./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:28:03,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:28:03,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:28:03,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:28:03,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:28:03,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:28:03,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:28:03,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:28:03,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:28:03,576 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:28:03,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:28:03,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:28:03,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:28:03,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:28:03,577 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:28:03,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:28:03,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:28:03,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:28:03,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:28:03,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:28:03,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:28:03,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:28:03,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:28:03,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:28:03,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:28:03,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:28:03,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:28:03,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:28:03,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:28:03,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:28:03,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:28:03,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:28:03,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:28:03,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:28:03,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:28:03,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:28:03,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:28:03,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:28:03,590 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:28:03,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:28:03,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:28:03,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:28:03,829 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:28:03,830 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:28:03,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-more-buffer-series.wvr.yml/witness.yml [2024-01-31 16:28:04,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:28:04,001 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:28:04,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-01-31 16:28:04,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:28:05,129 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:28:05,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-01-31 16:28:05,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51fbd7786/4223edc0e4cd4fc78f61c31f5fbad137/FLAG1692d3b16 [2024-01-31 16:28:05,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51fbd7786/4223edc0e4cd4fc78f61c31f5fbad137 [2024-01-31 16:28:05,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:28:05,150 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:28:05,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:28:05,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:28:05,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:28:05,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:04" (1/2) ... [2024-01-31 16:28:05,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580c33a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:28:05, skipping insertion in model container [2024-01-31 16:28:05,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:04" (1/2) ... [2024-01-31 16:28:05,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e479265 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:28:05, skipping insertion in model container [2024-01-31 16:28:05,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:28:05" (2/2) ... [2024-01-31 16:28:05,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580c33a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05, skipping insertion in model container [2024-01-31 16:28:05,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:28:05" (2/2) ... [2024-01-31 16:28:05,161 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:28:05,243 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:28:05,244 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,245 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] ((0 <= j) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,245 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,245 INFO L98 nessWitnessExtractor]: Location invariant before [L162-L162] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,245 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Location invariant before [L119-L119] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] (((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Loop invariant at [L114-L114] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Location invariant before [L142-L142] ((i == 0) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,246 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] (((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L118-L118] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (((0 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,247 INFO L98 nessWitnessExtractor]: Location invariant before [L145-L145] ((i == 0) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,248 INFO L98 nessWitnessExtractor]: Location invariant before [L166-L166] (((((f == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-01-31 16:28:05,248 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,248 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,248 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,248 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L135-L135] ((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,249 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,250 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,250 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (N == 0)) && (total == 0) [2024-01-31 16:28:05,250 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,250 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,250 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,251 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,251 INFO L98 nessWitnessExtractor]: Location invariant after [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] ((((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && (q2_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L120-L120] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] ((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,252 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L125-L125] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,253 INFO L98 nessWitnessExtractor]: Location invariant before [L174-L174] (0 <= i) && (0 <= j) [2024-01-31 16:28:05,254 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,254 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,254 INFO L98 nessWitnessExtractor]: Location invariant after [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,254 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,255 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,255 INFO L98 nessWitnessExtractor]: Location invariant before [L139-L139] ((((q2 == 0) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L173-L173] (((0 <= i) && (0 <= j)) && (1 <= b)) && (b != 0) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Loop invariant at [L96-L96] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L172-L172] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant before [L168-L168] ((((0 <= i) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,256 INFO L98 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] (((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n1 == 0)) && (n2 == 0)) && (total == 0) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L140-L140] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L121-L121] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L117-L117] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] ((0 <= i) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,257 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant after [L71-L71] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,258 INFO L98 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)) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] ((((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && (q1_front <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L138-L138] (((((q1 == 0) && (q2 == 0)) && (f == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,258 INFO L98 nessWitnessExtractor]: Location invariant before [L164-L164] (((f == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Loop invariant at [L73-L73] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] ((((((((((q1 == 0) && (q2 == 0)) && (f == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (i == 0)) && (j == 0)) && (n2 == 0)) && (total == 0) [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,259 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:28:05,280 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:28:05,413 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2024-01-31 16:28:05,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:28:05,426 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:28:05,468 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,468 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 [2024-01-31 16:28:05,479 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,480 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 [2024-01-31 16:28:05,490 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,490 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 [2024-01-31 16:28:05,496 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:28:05,497 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 [2024-01-31 16:28:05,527 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 [2024-01-31 16:28:05,535 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 [2024-01-31 16:28:05,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:28:05,555 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:28:05,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05 WrapperNode [2024-01-31 16:28:05,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:28:05,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:28:05,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:28:05,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:28:05,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,618 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 454 [2024-01-31 16:28:05,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:28:05,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:28:05,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:28:05,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:28:05,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,654 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 10, 2, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 3, 1, 1, 1, 1]. [2024-01-31 16:28:05,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:28:05,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:28:05,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:28:05,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:28:05,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (1/1) ... [2024-01-31 16:28:05,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:28:05,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:28:05,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:28:05,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:28:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:28:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:28:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:28:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:28:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:28:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:28:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:28:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:28:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:28:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:28:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:28:05,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:28:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:28:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:28:05,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:28:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:28:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:28:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:28:05,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:28:05,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:28:05,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:28:05,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:28:05,786 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:28:05,914 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:28:05,917 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:28:06,530 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:28:06,531 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:28:06,894 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:28:06,894 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-01-31 16:28:06,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:28:06 BoogieIcfgContainer [2024-01-31 16:28:06,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:28:06,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:28:06,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:28:06,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:28:06,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:28:04" (1/4) ... [2024-01-31 16:28:06,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76921a5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:28:05" (2/4) ... [2024-01-31 16:28:06,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76921a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:28:05" (3/4) ... [2024-01-31 16:28:06,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76921a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:28:06, skipping insertion in model container [2024-01-31 16:28:06,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:28:06" (4/4) ... [2024-01-31 16:28:06,910 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-01-31 16:28:06,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:28:06,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 91 error locations. [2024-01-31 16:28:06,925 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:28:07,064 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:28:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 198 transitions, 424 flow [2024-01-31 16:28:07,190 INFO L124 PetriNetUnfolderBase]: 11/194 cut-off events. [2024-01-31 16:28:07,191 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:28:07,197 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. [2024-01-31 16:28:07,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 198 transitions, 424 flow [2024-01-31 16:28:07,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 193 transitions, 410 flow [2024-01-31 16:28:07,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:28:07,230 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;@5cab3fb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:28:07,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 158 error locations. [2024-01-31 16:28:07,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:28:07,233 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:28:07,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:07,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:07,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:28:07,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:07,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash 42669, now seen corresponding path program 1 times [2024-01-31 16:28:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850201434] [2024-01-31 16:28:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:07,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:07,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850201434] [2024-01-31 16:28:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850201434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:07,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:07,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873791629] [2024-01-31 16:28:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:07,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:07,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 198 [2024-01-31 16:28:07,785 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) [2024-01-31 16:28:07,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:07,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 198 [2024-01-31 16:28:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:12,681 INFO L124 PetriNetUnfolderBase]: 31675/48601 cut-off events. [2024-01-31 16:28:12,681 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-01-31 16:28:12,772 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. [2024-01-31 16:28:13,010 INFO L140 encePairwiseOnDemand]: 168/198 looper letters, 95 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-01-31 16:28:13,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 528 flow [2024-01-31 16:28:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2024-01-31 16:28:13,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437710437710438 [2024-01-31 16:28:13,022 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 410 flow. Second operand 3 states and 323 transitions. [2024-01-31 16:28:13,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 528 flow [2024-01-31 16:28:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 512 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:28:13,110 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 322 flow [2024-01-31 16:28:13,112 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} [2024-01-31 16:28:13,114 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -38 predicate places. [2024-01-31 16:28:13,114 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 322 flow [2024-01-31 16:28:13,114 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) [2024-01-31 16:28:13,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:13,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:28:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:28:13,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:13,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1324225, now seen corresponding path program 1 times [2024-01-31 16:28:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406501474] [2024-01-31 16:28:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:13,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:13,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406501474] [2024-01-31 16:28:13,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406501474] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:13,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:13,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:13,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932748877] [2024-01-31 16:28:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:13,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:13,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:13,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 198 [2024-01-31 16:28:13,293 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) [2024-01-31 16:28:13,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:13,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 198 [2024-01-31 16:28:13,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:16,878 INFO L124 PetriNetUnfolderBase]: 31675/48600 cut-off events. [2024-01-31 16:28:16,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:16,941 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. [2024-01-31 16:28:17,136 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 94 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-01-31 16:28:17,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 512 flow [2024-01-31 16:28:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2024-01-31 16:28:17,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016835016835017 [2024-01-31 16:28:17,138 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 322 flow. Second operand 3 states and 298 transitions. [2024-01-31 16:28:17,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 512 flow [2024-01-31 16:28:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 154 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:17,141 INFO L231 Difference]: Finished difference. Result has 156 places, 154 transitions, 320 flow [2024-01-31 16:28:17,141 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} [2024-01-31 16:28:17,142 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -39 predicate places. [2024-01-31 16:28:17,142 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 154 transitions, 320 flow [2024-01-31 16:28:17,142 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) [2024-01-31 16:28:17,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:17,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:28:17,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:28:17,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:17,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 41052434, now seen corresponding path program 1 times [2024-01-31 16:28:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:17,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401236067] [2024-01-31 16:28:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401236067] [2024-01-31 16:28:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401236067] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:17,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:17,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878826112] [2024-01-31 16:28:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:17,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 198 [2024-01-31 16:28:17,283 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) [2024-01-31 16:28:17,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:17,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 198 [2024-01-31 16:28:17,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:20,850 INFO L124 PetriNetUnfolderBase]: 31675/48599 cut-off events. [2024-01-31 16:28:20,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:20,914 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. [2024-01-31 16:28:21,294 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 93 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-01-31 16:28:21,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 508 flow [2024-01-31 16:28:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2024-01-31 16:28:21,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-01-31 16:28:21,297 INFO L175 Difference]: Start difference. First operand has 156 places, 154 transitions, 320 flow. Second operand 3 states and 300 transitions. [2024-01-31 16:28:21,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 508 flow [2024-01-31 16:28:21,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 153 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:21,305 INFO L231 Difference]: Finished difference. Result has 155 places, 153 transitions, 318 flow [2024-01-31 16:28:21,305 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} [2024-01-31 16:28:21,306 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -40 predicate places. [2024-01-31 16:28:21,306 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 153 transitions, 318 flow [2024-01-31 16:28:21,306 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) [2024-01-31 16:28:21,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:21,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:28:21,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:28:21,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:21,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1272626925, now seen corresponding path program 1 times [2024-01-31 16:28:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:21,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928735184] [2024-01-31 16:28:21,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:21,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:21,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928735184] [2024-01-31 16:28:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928735184] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061783991] [2024-01-31 16:28:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:21,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 198 [2024-01-31 16:28:21,468 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) [2024-01-31 16:28:21,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:21,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 198 [2024-01-31 16:28:21,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:24,989 INFO L124 PetriNetUnfolderBase]: 31675/48598 cut-off events. [2024-01-31 16:28:24,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:25,050 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. [2024-01-31 16:28:25,228 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 92 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-01-31 16:28:25,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 152 transitions, 504 flow [2024-01-31 16:28:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2024-01-31 16:28:25,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084175084175084 [2024-01-31 16:28:25,229 INFO L175 Difference]: Start difference. First operand has 155 places, 153 transitions, 318 flow. Second operand 3 states and 302 transitions. [2024-01-31 16:28:25,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 152 transitions, 504 flow [2024-01-31 16:28:25,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:25,231 INFO L231 Difference]: Finished difference. Result has 154 places, 152 transitions, 316 flow [2024-01-31 16:28:25,232 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} [2024-01-31 16:28:25,232 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -41 predicate places. [2024-01-31 16:28:25,232 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 152 transitions, 316 flow [2024-01-31 16:28:25,233 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) [2024-01-31 16:28:25,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:25,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:28:25,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:28:25,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:25,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 796730462, now seen corresponding path program 1 times [2024-01-31 16:28:25,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392067133] [2024-01-31 16:28:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392067133] [2024-01-31 16:28:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392067133] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547088659] [2024-01-31 16:28:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:25,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:25,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 198 [2024-01-31 16:28:25,343 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) [2024-01-31 16:28:25,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:25,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 198 [2024-01-31 16:28:25,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:29,000 INFO L124 PetriNetUnfolderBase]: 31675/48597 cut-off events. [2024-01-31 16:28:29,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:29,053 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. [2024-01-31 16:28:29,215 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 91 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-01-31 16:28:29,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 151 transitions, 500 flow [2024-01-31 16:28:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-01-31 16:28:29,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117845117845118 [2024-01-31 16:28:29,217 INFO L175 Difference]: Start difference. First operand has 154 places, 152 transitions, 316 flow. Second operand 3 states and 304 transitions. [2024-01-31 16:28:29,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 151 transitions, 500 flow [2024-01-31 16:28:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:29,219 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 314 flow [2024-01-31 16:28:29,219 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} [2024-01-31 16:28:29,219 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -42 predicate places. [2024-01-31 16:28:29,220 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 314 flow [2024-01-31 16:28:29,220 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) [2024-01-31 16:28:29,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:29,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:28:29,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:28:29,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:29,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1071158139, now seen corresponding path program 1 times [2024-01-31 16:28:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:29,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572944184] [2024-01-31 16:28:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572944184] [2024-01-31 16:28:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572944184] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884382192] [2024-01-31 16:28:29,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:29,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 198 [2024-01-31 16:28:29,344 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) [2024-01-31 16:28:29,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:29,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 198 [2024-01-31 16:28:29,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:28:33,023 INFO L124 PetriNetUnfolderBase]: 31675/48596 cut-off events. [2024-01-31 16:28:33,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:28:33,319 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. [2024-01-31 16:28:33,519 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 90 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-01-31 16:28:33,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 496 flow [2024-01-31 16:28:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:28:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:28:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2024-01-31 16:28:33,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-01-31 16:28:33,520 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 314 flow. Second operand 3 states and 306 transitions. [2024-01-31 16:28:33,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 496 flow [2024-01-31 16:28:33,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:28:33,522 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 312 flow [2024-01-31 16:28:33,523 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} [2024-01-31 16:28:33,523 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, -43 predicate places. [2024-01-31 16:28:33,523 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 312 flow [2024-01-31 16:28:33,524 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) [2024-01-31 16:28:33,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:28:33,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:28:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:28:33,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 155 more)] === [2024-01-31 16:28:33,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:28:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1153837436, now seen corresponding path program 1 times [2024-01-31 16:28:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:28:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054883422] [2024-01-31 16:28:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:28:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:28:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:28:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:28:33,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:28:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054883422] [2024-01-31 16:28:33,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054883422] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:28:33,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:28:33,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:28:33,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973125249] [2024-01-31 16:28:33,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:28:33,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:28:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:28:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:28:33,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:28:33,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 198 [2024-01-31 16:28:33,628 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) [2024-01-31 16:28:33,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:28:33,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 198 [2024-01-31 16:28:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand