./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.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-more-buffer-series.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-series.wvr.c ./goblint.2024-01-24_13-31-21.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-d8006e4-m [2024-02-05 10:51:38,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:51:38,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:51:38,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:51:38,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:51:38,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:51:38,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:51:38,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:51:38,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:51:38,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:51:38,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:51:38,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:51:38,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:51:38,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:51:38,252 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:51:38,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:51:38,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:51:38,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:51:38,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:51:38,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:51:38,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:51:38,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:51:38,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:51:38,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:51:38,255 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:51:38,255 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:51:38,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:51:38,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:51:38,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:51:38,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:51:38,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:51:38,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:51:38,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:51:38,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:51:38,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:51:38,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:51:38,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:51:38,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:51:38,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:51:38,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:51:38,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:51:38,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:51:38,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:51:38,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:51:38,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:51:38,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:51:38,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:51:38,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:51:38,541 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:51:38,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-05 10:51:39,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:51:39,889 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:51:39,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-02-05 10:51:39,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cd31ab3/ae5914050a1d452d9ce177eb407ac118/FLAGabce00855 [2024-02-05 10:51:39,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cd31ab3/ae5914050a1d452d9ce177eb407ac118 [2024-02-05 10:51:39,916 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:51:39,916 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:51:39,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml [2024-02-05 10:51:40,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:51:40,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:51:40,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:51:40,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:51:40,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:51:40,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:51:39" (1/2) ... [2024-02-05 10:51:40,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ee745c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:40, skipping insertion in model container [2024-02-05 10:51:40,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:51:39" (1/2) ... [2024-02-05 10:51:40,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51bbbba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:51:40, skipping insertion in model container [2024-02-05 10:51:40,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:40" (2/2) ... [2024-02-05 10:51:40,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ee745c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40, skipping insertion in model container [2024-02-05 10:51:40,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:40" (2/2) ... [2024-02-05 10:51:40,129 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:51:40,267 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:51:40,268 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,268 INFO L101 nessWitnessExtractor]: Location invariant before [L174-L174] (0 <= i) && (0 <= j) [2024-02-05 10:51:40,268 INFO L101 nessWitnessExtractor]: Location invariant before [L138-L138] (((((q1 == 0) && (q2 == 0)) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,269 INFO L101 nessWitnessExtractor]: Location invariant before [L101-L101] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,269 INFO L101 nessWitnessExtractor]: Location invariant after [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,269 INFO L101 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,269 INFO L101 nessWitnessExtractor]: Location invariant before [L120-L120] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,269 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L173-L173] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L80-L80] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L125-L125] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,270 INFO L101 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,271 INFO L101 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,271 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,271 INFO L101 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,271 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,271 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,272 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,272 INFO L101 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,272 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,273 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) [2024-02-05 10:51:40,273 INFO L101 nessWitnessExtractor]: Location invariant before [L116-L116] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,273 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,273 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) [2024-02-05 10:51:40,273 INFO L101 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,274 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,274 INFO L101 nessWitnessExtractor]: Loop invariant at [L96-L96] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,274 INFO L101 nessWitnessExtractor]: Loop invariant at [L114-L114] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,274 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,274 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,274 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)) [2024-02-05 10:51:40,275 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) [2024-02-05 10:51:40,275 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,275 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,275 INFO L101 nessWitnessExtractor]: Location invariant before [L117-L117] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,276 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,278 INFO L101 nessWitnessExtractor]: Location invariant before [L107-L107] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,278 INFO L101 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,278 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) [2024-02-05 10:51:40,278 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,278 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,279 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,279 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,279 INFO L101 nessWitnessExtractor]: Location invariant before [L119-L119] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,279 INFO L101 nessWitnessExtractor]: Location invariant before [L137-L137] ((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,280 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,280 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,280 INFO L101 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,280 INFO L101 nessWitnessExtractor]: Location invariant before [L121-L121] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,280 INFO L101 nessWitnessExtractor]: Location invariant before [L145-L145] ((i == 0) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,281 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,281 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,281 INFO L101 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,282 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,282 INFO L101 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,283 INFO L101 nessWitnessExtractor]: Location invariant before [L162-L162] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,283 INFO L101 nessWitnessExtractor]: Loop invariant at [L165-L165] ((((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)) [2024-02-05 10:51:40,283 INFO L101 nessWitnessExtractor]: Location invariant before [L98-L98] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,283 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,283 INFO L101 nessWitnessExtractor]: Location invariant before [L57-L57] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Loop invariant at [L73-L73] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Location invariant before [L122-L122] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Location invariant before [L140-L140] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,284 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant before [L168-L168] ((((0 <= i) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant after [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,285 INFO L101 nessWitnessExtractor]: Location invariant before [L164-L164] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant after [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant before [L99-L99] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant before [L161-L161] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,286 INFO L101 nessWitnessExtractor]: Location invariant before [L139-L139] ((((q2 == 0) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-02-05 10:51:40,287 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) [2024-02-05 10:51:40,287 INFO L101 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,287 INFO L101 nessWitnessExtractor]: Location invariant before [L89-L89] (unsigned long )_argptr == 0UL [2024-02-05 10:51:40,287 INFO L101 nessWitnessExtractor]: Location invariant before [L172-L172] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-02-05 10:51:40,287 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:51:40,287 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) [2024-02-05 10:51:40,320 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:51:40,519 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] [2024-02-05 10:51:40,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:51:40,540 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:51:40,584 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:40,584 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 Start Parsing Local [2024-02-05 10:51:40,600 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:40,600 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 Start Parsing Local Start Parsing Local [2024-02-05 10:51:40,612 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:40,612 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 10:51:40,620 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:51:40,620 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 10:51:40,653 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 [2024-02-05 10:51:40,656 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 10:51:40,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:51:40,705 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:51:40,705 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40 WrapperNode [2024-02-05 10:51:40,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:51:40,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:51:40,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:51:40,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:51:40,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,787 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 454 [2024-02-05 10:51:40,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:51:40,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:51:40,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:51:40,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:51:40,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,825 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]. [2024-02-05 10:51:40,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:51:40,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:51:40,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:51:40,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:51:40,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (1/1) ... [2024-02-05 10:51:40,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:51:40,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:51:40,945 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 10:51:40,971 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 10:51:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:51:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:51:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:51:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:51:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:51:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:51:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:51:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-05 10:51:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:51:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:51:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:51:40,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:51:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:51:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-05 10:51:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:51:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:51:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:51:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:51:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:51:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:51:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:51:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:51:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:51:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:51:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:51:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:51:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:51:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-05 10:51:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:51:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:51:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-05 10:51:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:51:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:51:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:51:41,001 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 10:51:41,121 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:51:41,123 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:51:41,896 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:51:41,896 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:51:42,422 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:51:42,434 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-02-05 10:51:42,435 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:51:42 BoogieIcfgContainer [2024-02-05 10:51:42,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:51:42,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:51:42,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:51:42,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:51:42,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:51:39" (1/4) ... [2024-02-05 10:51:42,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b350a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:51:42, skipping insertion in model container [2024-02-05 10:51:42,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:51:40" (2/4) ... [2024-02-05 10:51:42,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b350a07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:51:42, skipping insertion in model container [2024-02-05 10:51:42,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:51:40" (3/4) ... [2024-02-05 10:51:42,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b350a07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:51:42, skipping insertion in model container [2024-02-05 10:51:42,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:51:42" (4/4) ... [2024-02-05 10:51:42,448 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-02-05 10:51:42,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:51:42,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2024-02-05 10:51:42,466 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:51:42,619 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:51:42,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 198 transitions, 424 flow [2024-02-05 10:51:42,744 INFO L124 PetriNetUnfolderBase]: 11/194 cut-off events. [2024-02-05 10:51:42,744 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:51:42,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 11/194 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 658 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2024-02-05 10:51:42,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 198 transitions, 424 flow [2024-02-05 10:51:42,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 193 transitions, 410 flow [2024-02-05 10:51:42,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:51:42,773 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;@6740f68f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:51:42,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 158 error locations. [2024-02-05 10:51:42,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:51:42,775 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:51:42,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:42,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:42,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:51:42,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:51:42,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 42669, now seen corresponding path program 1 times [2024-02-05 10:51:42,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809266806] [2024-02-05 10:51:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:43,208 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 10:51:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809266806] [2024-02-05 10:51:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809266806] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:43,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:43,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034201653] [2024-02-05 10:51:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:43,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 198 [2024-02-05 10:51:43,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 10:51:43,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:43,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 198 [2024-02-05 10:51:43,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:49,626 INFO L124 PetriNetUnfolderBase]: 31675/48601 cut-off events. [2024-02-05 10:51:49,626 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-02-05 10:51:49,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92392 conditions, 48601 events. 31675/48601 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 2773. Compared 430207 event pairs, 29520 based on Foata normal form. 4864/31520 useless extension candidates. Maximal degree in co-relation 84632. Up to 41971 conditions per place. [2024-02-05 10:51:50,073 INFO L140 encePairwiseOnDemand]: 168/198 looper letters, 95 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-02-05 10:51:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 528 flow [2024-02-05 10:51:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2024-02-05 10:51:50,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437710437710438 [2024-02-05 10:51:50,087 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 410 flow. Second operand 3 states and 323 transitions. [2024-02-05 10:51:50,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 528 flow [2024-02-05 10:51:50,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 512 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:51:50,243 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 322 flow [2024-02-05 10:51:50,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2024-02-05 10:51:50,247 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -38 predicate places. [2024-02-05 10:51:50,247 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 322 flow [2024-02-05 10:51:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 10:51:50,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:50,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:51:50,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:51:50,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:51:50,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1324225, now seen corresponding path program 1 times [2024-02-05 10:51:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200683381] [2024-02-05 10:51:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:50,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:50,427 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 10:51:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200683381] [2024-02-05 10:51:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200683381] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:50,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:50,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995588802] [2024-02-05 10:51:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:50,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 198 [2024-02-05 10:51:50,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 155 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 10:51:50,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:50,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 198 [2024-02-05 10:51:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:54,982 INFO L124 PetriNetUnfolderBase]: 31675/48600 cut-off events. [2024-02-05 10:51:54,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:55,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91233 conditions, 48600 events. 31675/48600 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 430357 event pairs, 29520 based on Foata normal form. 0/26656 useless extension candidates. Maximal degree in co-relation 91224. Up to 41969 conditions per place. [2024-02-05 10:51:55,295 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 94 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-02-05 10:51:55,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 512 flow [2024-02-05 10:51:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2024-02-05 10:51:55,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2024-02-05 10:51:55,299 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 322 flow. Second operand 3 states and 298 transitions. [2024-02-05 10:51:55,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 512 flow [2024-02-05 10:51:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 154 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:51:55,303 INFO L231 Difference]: Finished difference. Result has 156 places, 154 transitions, 320 flow [2024-02-05 10:51:55,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=156, PETRI_TRANSITIONS=154} [2024-02-05 10:51:55,304 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -39 predicate places. [2024-02-05 10:51:55,305 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 154 transitions, 320 flow [2024-02-05 10:51:55,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 10:51:55,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:55,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:51:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:51:55,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:51:55,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 41052434, now seen corresponding path program 1 times [2024-02-05 10:51:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699214202] [2024-02-05 10:51:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:51:55,451 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 10:51:55,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:51:55,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699214202] [2024-02-05 10:51:55,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699214202] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:51:55,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:51:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:51:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062448971] [2024-02-05 10:51:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:51:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:51:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:51:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:51:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:51:55,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2024-02-05 10:51:55,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 154 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 10:51:55,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:51:55,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2024-02-05 10:51:55,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:51:59,617 INFO L124 PetriNetUnfolderBase]: 31675/48599 cut-off events. [2024-02-05 10:51:59,617 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:51:59,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91231 conditions, 48599 events. 31675/48599 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2772. Compared 430469 event pairs, 29520 based on Foata normal form. 0/26656 useless extension candidates. Maximal degree in co-relation 91220. Up to 41967 conditions per place. [2024-02-05 10:51:59,946 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 93 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-02-05 10:51:59,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 508 flow [2024-02-05 10:51:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:51:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:51:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2024-02-05 10:51:59,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-02-05 10:51:59,950 INFO L175 Difference]: Start difference. First operand has 156 places, 154 transitions, 320 flow. Second operand 3 states and 300 transitions. [2024-02-05 10:51:59,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 508 flow [2024-02-05 10:51:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 153 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:51:59,955 INFO L231 Difference]: Finished difference. Result has 155 places, 153 transitions, 318 flow [2024-02-05 10:51:59,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=155, PETRI_TRANSITIONS=153} [2024-02-05 10:51:59,957 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -40 predicate places. [2024-02-05 10:51:59,957 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 153 transitions, 318 flow [2024-02-05 10:51:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 10:51:59,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:51:59,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:51:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:51:59,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:51:59,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:51:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1272626925, now seen corresponding path program 1 times [2024-02-05 10:51:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:51:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11467088] [2024-02-05 10:51:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:51:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:51:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:00,110 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 10:52:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11467088] [2024-02-05 10:52:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11467088] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:00,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:00,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303517410] [2024-02-05 10:52:00,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:00,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:00,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 198 [2024-02-05 10:52:00,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 153 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 10:52:00,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:00,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 198 [2024-02-05 10:52:00,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:04,119 INFO L124 PetriNetUnfolderBase]: 31675/48598 cut-off events. [2024-02-05 10:52:04,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:04,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91229 conditions, 48598 events. 31675/48598 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2772. Compared 430152 event pairs, 29520 based on Foata normal form. 0/26656 useless extension candidates. Maximal degree in co-relation 91216. Up to 41965 conditions per place. [2024-02-05 10:52:04,419 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 92 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-02-05 10:52:04,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 152 transitions, 504 flow [2024-02-05 10:52:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2024-02-05 10:52:04,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2024-02-05 10:52:04,421 INFO L175 Difference]: Start difference. First operand has 155 places, 153 transitions, 318 flow. Second operand 3 states and 302 transitions. [2024-02-05 10:52:04,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 152 transitions, 504 flow [2024-02-05 10:52:04,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:04,424 INFO L231 Difference]: Finished difference. Result has 154 places, 152 transitions, 316 flow [2024-02-05 10:52:04,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=154, PETRI_TRANSITIONS=152} [2024-02-05 10:52:04,426 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -41 predicate places. [2024-02-05 10:52:04,426 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 152 transitions, 316 flow [2024-02-05 10:52:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 10:52:04,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:04,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:52:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:52:04,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:52:04,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 796730462, now seen corresponding path program 1 times [2024-02-05 10:52:04,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:04,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206216387] [2024-02-05 10:52:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:04,536 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 10:52:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206216387] [2024-02-05 10:52:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206216387] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:04,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:04,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272825197] [2024-02-05 10:52:04,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:04,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:04,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 198 [2024-02-05 10:52:04,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 152 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 10:52:04,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:04,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 198 [2024-02-05 10:52:04,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:08,617 INFO L124 PetriNetUnfolderBase]: 31675/48597 cut-off events. [2024-02-05 10:52:08,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:08,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91227 conditions, 48597 events. 31675/48597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2772. Compared 430218 event pairs, 29520 based on Foata normal form. 0/26665 useless extension candidates. Maximal degree in co-relation 91212. Up to 41963 conditions per place. [2024-02-05 10:52:08,889 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 91 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-02-05 10:52:08,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 151 transitions, 500 flow [2024-02-05 10:52:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-02-05 10:52:08,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117845117845118 [2024-02-05 10:52:08,891 INFO L175 Difference]: Start difference. First operand has 154 places, 152 transitions, 316 flow. Second operand 3 states and 304 transitions. [2024-02-05 10:52:08,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 151 transitions, 500 flow [2024-02-05 10:52:08,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:08,894 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 314 flow [2024-02-05 10:52:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2024-02-05 10:52:08,895 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -42 predicate places. [2024-02-05 10:52:08,895 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 314 flow [2024-02-05 10:52:08,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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 10:52:08,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:08,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:52:08,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:52:08,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:52:08,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1071158139, now seen corresponding path program 1 times [2024-02-05 10:52:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982957407] [2024-02-05 10:52:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:08,979 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 10:52:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982957407] [2024-02-05 10:52:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982957407] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:08,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739396247] [2024-02-05 10:52:08,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:09,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 198 [2024-02-05 10:52:09,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 10:52:09,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:09,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 198 [2024-02-05 10:52:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:12,711 INFO L124 PetriNetUnfolderBase]: 31675/48596 cut-off events. [2024-02-05 10:52:12,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:12,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91225 conditions, 48596 events. 31675/48596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2772. Compared 429772 event pairs, 29520 based on Foata normal form. 0/26665 useless extension candidates. Maximal degree in co-relation 91208. Up to 41961 conditions per place. [2024-02-05 10:52:12,930 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 90 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-02-05 10:52:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 496 flow [2024-02-05 10:52:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2024-02-05 10:52:12,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-02-05 10:52:12,931 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 314 flow. Second operand 3 states and 306 transitions. [2024-02-05 10:52:12,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 496 flow [2024-02-05 10:52:12,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:12,934 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 312 flow [2024-02-05 10:52:12,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2024-02-05 10:52:12,936 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -43 predicate places. [2024-02-05 10:52:12,936 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 312 flow [2024-02-05 10:52:12,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 10:52:12,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:12,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:52:12,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:52:12,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:52:12,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1153837436, now seen corresponding path program 1 times [2024-02-05 10:52:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:12,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646168898] [2024-02-05 10:52:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:13,019 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 10:52:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646168898] [2024-02-05 10:52:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646168898] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81650798] [2024-02-05 10:52:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:13,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:13,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:13,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 198 [2024-02-05 10:52:13,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 10:52:13,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:13,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 198 [2024-02-05 10:52:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:52:16,785 INFO L124 PetriNetUnfolderBase]: 31675/48595 cut-off events. [2024-02-05 10:52:16,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:52:16,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91223 conditions, 48595 events. 31675/48595 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2781. Compared 430939 event pairs, 29520 based on Foata normal form. 0/26665 useless extension candidates. Maximal degree in co-relation 91204. Up to 41959 conditions per place. [2024-02-05 10:52:16,997 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 89 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2024-02-05 10:52:16,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 149 transitions, 492 flow [2024-02-05 10:52:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:52:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:52:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2024-02-05 10:52:16,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-02-05 10:52:16,999 INFO L175 Difference]: Start difference. First operand has 152 places, 150 transitions, 312 flow. Second operand 3 states and 308 transitions. [2024-02-05 10:52:16,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 149 transitions, 492 flow [2024-02-05 10:52:17,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:52:17,001 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 310 flow [2024-02-05 10:52:17,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=151, PETRI_TRANSITIONS=149} [2024-02-05 10:52:17,002 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -44 predicate places. [2024-02-05 10:52:17,002 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 310 flow [2024-02-05 10:52:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 10:52:17,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:52:17,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:52:17,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:52:17,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-02-05 10:52:17,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:52:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1409223528, now seen corresponding path program 1 times [2024-02-05 10:52:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:52:17,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383928365] [2024-02-05 10:52:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:52:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:52:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:52:17,106 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 10:52:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:52:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383928365] [2024-02-05 10:52:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383928365] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:52:17,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:52:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:52:17,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387815341] [2024-02-05 10:52:17,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:52:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:52:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:52:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:52:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:52:17,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 198 [2024-02-05 10:52:17,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:52:17,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:52:17,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 198 [2024-02-05 10:52:17,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand