 142 transitions, 468 flow [2024-02-05 10:51:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 142 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:51:49,372 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 296 flow [2024-02-05 10:51:49,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-02-05 10:51:49,373 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -36 predicate places. [2024-02-05 10:51:49,373 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 296 flow [2024-02-05 10:51:49,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:49,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:49,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:51:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:51:49,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:51:49,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 35345210, now seen corresponding path program 1 times [2024-02-05 10:51:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800730966] [2024-02-05 10:51:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:51:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800730966] [2024-02-05 10:51:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800730966] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985117568] [2024-02-05 10:51:49,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:49,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:49,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 183 [2024-02-05 10:51:49,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:49,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:49,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 183 [2024-02-05 10:51:49,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:53,082 INFO L124 PetriNetUnfolderBase]: 31674/48587 cut-off events. [2024-02-05 10:51:53,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:53,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91209 conditions, 48587 events. 31674/48587 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2779. Compared 430516 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91198. Up to 41957 conditions per place. [2024-02-05 10:51:53,380 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 83 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-02-05 10:51:53,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 141 transitions, 464 flow [2024-02-05 10:51:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-02-05 10:51:53,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517304189435337 [2024-02-05 10:51:53,382 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 296 flow. Second operand 3 states and 284 transitions. [2024-02-05 10:51:53,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 141 transitions, 464 flow [2024-02-05 10:51:53,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:51:53,387 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 294 flow [2024-02-05 10:51:53,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2024-02-05 10:51:53,388 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -37 predicate places. [2024-02-05 10:51:53,389 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 294 flow [2024-02-05 10:51:53,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:53,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:53,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:51:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:51:53,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:51:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1095702675, now seen corresponding path program 1 times [2024-02-05 10:51:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632959341] [2024-02-05 10:51:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:51:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632959341] [2024-02-05 10:51:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632959341] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:53,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:53,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443966748] [2024-02-05 10:51:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:53,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:53,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 183 [2024-02-05 10:51:53,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:53,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:53,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 183 [2024-02-05 10:51:53,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:57,022 INFO L124 PetriNetUnfolderBase]: 31674/48586 cut-off events. [2024-02-05 10:51:57,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:57,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91207 conditions, 48586 events. 31674/48586 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430534 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91194. Up to 41955 conditions per place. [2024-02-05 10:51:57,462 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 82 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-02-05 10:51:57,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 140 transitions, 460 flow [2024-02-05 10:51:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2024-02-05 10:51:57,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209471766848816 [2024-02-05 10:51:57,465 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 294 flow. Second operand 3 states and 286 transitions. [2024-02-05 10:51:57,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 140 transitions, 460 flow [2024-02-05 10:51:57,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:51:57,468 INFO L231 Difference]: Finished difference. Result has 143 places, 140 transitions, 292 flow [2024-02-05 10:51:57,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=143, PETRI_TRANSITIONS=140} [2024-02-05 10:51:57,469 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -38 predicate places. [2024-02-05 10:51:57,469 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 140 transitions, 292 flow [2024-02-05 10:51:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:57,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:57,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:51:57,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:51:57,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:51:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash -392954158, now seen corresponding path program 1 times [2024-02-05 10:51:57,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:57,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750169981] [2024-02-05 10:51:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:57,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:51:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750169981] [2024-02-05 10:51:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750169981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:57,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:57,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187479512] [2024-02-05 10:51:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:57,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 183 [2024-02-05 10:51:57,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 140 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:51:57,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:57,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 183 [2024-02-05 10:51:57,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:00,978 INFO L124 PetriNetUnfolderBase]: 31674/48585 cut-off events. [2024-02-05 10:52:00,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91205 conditions, 48585 events. 31674/48585 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430400 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91190. Up to 41953 conditions per place. [2024-02-05 10:52:01,199 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 81 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-02-05 10:52:01,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 139 transitions, 456 flow [2024-02-05 10:52:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-02-05 10:52:01,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2024-02-05 10:52:01,200 INFO L175 Difference]: Start difference. First operand has 143 places, 140 transitions, 292 flow. Second operand 3 states and 288 transitions. [2024-02-05 10:52:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 139 transitions, 456 flow [2024-02-05 10:52:01,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:01,202 INFO L231 Difference]: Finished difference. Result has 142 places, 139 transitions, 290 flow [2024-02-05 10:52:01,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=142, PETRI_TRANSITIONS=139} [2024-02-05 10:52:01,203 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -39 predicate places. [2024-02-05 10:52:01,203 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 139 transitions, 290 flow [2024-02-05 10:52:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:52:01,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:01,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:52:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:52:01,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:52:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 703324240, now seen corresponding path program 1 times [2024-02-05 10:52:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596641736] [2024-02-05 10:52:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:01,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:52:01,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596641736] [2024-02-05 10:52:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596641736] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036499178] [2024-02-05 10:52:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:01,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:01,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:01,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 183 [2024-02-05 10:52:01,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 139 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:52:01,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:01,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 183 [2024-02-05 10:52:01,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:04,682 INFO L124 PetriNetUnfolderBase]: 31674/48584 cut-off events. [2024-02-05 10:52:04,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:04,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91203 conditions, 48584 events. 31674/48584 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2789. Compared 430629 event pairs, 29520 based on Foata normal form. 0/26658 useless extension candidates. Maximal degree in co-relation 91186. Up to 41951 conditions per place. [2024-02-05 10:52:04,905 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 80 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-02-05 10:52:04,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 452 flow [2024-02-05 10:52:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-02-05 10:52:04,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282331511839709 [2024-02-05 10:52:04,906 INFO L175 Difference]: Start difference. First operand has 142 places, 139 transitions, 290 flow. Second operand 3 states and 290 transitions. [2024-02-05 10:52:04,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 452 flow [2024-02-05 10:52:04,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:04,909 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 288 flow [2024-02-05 10:52:04,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2024-02-05 10:52:04,909 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -40 predicate places. [2024-02-05 10:52:04,909 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 288 flow [2024-02-05 10:52:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:52:04,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:04,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:52:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:52:04,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 144 more)] === [2024-02-05 10:52:04,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 328216227, now seen corresponding path program 1 times [2024-02-05 10:52:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565322844] [2024-02-05 10:52:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:52:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565322844] [2024-02-05 10:52:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565322844] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:04,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:04,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455820208] [2024-02-05 10:52:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:04,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:04,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2024-02-05 10:52:04,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:52:04,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:04,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2024-02-05 10:52:04,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand