./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --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/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 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/pthread-wmm/safe029_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.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-ab2e0ac-m [2024-01-29 14:14:48,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:14:48,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:14:48,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:14:48,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:14:48,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:14:48,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:14:48,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:14:48,386 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:14:48,387 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:14:48,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:14:48,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:14:48,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:14:48,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:14:48,388 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:14:48,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:14:48,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:14:48,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:14:48,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:14:48,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:14:48,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:14:48,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:14:48,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:14:48,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:14:48,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:14:48,392 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:14:48,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:14:48,392 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:14:48,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:14:48,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:14:48,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:14:48,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:14:48,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:14:48,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:14:48,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:14:48,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:14:48,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:14:48,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:14:48,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:14:48,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:14:48,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:14:48,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:14:48,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:14:48,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:14:48,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:14:48,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:14:48,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:14:48,671 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:14:48,672 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:14:48,673 INFO L431 ainManager$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/safe029_tso.yml/witness.yml [2024-01-29 14:14:48,848 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:14:48,849 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:14:48,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-29 14:14:49,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:14:50,199 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:14:50,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-29 14:14:50,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ec74872/3b0ff13b58c2405387c97c9e8ed52520/FLAG66cd11720 [2024-01-29 14:14:50,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ec74872/3b0ff13b58c2405387c97c9e8ed52520 [2024-01-29 14:14:50,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:14:50,240 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:14:50,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:14:50,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:14:50,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:14:50,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:14:48" (1/2) ... [2024-01-29 14:14:50,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd7b59e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:14:50, skipping insertion in model container [2024-01-29 14:14:50,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:14:48" (1/2) ... [2024-01-29 14:14:50,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72ff4b57 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:14:50, skipping insertion in model container [2024-01-29 14:14:50,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:14:50" (2/2) ... [2024-01-29 14:14:50,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd7b59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50, skipping insertion in model container [2024-01-29 14:14:50,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:14:50" (2/2) ... [2024-01-29 14:14:50,252 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:14:50,382 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] y <= 2 [2024-01-29 14:14:50,383 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] x == 2 [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] y <= 127 [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (unsigned long )arg == 0UL [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] 0 <= y [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] 0 <= y [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] x <= 2 [2024-01-29 14:14:50,384 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] y <= 127 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] y <= 2 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] x <= 127 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,385 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] 0 <= x [2024-01-29 14:14:50,386 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,386 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] y <= 127 [2024-01-29 14:14:50,386 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-29 14:14:50,386 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,386 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] x == 1 [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] 0 <= y [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] y <= 2 [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (unsigned long )arg == 0UL [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,387 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] y <= 2 [2024-01-29 14:14:50,388 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,388 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,388 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,389 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] x <= 127 [2024-01-29 14:14:50,389 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] y <= 127 [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] 0 <= y [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] 0 <= x [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] x <= 2 [2024-01-29 14:14:50,390 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-01-29 14:14:50,391 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] main$tmp_guard0 == (_Bool)0 [2024-01-29 14:14:50,391 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] x == 0 [2024-01-29 14:14:50,391 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] main$tmp_guard1 == (_Bool)0 [2024-01-29 14:14:50,391 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] y == 0 [2024-01-29 14:14:50,391 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] __unbuffered_cnt == 0 [2024-01-29 14:14:50,392 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-29 14:14:50,392 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] 0 <= x [2024-01-29 14:14:50,392 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] x <= 127 [2024-01-29 14:14:50,392 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,392 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] y <= 127 [2024-01-29 14:14:50,393 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,393 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] y <= 2 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] x <= 2 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] 0 <= y [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (unsigned long )arg == 0UL [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] x <= 127 [2024-01-29 14:14:50,394 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (unsigned long )arg == 0UL [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] y <= 2 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] 0 <= y [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] x <= 2 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,395 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,396 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] 0 <= x [2024-01-29 14:14:50,396 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] y <= 127 [2024-01-29 14:14:50,396 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,396 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,396 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] x <= 127 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] 0 <= x [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] 0 <= y [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] x <= 2 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] y <= 2 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] y <= 127 [2024-01-29 14:14:50,397 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] 0 <= x [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] y <= 2 [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (unsigned long )arg == 0UL [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] 0 <= y [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] x <= 127 [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] y <= 127 [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,398 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,399 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,399 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] x <= 2 [2024-01-29 14:14:50,399 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,399 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (unsigned long )arg == 0UL [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] x <= 127 [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] 0 <= x [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,400 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] y == 2 [2024-01-29 14:14:50,401 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-01-29 14:14:50,401 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,401 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] x <= 2 [2024-01-29 14:14:50,401 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-29 14:14:50,402 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (unsigned long )arg == 0UL [2024-01-29 14:14:50,402 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] y <= 127 [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] x <= 2 [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] 0 <= x [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,403 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] 0 <= y [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] 1 <= __unbuffered_cnt [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] x <= 127 [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] y <= 2 [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] 0 <= x [2024-01-29 14:14:50,404 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] 0 <= y [2024-01-29 14:14:50,405 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,405 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,405 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,405 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] x <= 127 [2024-01-29 14:14:50,405 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] y <= 127 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] y <= 2 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] x <= 2 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] 0 <= y [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,406 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] x <= 2 [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] y <= 2 [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] 0 <= x [2024-01-29 14:14:50,407 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] x <= 127 [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] y <= 127 [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] 1 <= __unbuffered_cnt [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] y <= 127 [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] 0 <= x [2024-01-29 14:14:50,408 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] x <= 2 [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] 0 <= y [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] x <= 127 [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] y <= 2 [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] 0 <= x [2024-01-29 14:14:50,409 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-29 14:14:50,410 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,410 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] x <= 127 [2024-01-29 14:14:50,410 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] x <= 2 [2024-01-29 14:14:50,410 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] 0 <= y [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] y <= 127 [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] y <= 2 [2024-01-29 14:14:50,411 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] 0 <= y [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] y <= 2 [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] x == 2 [2024-01-29 14:14:50,412 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,413 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] y <= 127 [2024-01-29 14:14:50,413 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,414 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,415 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] x <= 2 [2024-01-29 14:14:50,416 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] x <= 127 [2024-01-29 14:14:50,416 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,416 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] y <= 127 [2024-01-29 14:14:50,420 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (unsigned long )arg == 0UL [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] 0 <= x [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] 0 <= y [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] y <= 2 [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-29 14:14:50,421 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] 0 <= expression [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 || expression == 1 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression <= 1 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] y <= 2 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] x <= 2 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,422 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,423 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] x <= 127 [2024-01-29 14:14:50,423 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] 0 <= y [2024-01-29 14:14:50,423 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] y <= 127 [2024-01-29 14:14:50,423 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] 0 <= x [2024-01-29 14:14:50,423 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,424 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] x <= 127 [2024-01-29 14:14:50,424 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] 0 <= y [2024-01-29 14:14:50,424 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] x <= 2 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] 0 <= x [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] y <= 127 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] (y == 0 || y == 1) || y == 2 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] y <= 2 [2024-01-29 14:14:50,425 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] y == 1 [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] x <= 2 [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (x == 0 || x == 1) || x == 2 [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (unsigned long )arg == 0UL [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] 0 <= x [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] 0 <= __unbuffered_cnt [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] x <= 127 [2024-01-29 14:14:50,426 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-01-29 14:14:50,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:14:50,657 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-01-29 14:14:50,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:14:50,777 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 14:14:50,793 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-01-29 14:14:50,794 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();} }; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:14:50,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:14:50,991 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:14:50,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50 WrapperNode [2024-01-29 14:14:50,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:14:50,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:14:50,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:14:50,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:14:50,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,028 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2024-01-29 14:14:51,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:14:51,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:14:51,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:14:51,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:14:51,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,077 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-29 14:14:51,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:14:51,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:14:51,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:14:51,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:14:51,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (1/1) ... [2024-01-29 14:14:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:14:51,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:14:51,126 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) [2024-01-29 14:14:51,138 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 [2024-01-29 14:14:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-29 14:14:51,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-29 14:14:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-29 14:14:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-29 14:14:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:14:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:14:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:14:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-29 14:14:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:14:51,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:14:51,163 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:14:51,248 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:14:51,250 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:14:51,668 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:14:51,668 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:14:52,882 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:14:52,883 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 14:14:52,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:14:52 BoogieIcfgContainer [2024-01-29 14:14:52,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:14:52,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:14:52,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:14:52,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:14:52,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:14:48" (1/4) ... [2024-01-29 14:14:52,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699a937f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:14:52, skipping insertion in model container [2024-01-29 14:14:52,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:14:50" (2/4) ... [2024-01-29 14:14:52,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699a937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:14:52, skipping insertion in model container [2024-01-29 14:14:52,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:14:50" (3/4) ... [2024-01-29 14:14:52,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699a937f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:14:52, skipping insertion in model container [2024-01-29 14:14:52,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:14:52" (4/4) ... [2024-01-29 14:14:52,892 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-01-29 14:14:52,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:14:52,907 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 224 error locations. [2024-01-29 14:14:52,907 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:14:53,057 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 14:14:53,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 265 transitions, 538 flow [2024-01-29 14:14:53,190 INFO L124 PetriNetUnfolderBase]: 1/263 cut-off events. [2024-01-29 14:14:53,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:14:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 263 events. 1/263 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1983 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 253. Up to 2 conditions per place. [2024-01-29 14:14:53,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 265 transitions, 538 flow [2024-01-29 14:14:53,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 263 transitions, 532 flow [2024-01-29 14:14:53,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:14:53,232 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;@30892f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:14:53,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 392 error locations. [2024-01-29 14:14:53,234 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:14:53,234 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:14:53,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:14:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:14:53,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:14:53,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:14:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:14:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash 94316, now seen corresponding path program 1 times [2024-01-29 14:14:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:14:53,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12207676] [2024-01-29 14:14:53,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:14:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:14:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:14:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:14:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:14:53,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12207676] [2024-01-29 14:14:53,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12207676] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:14:53,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:14:53,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:14:53,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420496073] [2024-01-29 14:14:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:14:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:14:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:14:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:14:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:14:53,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 265 [2024-01-29 14:14:53,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 263 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:14:53,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:14:53,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 265 [2024-01-29 14:14:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:00,106 INFO L124 PetriNetUnfolderBase]: 58834/95347 cut-off events. [2024-01-29 14:15:00,106 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 14:15:00,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185420 conditions, 95347 events. 58834/95347 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7723. Compared 1015841 event pairs, 51724 based on Foata normal form. 1276/23238 useless extension candidates. Maximal degree in co-relation 185399. Up to 78192 conditions per place. [2024-01-29 14:15:00,616 INFO L140 encePairwiseOnDemand]: 127/265 looper letters, 198 selfloop transitions, 3 changer transitions 0/231 dead transitions. [2024-01-29 14:15:00,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 231 transitions, 873 flow [2024-01-29 14:15:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:15:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:15:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2024-01-29 14:15:00,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2024-01-29 14:15:00,636 INFO L175 Difference]: Start difference. First operand has 269 places, 263 transitions, 532 flow. Second operand 3 states and 555 transitions. [2024-01-29 14:15:00,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 231 transitions, 873 flow [2024-01-29 14:15:00,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 231 transitions, 870 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:15:00,647 INFO L231 Difference]: Finished difference. Result has 147 places, 141 transitions, 321 flow [2024-01-29 14:15:00,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=147, PETRI_TRANSITIONS=141} [2024-01-29 14:15:00,652 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -122 predicate places. [2024-01-29 14:15:00,653 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 141 transitions, 321 flow [2024-01-29 14:15:00,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:15:00,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:00,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 14:15:00,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:15:00,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:00,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2926639, now seen corresponding path program 1 times [2024-01-29 14:15:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:00,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862802668] [2024-01-29 14:15:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:00,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862802668] [2024-01-29 14:15:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862802668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:00,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:00,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:15:00,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598773787] [2024-01-29 14:15:00,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:00,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:15:00,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:15:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:15:00,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 265 [2024-01-29 14:15:00,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 141 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:15:00,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:00,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 265 [2024-01-29 14:15:00,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:05,792 INFO L124 PetriNetUnfolderBase]: 55008/89211 cut-off events. [2024-01-29 14:15:05,792 INFO L125 PetriNetUnfolderBase]: For 2165/2165 co-relation queries the response was YES. [2024-01-29 14:15:05,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177729 conditions, 89211 events. 55008/89211 cut-off events. For 2165/2165 co-relation queries the response was YES. Maximal size of possible extension queue 7778. Compared 931800 event pairs, 25554 based on Foata normal form. 0/22251 useless extension candidates. Maximal degree in co-relation 177708. Up to 81326 conditions per place. [2024-01-29 14:15:06,334 INFO L140 encePairwiseOnDemand]: 247/265 looper letters, 144 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-01-29 14:15:06,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 176 transitions, 687 flow [2024-01-29 14:15:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:15:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:15:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-01-29 14:15:06,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3220125786163522 [2024-01-29 14:15:06,336 INFO L175 Difference]: Start difference. First operand has 147 places, 141 transitions, 321 flow. Second operand 3 states and 256 transitions. [2024-01-29 14:15:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 176 transitions, 687 flow [2024-01-29 14:15:06,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 176 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:15:06,356 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 361 flow [2024-01-29 14:15:06,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2024-01-29 14:15:06,357 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -121 predicate places. [2024-01-29 14:15:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 361 flow [2024-01-29 14:15:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:15:06,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:06,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 14:15:06,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:15:06,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:06,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 90728731, now seen corresponding path program 1 times [2024-01-29 14:15:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16068276] [2024-01-29 14:15:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:06,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:06,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16068276] [2024-01-29 14:15:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16068276] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:06,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:15:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6807542] [2024-01-29 14:15:06,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:06,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:15:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:15:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:15:06,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 265 [2024-01-29 14:15:06,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-01-29 14:15:06,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:06,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 265 [2024-01-29 14:15:06,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:10,339 INFO L124 PetriNetUnfolderBase]: 39001/63240 cut-off events. [2024-01-29 14:15:10,339 INFO L125 PetriNetUnfolderBase]: For 3308/3308 co-relation queries the response was YES. [2024-01-29 14:15:10,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136293 conditions, 63240 events. 39001/63240 cut-off events. For 3308/3308 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 646028 event pairs, 32482 based on Foata normal form. 1/22495 useless extension candidates. Maximal degree in co-relation 136272. Up to 49608 conditions per place. [2024-01-29 14:15:10,906 INFO L140 encePairwiseOnDemand]: 251/265 looper letters, 180 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2024-01-29 14:15:10,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 211 transitions, 913 flow [2024-01-29 14:15:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:15:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:15:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-01-29 14:15:10,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3584905660377358 [2024-01-29 14:15:10,908 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 361 flow. Second operand 3 states and 285 transitions. [2024-01-29 14:15:10,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 211 transitions, 913 flow [2024-01-29 14:15:10,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 211 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:15:10,928 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 372 flow [2024-01-29 14:15:10,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-01-29 14:15:10,929 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -123 predicate places. [2024-01-29 14:15:10,929 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 372 flow [2024-01-29 14:15:10,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-01-29 14:15:10,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:10,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 14:15:10,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:15:10,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:10,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1482373651, now seen corresponding path program 1 times [2024-01-29 14:15:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:10,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088493056] [2024-01-29 14:15:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:10,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088493056] [2024-01-29 14:15:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088493056] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:10,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:10,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:15:10,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755160904] [2024-01-29 14:15:10,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:10,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:15:10,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:15:10,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:15:10,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 265 [2024-01-29 14:15:10,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:15:10,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:10,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 265 [2024-01-29 14:15:10,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:14,690 INFO L124 PetriNetUnfolderBase]: 36428/61516 cut-off events. [2024-01-29 14:15:14,690 INFO L125 PetriNetUnfolderBase]: For 6687/6738 co-relation queries the response was YES. [2024-01-29 14:15:14,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132300 conditions, 61516 events. 36428/61516 cut-off events. For 6687/6738 co-relation queries the response was YES. Maximal size of possible extension queue 5254. Compared 644319 event pairs, 19790 based on Foata normal form. 45/24215 useless extension candidates. Maximal degree in co-relation 132277. Up to 54575 conditions per place. [2024-01-29 14:15:14,990 INFO L140 encePairwiseOnDemand]: 250/265 looper letters, 137 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2024-01-29 14:15:14,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 167 transitions, 732 flow [2024-01-29 14:15:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:15:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:15:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2024-01-29 14:15:14,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3069182389937107 [2024-01-29 14:15:14,992 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 372 flow. Second operand 3 states and 244 transitions. [2024-01-29 14:15:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 167 transitions, 732 flow [2024-01-29 14:15:15,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 167 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:15:15,008 INFO L231 Difference]: Finished difference. Result has 146 places, 139 transitions, 405 flow [2024-01-29 14:15:15,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=146, PETRI_TRANSITIONS=139} [2024-01-29 14:15:15,009 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -123 predicate places. [2024-01-29 14:15:15,010 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 139 transitions, 405 flow [2024-01-29 14:15:15,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-01-29 14:15:15,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:15,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:15:15,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:15:15,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:15,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1291059920, now seen corresponding path program 1 times [2024-01-29 14:15:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555548501] [2024-01-29 14:15:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555548501] [2024-01-29 14:15:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555548501] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:15,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:15,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:15:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795647535] [2024-01-29 14:15:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:15:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:15:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:15:15,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 265 [2024-01-29 14:15:15,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 139 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-01-29 14:15:15,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:15,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 265 [2024-01-29 14:15:15,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:18,473 INFO L124 PetriNetUnfolderBase]: 32601/52973 cut-off events. [2024-01-29 14:15:18,473 INFO L125 PetriNetUnfolderBase]: For 5088/5088 co-relation queries the response was YES. [2024-01-29 14:15:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123844 conditions, 52973 events. 32601/52973 cut-off events. For 5088/5088 co-relation queries the response was YES. Maximal size of possible extension queue 4624. Compared 532307 event pairs, 9531 based on Foata normal form. 0/24164 useless extension candidates. Maximal degree in co-relation 123822. Up to 40787 conditions per place. [2024-01-29 14:15:18,752 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 175 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2024-01-29 14:15:18,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 204 transitions, 959 flow [2024-01-29 14:15:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:15:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:15:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2024-01-29 14:15:18,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34465408805031444 [2024-01-29 14:15:18,754 INFO L175 Difference]: Start difference. First operand has 146 places, 139 transitions, 405 flow. Second operand 3 states and 274 transitions. [2024-01-29 14:15:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 204 transitions, 959 flow [2024-01-29 14:15:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 204 transitions, 954 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:15:18,917 INFO L231 Difference]: Finished difference. Result has 146 places, 137 transitions, 420 flow [2024-01-29 14:15:18,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=146, PETRI_TRANSITIONS=137} [2024-01-29 14:15:18,918 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -123 predicate places. [2024-01-29 14:15:18,918 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 137 transitions, 420 flow [2024-01-29 14:15:18,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-01-29 14:15:18,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:18,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:15:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:15:18,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:18,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 537151321, now seen corresponding path program 1 times [2024-01-29 14:15:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:18,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136824607] [2024-01-29 14:15:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136824607] [2024-01-29 14:15:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136824607] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:19,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:19,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:15:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539334158] [2024-01-29 14:15:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:19,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:15:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:15:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:15:19,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 265 [2024-01-29 14:15:19,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 137 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-29 14:15:19,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:19,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 265 [2024-01-29 14:15:19,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:15:22,126 INFO L124 PetriNetUnfolderBase]: 29226/48626 cut-off events. [2024-01-29 14:15:22,127 INFO L125 PetriNetUnfolderBase]: For 11206/11206 co-relation queries the response was YES. [2024-01-29 14:15:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117009 conditions, 48626 events. 29226/48626 cut-off events. For 11206/11206 co-relation queries the response was YES. Maximal size of possible extension queue 3986. Compared 486718 event pairs, 23371 based on Foata normal form. 2562/28441 useless extension candidates. Maximal degree in co-relation 116985. Up to 44409 conditions per place. [2024-01-29 14:15:22,574 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 154 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2024-01-29 14:15:22,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 177 transitions, 866 flow [2024-01-29 14:15:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:15:22,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:15:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2024-01-29 14:15:22,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25566037735849056 [2024-01-29 14:15:22,578 INFO L175 Difference]: Start difference. First operand has 146 places, 137 transitions, 420 flow. Second operand 4 states and 271 transitions. [2024-01-29 14:15:22,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 177 transitions, 866 flow [2024-01-29 14:15:22,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 177 transitions, 860 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:15:22,590 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 402 flow [2024-01-29 14:15:22,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2024-01-29 14:15:22,590 INFO L281 CegarLoopForPetriNet]: 269 programPoint places, -131 predicate places. [2024-01-29 14:15:22,591 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 402 flow [2024-01-29 14:15:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-29 14:15:22,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:15:22,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:15:22,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:15:22,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 389 more)] === [2024-01-29 14:15:22,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:15:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 798787291, now seen corresponding path program 1 times [2024-01-29 14:15:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:15:22,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580051625] [2024-01-29 14:15:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:15:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:15:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:15:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:15:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:15:22,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580051625] [2024-01-29 14:15:22,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580051625] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:15:22,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:15:22,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:15:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020969765] [2024-01-29 14:15:22,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:15:22,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:15:22,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:15:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:15:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:15:22,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 265 [2024-01-29 14:15:22,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-01-29 14:15:22,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:15:22,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 265 [2024-01-29 14:15:22,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand