./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:25:42,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:25:42,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:25:42,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:25:42,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:25:42,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:25:42,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:25:42,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:25:42,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:25:42,296 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:25:42,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:25:42,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:25:42,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:25:42,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:25:42,297 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:25:42,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:25:42,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:25:42,298 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:25:42,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:25:42,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:25:42,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:25:42,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:25:42,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:25:42,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:25:42,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:25:42,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:25:42,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:25:42,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:25:42,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:25:42,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:25:42,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:25:42,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:25:42,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:25:42,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:25:42,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:25:42,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:25:42,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:25:42,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:25:42,304 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:25:42,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:25:42,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:25:42,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:25:42,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:25:42,519 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:25:42,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-05 10:25:43,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:25:43,797 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:25:43,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-02-05 10:25:43,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f299c4a3/d6c49946f7aa462aa884c228264190ba/FLAG23e1815d0 [2024-02-05 10:25:43,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f299c4a3/d6c49946f7aa462aa884c228264190ba [2024-02-05 10:25:43,826 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:25:43,827 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:25:43,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml [2024-02-05 10:25:43,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:25:43,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:25:43,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:25:43,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:25:43,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:25:43,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:25:43" (1/2) ... [2024-02-05 10:25:43,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220ec42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:43, skipping insertion in model container [2024-02-05 10:25:43,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:25:43" (1/2) ... [2024-02-05 10:25:44,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d2ff1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:25:43, skipping insertion in model container [2024-02-05 10:25:44,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:25:43" (2/2) ... [2024-02-05 10:25:44,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220ec42a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44, skipping insertion in model container [2024-02-05 10:25:44,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:25:43" (2/2) ... [2024-02-05 10:25:44,001 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:25:44,183 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:25:44,185 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L712] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,185 INFO L101 nessWitnessExtractor]: Location invariant before [L709-L709] ((((((((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (0 <= lx)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,185 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-02-05 10:25:44,185 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,186 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-02-05 10:25:44,186 INFO L101 nessWitnessExtractor]: Location invariant after [L710-L710] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant before [L711-L711] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant after [L705-L705] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (unsigned long )arg == 0UL [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((((((((((((0 <= l) && (0 <= ly)) && (0 <= lx)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (lx <= 3)) && (lx <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && (lx % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3)) && (lx == 0 || lx == 3) [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-02-05 10:25:44,187 INFO L101 nessWitnessExtractor]: Location invariant before [L703-L703] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L708-L708] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L716-L716] ((((((((((((x == 0) && (y == 0)) && (rwlock.__data.__cur_writer == 0)) && (rwlock.__data.__flags == (unsigned char)0)) && (rwlock.__data.__pad2 == (unsigned char)0)) && (rwlock.__data.__pad3 == 0U)) && (rwlock.__data.__pad4 == 0U)) && (rwlock.__data.__readers == 0U)) && (rwlock.__data.__rwelision == (signed char)0)) && (rwlock.__data.__shared == (unsigned char)0)) && (rwlock.__data.__writers == 0U)) && (rwlock.__data.__writers_futex == 0U)) && (rwlock.__data.__wrphase_futex == 0U) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L707-L707] ((((((((((0 <= l) && (0 <= ly)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L706-L706] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant after [L708-L708] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] (((((0 <= l) && (l <= 3)) && (l <= 127)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (l == 0 || l == 3) [2024-02-05 10:25:44,188 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-02-05 10:25:44,189 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] (((((0 <= y) && (y <= 3)) && (y <= 127)) && (y % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3) [2024-02-05 10:25:44,189 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] (x == 3) && ((unsigned long )arg == 0UL) [2024-02-05 10:25:44,189 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-02-05 10:25:44,189 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (((((0 <= x) && (x <= 3)) && (x <= 127)) && (x % 3 == 0)) && ((unsigned long )arg == 0UL)) && (x == 0 || x == 3) [2024-02-05 10:25:44,189 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-02-05 10:25:44,190 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-02-05 10:25:44,228 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:25:44,504 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-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-02-05 10:25:44,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:25:44,527 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:25:44,622 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-05 10:25:44,622 WARN L424 MainDispatcher]: Unable to annotate ly = y with a witness entry Start Parsing Local Start Parsing Local [2024-02-05 10:25:44,625 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-05 10:25:44,627 WARN L424 MainDispatcher]: Unable to annotate lx = x with a witness entry Start Parsing Local Start Parsing Local [2024-02-05 10:25:44,632 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-atomic/read_write_lock-1-pthread.i[30919,30932] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:25:44,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:25:44,729 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:25:44,730 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44 WrapperNode [2024-02-05 10:25:44,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:25:44,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:25:44,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:25:44,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:25:44,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,824 INFO L138 Inliner]: procedures = 166, calls = 538, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1908 [2024-02-05 10:25:44,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:25:44,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:25:44,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:25:44,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:25:44,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,902 INFO L175 MemorySlicer]: Split 505 memory accesses to 6 slices as follows [2, 2, 495, 2, 2, 2]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11, 0, 0, 0]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2024-02-05 10:25:44,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:25:44,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:25:44,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:25:44,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:25:44,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (1/1) ... [2024-02-05 10:25:44,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:25:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:25:45,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:25:45,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:25:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-02-05 10:25:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:25:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:25:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:25:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:25:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:25:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-05 10:25:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:25:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:25:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:25:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-02-05 10:25:45,079 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:25:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:25:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:25:45,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:25:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-02-05 10:25:45,081 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-02-05 10:25:45,083 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:25:45,325 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:25:45,327 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:25:46,593 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:25:46,593 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:26:03,441 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:26:03,441 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-05 10:26:03,441 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:26:03 BoogieIcfgContainer [2024-02-05 10:26:03,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:26:03,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:26:03,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:26:03,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:26:03,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:25:43" (1/4) ... [2024-02-05 10:26:03,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477fc7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:26:03, skipping insertion in model container [2024-02-05 10:26:03,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:25:43" (2/4) ... [2024-02-05 10:26:03,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477fc7e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:26:03, skipping insertion in model container [2024-02-05 10:26:03,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:25:44" (3/4) ... [2024-02-05 10:26:03,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477fc7e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:26:03, skipping insertion in model container [2024-02-05 10:26:03,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:26:03" (4/4) ... [2024-02-05 10:26:03,448 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-02-05 10:26:03,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:26:03,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-02-05 10:26:03,461 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:26:03,533 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:26:03,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 274 flow [2024-02-05 10:26:04,116 INFO L124 PetriNetUnfolderBase]: 2/119 cut-off events. [2024-02-05 10:26:04,117 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:26:04,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 410 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2024-02-05 10:26:04,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 123 transitions, 274 flow [2024-02-05 10:26:04,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 117 transitions, 255 flow [2024-02-05 10:26:04,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:26:04,167 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;@6325a360, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:26:04,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-02-05 10:26:04,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:26:04,259 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:26:04,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:26:04,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:26:04,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:26:04,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-02-05 10:26:04,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:26:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 126791, now seen corresponding path program 1 times [2024-02-05 10:26:04,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:26:04,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895440440] [2024-02-05 10:26:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:26:04,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:26:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:26:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:26:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:26:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895440440] [2024-02-05 10:26:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895440440] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:26:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:26:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:26:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475705979] [2024-02-05 10:26:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:26:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:26:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:26:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:26:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:26:09,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-02-05 10:26:09,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 117 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:26:09,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:26:09,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-02-05 10:26:09,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:26:18,314 INFO L124 PetriNetUnfolderBase]: 52245/81801 cut-off events. [2024-02-05 10:26:18,314 INFO L125 PetriNetUnfolderBase]: For 2912/2912 co-relation queries the response was YES. [2024-02-05 10:26:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154366 conditions, 81801 events. 52245/81801 cut-off events. For 2912/2912 co-relation queries the response was YES. Maximal size of possible extension queue 2723. Compared 731587 event pairs, 52245 based on Foata normal form. 1874/67385 useless extension candidates. Maximal degree in co-relation 134682. Up to 70095 conditions per place. [2024-02-05 10:26:18,947 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 50 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-02-05 10:26:18,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 112 transitions, 349 flow [2024-02-05 10:26:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:26:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:26:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-02-05 10:26:18,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6747967479674797 [2024-02-05 10:26:18,964 INFO L175 Difference]: Start difference. First operand has 128 places, 117 transitions, 255 flow. Second operand 3 states and 249 transitions. [2024-02-05 10:26:18,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 112 transitions, 349 flow [2024-02-05 10:26:19,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 112 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:26:19,230 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 236 flow [2024-02-05 10:26:19,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2024-02-05 10:26:19,234 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2024-02-05 10:26:19,234 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 236 flow [2024-02-05 10:26:19,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:26:19,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:26:19,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:26:19,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:26:19,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [readerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr1ASSERT_VIOLATIONWITNESS_INVARIANT, readerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 62 more)] === [2024-02-05 10:26:19,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:26:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -513667298, now seen corresponding path program 1 times [2024-02-05 10:26:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:26:19,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083475507] [2024-02-05 10:26:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:26:19,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:26:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:26:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:26:20,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:26:20,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083475507] [2024-02-05 10:26:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083475507] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:26:20,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:26:20,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:26:20,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396538859] [2024-02-05 10:26:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:26:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:26:20,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:26:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:26:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:26:20,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2024-02-05 10:26:20,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:26:20,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:26:20,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2024-02-05 10:26:20,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand