./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:37:01,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:37:01,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:37:01,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:37:01,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:37:01,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:37:01,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:37:01,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:37:01,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:37:01,329 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:37:01,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:37:01,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:37:01,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:37:01,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:37:01,331 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:37:01,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:37:01,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:37:01,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:37:01,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:37:01,332 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:37:01,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:37:01,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:37:01,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:37:01,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:37:01,333 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:37:01,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:37:01,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:37:01,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:37:01,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:37:01,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:37:01,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:37:01,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:37:01,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:37:01,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:37:01,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:37:01,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:37:01,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:37:01,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:37:01,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:37:01,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:37:01,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:37:01,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:37:01,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:37:01,338 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:37:01,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:37:01,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:37:01,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:37:01,555 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:37:01,556 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:37:01,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml [2024-02-02 09:37:01,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:37:01,771 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:37:01,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-02 09:37:02,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:37:03,125 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:37:03,126 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-02 09:37:03,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b0733bd/efc3d6391c2c4faf97b512604c27364c/FLAG2f1287b51 [2024-02-02 09:37:03,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b0733bd/efc3d6391c2c4faf97b512604c27364c [2024-02-02 09:37:03,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:37:03,146 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:37:03,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:03,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:37:03,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:37:03,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:03,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc30cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:03,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4deca558 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:03" (2/2) ... [2024-02-02 09:37:03,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc30cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:03" (2/2) ... [2024-02-02 09:37:03,154 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:37:03,229 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L137-L137] ((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L139-L139] ((((q2 == 0) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,230 INFO L101 nessWitnessExtractor]: Location invariant before [L133-L133] ((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L134-L134] (((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L122-L122] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L174-L174] (0 <= i) && (0 <= j) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,231 INFO L101 nessWitnessExtractor]: Loop invariant at [L165-L167] ((((f == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L172-L172] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L89-L89] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,232 INFO L101 nessWitnessExtractor]: Location invariant before [L145-L145] ((i == 0) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,233 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L64] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L138-L138] (((((q1 == 0) && (q2 == 0)) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L121-L121] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L132-L132] (((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Loop invariant at [L73-L87] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,234 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,235 INFO L101 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (total == 0) [2024-02-02 09:37:03,235 INFO L101 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,235 INFO L101 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,236 INFO L101 nessWitnessExtractor]: Location invariant before [L117-L117] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,236 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,236 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L135-L135] ((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L173-L173] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L116-L116] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,237 INFO L101 nessWitnessExtractor]: Location invariant before [L125-L125] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Loop invariant at [L114-L123] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Location invariant before [L107-L107] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Location invariant before [L22-L25] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,238 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,239 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,239 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,239 INFO L101 nessWitnessExtractor]: Location invariant before [L140-L140] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,239 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,240 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,240 INFO L101 nessWitnessExtractor]: Location invariant before [L119-L119] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,240 INFO L101 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,240 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,240 INFO L101 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L99-L99] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L164-L164] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L120-L120] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L101-L101] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,241 INFO L101 nessWitnessExtractor]: Location invariant before [L136-L136] (((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L168-L168] ((((0 <= i) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L166-L166] (((((f == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,242 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,243 INFO L101 nessWitnessExtractor]: Loop invariant at [L96-L105] (unsigned long )_argptr == 0UL [2024-02-02 09:37:03,243 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,243 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:37:03,243 INFO L101 nessWitnessExtractor]: Location invariant before [L161-L161] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,243 INFO L101 nessWitnessExtractor]: Location invariant before [L162-L162] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-02 09:37:03,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:37:03,440 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2024-02-02 09:37:03,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:03,464 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:37:03,475 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,568 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:03,592 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:37:03,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03 WrapperNode [2024-02-02 09:37:03,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:03,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:03,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:37:03,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:37:03,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,696 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 468 [2024-02-02 09:37:03,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:03,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:37:03,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:37:03,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:37:03,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,739 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 10]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 3]. [2024-02-02 09:37:03,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:37:03,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:37:03,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:37:03,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:37:03,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:37:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:03,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:37:03,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:37:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:37:03,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:37:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:37:03,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:37:03,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-02 09:37:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-02 09:37:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:37:03,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:37:03,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:37:03,865 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:37:03,989 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:37:03,990 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:37:04,641 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:37:04,641 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:37:04,966 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:37:04,966 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-02-02 09:37:04,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:04 BoogieIcfgContainer [2024-02-02 09:37:04,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:37:04,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:37:04,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:37:04,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:37:04,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/4) ... [2024-02-02 09:37:04,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286fd8b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:37:03" (2/4) ... [2024-02-02 09:37:04,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286fd8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (3/4) ... [2024-02-02 09:37:04,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286fd8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:04" (4/4) ... [2024-02-02 09:37:04,973 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-02-02 09:37:04,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:37:04,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2024-02-02 09:37:04,988 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:37:05,094 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-02 09:37:05,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 218 transitions, 464 flow [2024-02-02 09:37:05,218 INFO L124 PetriNetUnfolderBase]: 7/214 cut-off events. [2024-02-02 09:37:05,218 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:37:05,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 214 events. 7/214 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 765 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 179. Up to 2 conditions per place. [2024-02-02 09:37:05,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 218 transitions, 464 flow [2024-02-02 09:37:05,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 213 transitions, 450 flow [2024-02-02 09:37:05,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:37:05,241 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;@176dc42c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:37:05,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 180 error locations. [2024-02-02 09:37:05,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:37:05,243 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:37:05,243 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:37:05,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:05,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:37:05,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-02-02 09:37:05,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash 47305, now seen corresponding path program 1 times [2024-02-02 09:37:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:05,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555975839] [2024-02-02 09:37:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:05,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:05,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555975839] [2024-02-02 09:37:05,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555975839] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:05,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:05,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:05,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995587416] [2024-02-02 09:37:05,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:05,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 218 [2024-02-02 09:37:05,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 213 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:05,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:05,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 218 [2024-02-02 09:37:05,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:13,606 INFO L124 PetriNetUnfolderBase]: 57191/83857 cut-off events. [2024-02-02 09:37:13,607 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-02-02 09:37:13,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163315 conditions, 83857 events. 57191/83857 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 4791. Compared 743338 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 151329. Up to 76473 conditions per place. [2024-02-02 09:37:14,245 INFO L140 encePairwiseOnDemand]: 188/218 looper letters, 102 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2024-02-02 09:37:14,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 171 transitions, 574 flow [2024-02-02 09:37:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-02-02 09:37:14,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642201834862385 [2024-02-02 09:37:14,262 INFO L175 Difference]: Start difference. First operand has 219 places, 213 transitions, 450 flow. Second operand 3 states and 369 transitions. [2024-02-02 09:37:14,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 171 transitions, 574 flow [2024-02-02 09:37:14,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 558 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:37:14,499 INFO L231 Difference]: Finished difference. Result has 173 places, 171 transitions, 354 flow [2024-02-02 09:37:14,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=173, PETRI_TRANSITIONS=171} [2024-02-02 09:37:14,503 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -46 predicate places. [2024-02-02 09:37:14,503 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 171 transitions, 354 flow [2024-02-02 09:37:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:14,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:14,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:37:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:37:14,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-02-02 09:37:14,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1468023, now seen corresponding path program 1 times [2024-02-02 09:37:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:14,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122242753] [2024-02-02 09:37:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:14,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122242753] [2024-02-02 09:37:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122242753] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:14,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939978218] [2024-02-02 09:37:14,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:14,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 218 [2024-02-02 09:37:14,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 171 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:14,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:14,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 218 [2024-02-02 09:37:14,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:21,270 INFO L124 PetriNetUnfolderBase]: 57191/83856 cut-off events. [2024-02-02 09:37:21,276 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-02-02 09:37:21,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161434 conditions, 83856 events. 57191/83856 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4791. Compared 742547 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 161425. Up to 76471 conditions per place. [2024-02-02 09:37:21,942 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 101 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2024-02-02 09:37:21,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 558 flow [2024-02-02 09:37:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-02-02 09:37:21,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259938837920489 [2024-02-02 09:37:21,944 INFO L175 Difference]: Start difference. First operand has 173 places, 171 transitions, 354 flow. Second operand 3 states and 344 transitions. [2024-02-02 09:37:21,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 558 flow [2024-02-02 09:37:21,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 170 transitions, 554 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:21,949 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 352 flow [2024-02-02 09:37:21,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2024-02-02 09:37:21,950 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -47 predicate places. [2024-02-02 09:37:21,950 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 352 flow [2024-02-02 09:37:21,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:21,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:21,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:37:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:37:21,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-02-02 09:37:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash 45510259, now seen corresponding path program 1 times [2024-02-02 09:37:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014484166] [2024-02-02 09:37:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014484166] [2024-02-02 09:37:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014484166] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:22,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289808511] [2024-02-02 09:37:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:22,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:22,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 218 [2024-02-02 09:37:22,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:22,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:22,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 218 [2024-02-02 09:37:22,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:28,294 INFO L124 PetriNetUnfolderBase]: 57191/83855 cut-off events. [2024-02-02 09:37:28,294 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-02-02 09:37:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161432 conditions, 83855 events. 57191/83855 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 4813. Compared 744134 event pairs, 57177 based on Foata normal form. 0/50366 useless extension candidates. Maximal degree in co-relation 161421. Up to 76469 conditions per place. [2024-02-02 09:37:28,716 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 100 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2024-02-02 09:37:28,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 554 flow [2024-02-02 09:37:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2024-02-02 09:37:28,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290519877675841 [2024-02-02 09:37:28,721 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 352 flow. Second operand 3 states and 346 transitions. [2024-02-02 09:37:28,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 554 flow [2024-02-02 09:37:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:28,724 INFO L231 Difference]: Finished difference. Result has 171 places, 169 transitions, 350 flow [2024-02-02 09:37:28,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2024-02-02 09:37:28,726 INFO L281 CegarLoopForPetriNet]: 219 programPoint places, -48 predicate places. [2024-02-02 09:37:28,726 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 350 flow [2024-02-02 09:37:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:28,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:28,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:37:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:37:28,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 177 more)] === [2024-02-02 09:37:28,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1410819583, now seen corresponding path program 1 times [2024-02-02 09:37:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405788682] [2024-02-02 09:37:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:28,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405788682] [2024-02-02 09:37:28,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405788682] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:28,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:28,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:28,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025280503] [2024-02-02 09:37:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:28,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:28,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 218 [2024-02-02 09:37:28,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:28,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:28,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 218 [2024-02-02 09:37:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand