./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/safe022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/safe022_tso.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/safe022_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:47:00,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:47:00,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:47:00,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:47:00,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:47:00,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:47:00,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:47:00,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:47:00,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:47:00,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:47:00,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:47:00,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:47:00,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:47:00,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:47:00,992 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:47:00,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:47:00,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:47:00,993 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:47:00,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:47:00,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:47:00,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:47:00,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:47:00,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:47:00,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:47:00,996 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:47:00,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:47:00,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:47:00,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:47:00,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:47:00,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:47:00,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:47:00,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:47:00,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:47:00,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:47:00,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:47:01,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:47:01,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:47:01,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:47:01,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:47:01,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:47:01,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:47:01,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:47:01,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:47:01,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:47:01,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:47:01,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:47:01,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:47:01,246 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:47:01,250 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:47:01,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/safe022_tso.yml/witness.yml [2024-06-03 20:47:01,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:47:01,395 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:47:01,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-06-03 20:47:02,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:47:02,760 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:47:02,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-06-03 20:47:02,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57651761/6247dae0809c4d69952994912fa50523/FLAGc56351829 [2024-06-03 20:47:02,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57651761/6247dae0809c4d69952994912fa50523 [2024-06-03 20:47:02,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:47:02,792 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:47:02,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:47:02,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:47:02,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:47:02,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:47:01" (1/2) ... [2024-06-03 20:47:02,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ffd2c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:47:02, skipping insertion in model container [2024-06-03 20:47:02,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:47:01" (1/2) ... [2024-06-03 20:47:02,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4882b769 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:47:02, skipping insertion in model container [2024-06-03 20:47:02,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:47:02" (2/2) ... [2024-06-03 20:47:02,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ffd2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:02, skipping insertion in model container [2024-06-03 20:47:02,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:47:02" (2/2) ... [2024-06-03 20:47:02,811 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:47:02,843 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:47:02,844 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((((! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (1LL + (long long )x) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )x) - (long long )y >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-03 20:47:02,844 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((((! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (1LL + (long long )x) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )x) - (long long )y >= 0LL))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && y <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-03 20:47:02,844 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:47:02,845 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-03 20:47:02,890 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:47:03,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:47:03,217 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:47:03,323 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:47:03,358 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:47:03,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03 WrapperNode [2024-06-03 20:47:03,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:47:03,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:47:03,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:47:03,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:47:03,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,435 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-06-03 20:47:03,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:47:03,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:47:03,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:47:03,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:47:03,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,467 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 20:47:03,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:47:03,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:47:03,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:47:03,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:47:03,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (1/1) ... [2024-06-03 20:47:03,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:47:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:47:03,518 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) [2024-06-03 20:47:03,538 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 [2024-06-03 20:47:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:47:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:47:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 20:47:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 20:47:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 20:47:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 20:47:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:47:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:47:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:47:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:47:03,564 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:47:03,689 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:47:03,691 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:47:03,895 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:47:03,896 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:47:03,985 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:47:03,986 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:47:03,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:47:03 BoogieIcfgContainer [2024-06-03 20:47:03,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:47:03,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:47:03,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:47:03,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:47:03,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:47:01" (1/4) ... [2024-06-03 20:47:03,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a054fd4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:47:03, skipping insertion in model container [2024-06-03 20:47:03,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:47:02" (2/4) ... [2024-06-03 20:47:03,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a054fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:47:03, skipping insertion in model container [2024-06-03 20:47:03,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:47:03" (3/4) ... [2024-06-03 20:47:03,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a054fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:47:03, skipping insertion in model container [2024-06-03 20:47:03,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:47:03" (4/4) ... [2024-06-03 20:47:03,995 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2024-06-03 20:47:04,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:47:04,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:47:04,010 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:47:04,055 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 20:47:04,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 20:47:04,123 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-03 20:47:04,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:47:04,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 20:47:04,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 20:47:04,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-03 20:47:04,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:47:04,146 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;@b48d3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:47:04,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:47:04,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:47:04,151 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:47:04,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:47:04,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:04,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:47:04,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:04,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1558221865, now seen corresponding path program 1 times [2024-06-03 20:47:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174732400] [2024-06-03 20:47:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:04,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174732400] [2024-06-03 20:47:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174732400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:04,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:47:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718274062] [2024-06-03 20:47:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:04,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:47:04,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:47:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:47:04,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-03 20:47:04,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-03 20:47:04,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:04,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-03 20:47:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:04,891 INFO L124 PetriNetUnfolderBase]: 65/143 cut-off events. [2024-06-03 20:47:04,891 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 20:47:04,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 143 events. 65/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 497 event pairs, 33 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 276. Up to 124 conditions per place. [2024-06-03 20:47:04,895 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 19 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-03 20:47:04,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 109 flow [2024-06-03 20:47:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:47:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:47:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-03 20:47:04,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-03 20:47:04,906 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 60 transitions. [2024-06-03 20:47:04,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 109 flow [2024-06-03 20:47:04,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:47:04,910 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-03 20:47:04,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-03 20:47:04,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-03 20:47:04,915 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-03 20:47:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-03 20:47:04,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:04,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:04,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:47:04,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:04,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1492255198, now seen corresponding path program 1 times [2024-06-03 20:47:04,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:04,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887292849] [2024-06-03 20:47:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:05,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887292849] [2024-06-03 20:47:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887292849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:05,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:05,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:47:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101930310] [2024-06-03 20:47:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:05,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:47:05,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:47:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:47:05,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-06-03 20:47:05,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-06-03 20:47:05,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:05,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-06-03 20:47:05,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:05,401 INFO L124 PetriNetUnfolderBase]: 82/178 cut-off events. [2024-06-03 20:47:05,402 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-03 20:47:05,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 178 events. 82/178 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 635 event pairs, 34 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 396. Up to 144 conditions per place. [2024-06-03 20:47:05,404 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 20:47:05,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 162 flow [2024-06-03 20:47:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:47:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:47:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-06-03 20:47:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-03 20:47:05,406 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 75 transitions. [2024-06-03 20:47:05,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 162 flow [2024-06-03 20:47:05,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:47:05,410 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 102 flow [2024-06-03 20:47:05,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-03 20:47:05,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-03 20:47:05,411 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 102 flow [2024-06-03 20:47:05,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-06-03 20:47:05,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:05,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:47:05,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:05,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash 982049000, now seen corresponding path program 1 times [2024-06-03 20:47:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005441042] [2024-06-03 20:47:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:05,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005441042] [2024-06-03 20:47:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005441042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:47:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704151928] [2024-06-03 20:47:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:47:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:47:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:47:05,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:05,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-06-03 20:47:05,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:05,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:05,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:05,804 INFO L124 PetriNetUnfolderBase]: 97/203 cut-off events. [2024-06-03 20:47:05,804 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-06-03 20:47:05,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 203 events. 97/203 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 717 event pairs, 28 based on Foata normal form. 2/204 useless extension candidates. Maximal degree in co-relation 518. Up to 161 conditions per place. [2024-06-03 20:47:05,806 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-06-03 20:47:05,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 237 flow [2024-06-03 20:47:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:47:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:47:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-03 20:47:05,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-03 20:47:05,808 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 102 flow. Second operand 5 states and 88 transitions. [2024-06-03 20:47:05,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 237 flow [2024-06-03 20:47:05,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 20:47:05,809 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 158 flow [2024-06-03 20:47:05,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-03 20:47:05,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-03 20:47:05,810 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 158 flow [2024-06-03 20:47:05,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2024-06-03 20:47:05,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:05,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:47:05,811 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:05,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1143680793, now seen corresponding path program 1 times [2024-06-03 20:47:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:05,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131471809] [2024-06-03 20:47:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:06,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:06,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131471809] [2024-06-03 20:47:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131471809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:06,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:06,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:06,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063408337] [2024-06-03 20:47:06,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:06,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:06,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-06-03 20:47:06,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:06,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:06,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:06,162 INFO L124 PetriNetUnfolderBase]: 93/195 cut-off events. [2024-06-03 20:47:06,163 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-06-03 20:47:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 195 events. 93/195 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 682 event pairs, 12 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 573. Up to 135 conditions per place. [2024-06-03 20:47:06,170 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-03 20:47:06,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 270 flow [2024-06-03 20:47:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-03 20:47:06,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-03 20:47:06,174 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 158 flow. Second operand 6 states and 99 transitions. [2024-06-03 20:47:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 270 flow [2024-06-03 20:47:06,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 20:47:06,178 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 170 flow [2024-06-03 20:47:06,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-06-03 20:47:06,179 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-03 20:47:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 170 flow [2024-06-03 20:47:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-06-03 20:47:06,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:06,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:06,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:47:06,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1139486920, now seen corresponding path program 1 times [2024-06-03 20:47:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450149185] [2024-06-03 20:47:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:06,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:06,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450149185] [2024-06-03 20:47:06,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450149185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:06,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:06,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:06,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641404237] [2024-06-03 20:47:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:06,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:06,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:06,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:06,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:06,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:06,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:06,664 INFO L124 PetriNetUnfolderBase]: 96/204 cut-off events. [2024-06-03 20:47:06,664 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-06-03 20:47:06,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 204 events. 96/204 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 729 event pairs, 24 based on Foata normal form. 1/204 useless extension candidates. Maximal degree in co-relation 637. Up to 143 conditions per place. [2024-06-03 20:47:06,665 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-03 20:47:06,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 322 flow [2024-06-03 20:47:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-03 20:47:06,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-03 20:47:06,667 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 170 flow. Second operand 6 states and 103 transitions. [2024-06-03 20:47:06,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 322 flow [2024-06-03 20:47:06,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 301 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:06,671 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 200 flow [2024-06-03 20:47:06,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-03 20:47:06,676 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-03 20:47:06,676 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 200 flow [2024-06-03 20:47:06,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:06,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:06,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:47:06,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:06,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1139607076, now seen corresponding path program 1 times [2024-06-03 20:47:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:06,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279614789] [2024-06-03 20:47:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:06,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:06,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:06,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279614789] [2024-06-03 20:47:06,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279614789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:06,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:06,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:06,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743551191] [2024-06-03 20:47:06,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:06,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:06,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:07,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:07,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:07,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:07,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:07,089 INFO L124 PetriNetUnfolderBase]: 102/214 cut-off events. [2024-06-03 20:47:07,089 INFO L125 PetriNetUnfolderBase]: For 450/450 co-relation queries the response was YES. [2024-06-03 20:47:07,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 214 events. 102/214 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 772 event pairs, 24 based on Foata normal form. 1/214 useless extension candidates. Maximal degree in co-relation 711. Up to 156 conditions per place. [2024-06-03 20:47:07,091 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2024-06-03 20:47:07,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 368 flow [2024-06-03 20:47:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-03 20:47:07,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-06-03 20:47:07,092 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 200 flow. Second operand 6 states and 101 transitions. [2024-06-03 20:47:07,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 368 flow [2024-06-03 20:47:07,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 342 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:07,094 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 248 flow [2024-06-03 20:47:07,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-03 20:47:07,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-03 20:47:07,095 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 248 flow [2024-06-03 20:47:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:47:07,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:07,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2081455280, now seen corresponding path program 2 times [2024-06-03 20:47:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842365502] [2024-06-03 20:47:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842365502] [2024-06-03 20:47:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842365502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885408649] [2024-06-03 20:47:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:07,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:07,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:07,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:07,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:07,495 INFO L124 PetriNetUnfolderBase]: 105/223 cut-off events. [2024-06-03 20:47:07,496 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-06-03 20:47:07,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 223 events. 105/223 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 818 event pairs, 23 based on Foata normal form. 1/223 useless extension candidates. Maximal degree in co-relation 772. Up to 170 conditions per place. [2024-06-03 20:47:07,497 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 39 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-06-03 20:47:07,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 384 flow [2024-06-03 20:47:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-03 20:47:07,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-03 20:47:07,499 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 248 flow. Second operand 6 states and 98 transitions. [2024-06-03 20:47:07,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 384 flow [2024-06-03 20:47:07,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 373 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-03 20:47:07,501 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 280 flow [2024-06-03 20:47:07,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-03 20:47:07,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-03 20:47:07,502 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 280 flow [2024-06-03 20:47:07,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:07,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:47:07,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:07,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash 123017922, now seen corresponding path program 2 times [2024-06-03 20:47:07,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:07,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548137345] [2024-06-03 20:47:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548137345] [2024-06-03 20:47:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548137345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:07,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:07,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644904592] [2024-06-03 20:47:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:07,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:07,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:07,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:07,849 INFO L124 PetriNetUnfolderBase]: 108/228 cut-off events. [2024-06-03 20:47:07,850 INFO L125 PetriNetUnfolderBase]: For 709/709 co-relation queries the response was YES. [2024-06-03 20:47:07,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 228 events. 108/228 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 856 event pairs, 24 based on Foata normal form. 1/228 useless extension candidates. Maximal degree in co-relation 839. Up to 165 conditions per place. [2024-06-03 20:47:07,851 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 37 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-03 20:47:07,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 436 flow [2024-06-03 20:47:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:47:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:47:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-03 20:47:07,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-03 20:47:07,853 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 280 flow. Second operand 5 states and 88 transitions. [2024-06-03 20:47:07,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 436 flow [2024-06-03 20:47:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 407 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:07,855 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 303 flow [2024-06-03 20:47:07,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-03 20:47:07,856 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-03 20:47:07,856 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 303 flow [2024-06-03 20:47:07,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:07,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:07,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:07,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:47:07,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:07,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash 123024432, now seen corresponding path program 3 times [2024-06-03 20:47:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347477070] [2024-06-03 20:47:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347477070] [2024-06-03 20:47:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347477070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077773627] [2024-06-03 20:47:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:08,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:08,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:08,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:08,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:08,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:08,229 INFO L124 PetriNetUnfolderBase]: 106/225 cut-off events. [2024-06-03 20:47:08,229 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2024-06-03 20:47:08,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 225 events. 106/225 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 839 event pairs, 24 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 848. Up to 169 conditions per place. [2024-06-03 20:47:08,230 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 39 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-06-03 20:47:08,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 425 flow [2024-06-03 20:47:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:47:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:47:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-03 20:47:08,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-03 20:47:08,245 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 303 flow. Second operand 4 states and 74 transitions. [2024-06-03 20:47:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 425 flow [2024-06-03 20:47:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 398 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:08,247 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 312 flow [2024-06-03 20:47:08,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-03 20:47:08,248 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-03 20:47:08,248 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 312 flow [2024-06-03 20:47:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:08,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:08,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:08,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:47:08,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:08,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash 123017736, now seen corresponding path program 3 times [2024-06-03 20:47:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783524430] [2024-06-03 20:47:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:08,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783524430] [2024-06-03 20:47:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783524430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:08,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111563033] [2024-06-03 20:47:08,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:08,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:08,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:08,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:08,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:08,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:08,670 INFO L124 PetriNetUnfolderBase]: 104/222 cut-off events. [2024-06-03 20:47:08,670 INFO L125 PetriNetUnfolderBase]: For 838/838 co-relation queries the response was YES. [2024-06-03 20:47:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 222 events. 104/222 cut-off events. For 838/838 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 821 event pairs, 23 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 841. Up to 157 conditions per place. [2024-06-03 20:47:08,672 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-03 20:47:08,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 452 flow [2024-06-03 20:47:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:47:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:47:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-03 20:47:08,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-06-03 20:47:08,674 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 312 flow. Second operand 5 states and 89 transitions. [2024-06-03 20:47:08,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 452 flow [2024-06-03 20:47:08,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:08,680 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 329 flow [2024-06-03 20:47:08,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-03 20:47:08,681 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-03 20:47:08,681 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 329 flow [2024-06-03 20:47:08,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:08,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:08,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:47:08,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:08,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 123264000, now seen corresponding path program 1 times [2024-06-03 20:47:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424582158] [2024-06-03 20:47:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424582158] [2024-06-03 20:47:08,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424582158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:08,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:08,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:47:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306928369] [2024-06-03 20:47:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:47:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:47:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:47:08,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:08,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:08,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:08,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:09,016 INFO L124 PetriNetUnfolderBase]: 101/217 cut-off events. [2024-06-03 20:47:09,016 INFO L125 PetriNetUnfolderBase]: For 990/990 co-relation queries the response was YES. [2024-06-03 20:47:09,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 217 events. 101/217 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 792 event pairs, 23 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 850. Up to 173 conditions per place. [2024-06-03 20:47:09,018 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 43 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-03 20:47:09,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 441 flow [2024-06-03 20:47:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:47:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:47:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-03 20:47:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-03 20:47:09,019 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 329 flow. Second operand 4 states and 68 transitions. [2024-06-03 20:47:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 441 flow [2024-06-03 20:47:09,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 409 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 20:47:09,021 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 313 flow [2024-06-03 20:47:09,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-03 20:47:09,022 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-03 20:47:09,022 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 313 flow [2024-06-03 20:47:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-03 20:47:09,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:09,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:47:09,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:09,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 96885738, now seen corresponding path program 1 times [2024-06-03 20:47:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648646625] [2024-06-03 20:47:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648646625] [2024-06-03 20:47:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648646625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829707051] [2024-06-03 20:47:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:09,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:09,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:09,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:09,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:09,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:09,411 INFO L124 PetriNetUnfolderBase]: 104/222 cut-off events. [2024-06-03 20:47:09,411 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-03 20:47:09,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 222 events. 104/222 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 823 event pairs, 22 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 850. Up to 127 conditions per place. [2024-06-03 20:47:09,413 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 24 changer transitions 0/66 dead transitions. [2024-06-03 20:47:09,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 515 flow [2024-06-03 20:47:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-03 20:47:09,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-03 20:47:09,414 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 313 flow. Second operand 7 states and 119 transitions. [2024-06-03 20:47:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 515 flow [2024-06-03 20:47:09,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 503 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:47:09,417 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 382 flow [2024-06-03 20:47:09,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-03 20:47:09,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 20:47:09,418 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 382 flow [2024-06-03 20:47:09,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:09,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:09,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:09,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:47:09,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:09,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 100604808, now seen corresponding path program 2 times [2024-06-03 20:47:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404954860] [2024-06-03 20:47:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404954860] [2024-06-03 20:47:09,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404954860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:09,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382420105] [2024-06-03 20:47:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:09,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:09,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:09,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:09,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:09,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:09,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:09,824 INFO L124 PetriNetUnfolderBase]: 112/239 cut-off events. [2024-06-03 20:47:09,824 INFO L125 PetriNetUnfolderBase]: For 1211/1211 co-relation queries the response was YES. [2024-06-03 20:47:09,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 239 events. 112/239 cut-off events. For 1211/1211 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 934 event pairs, 22 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 989. Up to 163 conditions per place. [2024-06-03 20:47:09,826 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 21 changer transitions 0/67 dead transitions. [2024-06-03 20:47:09,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 588 flow [2024-06-03 20:47:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-03 20:47:09,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-03 20:47:09,827 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 382 flow. Second operand 7 states and 116 transitions. [2024-06-03 20:47:09,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 588 flow [2024-06-03 20:47:09,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 554 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:09,831 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 431 flow [2024-06-03 20:47:09,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-03 20:47:09,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-03 20:47:09,832 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 431 flow [2024-06-03 20:47:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:09,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:09,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:09,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:47:09,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 968081370, now seen corresponding path program 3 times [2024-06-03 20:47:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030683993] [2024-06-03 20:47:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:09,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:10,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030683993] [2024-06-03 20:47:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030683993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:10,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:10,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435109244] [2024-06-03 20:47:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:10,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:10,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:10,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:10,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:10,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:10,233 INFO L124 PetriNetUnfolderBase]: 110/236 cut-off events. [2024-06-03 20:47:10,233 INFO L125 PetriNetUnfolderBase]: For 1333/1333 co-relation queries the response was YES. [2024-06-03 20:47:10,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 236 events. 110/236 cut-off events. For 1333/1333 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 915 event pairs, 22 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 1010. Up to 161 conditions per place. [2024-06-03 20:47:10,235 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 22 changer transitions 0/68 dead transitions. [2024-06-03 20:47:10,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 589 flow [2024-06-03 20:47:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:47:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:47:10,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-03 20:47:10,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2024-06-03 20:47:10,237 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 431 flow. Second operand 9 states and 139 transitions. [2024-06-03 20:47:10,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 589 flow [2024-06-03 20:47:10,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 560 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:10,240 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 451 flow [2024-06-03 20:47:10,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=451, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-06-03 20:47:10,241 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-03 20:47:10,241 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 451 flow [2024-06-03 20:47:10,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:10,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:10,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:10,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:47:10,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:10,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash -481411332, now seen corresponding path program 4 times [2024-06-03 20:47:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398233358] [2024-06-03 20:47:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:10,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398233358] [2024-06-03 20:47:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398233358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467318223] [2024-06-03 20:47:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:10,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:10,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:10,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:10,635 INFO L124 PetriNetUnfolderBase]: 118/253 cut-off events. [2024-06-03 20:47:10,635 INFO L125 PetriNetUnfolderBase]: For 1607/1607 co-relation queries the response was YES. [2024-06-03 20:47:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 253 events. 118/253 cut-off events. For 1607/1607 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1009 event pairs, 22 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 1131. Up to 151 conditions per place. [2024-06-03 20:47:10,638 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 40 selfloop transitions, 32 changer transitions 0/76 dead transitions. [2024-06-03 20:47:10,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 719 flow [2024-06-03 20:47:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-03 20:47:10,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-06-03 20:47:10,639 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 451 flow. Second operand 8 states and 133 transitions. [2024-06-03 20:47:10,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 719 flow [2024-06-03 20:47:10,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 670 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 20:47:10,644 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 510 flow [2024-06-03 20:47:10,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-03 20:47:10,645 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-03 20:47:10,645 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 510 flow [2024-06-03 20:47:10,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:10,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:10,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:10,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:47:10,646 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:10,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash -481416912, now seen corresponding path program 5 times [2024-06-03 20:47:10,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:10,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933937721] [2024-06-03 20:47:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:10,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:10,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:10,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933937721] [2024-06-03 20:47:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933937721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836787099] [2024-06-03 20:47:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:10,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:10,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:10,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:10,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:10,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:11,013 INFO L124 PetriNetUnfolderBase]: 116/250 cut-off events. [2024-06-03 20:47:11,013 INFO L125 PetriNetUnfolderBase]: For 1773/1773 co-relation queries the response was YES. [2024-06-03 20:47:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 250 events. 116/250 cut-off events. For 1773/1773 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 998 event pairs, 22 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 1148. Up to 149 conditions per place. [2024-06-03 20:47:11,015 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 30 changer transitions 0/73 dead transitions. [2024-06-03 20:47:11,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 708 flow [2024-06-03 20:47:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-03 20:47:11,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-03 20:47:11,016 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 510 flow. Second operand 6 states and 106 transitions. [2024-06-03 20:47:11,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 708 flow [2024-06-03 20:47:11,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 629 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 20:47:11,021 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 501 flow [2024-06-03 20:47:11,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-06-03 20:47:11,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-03 20:47:11,021 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 501 flow [2024-06-03 20:47:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:11,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:11,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:11,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:47:11,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:11,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash -474059682, now seen corresponding path program 6 times [2024-06-03 20:47:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320385733] [2024-06-03 20:47:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:11,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320385733] [2024-06-03 20:47:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320385733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:11,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:11,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959361949] [2024-06-03 20:47:11,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:11,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:11,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:11,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:11,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:11,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:11,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:11,399 INFO L124 PetriNetUnfolderBase]: 114/247 cut-off events. [2024-06-03 20:47:11,399 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-06-03 20:47:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 247 events. 114/247 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 989 event pairs, 22 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 1112. Up to 171 conditions per place. [2024-06-03 20:47:11,402 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 50 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-03 20:47:11,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 665 flow [2024-06-03 20:47:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:47:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:47:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-03 20:47:11,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-06-03 20:47:11,403 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 501 flow. Second operand 5 states and 92 transitions. [2024-06-03 20:47:11,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 665 flow [2024-06-03 20:47:11,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 598 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 20:47:11,408 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 479 flow [2024-06-03 20:47:11,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2024-06-03 20:47:11,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-03 20:47:11,409 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 479 flow [2024-06-03 20:47:11,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:11,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:11,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:11,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:47:11,410 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:11,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1294370739, now seen corresponding path program 1 times [2024-06-03 20:47:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699599520] [2024-06-03 20:47:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699599520] [2024-06-03 20:47:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699599520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:11,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:11,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800111912] [2024-06-03 20:47:11,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:11,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:11,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:11,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:11,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:11,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:11,805 INFO L124 PetriNetUnfolderBase]: 118/255 cut-off events. [2024-06-03 20:47:11,805 INFO L125 PetriNetUnfolderBase]: For 1702/1702 co-relation queries the response was YES. [2024-06-03 20:47:11,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 255 events. 118/255 cut-off events. For 1702/1702 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1019 event pairs, 8 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 1115. Up to 140 conditions per place. [2024-06-03 20:47:11,807 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 54 selfloop transitions, 19 changer transitions 0/77 dead transitions. [2024-06-03 20:47:11,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 695 flow [2024-06-03 20:47:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-03 20:47:11,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-03 20:47:11,808 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 479 flow. Second operand 7 states and 115 transitions. [2024-06-03 20:47:11,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 695 flow [2024-06-03 20:47:11,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 646 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:11,813 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 476 flow [2024-06-03 20:47:11,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2024-06-03 20:47:11,813 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-03 20:47:11,813 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 476 flow [2024-06-03 20:47:11,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:11,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:11,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:11,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:47:11,814 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:11,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1294310289, now seen corresponding path program 2 times [2024-06-03 20:47:11,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704670302] [2024-06-03 20:47:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:11,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704670302] [2024-06-03 20:47:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704670302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:12,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652123697] [2024-06-03 20:47:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:12,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:12,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:12,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:12,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:12,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:12,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:12,216 INFO L124 PetriNetUnfolderBase]: 122/263 cut-off events. [2024-06-03 20:47:12,217 INFO L125 PetriNetUnfolderBase]: For 1860/1860 co-relation queries the response was YES. [2024-06-03 20:47:12,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 263 events. 122/263 cut-off events. For 1860/1860 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1065 event pairs, 19 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 1153. Up to 181 conditions per place. [2024-06-03 20:47:12,219 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 54 selfloop transitions, 18 changer transitions 0/76 dead transitions. [2024-06-03 20:47:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 662 flow [2024-06-03 20:47:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-03 20:47:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-03 20:47:12,220 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 476 flow. Second operand 7 states and 115 transitions. [2024-06-03 20:47:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 662 flow [2024-06-03 20:47:12,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 625 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 20:47:12,226 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 487 flow [2024-06-03 20:47:12,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2024-06-03 20:47:12,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-03 20:47:12,226 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 487 flow [2024-06-03 20:47:12,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:12,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:12,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:12,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:47:12,227 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:12,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1176222609, now seen corresponding path program 3 times [2024-06-03 20:47:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362160261] [2024-06-03 20:47:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362160261] [2024-06-03 20:47:12,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362160261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172834619] [2024-06-03 20:47:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:12,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:12,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:12,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 487 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:12,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:12,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:12,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:12,615 INFO L124 PetriNetUnfolderBase]: 126/271 cut-off events. [2024-06-03 20:47:12,615 INFO L125 PetriNetUnfolderBase]: For 2039/2039 co-relation queries the response was YES. [2024-06-03 20:47:12,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 271 events. 126/271 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1106 event pairs, 19 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 1184. Up to 204 conditions per place. [2024-06-03 20:47:12,617 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 57 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-03 20:47:12,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 660 flow [2024-06-03 20:47:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-03 20:47:12,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-06-03 20:47:12,618 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 487 flow. Second operand 7 states and 111 transitions. [2024-06-03 20:47:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 660 flow [2024-06-03 20:47:12,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 624 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:12,625 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 488 flow [2024-06-03 20:47:12,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=488, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-06-03 20:47:12,625 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-03 20:47:12,625 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 488 flow [2024-06-03 20:47:12,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:12,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:12,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:12,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:47:12,626 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:12,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -54241245, now seen corresponding path program 1 times [2024-06-03 20:47:12,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:12,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931598486] [2024-06-03 20:47:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:12,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931598486] [2024-06-03 20:47:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931598486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:12,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809741361] [2024-06-03 20:47:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:12,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:12,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 488 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:12,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:12,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:12,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:12,991 INFO L124 PetriNetUnfolderBase]: 130/279 cut-off events. [2024-06-03 20:47:12,991 INFO L125 PetriNetUnfolderBase]: For 2232/2232 co-relation queries the response was YES. [2024-06-03 20:47:12,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 279 events. 130/279 cut-off events. For 2232/2232 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1150 event pairs, 20 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 1213. Up to 203 conditions per place. [2024-06-03 20:47:12,993 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 54 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-06-03 20:47:12,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 664 flow [2024-06-03 20:47:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-03 20:47:12,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-03 20:47:12,996 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 488 flow. Second operand 7 states and 113 transitions. [2024-06-03 20:47:12,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 664 flow [2024-06-03 20:47:13,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 638 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:13,002 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 508 flow [2024-06-03 20:47:13,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2024-06-03 20:47:13,003 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-03 20:47:13,003 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 508 flow [2024-06-03 20:47:13,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:13,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:13,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:47:13,005 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:13,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2039026745, now seen corresponding path program 4 times [2024-06-03 20:47:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461134213] [2024-06-03 20:47:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:13,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:13,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461134213] [2024-06-03 20:47:13,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461134213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:13,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:13,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051317777] [2024-06-03 20:47:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:13,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:13,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:13,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:13,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:13,416 INFO L124 PetriNetUnfolderBase]: 127/274 cut-off events. [2024-06-03 20:47:13,416 INFO L125 PetriNetUnfolderBase]: For 2204/2204 co-relation queries the response was YES. [2024-06-03 20:47:13,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 274 events. 127/274 cut-off events. For 2204/2204 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1131 event pairs, 7 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 1193. Up to 171 conditions per place. [2024-06-03 20:47:13,418 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 55 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-03 20:47:13,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 77 transitions, 688 flow [2024-06-03 20:47:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-03 20:47:13,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-03 20:47:13,419 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 508 flow. Second operand 6 states and 102 transitions. [2024-06-03 20:47:13,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 77 transitions, 688 flow [2024-06-03 20:47:13,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 652 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:13,427 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 516 flow [2024-06-03 20:47:13,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-06-03 20:47:13,427 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-03 20:47:13,427 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 516 flow [2024-06-03 20:47:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:13,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:13,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:47:13,428 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:13,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1802666687, now seen corresponding path program 2 times [2024-06-03 20:47:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:13,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532185251] [2024-06-03 20:47:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:13,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:13,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532185251] [2024-06-03 20:47:13,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532185251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:13,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:13,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:13,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386244408] [2024-06-03 20:47:13,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:13,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:13,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:13,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:13,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:13,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:13,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 516 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:13,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:13,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:13,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:13,812 INFO L124 PetriNetUnfolderBase]: 131/282 cut-off events. [2024-06-03 20:47:13,812 INFO L125 PetriNetUnfolderBase]: For 2516/2516 co-relation queries the response was YES. [2024-06-03 20:47:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 282 events. 131/282 cut-off events. For 2516/2516 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1171 event pairs, 21 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1246. Up to 212 conditions per place. [2024-06-03 20:47:13,814 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 57 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-03 20:47:13,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 74 transitions, 688 flow [2024-06-03 20:47:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:47:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:47:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-03 20:47:13,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-03 20:47:13,815 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 516 flow. Second operand 5 states and 87 transitions. [2024-06-03 20:47:13,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 74 transitions, 688 flow [2024-06-03 20:47:13,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 642 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 20:47:13,821 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 510 flow [2024-06-03 20:47:13,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-06-03 20:47:13,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-03 20:47:13,822 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 510 flow [2024-06-03 20:47:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:13,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:13,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:13,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:47:13,823 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:13,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1802370017, now seen corresponding path program 3 times [2024-06-03 20:47:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491081211] [2024-06-03 20:47:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:14,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:14,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491081211] [2024-06-03 20:47:14,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491081211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:14,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:14,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:14,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849852662] [2024-06-03 20:47:14,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:14,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:14,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:14,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:14,175 INFO L124 PetriNetUnfolderBase]: 135/290 cut-off events. [2024-06-03 20:47:14,175 INFO L125 PetriNetUnfolderBase]: For 2260/2260 co-relation queries the response was YES. [2024-06-03 20:47:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 290 events. 135/290 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1219 event pairs, 19 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 1251. Up to 206 conditions per place. [2024-06-03 20:47:14,177 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 58 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-03 20:47:14,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 77 transitions, 694 flow [2024-06-03 20:47:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-03 20:47:14,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-03 20:47:14,178 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 510 flow. Second operand 6 states and 100 transitions. [2024-06-03 20:47:14,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 77 transitions, 694 flow [2024-06-03 20:47:14,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 664 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 20:47:14,183 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 526 flow [2024-06-03 20:47:14,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-06-03 20:47:14,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-03 20:47:14,184 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 526 flow [2024-06-03 20:47:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:14,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:14,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:14,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:47:14,185 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:14,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2038842047, now seen corresponding path program 4 times [2024-06-03 20:47:14,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:14,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599094384] [2024-06-03 20:47:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:14,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599094384] [2024-06-03 20:47:14,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599094384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:14,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:14,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:47:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663031058] [2024-06-03 20:47:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:14,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:47:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:47:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:47:14,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:14,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:14,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:14,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:14,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:14,576 INFO L124 PetriNetUnfolderBase]: 132/285 cut-off events. [2024-06-03 20:47:14,576 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-06-03 20:47:14,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 285 events. 132/285 cut-off events. For 2170/2170 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1192 event pairs, 20 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 1213. Up to 203 conditions per place. [2024-06-03 20:47:14,579 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 54 selfloop transitions, 18 changer transitions 0/76 dead transitions. [2024-06-03 20:47:14,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 696 flow [2024-06-03 20:47:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-03 20:47:14,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-03 20:47:14,580 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 526 flow. Second operand 6 states and 100 transitions. [2024-06-03 20:47:14,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 696 flow [2024-06-03 20:47:14,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 660 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 20:47:14,589 INFO L231 Difference]: Finished difference. Result has 87 places, 65 transitions, 532 flow [2024-06-03 20:47:14,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=87, PETRI_TRANSITIONS=65} [2024-06-03 20:47:14,590 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-03 20:47:14,590 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 65 transitions, 532 flow [2024-06-03 20:47:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-03 20:47:14,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:14,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:47:14,591 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:14,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1470786677, now seen corresponding path program 1 times [2024-06-03 20:47:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429633809] [2024-06-03 20:47:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429633809] [2024-06-03 20:47:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429633809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:14,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:14,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458675748] [2024-06-03 20:47:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:14,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:14,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 65 transitions, 532 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:14,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:14,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:14,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:14,929 INFO L124 PetriNetUnfolderBase]: 155/342 cut-off events. [2024-06-03 20:47:14,929 INFO L125 PetriNetUnfolderBase]: For 4150/4150 co-relation queries the response was YES. [2024-06-03 20:47:14,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 342 events. 155/342 cut-off events. For 4150/4150 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1514 event pairs, 29 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 1469. Up to 118 conditions per place. [2024-06-03 20:47:14,932 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 29 changer transitions 12/88 dead transitions. [2024-06-03 20:47:14,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 800 flow [2024-06-03 20:47:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-03 20:47:14,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-03 20:47:14,933 INFO L175 Difference]: Start difference. First operand has 87 places, 65 transitions, 532 flow. Second operand 8 states and 134 transitions. [2024-06-03 20:47:14,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 800 flow [2024-06-03 20:47:14,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 742 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-03 20:47:14,941 INFO L231 Difference]: Finished difference. Result has 90 places, 62 transitions, 512 flow [2024-06-03 20:47:14,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2024-06-03 20:47:14,942 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-03 20:47:14,942 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 512 flow [2024-06-03 20:47:14,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:14,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:14,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:14,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:47:14,942 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:14,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1382073047, now seen corresponding path program 2 times [2024-06-03 20:47:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:14,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330874338] [2024-06-03 20:47:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330874338] [2024-06-03 20:47:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330874338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944581704] [2024-06-03 20:47:15,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:15,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:15,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:15,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:15,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:15,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:15,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:15,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:15,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:15,359 INFO L124 PetriNetUnfolderBase]: 143/320 cut-off events. [2024-06-03 20:47:15,359 INFO L125 PetriNetUnfolderBase]: For 4487/4487 co-relation queries the response was YES. [2024-06-03 20:47:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 320 events. 143/320 cut-off events. For 4487/4487 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1444 event pairs, 35 based on Foata normal form. 8/327 useless extension candidates. Maximal degree in co-relation 1375. Up to 178 conditions per place. [2024-06-03 20:47:15,361 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 28 changer transitions 9/78 dead transitions. [2024-06-03 20:47:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 78 transitions, 706 flow [2024-06-03 20:47:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-03 20:47:15,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-03 20:47:15,362 INFO L175 Difference]: Start difference. First operand has 90 places, 62 transitions, 512 flow. Second operand 8 states and 129 transitions. [2024-06-03 20:47:15,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 78 transitions, 706 flow [2024-06-03 20:47:15,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 78 transitions, 642 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 20:47:15,369 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 489 flow [2024-06-03 20:47:15,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2024-06-03 20:47:15,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-03 20:47:15,370 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 489 flow [2024-06-03 20:47:15,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:15,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:15,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:15,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:47:15,370 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:15,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -966262639, now seen corresponding path program 3 times [2024-06-03 20:47:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444934430] [2024-06-03 20:47:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:15,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444934430] [2024-06-03 20:47:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444934430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:15,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:15,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352586264] [2024-06-03 20:47:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:15,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:15,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:15,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:15,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:15,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:15,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:15,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:15,738 INFO L124 PetriNetUnfolderBase]: 134/303 cut-off events. [2024-06-03 20:47:15,739 INFO L125 PetriNetUnfolderBase]: For 3364/3364 co-relation queries the response was YES. [2024-06-03 20:47:15,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 303 events. 134/303 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1319 event pairs, 29 based on Foata normal form. 6/308 useless extension candidates. Maximal degree in co-relation 1284. Up to 168 conditions per place. [2024-06-03 20:47:15,740 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 25 changer transitions 14/75 dead transitions. [2024-06-03 20:47:15,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 75 transitions, 671 flow [2024-06-03 20:47:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-03 20:47:15,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-03 20:47:15,741 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 489 flow. Second operand 8 states and 127 transitions. [2024-06-03 20:47:15,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 75 transitions, 671 flow [2024-06-03 20:47:15,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 611 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 20:47:15,748 INFO L231 Difference]: Finished difference. Result has 85 places, 55 transitions, 443 flow [2024-06-03 20:47:15,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=443, PETRI_PLACES=85, PETRI_TRANSITIONS=55} [2024-06-03 20:47:15,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-03 20:47:15,751 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 55 transitions, 443 flow [2024-06-03 20:47:15,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:15,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:15,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:15,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:47:15,752 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:15,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1687055795, now seen corresponding path program 4 times [2024-06-03 20:47:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:15,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097288913] [2024-06-03 20:47:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:15,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097288913] [2024-06-03 20:47:15,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097288913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:15,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:15,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454679558] [2024-06-03 20:47:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:16,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:16,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 55 transitions, 443 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:16,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:16,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:16,110 INFO L124 PetriNetUnfolderBase]: 127/280 cut-off events. [2024-06-03 20:47:16,111 INFO L125 PetriNetUnfolderBase]: For 3303/3307 co-relation queries the response was YES. [2024-06-03 20:47:16,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 280 events. 127/280 cut-off events. For 3303/3307 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1208 event pairs, 33 based on Foata normal form. 12/291 useless extension candidates. Maximal degree in co-relation 1173. Up to 176 conditions per place. [2024-06-03 20:47:16,112 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 17 changer transitions 9/68 dead transitions. [2024-06-03 20:47:16,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 607 flow [2024-06-03 20:47:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-03 20:47:16,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-03 20:47:16,114 INFO L175 Difference]: Start difference. First operand has 85 places, 55 transitions, 443 flow. Second operand 8 states and 126 transitions. [2024-06-03 20:47:16,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 607 flow [2024-06-03 20:47:16,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 547 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 20:47:16,119 INFO L231 Difference]: Finished difference. Result has 80 places, 52 transitions, 394 flow [2024-06-03 20:47:16,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=394, PETRI_PLACES=80, PETRI_TRANSITIONS=52} [2024-06-03 20:47:16,121 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-03 20:47:16,121 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 52 transitions, 394 flow [2024-06-03 20:47:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:16,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:16,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:47:16,122 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:16,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1681687463, now seen corresponding path program 1 times [2024-06-03 20:47:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656098870] [2024-06-03 20:47:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656098870] [2024-06-03 20:47:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656098870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:16,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386628882] [2024-06-03 20:47:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:16,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:16,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 52 transitions, 394 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:16,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:16,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:16,513 INFO L124 PetriNetUnfolderBase]: 122/275 cut-off events. [2024-06-03 20:47:16,515 INFO L125 PetriNetUnfolderBase]: For 2571/2571 co-relation queries the response was YES. [2024-06-03 20:47:16,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 275 events. 122/275 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1194 event pairs, 35 based on Foata normal form. 8/282 useless extension candidates. Maximal degree in co-relation 1089. Up to 172 conditions per place. [2024-06-03 20:47:16,517 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 15 changer transitions 9/66 dead transitions. [2024-06-03 20:47:16,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 66 transitions, 556 flow [2024-06-03 20:47:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:47:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:47:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-03 20:47:16,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-03 20:47:16,518 INFO L175 Difference]: Start difference. First operand has 80 places, 52 transitions, 394 flow. Second operand 9 states and 136 transitions. [2024-06-03 20:47:16,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 66 transitions, 556 flow [2024-06-03 20:47:16,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 516 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 20:47:16,523 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 363 flow [2024-06-03 20:47:16,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=363, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2024-06-03 20:47:16,524 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-03 20:47:16,524 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 363 flow [2024-06-03 20:47:16,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:16,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:16,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:47:16,525 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1700468921, now seen corresponding path program 2 times [2024-06-03 20:47:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018283277] [2024-06-03 20:47:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018283277] [2024-06-03 20:47:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018283277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:16,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810597641] [2024-06-03 20:47:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:16,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:16,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:16,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:16,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:16,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:16,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:16,954 INFO L124 PetriNetUnfolderBase]: 113/262 cut-off events. [2024-06-03 20:47:16,954 INFO L125 PetriNetUnfolderBase]: For 2323/2323 co-relation queries the response was YES. [2024-06-03 20:47:16,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 262 events. 113/262 cut-off events. For 2323/2323 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1104 event pairs, 31 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 1023. Up to 162 conditions per place. [2024-06-03 20:47:16,956 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 13 changer transitions 10/63 dead transitions. [2024-06-03 20:47:16,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 63 transitions, 515 flow [2024-06-03 20:47:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:47:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:47:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-03 20:47:16,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-03 20:47:16,957 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 363 flow. Second operand 9 states and 134 transitions. [2024-06-03 20:47:16,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 63 transitions, 515 flow [2024-06-03 20:47:16,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 63 transitions, 470 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 20:47:16,962 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 322 flow [2024-06-03 20:47:16,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2024-06-03 20:47:16,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-03 20:47:16,963 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 322 flow [2024-06-03 20:47:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:16,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:16,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:16,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:47:16,963 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:16,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1694743469, now seen corresponding path program 5 times [2024-06-03 20:47:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975479465] [2024-06-03 20:47:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:16,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975479465] [2024-06-03 20:47:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975479465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:17,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:17,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:17,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847140256] [2024-06-03 20:47:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:17,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:17,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:17,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:17,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:17,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:17,325 INFO L124 PetriNetUnfolderBase]: 106/243 cut-off events. [2024-06-03 20:47:17,325 INFO L125 PetriNetUnfolderBase]: For 2297/2297 co-relation queries the response was YES. [2024-06-03 20:47:17,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 243 events. 106/243 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 988 event pairs, 29 based on Foata normal form. 6/248 useless extension candidates. Maximal degree in co-relation 941. Up to 152 conditions per place. [2024-06-03 20:47:17,327 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2024-06-03 20:47:17,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 59 transitions, 464 flow [2024-06-03 20:47:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-03 20:47:17,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-03 20:47:17,328 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 322 flow. Second operand 8 states and 121 transitions. [2024-06-03 20:47:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 59 transitions, 464 flow [2024-06-03 20:47:17,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 425 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:47:17,332 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 258 flow [2024-06-03 20:47:17,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2024-06-03 20:47:17,332 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-03 20:47:17,333 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 258 flow [2024-06-03 20:47:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:17,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:17,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 20:47:17,333 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:17,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1672461945, now seen corresponding path program 3 times [2024-06-03 20:47:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856792360] [2024-06-03 20:47:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:17,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:17,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856792360] [2024-06-03 20:47:17,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856792360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:17,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:17,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:17,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819557980] [2024-06-03 20:47:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:17,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:17,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:17,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:17,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:17,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:17,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:17,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:17,679 INFO L124 PetriNetUnfolderBase]: 98/222 cut-off events. [2024-06-03 20:47:17,680 INFO L125 PetriNetUnfolderBase]: For 2343/2351 co-relation queries the response was YES. [2024-06-03 20:47:17,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 222 events. 98/222 cut-off events. For 2343/2351 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 916 event pairs, 35 based on Foata normal form. 16/238 useless extension candidates. Maximal degree in co-relation 828. Up to 136 conditions per place. [2024-06-03 20:47:17,681 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 23 selfloop transitions, 14 changer transitions 9/50 dead transitions. [2024-06-03 20:47:17,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 50 transitions, 376 flow [2024-06-03 20:47:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-03 20:47:17,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-03 20:47:17,682 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 258 flow. Second operand 7 states and 108 transitions. [2024-06-03 20:47:17,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 50 transitions, 376 flow [2024-06-03 20:47:17,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 345 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:47:17,685 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 237 flow [2024-06-03 20:47:17,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-06-03 20:47:17,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 20:47:17,686 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 237 flow [2024-06-03 20:47:17,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:17,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:17,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 20:47:17,687 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:17,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1401024925, now seen corresponding path program 4 times [2024-06-03 20:47:17,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319046748] [2024-06-03 20:47:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:17,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:17,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319046748] [2024-06-03 20:47:17,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319046748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:17,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:17,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:17,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242999931] [2024-06-03 20:47:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:17,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:17,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:17,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:17,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 237 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:17,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:17,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:18,044 INFO L124 PetriNetUnfolderBase]: 93/215 cut-off events. [2024-06-03 20:47:18,044 INFO L125 PetriNetUnfolderBase]: For 2029/2029 co-relation queries the response was YES. [2024-06-03 20:47:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 215 events. 93/215 cut-off events. For 2029/2029 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 878 event pairs, 35 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 782. Up to 132 conditions per place. [2024-06-03 20:47:18,045 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 23 selfloop transitions, 12 changer transitions 9/48 dead transitions. [2024-06-03 20:47:18,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 353 flow [2024-06-03 20:47:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-03 20:47:18,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-03 20:47:18,046 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 237 flow. Second operand 8 states and 120 transitions. [2024-06-03 20:47:18,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 353 flow [2024-06-03 20:47:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 321 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 20:47:18,049 INFO L231 Difference]: Finished difference. Result has 63 places, 35 transitions, 214 flow [2024-06-03 20:47:18,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=214, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2024-06-03 20:47:18,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-03 20:47:18,050 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 214 flow [2024-06-03 20:47:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:18,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:18,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 20:47:18,050 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:18,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1666890315, now seen corresponding path program 5 times [2024-06-03 20:47:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266040554] [2024-06-03 20:47:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266040554] [2024-06-03 20:47:18,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266040554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:18,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:18,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:18,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781116143] [2024-06-03 20:47:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:18,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:18,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:18,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:18,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 214 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:18,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:18,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:18,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:18,378 INFO L124 PetriNetUnfolderBase]: 84/198 cut-off events. [2024-06-03 20:47:18,378 INFO L125 PetriNetUnfolderBase]: For 1583/1583 co-relation queries the response was YES. [2024-06-03 20:47:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 198 events. 84/198 cut-off events. For 1583/1583 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 760 event pairs, 29 based on Foata normal form. 6/204 useless extension candidates. Maximal degree in co-relation 708. Up to 122 conditions per place. [2024-06-03 20:47:18,379 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 10 changer transitions 10/45 dead transitions. [2024-06-03 20:47:18,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 45 transitions, 320 flow [2024-06-03 20:47:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:47:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:47:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-03 20:47:18,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-03 20:47:18,381 INFO L175 Difference]: Start difference. First operand has 63 places, 35 transitions, 214 flow. Second operand 8 states and 118 transitions. [2024-06-03 20:47:18,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 45 transitions, 320 flow [2024-06-03 20:47:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 292 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 20:47:18,383 INFO L231 Difference]: Finished difference. Result has 61 places, 32 transitions, 189 flow [2024-06-03 20:47:18,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=61, PETRI_TRANSITIONS=32} [2024-06-03 20:47:18,383 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-03 20:47:18,383 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 32 transitions, 189 flow [2024-06-03 20:47:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:18,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:18,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:18,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 20:47:18,384 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:18,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -304801827, now seen corresponding path program 6 times [2024-06-03 20:47:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369057677] [2024-06-03 20:47:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:18,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369057677] [2024-06-03 20:47:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369057677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:18,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:18,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:18,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399885119] [2024-06-03 20:47:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:18,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:18,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:18,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 32 transitions, 189 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:18,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:18,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:18,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:18,765 INFO L124 PetriNetUnfolderBase]: 74/178 cut-off events. [2024-06-03 20:47:18,765 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2024-06-03 20:47:18,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 178 events. 74/178 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 659 event pairs, 25 based on Foata normal form. 8/186 useless extension candidates. Maximal degree in co-relation 608. Up to 99 conditions per place. [2024-06-03 20:47:18,766 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 8 changer transitions 6/40 dead transitions. [2024-06-03 20:47:18,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 40 transitions, 285 flow [2024-06-03 20:47:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-03 20:47:18,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-03 20:47:18,767 INFO L175 Difference]: Start difference. First operand has 61 places, 32 transitions, 189 flow. Second operand 6 states and 93 transitions. [2024-06-03 20:47:18,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 40 transitions, 285 flow [2024-06-03 20:47:18,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 40 transitions, 259 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 20:47:18,770 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 162 flow [2024-06-03 20:47:18,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2024-06-03 20:47:18,770 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-03 20:47:18,770 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 162 flow [2024-06-03 20:47:18,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:18,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:18,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:18,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 20:47:18,771 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -304592577, now seen corresponding path program 7 times [2024-06-03 20:47:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673217108] [2024-06-03 20:47:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:18,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673217108] [2024-06-03 20:47:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673217108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:19,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118559167] [2024-06-03 20:47:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:19,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:19,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:19,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:19,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:19,109 INFO L124 PetriNetUnfolderBase]: 65/165 cut-off events. [2024-06-03 20:47:19,109 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2024-06-03 20:47:19,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 165 events. 65/165 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 599 event pairs, 21 based on Foata normal form. 6/171 useless extension candidates. Maximal degree in co-relation 530. Up to 89 conditions per place. [2024-06-03 20:47:19,110 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 5 changer transitions 8/38 dead transitions. [2024-06-03 20:47:19,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 38 transitions, 252 flow [2024-06-03 20:47:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-03 20:47:19,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-03 20:47:19,111 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 162 flow. Second operand 6 states and 94 transitions. [2024-06-03 20:47:19,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 38 transitions, 252 flow [2024-06-03 20:47:19,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 225 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:47:19,112 INFO L231 Difference]: Finished difference. Result has 52 places, 26 transitions, 130 flow [2024-06-03 20:47:19,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=26} [2024-06-03 20:47:19,113 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-03 20:47:19,113 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 26 transitions, 130 flow [2024-06-03 20:47:19,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:19,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:19,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 20:47:19,114 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:19,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1672615767, now seen corresponding path program 6 times [2024-06-03 20:47:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106355163] [2024-06-03 20:47:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106355163] [2024-06-03 20:47:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106355163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:19,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681069244] [2024-06-03 20:47:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:19,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:19,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 26 transitions, 130 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:19,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:19,448 INFO L124 PetriNetUnfolderBase]: 43/115 cut-off events. [2024-06-03 20:47:19,449 INFO L125 PetriNetUnfolderBase]: For 558/558 co-relation queries the response was YES. [2024-06-03 20:47:19,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 115 events. 43/115 cut-off events. For 558/558 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 329 event pairs, 17 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 336. Up to 52 conditions per place. [2024-06-03 20:47:19,449 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 2 changer transitions 12/34 dead transitions. [2024-06-03 20:47:19,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 206 flow [2024-06-03 20:47:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:47:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:47:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-03 20:47:19,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-03 20:47:19,451 INFO L175 Difference]: Start difference. First operand has 52 places, 26 transitions, 130 flow. Second operand 7 states and 101 transitions. [2024-06-03 20:47:19,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 206 flow [2024-06-03 20:47:19,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 187 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:47:19,452 INFO L231 Difference]: Finished difference. Result has 49 places, 21 transitions, 86 flow [2024-06-03 20:47:19,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=21} [2024-06-03 20:47:19,452 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-03 20:47:19,453 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 21 transitions, 86 flow [2024-06-03 20:47:19,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:47:19,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:47:19,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 20:47:19,453 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:47:19,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:47:19,454 INFO L85 PathProgramCache]: Analyzing trace with hash -38895297, now seen corresponding path program 8 times [2024-06-03 20:47:19,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:47:19,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072667858] [2024-06-03 20:47:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:47:19,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:47:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:47:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:47:19,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:47:19,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072667858] [2024-06-03 20:47:19,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072667858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:47:19,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:47:19,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:47:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670991965] [2024-06-03 20:47:19,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:47:19,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:47:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:47:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:47:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:47:19,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 20:47:19,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 21 transitions, 86 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:47:19,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 20:47:19,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:47:19,778 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-03 20:47:19,778 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-06-03 20:47:19,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 60 events. 20/60 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 2 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 145. Up to 24 conditions per place. [2024-06-03 20:47:19,779 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-03 20:47:19,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 120 flow [2024-06-03 20:47:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:47:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:47:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-03 20:47:19,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-03 20:47:19,780 INFO L175 Difference]: Start difference. First operand has 49 places, 21 transitions, 86 flow. Second operand 6 states and 82 transitions. [2024-06-03 20:47:19,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 120 flow [2024-06-03 20:47:19,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 98 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:47:19,781 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-03 20:47:19,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-03 20:47:19,782 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-03 20:47:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-03 20:47:19,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-03 20:47:19,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:47:19,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:47:19,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:47:19,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:47:19,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 20:47:19,785 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-06-03 20:47:19,787 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:47:19,787 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:47:19,790 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:47:19,791 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:47:19,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:47:19 BasicIcfg [2024-06-03 20:47:19,792 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:47:19,793 INFO L158 Benchmark]: Toolchain (without parser) took 17000.78ms. Allocated memory was 192.9MB in the beginning and 620.8MB in the end (delta: 427.8MB). Free memory was 121.3MB in the beginning and 540.9MB in the end (delta: -419.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-06-03 20:47:19,793 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 104.9MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:47:19,793 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 68.2MB in the end (delta: 24.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:47:19,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.71ms. Allocated memory is still 192.9MB. Free memory was 120.8MB in the beginning and 141.6MB in the end (delta: -20.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-03 20:47:19,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.97ms. Allocated memory is still 192.9MB. Free memory was 141.6MB in the beginning and 138.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:47:19,794 INFO L158 Benchmark]: Boogie Preprocessor took 56.59ms. Allocated memory is still 192.9MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:47:19,794 INFO L158 Benchmark]: RCFGBuilder took 493.67ms. Allocated memory is still 192.9MB. Free memory was 136.2MB in the beginning and 102.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 20:47:19,794 INFO L158 Benchmark]: TraceAbstraction took 15803.81ms. Allocated memory was 192.9MB in the beginning and 620.8MB in the end (delta: 427.8MB). Free memory was 101.8MB in the beginning and 540.9MB in the end (delta: -439.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:47:19,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.09ms. Allocated memory is still 104.9MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 68.2MB in the end (delta: 24.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.71ms. Allocated memory is still 192.9MB. Free memory was 120.8MB in the beginning and 141.6MB in the end (delta: -20.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.97ms. Allocated memory is still 192.9MB. Free memory was 141.6MB in the beginning and 138.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.59ms. Allocated memory is still 192.9MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.67ms. Allocated memory is still 192.9MB. Free memory was 136.2MB in the beginning and 102.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15803.81ms. Allocated memory was 192.9MB in the beginning and 620.8MB in the end (delta: 427.8MB). Free memory was 101.8MB in the beginning and 540.9MB in the end (delta: -439.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.7s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1893 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1440 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6126 IncrementalHoareTripleChecker+Invalid, 6327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 151 mSDtfsCounter, 6126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=532occurred in iteration=25, InterpolantAutomatonStates: 253, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 5325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:47:19,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE