./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi010.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/rfi010.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.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-7724a2d-m [2024-06-28 00:03:50,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:03:50,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:03:50,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:03:50,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:03:50,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:03:50,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:03:50,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:03:50,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:03:50,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:03:50,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:03:50,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:03:50,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:03:50,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:03:50,496 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:03:50,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:03:50,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:03:50,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:03:50,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:03:50,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:03:50,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:03:50,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:03:50,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:03:50,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:03:50,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:03:50,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:03:50,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:03:50,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:03:50,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:03:50,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:03:50,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:03:50,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:03:50,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:03:50,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:03:50,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:03:50,503 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:03:50,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:03:50,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:03:50,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:03:50,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:03:50,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:03:50,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:03:50,815 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:03:50,816 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:03:50,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi010.yml/witness.yml [2024-06-28 00:03:50,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:03:50,894 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:03:50,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-28 00:03:52,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:03:52,541 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:03:52,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi010.i [2024-06-28 00:03:52,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aced5a55/e41536dedc38449c8cdbb0431dbaa82d/FLAG540a41131 [2024-06-28 00:03:52,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aced5a55/e41536dedc38449c8cdbb0431dbaa82d [2024-06-28 00:03:52,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:03:52,578 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:03:52,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:03:52,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:03:52,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:03:52,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:50" (1/2) ... [2024-06-28 00:03:52,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5380baaf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:03:52, skipping insertion in model container [2024-06-28 00:03:52,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:50" (1/2) ... [2024-06-28 00:03:52,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49fee09a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:03:52, skipping insertion in model container [2024-06-28 00:03:52,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:03:52" (2/2) ... [2024-06-28 00:03:52,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5380baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:52, skipping insertion in model container [2024-06-28 00:03:52,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:03:52" (2/2) ... [2024-06-28 00:03:52,587 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:03:52,603 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:03:52,604 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:03:52,604 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:03:52,605 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:03:52,605 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-28 00:03:52,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:03:52,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:03:52,899 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:03:53,021 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:03:53,070 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:03:53,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53 WrapperNode [2024-06-28 00:03:53,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:03:53,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:03:53,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:03:53,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:03:53,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,164 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-28 00:03:53,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:03:53,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:03:53,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:03:53,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:03:53,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,210 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]. [2024-06-28 00:03:53,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:03:53,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:03:53,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:03:53,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:03:53,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (1/1) ... [2024-06-28 00:03:53,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:03:53,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:03:53,370 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) [2024-06-28 00:03:53,450 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 [2024-06-28 00:03:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:03:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:03:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:03:53,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:03:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:03:53,513 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:03:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:03:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:03:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:03:53,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:03:53,515 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:03:53,638 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:03:53,640 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:03:54,123 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:03:54,123 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:03:54,350 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:03:54,350 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:03:54,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:03:54 BoogieIcfgContainer [2024-06-28 00:03:54,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:03:54,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:03:54,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:03:54,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:03:54,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:50" (1/4) ... [2024-06-28 00:03:54,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4495cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:03:54, skipping insertion in model container [2024-06-28 00:03:54,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:03:52" (2/4) ... [2024-06-28 00:03:54,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4495cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:03:54, skipping insertion in model container [2024-06-28 00:03:54,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:53" (3/4) ... [2024-06-28 00:03:54,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4495cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:03:54, skipping insertion in model container [2024-06-28 00:03:54,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:03:54" (4/4) ... [2024-06-28 00:03:54,359 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi010.i [2024-06-28 00:03:54,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:03:54,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:03:54,373 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:03:54,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:03:54,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:03:54,461 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 00:03:54,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:03:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:03:54,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:03:54,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 00:03:54,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:03:54,478 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;@3506b44a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:03:54,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:03:54,497 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:03:54,497 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:03:54,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:03:54,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:54,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:03:54,499 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)] === [2024-06-28 00:03:54,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 358540720, now seen corresponding path program 1 times [2024-06-28 00:03:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693876747] [2024-06-28 00:03:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:54,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693876747] [2024-06-28 00:03:55,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693876747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:55,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:55,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:03:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111258244] [2024-06-28 00:03:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:55,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:03:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:03:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:03:55,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-28 00:03:55,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-28 00:03:55,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:55,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-28 00:03:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:55,940 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-28 00:03:55,941 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 00:03:55,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1020 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-28 00:03:55,946 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:03:55,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-28 00:03:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:03:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:03:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-28 00:03:55,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-28 00:03:55,972 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-28 00:03:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-28 00:03:55,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:55,977 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 00:03:55,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 00:03:55,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 00:03:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 00:03:55,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-28 00:03:55,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:03:55,984 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)] === [2024-06-28 00:03:55,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash 960277711, now seen corresponding path program 1 times [2024-06-28 00:03:55,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631084006] [2024-06-28 00:03:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631084006] [2024-06-28 00:03:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631084006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:03:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302076551] [2024-06-28 00:03:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:56,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:03:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:56,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:03:56,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:03:56,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:03:56,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-28 00:03:56,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:56,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:03:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,049 INFO L124 PetriNetUnfolderBase]: 150/285 cut-off events. [2024-06-28 00:03:57,049 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-28 00:03:57,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 285 events. 150/285 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1101 event pairs, 68 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 641. Up to 258 conditions per place. [2024-06-28 00:03:57,054 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 00:03:57,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-28 00:03:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:03:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:03:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-28 00:03:57,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 00:03:57,057 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-28 00:03:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-28 00:03:57,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:03:57,060 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 00:03:57,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 00:03:57,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 00:03:57,061 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 00:03:57,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-06-28 00:03:57,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:03:57,062 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)] === [2024-06-28 00:03:57,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash -591056914, now seen corresponding path program 1 times [2024-06-28 00:03:57,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715577921] [2024-06-28 00:03:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:58,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715577921] [2024-06-28 00:03:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715577921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019334088] [2024-06-28 00:03:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:58,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:03:58,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-06-28 00:03:58,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:58,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:03:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:58,582 INFO L124 PetriNetUnfolderBase]: 147/280 cut-off events. [2024-06-28 00:03:58,582 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-06-28 00:03:58,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 280 events. 147/280 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1074 event pairs, 47 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 702. Up to 244 conditions per place. [2024-06-28 00:03:58,584 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-28 00:03:58,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 205 flow [2024-06-28 00:03:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 00:03:58,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567741935483871 [2024-06-28 00:03:58,586 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 88 transitions. [2024-06-28 00:03:58,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 205 flow [2024-06-28 00:03:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:58,588 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 00:03:58,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 00:03:58,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 00:03:58,589 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 00:03:58,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-06-28 00:03:58,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:58,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:03:58,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1645151967, now seen corresponding path program 1 times [2024-06-28 00:03:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124899893] [2024-06-28 00:03:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:59,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:59,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124899893] [2024-06-28 00:03:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124899893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:59,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:59,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623015586] [2024-06-28 00:03:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:59,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:59,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:59,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:03:59,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-06-28 00:03:59,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:59,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:03:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,712 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-28 00:03:59,713 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-28 00:03:59,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 252 events. 123/252 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 963 event pairs, 38 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 681. Up to 219 conditions per place. [2024-06-28 00:03:59,715 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2024-06-28 00:03:59,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-28 00:03:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:03:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:03:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 00:03:59,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-28 00:03:59,717 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 83 transitions. [2024-06-28 00:03:59,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-28 00:03:59,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 192 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:59,719 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 148 flow [2024-06-28 00:03:59,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-28 00:03:59,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-28 00:03:59,720 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 148 flow [2024-06-28 00:03:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-06-28 00:03:59,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:03:59,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:59,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1069977843, now seen corresponding path program 1 times [2024-06-28 00:03:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534472412] [2024-06-28 00:03:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:01,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534472412] [2024-06-28 00:04:01,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534472412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:01,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435499901] [2024-06-28 00:04:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:01,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:01,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:04:01,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-28 00:04:01,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:01,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:04:01,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:01,289 INFO L124 PetriNetUnfolderBase]: 141/269 cut-off events. [2024-06-28 00:04:01,289 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-06-28 00:04:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 269 events. 141/269 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 999 event pairs, 24 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 792. Up to 215 conditions per place. [2024-06-28 00:04:01,291 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2024-06-28 00:04:01,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 256 flow [2024-06-28 00:04:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 00:04:01,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-28 00:04:01,293 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 148 flow. Second operand 6 states and 99 transitions. [2024-06-28 00:04:01,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 256 flow [2024-06-28 00:04:01,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 243 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:01,295 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 149 flow [2024-06-28 00:04:01,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-28 00:04:01,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-28 00:04:01,296 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 149 flow [2024-06-28 00:04:01,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-28 00:04:01,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:01,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:01,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:04:01,297 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)] === [2024-06-28 00:04:01,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 539897294, now seen corresponding path program 1 times [2024-06-28 00:04:01,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:01,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924817889] [2024-06-28 00:04:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:01,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924817889] [2024-06-28 00:04:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924817889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090986332] [2024-06-28 00:04:02,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:02,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:02,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:02,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:02,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:02,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:02,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:02,731 INFO L124 PetriNetUnfolderBase]: 139/266 cut-off events. [2024-06-28 00:04:02,731 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-06-28 00:04:02,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 266 events. 139/266 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 998 event pairs, 41 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 826. Up to 242 conditions per place. [2024-06-28 00:04:02,733 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 10 changer transitions 0/39 dead transitions. [2024-06-28 00:04:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 239 flow [2024-06-28 00:04:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-28 00:04:02,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:04:02,734 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 149 flow. Second operand 6 states and 80 transitions. [2024-06-28 00:04:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 239 flow [2024-06-28 00:04:02,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 217 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:02,737 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 164 flow [2024-06-28 00:04:02,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-28 00:04:02,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 00:04:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 164 flow [2024-06-28 00:04:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:02,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:02,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:04:02,738 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)] === [2024-06-28 00:04:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1470527810, now seen corresponding path program 1 times [2024-06-28 00:04:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211712575] [2024-06-28 00:04:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211712575] [2024-06-28 00:04:03,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211712575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806178048] [2024-06-28 00:04:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:03,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:03,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:03,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:03,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:03,677 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2024-06-28 00:04:03,677 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2024-06-28 00:04:03,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 284 events. 146/284 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1110 event pairs, 61 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 910. Up to 246 conditions per place. [2024-06-28 00:04:03,679 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-28 00:04:03,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 292 flow [2024-06-28 00:04:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-28 00:04:03,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-28 00:04:03,681 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 164 flow. Second operand 6 states and 83 transitions. [2024-06-28 00:04:03,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 292 flow [2024-06-28 00:04:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 271 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:03,683 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 212 flow [2024-06-28 00:04:03,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-28 00:04:03,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-28 00:04:03,684 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 212 flow [2024-06-28 00:04:03,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:03,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:03,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:03,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:04:03,685 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)] === [2024-06-28 00:04:03,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash -892838078, now seen corresponding path program 2 times [2024-06-28 00:04:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:03,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462969493] [2024-06-28 00:04:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:04,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462969493] [2024-06-28 00:04:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462969493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:04,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256079504] [2024-06-28 00:04:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:04,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:04,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:04,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:04,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:04,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:04,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:04,754 INFO L124 PetriNetUnfolderBase]: 154/292 cut-off events. [2024-06-28 00:04:04,754 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-06-28 00:04:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 292 events. 154/292 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1143 event pairs, 41 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1029. Up to 233 conditions per place. [2024-06-28 00:04:04,756 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 29 selfloop transitions, 20 changer transitions 0/53 dead transitions. [2024-06-28 00:04:04,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 378 flow [2024-06-28 00:04:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-28 00:04:04,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-28 00:04:04,757 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 212 flow. Second operand 6 states and 87 transitions. [2024-06-28 00:04:04,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 378 flow [2024-06-28 00:04:04,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 362 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 00:04:04,759 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 305 flow [2024-06-28 00:04:04,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 00:04:04,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-28 00:04:04,760 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 305 flow [2024-06-28 00:04:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:04,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:04,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:04:04,761 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)] === [2024-06-28 00:04:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1904539712, now seen corresponding path program 3 times [2024-06-28 00:04:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365603775] [2024-06-28 00:04:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365603775] [2024-06-28 00:04:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365603775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517150878] [2024-06-28 00:04:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:05,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:05,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:05,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:05,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,667 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-28 00:04:05,667 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2024-06-28 00:04:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 309 events. 159/309 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1226 event pairs, 62 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1187. Up to 251 conditions per place. [2024-06-28 00:04:05,670 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-28 00:04:05,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 472 flow [2024-06-28 00:04:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 00:04:05,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-28 00:04:05,671 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 305 flow. Second operand 7 states and 97 transitions. [2024-06-28 00:04:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 472 flow [2024-06-28 00:04:05,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 462 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 00:04:05,674 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 371 flow [2024-06-28 00:04:05,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-28 00:04:05,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 00:04:05,675 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 371 flow [2024-06-28 00:04:05,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-06-28 00:04:05,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:05,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:04:05,676 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)] === [2024-06-28 00:04:05,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -443052320, now seen corresponding path program 1 times [2024-06-28 00:04:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658532410] [2024-06-28 00:04:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:07,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658532410] [2024-06-28 00:04:07,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658532410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:07,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744983702] [2024-06-28 00:04:07,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:07,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:07,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:07,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:07,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:07,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:07,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,482 INFO L124 PetriNetUnfolderBase]: 157/306 cut-off events. [2024-06-28 00:04:07,482 INFO L125 PetriNetUnfolderBase]: For 1700/1700 co-relation queries the response was YES. [2024-06-28 00:04:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 306 events. 157/306 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1224 event pairs, 63 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1234. Up to 270 conditions per place. [2024-06-28 00:04:07,484 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-06-28 00:04:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 505 flow [2024-06-28 00:04:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 00:04:07,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:07,486 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 371 flow. Second operand 7 states and 91 transitions. [2024-06-28 00:04:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 505 flow [2024-06-28 00:04:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 474 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:07,489 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 383 flow [2024-06-28 00:04:07,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-28 00:04:07,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 00:04:07,490 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 383 flow [2024-06-28 00:04:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:07,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:04:07,491 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)] === [2024-06-28 00:04:07,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1913740113, now seen corresponding path program 1 times [2024-06-28 00:04:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498581242] [2024-06-28 00:04:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498581242] [2024-06-28 00:04:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498581242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:09,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:09,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377549750] [2024-06-28 00:04:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:09,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:09,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:09,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:09,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:09,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:09,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:09,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:09,284 INFO L124 PetriNetUnfolderBase]: 164/317 cut-off events. [2024-06-28 00:04:09,284 INFO L125 PetriNetUnfolderBase]: For 1931/1931 co-relation queries the response was YES. [2024-06-28 00:04:09,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 317 events. 164/317 cut-off events. For 1931/1931 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1281 event pairs, 49 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1306. Up to 252 conditions per place. [2024-06-28 00:04:09,286 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-28 00:04:09,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 561 flow [2024-06-28 00:04:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-28 00:04:09,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2024-06-28 00:04:09,288 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 383 flow. Second operand 7 states and 100 transitions. [2024-06-28 00:04:09,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 561 flow [2024-06-28 00:04:09,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 534 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:09,292 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 429 flow [2024-06-28 00:04:09,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-28 00:04:09,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 00:04:09,292 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 429 flow [2024-06-28 00:04:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:09,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:04:09,293 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)] === [2024-06-28 00:04:09,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1707086673, now seen corresponding path program 2 times [2024-06-28 00:04:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416920562] [2024-06-28 00:04:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416920562] [2024-06-28 00:04:10,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416920562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815504458] [2024-06-28 00:04:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:10,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:10,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,045 INFO L124 PetriNetUnfolderBase]: 167/320 cut-off events. [2024-06-28 00:04:11,045 INFO L125 PetriNetUnfolderBase]: For 2307/2307 co-relation queries the response was YES. [2024-06-28 00:04:11,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 320 events. 167/320 cut-off events. For 2307/2307 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1303 event pairs, 60 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1428. Up to 249 conditions per place. [2024-06-28 00:04:11,048 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 26 changer transitions 0/65 dead transitions. [2024-06-28 00:04:11,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 605 flow [2024-06-28 00:04:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 00:04:11,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:04:11,051 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 429 flow. Second operand 7 states and 98 transitions. [2024-06-28 00:04:11,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 605 flow [2024-06-28 00:04:11,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 542 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:11,056 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 443 flow [2024-06-28 00:04:11,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-28 00:04:11,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 00:04:11,059 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 443 flow [2024-06-28 00:04:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:11,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:04:11,060 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)] === [2024-06-28 00:04:11,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -849729171, now seen corresponding path program 3 times [2024-06-28 00:04:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119996616] [2024-06-28 00:04:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:12,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119996616] [2024-06-28 00:04:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119996616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112339544] [2024-06-28 00:04:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:12,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:12,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:12,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:12,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:12,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,151 INFO L124 PetriNetUnfolderBase]: 175/335 cut-off events. [2024-06-28 00:04:13,151 INFO L125 PetriNetUnfolderBase]: For 2761/2761 co-relation queries the response was YES. [2024-06-28 00:04:13,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 335 events. 175/335 cut-off events. For 2761/2761 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1361 event pairs, 44 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1549. Up to 241 conditions per place. [2024-06-28 00:04:13,153 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 35 changer transitions 0/71 dead transitions. [2024-06-28 00:04:13,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 691 flow [2024-06-28 00:04:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 00:04:13,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46543778801843316 [2024-06-28 00:04:13,155 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 443 flow. Second operand 7 states and 101 transitions. [2024-06-28 00:04:13,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 691 flow [2024-06-28 00:04:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 630 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:13,159 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 526 flow [2024-06-28 00:04:13,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-28 00:04:13,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 00:04:13,159 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 526 flow [2024-06-28 00:04:13,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:13,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:13,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:04:13,160 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)] === [2024-06-28 00:04:13,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1103110033, now seen corresponding path program 4 times [2024-06-28 00:04:13,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:13,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970551494] [2024-06-28 00:04:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970551494] [2024-06-28 00:04:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970551494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095446903] [2024-06-28 00:04:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:14,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:14,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:14,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:14,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:14,603 INFO L124 PetriNetUnfolderBase]: 171/330 cut-off events. [2024-06-28 00:04:14,603 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2024-06-28 00:04:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 330 events. 171/330 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 54 based on Foata normal form. 2/331 useless extension candidates. Maximal degree in co-relation 1609. Up to 266 conditions per place. [2024-06-28 00:04:14,606 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-28 00:04:14,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 690 flow [2024-06-28 00:04:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:04:14,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-28 00:04:14,607 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 526 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:04:14,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 690 flow [2024-06-28 00:04:14,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 632 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:14,612 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 514 flow [2024-06-28 00:04:14,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-28 00:04:14,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 00:04:14,613 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 514 flow [2024-06-28 00:04:14,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:14,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:14,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:14,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:04:14,613 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)] === [2024-06-28 00:04:14,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash -849719251, now seen corresponding path program 1 times [2024-06-28 00:04:14,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:14,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250112576] [2024-06-28 00:04:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:14,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250112576] [2024-06-28 00:04:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250112576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66272466] [2024-06-28 00:04:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:17,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:17,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:17,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:17,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:17,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:17,351 INFO L124 PetriNetUnfolderBase]: 169/329 cut-off events. [2024-06-28 00:04:17,352 INFO L125 PetriNetUnfolderBase]: For 3307/3307 co-relation queries the response was YES. [2024-06-28 00:04:17,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 329 events. 169/329 cut-off events. For 3307/3307 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1359 event pairs, 50 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1623. Up to 288 conditions per place. [2024-06-28 00:04:17,354 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-28 00:04:17,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 678 flow [2024-06-28 00:04:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:04:17,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:04:17,356 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 514 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:04:17,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 678 flow [2024-06-28 00:04:17,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 615 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:17,361 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 500 flow [2024-06-28 00:04:17,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-28 00:04:17,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-28 00:04:17,363 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 500 flow [2024-06-28 00:04:17,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:17,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:17,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:17,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:04:17,364 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)] === [2024-06-28 00:04:17,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:17,364 INFO L85 PathProgramCache]: Analyzing trace with hash 133001121, now seen corresponding path program 1 times [2024-06-28 00:04:17,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:17,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678262517] [2024-06-28 00:04:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:18,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678262517] [2024-06-28 00:04:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678262517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:18,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690525779] [2024-06-28 00:04:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:18,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:19,109 INFO L124 PetriNetUnfolderBase]: 172/335 cut-off events. [2024-06-28 00:04:19,109 INFO L125 PetriNetUnfolderBase]: For 3522/3522 co-relation queries the response was YES. [2024-06-28 00:04:19,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 335 events. 172/335 cut-off events. For 3522/3522 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1411 event pairs, 47 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1651. Up to 270 conditions per place. [2024-06-28 00:04:19,112 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-28 00:04:19,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 710 flow [2024-06-28 00:04:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-28 00:04:19,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2024-06-28 00:04:19,113 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 500 flow. Second operand 7 states and 99 transitions. [2024-06-28 00:04:19,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 710 flow [2024-06-28 00:04:19,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 677 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:19,118 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 534 flow [2024-06-28 00:04:19,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-28 00:04:19,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 00:04:19,119 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 534 flow [2024-06-28 00:04:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:19,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:04:19,120 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)] === [2024-06-28 00:04:19,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 128239521, now seen corresponding path program 2 times [2024-06-28 00:04:19,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227020557] [2024-06-28 00:04:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:20,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227020557] [2024-06-28 00:04:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227020557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339061406] [2024-06-28 00:04:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:20,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:20,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:20,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:20,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:20,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:20,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:20,463 INFO L124 PetriNetUnfolderBase]: 169/330 cut-off events. [2024-06-28 00:04:20,463 INFO L125 PetriNetUnfolderBase]: For 3906/3906 co-relation queries the response was YES. [2024-06-28 00:04:20,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 330 events. 169/330 cut-off events. For 3906/3906 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1361 event pairs, 47 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1670. Up to 272 conditions per place. [2024-06-28 00:04:20,466 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2024-06-28 00:04:20,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 698 flow [2024-06-28 00:04:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 00:04:20,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 00:04:20,467 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 534 flow. Second operand 8 states and 105 transitions. [2024-06-28 00:04:20,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 698 flow [2024-06-28 00:04:20,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 637 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:20,472 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 512 flow [2024-06-28 00:04:20,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-28 00:04:20,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 00:04:20,473 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 512 flow [2024-06-28 00:04:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:20,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:20,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:04:20,474 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)] === [2024-06-28 00:04:20,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 803599391, now seen corresponding path program 1 times [2024-06-28 00:04:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979227243] [2024-06-28 00:04:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979227243] [2024-06-28 00:04:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979227243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174003058] [2024-06-28 00:04:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:22,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:04:22,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:04:22,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:22,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:04:22,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:22,334 INFO L124 PetriNetUnfolderBase]: 186/361 cut-off events. [2024-06-28 00:04:22,335 INFO L125 PetriNetUnfolderBase]: For 4684/4684 co-relation queries the response was YES. [2024-06-28 00:04:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 361 events. 186/361 cut-off events. For 4684/4684 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1492 event pairs, 33 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1852. Up to 252 conditions per place. [2024-06-28 00:04:22,338 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 31 changer transitions 0/85 dead transitions. [2024-06-28 00:04:22,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 840 flow [2024-06-28 00:04:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 00:04:22,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2024-06-28 00:04:22,339 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 512 flow. Second operand 7 states and 115 transitions. [2024-06-28 00:04:22,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 840 flow [2024-06-28 00:04:22,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 798 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:22,345 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 650 flow [2024-06-28 00:04:22,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=650, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-28 00:04:22,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-28 00:04:22,346 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 650 flow [2024-06-28 00:04:22,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:04:22,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:22,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:22,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:04:22,347 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)] === [2024-06-28 00:04:22,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash -580080929, now seen corresponding path program 3 times [2024-06-28 00:04:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924242463] [2024-06-28 00:04:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:22,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:23,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924242463] [2024-06-28 00:04:23,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924242463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:23,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:23,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296027762] [2024-06-28 00:04:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:23,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:23,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:23,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:23,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:23,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:23,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:23,742 INFO L124 PetriNetUnfolderBase]: 184/357 cut-off events. [2024-06-28 00:04:23,743 INFO L125 PetriNetUnfolderBase]: For 5122/5122 co-relation queries the response was YES. [2024-06-28 00:04:23,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 357 events. 184/357 cut-off events. For 5122/5122 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1497 event pairs, 41 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 1998. Up to 272 conditions per place. [2024-06-28 00:04:23,747 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 28 changer transitions 0/83 dead transitions. [2024-06-28 00:04:23,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 886 flow [2024-06-28 00:04:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:04:23,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:04:23,748 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 650 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:04:23,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 886 flow [2024-06-28 00:04:23,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 845 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 00:04:23,759 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 700 flow [2024-06-28 00:04:23,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-28 00:04:23,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-28 00:04:23,760 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 700 flow [2024-06-28 00:04:23,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:23,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:23,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:04:23,761 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)] === [2024-06-28 00:04:23,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -580073985, now seen corresponding path program 2 times [2024-06-28 00:04:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850850025] [2024-06-28 00:04:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:25,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:25,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850850025] [2024-06-28 00:04:25,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850850025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446800630] [2024-06-28 00:04:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:25,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:25,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:25,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:04:25,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 700 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-06-28 00:04:25,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:25,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:04:25,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:25,487 INFO L124 PetriNetUnfolderBase]: 187/362 cut-off events. [2024-06-28 00:04:25,487 INFO L125 PetriNetUnfolderBase]: For 5773/5773 co-relation queries the response was YES. [2024-06-28 00:04:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 362 events. 187/362 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1532 event pairs, 41 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 2088. Up to 281 conditions per place. [2024-06-28 00:04:25,491 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/85 dead transitions. [2024-06-28 00:04:25,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 900 flow [2024-06-28 00:04:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 00:04:25,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-06-28 00:04:25,492 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 700 flow. Second operand 7 states and 104 transitions. [2024-06-28 00:04:25,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 900 flow [2024-06-28 00:04:25,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 825 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:25,500 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 704 flow [2024-06-28 00:04:25,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=704, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-28 00:04:25,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 00:04:25,501 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 704 flow [2024-06-28 00:04:25,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-06-28 00:04:25,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:25,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:25,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:04:25,502 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)] === [2024-06-28 00:04:25,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -571799775, now seen corresponding path program 3 times [2024-06-28 00:04:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011988739] [2024-06-28 00:04:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:25,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011988739] [2024-06-28 00:04:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011988739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966686633] [2024-06-28 00:04:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:26,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:27,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:04:27,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 704 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:04:27,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:27,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:04:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,259 INFO L124 PetriNetUnfolderBase]: 200/385 cut-off events. [2024-06-28 00:04:27,260 INFO L125 PetriNetUnfolderBase]: For 6724/6724 co-relation queries the response was YES. [2024-06-28 00:04:27,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 385 events. 200/385 cut-off events. For 6724/6724 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1636 event pairs, 42 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 2288. Up to 235 conditions per place. [2024-06-28 00:04:27,263 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 44 changer transitions 0/95 dead transitions. [2024-06-28 00:04:27,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 1114 flow [2024-06-28 00:04:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:04:27,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-28 00:04:27,264 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 704 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:04:27,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 1114 flow [2024-06-28 00:04:27,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 1051 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:27,274 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 840 flow [2024-06-28 00:04:27,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=840, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-06-28 00:04:27,274 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-28 00:04:27,274 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 840 flow [2024-06-28 00:04:27,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:04:27,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:04:27,275 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)] === [2024-06-28 00:04:27,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -571503105, now seen corresponding path program 4 times [2024-06-28 00:04:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142565177] [2024-06-28 00:04:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142565177] [2024-06-28 00:04:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142565177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:29,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494433408] [2024-06-28 00:04:29,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:29,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:29,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:29,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:29,658 INFO L124 PetriNetUnfolderBase]: 198/385 cut-off events. [2024-06-28 00:04:29,658 INFO L125 PetriNetUnfolderBase]: For 7458/7458 co-relation queries the response was YES. [2024-06-28 00:04:29,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 385 events. 198/385 cut-off events. For 7458/7458 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1617 event pairs, 37 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 2395. Up to 336 conditions per place. [2024-06-28 00:04:29,661 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-28 00:04:29,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 91 transitions, 1030 flow [2024-06-28 00:04:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:04:29,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:04:29,662 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 840 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:04:29,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 91 transitions, 1030 flow [2024-06-28 00:04:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 91 transitions, 957 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 00:04:29,672 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 800 flow [2024-06-28 00:04:29,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-28 00:04:29,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 00:04:29,673 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 800 flow [2024-06-28 00:04:29,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:29,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:29,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:29,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:04:29,673 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)] === [2024-06-28 00:04:29,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1529617671, now seen corresponding path program 4 times [2024-06-28 00:04:29,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:29,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98928704] [2024-06-28 00:04:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:29,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:30,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:30,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98928704] [2024-06-28 00:04:30,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98928704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:30,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:30,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:30,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147493067] [2024-06-28 00:04:30,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:30,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:30,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 800 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:30,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:30,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:30,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:31,069 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-28 00:04:31,070 INFO L125 PetriNetUnfolderBase]: For 7419/7419 co-relation queries the response was YES. [2024-06-28 00:04:31,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 382 events. 196/382 cut-off events. For 7419/7419 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1626 event pairs, 38 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 2334. Up to 311 conditions per place. [2024-06-28 00:04:31,072 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-28 00:04:31,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 1006 flow [2024-06-28 00:04:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:04:31,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 00:04:31,074 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 800 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:04:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 1006 flow [2024-06-28 00:04:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 967 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:31,085 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 804 flow [2024-06-28 00:04:31,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2024-06-28 00:04:31,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 00:04:31,086 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 804 flow [2024-06-28 00:04:31,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2024-06-28 00:04:31,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:31,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:31,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:04:31,087 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)] === [2024-06-28 00:04:31,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash -571492193, now seen corresponding path program 1 times [2024-06-28 00:04:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719232710] [2024-06-28 00:04:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719232710] [2024-06-28 00:04:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719232710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360746793] [2024-06-28 00:04:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:33,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:33,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:33,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:33,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:33,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:33,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:34,171 INFO L124 PetriNetUnfolderBase]: 193/377 cut-off events. [2024-06-28 00:04:34,171 INFO L125 PetriNetUnfolderBase]: For 7838/7838 co-relation queries the response was YES. [2024-06-28 00:04:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 377 events. 193/377 cut-off events. For 7838/7838 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1593 event pairs, 42 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 2300. Up to 322 conditions per place. [2024-06-28 00:04:34,177 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-28 00:04:34,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 93 transitions, 1002 flow [2024-06-28 00:04:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:04:34,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 00:04:34,180 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 804 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:04:34,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 93 transitions, 1002 flow [2024-06-28 00:04:34,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 93 transitions, 944 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:34,195 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 780 flow [2024-06-28 00:04:34,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=780, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-06-28 00:04:34,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 00:04:34,196 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 780 flow [2024-06-28 00:04:34,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:04:34,197 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)] === [2024-06-28 00:04:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash -171724436, now seen corresponding path program 1 times [2024-06-28 00:04:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:34,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370878394] [2024-06-28 00:04:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:34,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370878394] [2024-06-28 00:04:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370878394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104254077] [2024-06-28 00:04:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:35,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:36,370 INFO L124 PetriNetUnfolderBase]: 201/391 cut-off events. [2024-06-28 00:04:36,371 INFO L125 PetriNetUnfolderBase]: For 8342/8342 co-relation queries the response was YES. [2024-06-28 00:04:36,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 391 events. 201/391 cut-off events. For 8342/8342 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1682 event pairs, 20 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 2419. Up to 306 conditions per place. [2024-06-28 00:04:36,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-28 00:04:36,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 97 transitions, 1094 flow [2024-06-28 00:04:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:04:36,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:04:36,377 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 780 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:04:36,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 97 transitions, 1094 flow [2024-06-28 00:04:36,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 1056 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:36,388 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 873 flow [2024-06-28 00:04:36,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=873, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-06-28 00:04:36,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-28 00:04:36,389 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 873 flow [2024-06-28 00:04:36,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:36,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:36,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:04:36,389 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)] === [2024-06-28 00:04:36,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -315822356, now seen corresponding path program 2 times [2024-06-28 00:04:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106042044] [2024-06-28 00:04:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:37,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106042044] [2024-06-28 00:04:37,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106042044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:37,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:37,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:37,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102084859] [2024-06-28 00:04:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:37,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:37,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:37,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:37,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:37,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:38,241 INFO L124 PetriNetUnfolderBase]: 199/388 cut-off events. [2024-06-28 00:04:38,241 INFO L125 PetriNetUnfolderBase]: For 8670/8670 co-relation queries the response was YES. [2024-06-28 00:04:38,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 388 events. 199/388 cut-off events. For 8670/8670 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1646 event pairs, 30 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 2451. Up to 313 conditions per place. [2024-06-28 00:04:38,245 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-28 00:04:38,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 96 transitions, 1077 flow [2024-06-28 00:04:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:04:38,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:38,246 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 873 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:04:38,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 96 transitions, 1077 flow [2024-06-28 00:04:38,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 96 transitions, 1004 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:38,261 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 849 flow [2024-06-28 00:04:38,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=849, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2024-06-28 00:04:38,262 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 00:04:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 849 flow [2024-06-28 00:04:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:38,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:38,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:04:38,262 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)] === [2024-06-28 00:04:38,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -858221874, now seen corresponding path program 1 times [2024-06-28 00:04:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:38,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482686100] [2024-06-28 00:04:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:38,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482686100] [2024-06-28 00:04:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482686100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:40,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:40,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:40,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229487207] [2024-06-28 00:04:40,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:40,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:04:40,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 849 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:04:40,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:40,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:04:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:40,799 INFO L124 PetriNetUnfolderBase]: 208/404 cut-off events. [2024-06-28 00:04:40,800 INFO L125 PetriNetUnfolderBase]: For 9788/9788 co-relation queries the response was YES. [2024-06-28 00:04:40,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 404 events. 208/404 cut-off events. For 9788/9788 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1717 event pairs, 24 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 2529. Up to 300 conditions per place. [2024-06-28 00:04:40,803 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 31 changer transitions 0/103 dead transitions. [2024-06-28 00:04:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 103 transitions, 1129 flow [2024-06-28 00:04:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 00:04:40,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2024-06-28 00:04:40,804 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 849 flow. Second operand 9 states and 129 transitions. [2024-06-28 00:04:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 103 transitions, 1129 flow [2024-06-28 00:04:40,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 1072 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:40,819 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 933 flow [2024-06-28 00:04:40,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-28 00:04:40,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 00:04:40,820 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 933 flow [2024-06-28 00:04:40,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:04:40,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:40,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:40,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:04:40,821 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)] === [2024-06-28 00:04:40,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash -795281666, now seen corresponding path program 3 times [2024-06-28 00:04:40,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:40,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236219724] [2024-06-28 00:04:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:40,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236219724] [2024-06-28 00:04:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236219724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345464330] [2024-06-28 00:04:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:42,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:42,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:42,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:42,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:42,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:43,029 INFO L124 PetriNetUnfolderBase]: 211/410 cut-off events. [2024-06-28 00:04:43,029 INFO L125 PetriNetUnfolderBase]: For 10095/10095 co-relation queries the response was YES. [2024-06-28 00:04:43,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 410 events. 211/410 cut-off events. For 10095/10095 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1797 event pairs, 33 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 2670. Up to 274 conditions per place. [2024-06-28 00:04:43,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 46 changer transitions 0/106 dead transitions. [2024-06-28 00:04:43,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 1294 flow [2024-06-28 00:04:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:04:43,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:04:43,035 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 933 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:04:43,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 1294 flow [2024-06-28 00:04:43,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 1205 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:43,054 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 1056 flow [2024-06-28 00:04:43,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-28 00:04:43,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 00:04:43,059 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 1056 flow [2024-06-28 00:04:43,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:43,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:43,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:04:43,059 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)] === [2024-06-28 00:04:43,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash -802431506, now seen corresponding path program 4 times [2024-06-28 00:04:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:43,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481631800] [2024-06-28 00:04:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:44,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481631800] [2024-06-28 00:04:44,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481631800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:44,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339895556] [2024-06-28 00:04:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:44,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:44,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 1056 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-28 00:04:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:45,212 INFO L124 PetriNetUnfolderBase]: 214/417 cut-off events. [2024-06-28 00:04:45,213 INFO L125 PetriNetUnfolderBase]: For 11028/11028 co-relation queries the response was YES. [2024-06-28 00:04:45,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 417 events. 214/417 cut-off events. For 11028/11028 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1838 event pairs, 38 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2816. Up to 313 conditions per place. [2024-06-28 00:04:45,217 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 00:04:45,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 109 transitions, 1397 flow [2024-06-28 00:04:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:04:45,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:04:45,220 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 1056 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:04:45,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 109 transitions, 1397 flow [2024-06-28 00:04:45,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 109 transitions, 1305 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:45,246 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 1096 flow [2024-06-28 00:04:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-28 00:04:45,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 00:04:45,250 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 1096 flow [2024-06-28 00:04:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-28 00:04:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:04:45,251 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)] === [2024-06-28 00:04:45,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash -802638896, now seen corresponding path program 5 times [2024-06-28 00:04:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524656621] [2024-06-28 00:04:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:46,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524656621] [2024-06-28 00:04:46,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524656621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:46,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:46,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551229246] [2024-06-28 00:04:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:47,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:47,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 1096 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:47,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:47,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:47,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:47,347 INFO L124 PetriNetUnfolderBase]: 212/414 cut-off events. [2024-06-28 00:04:47,349 INFO L125 PetriNetUnfolderBase]: For 10903/10903 co-relation queries the response was YES. [2024-06-28 00:04:47,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 414 events. 212/414 cut-off events. For 10903/10903 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1820 event pairs, 38 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2768. Up to 317 conditions per place. [2024-06-28 00:04:47,361 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-28 00:04:47,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 1320 flow [2024-06-28 00:04:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:04:47,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:04:47,363 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 1096 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:04:47,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 108 transitions, 1320 flow [2024-06-28 00:04:47,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 108 transitions, 1237 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:47,389 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 1078 flow [2024-06-28 00:04:47,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2024-06-28 00:04:47,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 00:04:47,390 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 1078 flow [2024-06-28 00:04:47,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:04:47,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:47,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:47,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:04:47,392 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)] === [2024-06-28 00:04:47,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -545923060, now seen corresponding path program 2 times [2024-06-28 00:04:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522626177] [2024-06-28 00:04:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:49,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522626177] [2024-06-28 00:04:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522626177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:49,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667153921] [2024-06-28 00:04:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:49,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:49,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:04:49,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:04:49,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:49,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:04:49,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:49,976 INFO L124 PetriNetUnfolderBase]: 215/417 cut-off events. [2024-06-28 00:04:49,977 INFO L125 PetriNetUnfolderBase]: For 11478/11478 co-relation queries the response was YES. [2024-06-28 00:04:49,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2883 conditions, 417 events. 215/417 cut-off events. For 11478/11478 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1836 event pairs, 38 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2822. Up to 288 conditions per place. [2024-06-28 00:04:49,981 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-06-28 00:04:49,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 111 transitions, 1338 flow [2024-06-28 00:04:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 00:04:49,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-28 00:04:49,982 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 1078 flow. Second operand 8 states and 120 transitions. [2024-06-28 00:04:49,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 111 transitions, 1338 flow [2024-06-28 00:04:50,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 111 transitions, 1269 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:50,019 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 1126 flow [2024-06-28 00:04:50,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1126, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-28 00:04:50,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 00:04:50,020 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 1126 flow [2024-06-28 00:04:50,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:04:50,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:04:50,025 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)] === [2024-06-28 00:04:50,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash -802423570, now seen corresponding path program 3 times [2024-06-28 00:04:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021333070] [2024-06-28 00:04:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:52,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:52,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021333070] [2024-06-28 00:04:52,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021333070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:52,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:52,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:52,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399490758] [2024-06-28 00:04:52,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:52,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:52,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:04:52,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 1126 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:04:52,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:04:52,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:53,005 INFO L124 PetriNetUnfolderBase]: 218/422 cut-off events. [2024-06-28 00:04:53,005 INFO L125 PetriNetUnfolderBase]: For 12328/12328 co-relation queries the response was YES. [2024-06-28 00:04:53,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 422 events. 218/422 cut-off events. For 12328/12328 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1851 event pairs, 38 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 2926. Up to 330 conditions per place. [2024-06-28 00:04:53,009 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-28 00:04:53,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 113 transitions, 1394 flow [2024-06-28 00:04:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:04:53,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-28 00:04:53,022 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 1126 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:04:53,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 113 transitions, 1394 flow [2024-06-28 00:04:53,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 113 transitions, 1293 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:53,043 INFO L231 Difference]: Finished difference. Result has 125 places, 105 transitions, 1120 flow [2024-06-28 00:04:53,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=125, PETRI_TRANSITIONS=105} [2024-06-28 00:04:53,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 00:04:53,044 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 105 transitions, 1120 flow [2024-06-28 00:04:53,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:04:53,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:53,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:04:53,045 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)] === [2024-06-28 00:04:53,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -536726290, now seen corresponding path program 4 times [2024-06-28 00:04:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26696882] [2024-06-28 00:04:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:56,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:56,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26696882] [2024-06-28 00:04:56,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26696882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:56,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428973492] [2024-06-28 00:04:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:56,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:56,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:56,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:56,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:56,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 105 transitions, 1120 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:56,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:56,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:56,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:56,466 INFO L124 PetriNetUnfolderBase]: 221/434 cut-off events. [2024-06-28 00:04:56,467 INFO L125 PetriNetUnfolderBase]: For 13337/13337 co-relation queries the response was YES. [2024-06-28 00:04:56,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 434 events. 221/434 cut-off events. For 13337/13337 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1940 event pairs, 34 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2970. Up to 372 conditions per place. [2024-06-28 00:04:56,469 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-28 00:04:56,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 115 transitions, 1396 flow [2024-06-28 00:04:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 00:04:56,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 00:04:56,470 INFO L175 Difference]: Start difference. First operand has 125 places, 105 transitions, 1120 flow. Second operand 9 states and 113 transitions. [2024-06-28 00:04:56,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 115 transitions, 1396 flow [2024-06-28 00:04:56,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 115 transitions, 1317 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:56,493 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 1118 flow [2024-06-28 00:04:56,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1118, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-06-28 00:04:56,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 00:04:56,493 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 1118 flow [2024-06-28 00:04:56,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:56,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:56,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:04:56,493 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)] === [2024-06-28 00:04:56,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash -536399860, now seen corresponding path program 5 times [2024-06-28 00:04:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:56,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961227828] [2024-06-28 00:04:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961227828] [2024-06-28 00:04:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961227828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816001169] [2024-06-28 00:04:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:58,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:04:58,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:58,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:58,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:04:58,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:58,972 INFO L124 PetriNetUnfolderBase]: 219/429 cut-off events. [2024-06-28 00:04:58,972 INFO L125 PetriNetUnfolderBase]: For 13552/13552 co-relation queries the response was YES. [2024-06-28 00:04:58,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 429 events. 219/429 cut-off events. For 13552/13552 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1905 event pairs, 30 based on Foata normal form. 1/429 useless extension candidates. Maximal degree in co-relation 2906. Up to 363 conditions per place. [2024-06-28 00:04:58,975 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-28 00:04:58,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 118 transitions, 1406 flow [2024-06-28 00:04:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:04:58,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:04:58,977 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 1118 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:04:58,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 118 transitions, 1406 flow [2024-06-28 00:04:58,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 118 transitions, 1345 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:59,000 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1146 flow [2024-06-28 00:04:59,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1146, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-28 00:04:59,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 00:04:59,000 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1146 flow [2024-06-28 00:04:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:04:59,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:59,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:59,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:04:59,001 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)] === [2024-06-28 00:04:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -560757146, now seen corresponding path program 6 times [2024-06-28 00:04:59,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289729986] [2024-06-28 00:04:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289729986] [2024-06-28 00:05:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289729986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623803023] [2024-06-28 00:05:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:00,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:00,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:00,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:00,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:00,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:00,858 INFO L124 PetriNetUnfolderBase]: 216/424 cut-off events. [2024-06-28 00:05:00,860 INFO L125 PetriNetUnfolderBase]: For 13549/13549 co-relation queries the response was YES. [2024-06-28 00:05:00,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 424 events. 216/424 cut-off events. For 13549/13549 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1861 event pairs, 23 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 2850. Up to 342 conditions per place. [2024-06-28 00:05:00,865 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-06-28 00:05:00,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 120 transitions, 1406 flow [2024-06-28 00:05:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:05:00,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:05:00,872 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1146 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:05:00,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 120 transitions, 1406 flow [2024-06-28 00:05:00,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 120 transitions, 1325 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:00,921 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 1112 flow [2024-06-28 00:05:00,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2024-06-28 00:05:00,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 00:05:00,923 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 1112 flow [2024-06-28 00:05:00,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:00,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:00,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:05:00,923 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)] === [2024-06-28 00:05:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash -355833524, now seen corresponding path program 7 times [2024-06-28 00:05:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097047787] [2024-06-28 00:05:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097047787] [2024-06-28 00:05:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097047787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114579430] [2024-06-28 00:05:02,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:03,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:03,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 1112 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:03,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:03,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:03,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:03,402 INFO L124 PetriNetUnfolderBase]: 214/421 cut-off events. [2024-06-28 00:05:03,403 INFO L125 PetriNetUnfolderBase]: For 13452/13452 co-relation queries the response was YES. [2024-06-28 00:05:03,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 421 events. 214/421 cut-off events. For 13452/13452 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1857 event pairs, 23 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2776. Up to 330 conditions per place. [2024-06-28 00:05:03,406 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-28 00:05:03,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 120 transitions, 1372 flow [2024-06-28 00:05:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:05:03,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:05:03,407 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 1112 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:05:03,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 120 transitions, 1372 flow [2024-06-28 00:05:03,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1275 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:03,432 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 1070 flow [2024-06-28 00:05:03,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-06-28 00:05:03,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 00:05:03,433 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 1070 flow [2024-06-28 00:05:03,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:03,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:03,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:03,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:05:03,434 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)] === [2024-06-28 00:05:03,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1034923520, now seen corresponding path program 1 times [2024-06-28 00:05:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126790226] [2024-06-28 00:05:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126790226] [2024-06-28 00:05:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126790226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:04,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:04,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398417750] [2024-06-28 00:05:04,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:04,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:04,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:04,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:04,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 1070 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:04,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:04,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:04,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:05,080 INFO L124 PetriNetUnfolderBase]: 218/426 cut-off events. [2024-06-28 00:05:05,080 INFO L125 PetriNetUnfolderBase]: For 14500/14500 co-relation queries the response was YES. [2024-06-28 00:05:05,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 426 events. 218/426 cut-off events. For 14500/14500 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1885 event pairs, 36 based on Foata normal form. 2/425 useless extension candidates. Maximal degree in co-relation 2780. Up to 344 conditions per place. [2024-06-28 00:05:05,085 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 94 selfloop transitions, 21 changer transitions 0/119 dead transitions. [2024-06-28 00:05:05,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 119 transitions, 1336 flow [2024-06-28 00:05:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:05:05,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-28 00:05:05,088 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 1070 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:05:05,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 119 transitions, 1336 flow [2024-06-28 00:05:05,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 119 transitions, 1203 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:05,116 INFO L231 Difference]: Finished difference. Result has 128 places, 110 transitions, 999 flow [2024-06-28 00:05:05,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=128, PETRI_TRANSITIONS=110} [2024-06-28 00:05:05,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-28 00:05:05,117 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 110 transitions, 999 flow [2024-06-28 00:05:05,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:05,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:05,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:05,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:05:05,117 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)] === [2024-06-28 00:05:05,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1139993804, now seen corresponding path program 2 times [2024-06-28 00:05:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826109797] [2024-06-28 00:05:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:06,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:06,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826109797] [2024-06-28 00:05:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826109797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:06,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904020163] [2024-06-28 00:05:06,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:06,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:06,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 110 transitions, 999 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:06,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:06,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:06,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:06,561 INFO L124 PetriNetUnfolderBase]: 222/438 cut-off events. [2024-06-28 00:05:06,561 INFO L125 PetriNetUnfolderBase]: For 15286/15286 co-relation queries the response was YES. [2024-06-28 00:05:06,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 438 events. 222/438 cut-off events. For 15286/15286 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1986 event pairs, 31 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2740. Up to 358 conditions per place. [2024-06-28 00:05:06,566 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-28 00:05:06,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 121 transitions, 1275 flow [2024-06-28 00:05:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:05:06,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:05:06,570 INFO L175 Difference]: Start difference. First operand has 128 places, 110 transitions, 999 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:05:06,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 121 transitions, 1275 flow [2024-06-28 00:05:06,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1223 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:06,613 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 1005 flow [2024-06-28 00:05:06,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1005, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-06-28 00:05:06,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 00:05:06,614 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 1005 flow [2024-06-28 00:05:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:06,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:06,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:06,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:05:06,614 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)] === [2024-06-28 00:05:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1125540898, now seen corresponding path program 3 times [2024-06-28 00:05:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928100646] [2024-06-28 00:05:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:06,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928100646] [2024-06-28 00:05:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928100646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190123172] [2024-06-28 00:05:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:07,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:07,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 1005 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:07,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:07,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:07,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:08,138 INFO L124 PetriNetUnfolderBase]: 231/457 cut-off events. [2024-06-28 00:05:08,145 INFO L125 PetriNetUnfolderBase]: For 16146/16146 co-relation queries the response was YES. [2024-06-28 00:05:08,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 457 events. 231/457 cut-off events. For 16146/16146 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2122 event pairs, 29 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 2820. Up to 368 conditions per place. [2024-06-28 00:05:08,150 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2024-06-28 00:05:08,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 125 transitions, 1301 flow [2024-06-28 00:05:08,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:05:08,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:05:08,153 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 1005 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:05:08,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 125 transitions, 1301 flow [2024-06-28 00:05:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 1253 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:08,208 INFO L231 Difference]: Finished difference. Result has 134 places, 113 transitions, 1023 flow [2024-06-28 00:05:08,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=134, PETRI_TRANSITIONS=113} [2024-06-28 00:05:08,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 00:05:08,211 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 113 transitions, 1023 flow [2024-06-28 00:05:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:08,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:08,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:05:08,211 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:08,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1200378204, now seen corresponding path program 1 times [2024-06-28 00:05:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:08,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677858288] [2024-06-28 00:05:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677858288] [2024-06-28 00:05:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677858288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338725627] [2024-06-28 00:05:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:09,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:09,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:09,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:09,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:10,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 113 transitions, 1023 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2024-06-28 00:05:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:10,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:10,327 INFO L124 PetriNetUnfolderBase]: 247/488 cut-off events. [2024-06-28 00:05:10,328 INFO L125 PetriNetUnfolderBase]: For 18663/18663 co-relation queries the response was YES. [2024-06-28 00:05:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 488 events. 247/488 cut-off events. For 18663/18663 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2302 event pairs, 20 based on Foata normal form. 2/489 useless extension candidates. Maximal degree in co-relation 3106. Up to 328 conditions per place. [2024-06-28 00:05:10,332 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 44 changer transitions 0/130 dead transitions. [2024-06-28 00:05:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1467 flow [2024-06-28 00:05:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:05:10,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-28 00:05:10,333 INFO L175 Difference]: Start difference. First operand has 134 places, 113 transitions, 1023 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:05:10,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1467 flow [2024-06-28 00:05:10,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 130 transitions, 1421 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:10,370 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 1156 flow [2024-06-28 00:05:10,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2024-06-28 00:05:10,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 00:05:10,371 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 1156 flow [2024-06-28 00:05:10,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2024-06-28 00:05:10,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:10,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:10,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:05:10,371 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:10,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1028489470, now seen corresponding path program 2 times [2024-06-28 00:05:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:10,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572515420] [2024-06-28 00:05:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572515420] [2024-06-28 00:05:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572515420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:12,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714909061] [2024-06-28 00:05:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:12,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:12,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 118 transitions, 1156 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:12,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:12,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:12,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:13,010 INFO L124 PetriNetUnfolderBase]: 245/485 cut-off events. [2024-06-28 00:05:13,011 INFO L125 PetriNetUnfolderBase]: For 17986/17986 co-relation queries the response was YES. [2024-06-28 00:05:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 485 events. 245/485 cut-off events. For 17986/17986 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2268 event pairs, 28 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 3149. Up to 327 conditions per place. [2024-06-28 00:05:13,019 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 44 changer transitions 0/131 dead transitions. [2024-06-28 00:05:13,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1550 flow [2024-06-28 00:05:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:05:13,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-28 00:05:13,033 INFO L175 Difference]: Start difference. First operand has 137 places, 118 transitions, 1156 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:05:13,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1550 flow [2024-06-28 00:05:13,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 1463 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:13,095 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1199 flow [2024-06-28 00:05:13,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1199, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-28 00:05:13,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 00:05:13,095 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1199 flow [2024-06-28 00:05:13,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:13,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:13,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:13,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:05:13,096 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -962611246, now seen corresponding path program 1 times [2024-06-28 00:05:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837027650] [2024-06-28 00:05:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:13,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:15,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837027650] [2024-06-28 00:05:15,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837027650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:15,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:15,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:15,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494661461] [2024-06-28 00:05:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:15,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:15,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:15,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:15,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1199 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:05:15,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:15,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:15,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:16,108 INFO L124 PetriNetUnfolderBase]: 261/521 cut-off events. [2024-06-28 00:05:16,108 INFO L125 PetriNetUnfolderBase]: For 27250/27250 co-relation queries the response was YES. [2024-06-28 00:05:16,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 521 events. 261/521 cut-off events. For 27250/27250 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2491 event pairs, 24 based on Foata normal form. 10/530 useless extension candidates. Maximal degree in co-relation 3387. Up to 367 conditions per place. [2024-06-28 00:05:16,113 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 31 changer transitions 4/136 dead transitions. [2024-06-28 00:05:16,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 1561 flow [2024-06-28 00:05:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:05:16,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-28 00:05:16,114 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1199 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:05:16,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 1561 flow [2024-06-28 00:05:16,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 136 transitions, 1472 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:16,151 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1201 flow [2024-06-28 00:05:16,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1201, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2024-06-28 00:05:16,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-28 00:05:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1201 flow [2024-06-28 00:05:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:05:16,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:16,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:05:16,158 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:16,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash 549441602, now seen corresponding path program 4 times [2024-06-28 00:05:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:16,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226473233] [2024-06-28 00:05:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:16,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:17,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:17,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226473233] [2024-06-28 00:05:17,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226473233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:17,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196405144] [2024-06-28 00:05:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:17,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:17,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:17,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:17,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1201 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:17,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:17,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:17,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:17,784 INFO L124 PetriNetUnfolderBase]: 259/516 cut-off events. [2024-06-28 00:05:17,785 INFO L125 PetriNetUnfolderBase]: For 21308/21308 co-relation queries the response was YES. [2024-06-28 00:05:17,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 516 events. 259/516 cut-off events. For 21308/21308 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2479 event pairs, 35 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3386. Up to 410 conditions per place. [2024-06-28 00:05:17,814 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 29 changer transitions 0/129 dead transitions. [2024-06-28 00:05:17,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 129 transitions, 1489 flow [2024-06-28 00:05:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:05:17,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:05:17,815 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1201 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:05:17,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 129 transitions, 1489 flow [2024-06-28 00:05:17,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 129 transitions, 1405 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:17,883 INFO L231 Difference]: Finished difference. Result has 146 places, 121 transitions, 1201 flow [2024-06-28 00:05:17,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1201, PETRI_PLACES=146, PETRI_TRANSITIONS=121} [2024-06-28 00:05:17,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 00:05:17,885 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 121 transitions, 1201 flow [2024-06-28 00:05:17,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:17,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:17,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:05:17,886 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:17,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash 256246208, now seen corresponding path program 3 times [2024-06-28 00:05:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362707692] [2024-06-28 00:05:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:20,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362707692] [2024-06-28 00:05:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362707692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489047137] [2024-06-28 00:05:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:20,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:20,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:20,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 121 transitions, 1201 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:05:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:21,135 INFO L124 PetriNetUnfolderBase]: 285/564 cut-off events. [2024-06-28 00:05:21,135 INFO L125 PetriNetUnfolderBase]: For 25825/25825 co-relation queries the response was YES. [2024-06-28 00:05:21,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 564 events. 285/564 cut-off events. For 25825/25825 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2786 event pairs, 40 based on Foata normal form. 2/561 useless extension candidates. Maximal degree in co-relation 3882. Up to 299 conditions per place. [2024-06-28 00:05:21,140 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 62 changer transitions 0/144 dead transitions. [2024-06-28 00:05:21,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 144 transitions, 1971 flow [2024-06-28 00:05:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:05:21,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-28 00:05:21,142 INFO L175 Difference]: Start difference. First operand has 146 places, 121 transitions, 1201 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:05:21,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 144 transitions, 1971 flow [2024-06-28 00:05:21,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 1897 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:21,184 INFO L231 Difference]: Finished difference. Result has 148 places, 130 transitions, 1430 flow [2024-06-28 00:05:21,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2024-06-28 00:05:21,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 00:05:21,184 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 1430 flow [2024-06-28 00:05:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:05:21,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:21,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:21,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:05:21,185 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:21,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 256009058, now seen corresponding path program 4 times [2024-06-28 00:05:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258272765] [2024-06-28 00:05:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258272765] [2024-06-28 00:05:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258272765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:24,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:24,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543779951] [2024-06-28 00:05:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:24,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:24,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:24,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:24,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 1430 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:24,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:24,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:24,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:24,728 INFO L124 PetriNetUnfolderBase]: 283/565 cut-off events. [2024-06-28 00:05:24,728 INFO L125 PetriNetUnfolderBase]: For 25180/25180 co-relation queries the response was YES. [2024-06-28 00:05:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 565 events. 283/565 cut-off events. For 25180/25180 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2792 event pairs, 42 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3938. Up to 358 conditions per place. [2024-06-28 00:05:24,733 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 60 changer transitions 0/148 dead transitions. [2024-06-28 00:05:24,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 148 transitions, 2068 flow [2024-06-28 00:05:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:05:24,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-28 00:05:24,736 INFO L175 Difference]: Start difference. First operand has 148 places, 130 transitions, 1430 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:05:24,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 148 transitions, 2068 flow [2024-06-28 00:05:24,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 148 transitions, 1933 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-28 00:05:24,786 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1625 flow [2024-06-28 00:05:24,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1625, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-28 00:05:24,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-28 00:05:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1625 flow [2024-06-28 00:05:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:24,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:05:24,790 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:24,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash 541346078, now seen corresponding path program 5 times [2024-06-28 00:05:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:24,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263617367] [2024-06-28 00:05:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263617367] [2024-06-28 00:05:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263617367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:26,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262346243] [2024-06-28 00:05:26,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:26,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:26,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:26,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:26,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1625 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:05:26,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:26,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:27,348 INFO L124 PetriNetUnfolderBase]: 284/568 cut-off events. [2024-06-28 00:05:27,348 INFO L125 PetriNetUnfolderBase]: For 26448/26448 co-relation queries the response was YES. [2024-06-28 00:05:27,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 568 events. 284/568 cut-off events. For 26448/26448 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2833 event pairs, 39 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3997. Up to 476 conditions per place. [2024-06-28 00:05:27,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-28 00:05:27,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 2061 flow [2024-06-28 00:05:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:05:27,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:05:27,355 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1625 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:05:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 2061 flow [2024-06-28 00:05:27,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 149 transitions, 1975 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 00:05:27,411 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 1632 flow [2024-06-28 00:05:27,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1632, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2024-06-28 00:05:27,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-28 00:05:27,412 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 1632 flow [2024-06-28 00:05:27,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:05:27,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:27,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:27,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:05:27,412 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:27,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 894664990, now seen corresponding path program 6 times [2024-06-28 00:05:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:27,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18133643] [2024-06-28 00:05:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:29,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18133643] [2024-06-28 00:05:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18133643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466251643] [2024-06-28 00:05:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:29,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:29,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:29,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 1632 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:05:29,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:29,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:29,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:29,658 INFO L124 PetriNetUnfolderBase]: 290/575 cut-off events. [2024-06-28 00:05:29,659 INFO L125 PetriNetUnfolderBase]: For 27578/27578 co-relation queries the response was YES. [2024-06-28 00:05:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 575 events. 290/575 cut-off events. For 27578/27578 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2870 event pairs, 32 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 4110. Up to 428 conditions per place. [2024-06-28 00:05:29,664 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-28 00:05:29,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 2132 flow [2024-06-28 00:05:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:05:29,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-28 00:05:29,688 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 1632 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:05:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 2132 flow [2024-06-28 00:05:29,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 2054 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:29,773 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1734 flow [2024-06-28 00:05:29,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-28 00:05:29,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 00:05:29,774 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1734 flow [2024-06-28 00:05:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 00:05:29,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:29,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:05:29,775 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:29,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1712451348, now seen corresponding path program 7 times [2024-06-28 00:05:29,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128069831] [2024-06-28 00:05:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:31,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128069831] [2024-06-28 00:05:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128069831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95882175] [2024-06-28 00:05:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:32,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:32,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:32,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:32,508 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2024-06-28 00:05:32,508 INFO L125 PetriNetUnfolderBase]: For 25889/25889 co-relation queries the response was YES. [2024-06-28 00:05:32,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 572 events. 288/572 cut-off events. For 25889/25889 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2840 event pairs, 41 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 4074. Up to 427 conditions per place. [2024-06-28 00:05:32,513 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-28 00:05:32,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 153 transitions, 2146 flow [2024-06-28 00:05:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:05:32,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-28 00:05:32,516 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1734 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:05:32,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 153 transitions, 2146 flow [2024-06-28 00:05:32,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1909 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:32,578 INFO L231 Difference]: Finished difference. Result has 163 places, 144 transitions, 1582 flow [2024-06-28 00:05:32,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=163, PETRI_TRANSITIONS=144} [2024-06-28 00:05:32,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 00:05:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 144 transitions, 1582 flow [2024-06-28 00:05:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:32,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:05:32,581 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:32,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash 887998750, now seen corresponding path program 8 times [2024-06-28 00:05:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219595793] [2024-06-28 00:05:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:34,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219595793] [2024-06-28 00:05:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219595793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223588491] [2024-06-28 00:05:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:34,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:34,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 144 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:34,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:34,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:34,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:34,836 INFO L124 PetriNetUnfolderBase]: 286/573 cut-off events. [2024-06-28 00:05:34,836 INFO L125 PetriNetUnfolderBase]: For 25177/25177 co-relation queries the response was YES. [2024-06-28 00:05:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 573 events. 286/573 cut-off events. For 25177/25177 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2864 event pairs, 43 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 3840. Up to 455 conditions per place. [2024-06-28 00:05:34,842 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 29 changer transitions 0/152 dead transitions. [2024-06-28 00:05:34,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 1896 flow [2024-06-28 00:05:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:05:34,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-28 00:05:34,845 INFO L175 Difference]: Start difference. First operand has 163 places, 144 transitions, 1582 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:05:34,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 1896 flow [2024-06-28 00:05:34,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1795 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:34,979 INFO L231 Difference]: Finished difference. Result has 166 places, 144 transitions, 1544 flow [2024-06-28 00:05:34,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=166, PETRI_TRANSITIONS=144} [2024-06-28 00:05:34,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 00:05:34,980 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 144 transitions, 1544 flow [2024-06-28 00:05:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2024-06-28 00:05:34,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:34,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:34,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:05:34,981 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:34,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 551830526, now seen corresponding path program 2 times [2024-06-28 00:05:34,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622192019] [2024-06-28 00:05:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:34,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622192019] [2024-06-28 00:05:37,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622192019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:37,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:37,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:37,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291277795] [2024-06-28 00:05:37,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:37,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:37,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:37,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 144 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:05:37,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:37,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:37,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,363 INFO L124 PetriNetUnfolderBase]: 297/597 cut-off events. [2024-06-28 00:05:38,363 INFO L125 PetriNetUnfolderBase]: For 30554/30554 co-relation queries the response was YES. [2024-06-28 00:05:38,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 597 events. 297/597 cut-off events. For 30554/30554 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3006 event pairs, 47 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4107. Up to 488 conditions per place. [2024-06-28 00:05:38,367 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-06-28 00:05:38,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 160 transitions, 2048 flow [2024-06-28 00:05:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:05:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:05:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 00:05:38,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 00:05:38,369 INFO L175 Difference]: Start difference. First operand has 166 places, 144 transitions, 1544 flow. Second operand 13 states and 155 transitions. [2024-06-28 00:05:38,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 160 transitions, 2048 flow [2024-06-28 00:05:38,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 160 transitions, 1957 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:38,432 INFO L231 Difference]: Finished difference. Result has 171 places, 146 transitions, 1569 flow [2024-06-28 00:05:38,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1569, PETRI_PLACES=171, PETRI_TRANSITIONS=146} [2024-06-28 00:05:38,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 00:05:38,432 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 146 transitions, 1569 flow [2024-06-28 00:05:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:05:38,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:38,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:05:38,433 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:38,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash 556121730, now seen corresponding path program 3 times [2024-06-28 00:05:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:38,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729617685] [2024-06-28 00:05:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:40,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729617685] [2024-06-28 00:05:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729617685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:40,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:40,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399463109] [2024-06-28 00:05:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:40,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:40,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 146 transitions, 1569 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:05:40,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:40,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:40,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:40,962 INFO L124 PetriNetUnfolderBase]: 301/600 cut-off events. [2024-06-28 00:05:40,962 INFO L125 PetriNetUnfolderBase]: For 32842/32842 co-relation queries the response was YES. [2024-06-28 00:05:40,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4263 conditions, 600 events. 301/600 cut-off events. For 32842/32842 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3041 event pairs, 35 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4182. Up to 484 conditions per place. [2024-06-28 00:05:40,967 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 27 changer transitions 0/157 dead transitions. [2024-06-28 00:05:40,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 157 transitions, 1931 flow [2024-06-28 00:05:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:05:40,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-28 00:05:40,968 INFO L175 Difference]: Start difference. First operand has 171 places, 146 transitions, 1569 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:05:40,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 157 transitions, 1931 flow [2024-06-28 00:05:41,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1866 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:41,039 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 1598 flow [2024-06-28 00:05:41,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2024-06-28 00:05:41,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 00:05:41,040 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 1598 flow [2024-06-28 00:05:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:05:41,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:41,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:41,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:05:41,040 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:41,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 541355006, now seen corresponding path program 4 times [2024-06-28 00:05:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931017154] [2024-06-28 00:05:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:43,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:43,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931017154] [2024-06-28 00:05:43,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931017154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:43,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:43,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:43,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649640116] [2024-06-28 00:05:43,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:43,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:43,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:43,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:43,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:43,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 1598 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:05:43,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:43,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:43,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:43,753 INFO L124 PetriNetUnfolderBase]: 305/611 cut-off events. [2024-06-28 00:05:43,753 INFO L125 PetriNetUnfolderBase]: For 33208/33208 co-relation queries the response was YES. [2024-06-28 00:05:43,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 611 events. 305/611 cut-off events. For 33208/33208 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3105 event pairs, 49 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 4250. Up to 523 conditions per place. [2024-06-28 00:05:43,758 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 20 changer transitions 0/158 dead transitions. [2024-06-28 00:05:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 1956 flow [2024-06-28 00:05:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:05:43,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:05:43,760 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 1598 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:05:43,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 1956 flow [2024-06-28 00:05:43,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1872 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:43,834 INFO L231 Difference]: Finished difference. Result has 175 places, 148 transitions, 1588 flow [2024-06-28 00:05:43,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1588, PETRI_PLACES=175, PETRI_TRANSITIONS=148} [2024-06-28 00:05:43,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 00:05:43,834 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 148 transitions, 1588 flow [2024-06-28 00:05:43,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:05:43,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:43,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:43,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:05:43,835 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:43,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash 546222784, now seen corresponding path program 5 times [2024-06-28 00:05:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:43,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403157634] [2024-06-28 00:05:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:48,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:48,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403157634] [2024-06-28 00:05:48,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403157634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:48,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:48,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682522881] [2024-06-28 00:05:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:48,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:48,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:48,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:48,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:48,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 148 transitions, 1588 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-28 00:05:48,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:48,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:48,908 INFO L124 PetriNetUnfolderBase]: 302/606 cut-off events. [2024-06-28 00:05:48,908 INFO L125 PetriNetUnfolderBase]: For 31770/31770 co-relation queries the response was YES. [2024-06-28 00:05:48,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 606 events. 302/606 cut-off events. For 31770/31770 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3078 event pairs, 41 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 4058. Up to 518 conditions per place. [2024-06-28 00:05:48,915 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2024-06-28 00:05:48,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 159 transitions, 1922 flow [2024-06-28 00:05:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:05:48,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:05:48,920 INFO L175 Difference]: Start difference. First operand has 175 places, 148 transitions, 1588 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:05:48,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 159 transitions, 1922 flow [2024-06-28 00:05:48,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 159 transitions, 1836 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:48,993 INFO L231 Difference]: Finished difference. Result has 177 places, 148 transitions, 1548 flow [2024-06-28 00:05:48,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1548, PETRI_PLACES=177, PETRI_TRANSITIONS=148} [2024-06-28 00:05:48,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 00:05:48,994 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 148 transitions, 1548 flow [2024-06-28 00:05:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-28 00:05:48,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:48,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:48,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:05:48,996 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:48,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash 251003584, now seen corresponding path program 6 times [2024-06-28 00:05:48,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:48,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098303288] [2024-06-28 00:05:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:48,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098303288] [2024-06-28 00:05:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098303288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:51,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793245904] [2024-06-28 00:05:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:51,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:51,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:51,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:05:51,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 148 transitions, 1548 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:05:51,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:51,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:05:51,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:52,151 INFO L124 PetriNetUnfolderBase]: 299/598 cut-off events. [2024-06-28 00:05:52,151 INFO L125 PetriNetUnfolderBase]: For 29388/29388 co-relation queries the response was YES. [2024-06-28 00:05:52,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 598 events. 299/598 cut-off events. For 29388/29388 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3036 event pairs, 33 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3837. Up to 427 conditions per place. [2024-06-28 00:05:52,157 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 47 changer transitions 0/158 dead transitions. [2024-06-28 00:05:52,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 158 transitions, 1878 flow [2024-06-28 00:05:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 00:05:52,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48028673835125446 [2024-06-28 00:05:52,159 INFO L175 Difference]: Start difference. First operand has 177 places, 148 transitions, 1548 flow. Second operand 9 states and 134 transitions. [2024-06-28 00:05:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 158 transitions, 1878 flow [2024-06-28 00:05:52,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 158 transitions, 1830 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:52,252 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1598 flow [2024-06-28 00:05:52,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-28 00:05:52,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-28 00:05:52,252 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1598 flow [2024-06-28 00:05:52,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:05:52,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:52,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:52,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:05:52,253 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:52,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash 307357120, now seen corresponding path program 5 times [2024-06-28 00:05:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63090548] [2024-06-28 00:05:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:52,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63090548] [2024-06-28 00:05:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63090548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:53,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983913844] [2024-06-28 00:05:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:53,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:53,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:53,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:53,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1598 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:53,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:53,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:53,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:53,813 INFO L124 PetriNetUnfolderBase]: 310/623 cut-off events. [2024-06-28 00:05:53,814 INFO L125 PetriNetUnfolderBase]: For 30169/30169 co-relation queries the response was YES. [2024-06-28 00:05:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 623 events. 310/623 cut-off events. For 30169/30169 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3176 event pairs, 34 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4068. Up to 524 conditions per place. [2024-06-28 00:05:53,818 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 142 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-28 00:05:53,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 166 transitions, 2032 flow [2024-06-28 00:05:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:05:53,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:05:53,819 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1598 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:05:53,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 166 transitions, 2032 flow [2024-06-28 00:05:53,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 166 transitions, 1887 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:53,894 INFO L231 Difference]: Finished difference. Result has 178 places, 153 transitions, 1582 flow [2024-06-28 00:05:53,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=178, PETRI_TRANSITIONS=153} [2024-06-28 00:05:53,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 00:05:53,894 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 153 transitions, 1582 flow [2024-06-28 00:05:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:53,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:53,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:05:53,895 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1649840984, now seen corresponding path program 6 times [2024-06-28 00:05:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197615271] [2024-06-28 00:05:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197615271] [2024-06-28 00:05:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197615271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:54,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:54,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:54,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796050876] [2024-06-28 00:05:54,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:54,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:54,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:54,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:55,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:55,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 153 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:55,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:55,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:55,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:55,302 INFO L124 PetriNetUnfolderBase]: 319/642 cut-off events. [2024-06-28 00:05:55,302 INFO L125 PetriNetUnfolderBase]: For 31459/31459 co-relation queries the response was YES. [2024-06-28 00:05:55,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 642 events. 319/642 cut-off events. For 31459/31459 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3323 event pairs, 25 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4039. Up to 534 conditions per place. [2024-06-28 00:05:55,309 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 19 changer transitions 0/170 dead transitions. [2024-06-28 00:05:55,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 170 transitions, 1984 flow [2024-06-28 00:05:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:05:55,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:05:55,310 INFO L175 Difference]: Start difference. First operand has 178 places, 153 transitions, 1582 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:05:55,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 170 transitions, 1984 flow [2024-06-28 00:05:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 170 transitions, 1871 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:55,419 INFO L231 Difference]: Finished difference. Result has 181 places, 155 transitions, 1547 flow [2024-06-28 00:05:55,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=181, PETRI_TRANSITIONS=155} [2024-06-28 00:05:55,419 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 00:05:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 155 transitions, 1547 flow [2024-06-28 00:05:55,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:55,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:55,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:55,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:05:55,420 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:55,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1047624768, now seen corresponding path program 7 times [2024-06-28 00:05:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:55,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671356992] [2024-06-28 00:05:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:56,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671356992] [2024-06-28 00:05:56,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671356992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:56,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:56,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:56,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705004393] [2024-06-28 00:05:56,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:56,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:56,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:56,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 155 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:56,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:56,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:57,037 INFO L124 PetriNetUnfolderBase]: 323/649 cut-off events. [2024-06-28 00:05:57,038 INFO L125 PetriNetUnfolderBase]: For 32658/32658 co-relation queries the response was YES. [2024-06-28 00:05:57,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 649 events. 323/649 cut-off events. For 32658/32658 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3384 event pairs, 31 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 3973. Up to 542 conditions per place. [2024-06-28 00:05:57,043 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 140 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2024-06-28 00:05:57,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 1931 flow [2024-06-28 00:05:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:05:57,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:05:57,044 INFO L175 Difference]: Start difference. First operand has 181 places, 155 transitions, 1547 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:05:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 1931 flow [2024-06-28 00:05:57,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 1873 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:57,159 INFO L231 Difference]: Finished difference. Result has 184 places, 156 transitions, 1569 flow [2024-06-28 00:05:57,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1569, PETRI_PLACES=184, PETRI_TRANSITIONS=156} [2024-06-28 00:05:57,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 00:05:57,159 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 156 transitions, 1569 flow [2024-06-28 00:05:57,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:57,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:57,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:57,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:05:57,160 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:57,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:57,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1146824098, now seen corresponding path program 8 times [2024-06-28 00:05:57,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:57,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629139221] [2024-06-28 00:05:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:57,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629139221] [2024-06-28 00:05:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629139221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693565336] [2024-06-28 00:05:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:58,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:58,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:58,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:58,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 156 transitions, 1569 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:58,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:58,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:58,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:58,469 INFO L124 PetriNetUnfolderBase]: 332/671 cut-off events. [2024-06-28 00:05:58,469 INFO L125 PetriNetUnfolderBase]: For 33958/33958 co-relation queries the response was YES. [2024-06-28 00:05:58,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 671 events. 332/671 cut-off events. For 33958/33958 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3547 event pairs, 32 based on Foata normal form. 2/672 useless extension candidates. Maximal degree in co-relation 4078. Up to 561 conditions per place. [2024-06-28 00:05:58,475 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 20 changer transitions 0/174 dead transitions. [2024-06-28 00:05:58,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 174 transitions, 1987 flow [2024-06-28 00:05:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:05:58,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:05:58,477 INFO L175 Difference]: Start difference. First operand has 184 places, 156 transitions, 1569 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:05:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 174 transitions, 1987 flow [2024-06-28 00:05:58,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 1917 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:58,587 INFO L231 Difference]: Finished difference. Result has 187 places, 158 transitions, 1585 flow [2024-06-28 00:05:58,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=187, PETRI_TRANSITIONS=158} [2024-06-28 00:05:58,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 00:05:58,588 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 158 transitions, 1585 flow [2024-06-28 00:05:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:58,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:58,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:05:58,588 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:58,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1608164548, now seen corresponding path program 9 times [2024-06-28 00:05:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:58,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607429427] [2024-06-28 00:05:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:59,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607429427] [2024-06-28 00:05:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607429427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:59,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:59,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:59,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127852899] [2024-06-28 00:05:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:59,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:59,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:59,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:59,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:05:59,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 158 transitions, 1585 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:05:59,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:59,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:05:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:59,922 INFO L124 PetriNetUnfolderBase]: 336/679 cut-off events. [2024-06-28 00:05:59,922 INFO L125 PetriNetUnfolderBase]: For 35267/35267 co-relation queries the response was YES. [2024-06-28 00:05:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 679 events. 336/679 cut-off events. For 35267/35267 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3607 event pairs, 39 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4135. Up to 578 conditions per place. [2024-06-28 00:05:59,929 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 149 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2024-06-28 00:05:59,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 174 transitions, 2005 flow [2024-06-28 00:05:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:05:59,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:05:59,930 INFO L175 Difference]: Start difference. First operand has 187 places, 158 transitions, 1585 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:05:59,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 174 transitions, 2005 flow [2024-06-28 00:06:00,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 174 transitions, 1935 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:00,061 INFO L231 Difference]: Finished difference. Result has 191 places, 160 transitions, 1612 flow [2024-06-28 00:06:00,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=191, PETRI_TRANSITIONS=160} [2024-06-28 00:06:00,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:06:00,062 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 160 transitions, 1612 flow [2024-06-28 00:06:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2024-06-28 00:06:00,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:00,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:06:00,063 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:00,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash 301399974, now seen corresponding path program 10 times [2024-06-28 00:06:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179691823] [2024-06-28 00:06:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:00,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:00,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:00,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179691823] [2024-06-28 00:06:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179691823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:00,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:06:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098078637] [2024-06-28 00:06:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:06:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:06:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:06:00,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:06:00,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 160 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:06:00,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:00,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:06:00,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:01,199 INFO L124 PetriNetUnfolderBase]: 298/634 cut-off events. [2024-06-28 00:06:01,199 INFO L125 PetriNetUnfolderBase]: For 33202/33205 co-relation queries the response was YES. [2024-06-28 00:06:01,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 634 events. 298/634 cut-off events. For 33202/33205 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3507 event pairs, 19 based on Foata normal form. 4/631 useless extension candidates. Maximal degree in co-relation 3680. Up to 369 conditions per place. [2024-06-28 00:06:01,206 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 93 selfloop transitions, 23 changer transitions 0/173 dead transitions. [2024-06-28 00:06:01,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 173 transitions, 1876 flow [2024-06-28 00:06:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:06:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:06:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 00:06:01,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-28 00:06:01,214 INFO L175 Difference]: Start difference. First operand has 191 places, 160 transitions, 1612 flow. Second operand 8 states and 118 transitions. [2024-06-28 00:06:01,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 173 transitions, 1876 flow [2024-06-28 00:06:01,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 173 transitions, 1807 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:01,325 INFO L231 Difference]: Finished difference. Result has 193 places, 160 transitions, 1598 flow [2024-06-28 00:06:01,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1598, PETRI_PLACES=193, PETRI_TRANSITIONS=160} [2024-06-28 00:06:01,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 00:06:01,327 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 160 transitions, 1598 flow [2024-06-28 00:06:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-06-28 00:06:01,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:01,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:06:01,328 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash -125108499, now seen corresponding path program 1 times [2024-06-28 00:06:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466345065] [2024-06-28 00:06:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:04,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:04,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466345065] [2024-06-28 00:06:04,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466345065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:04,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:04,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895355870] [2024-06-28 00:06:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:04,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:04,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:04,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:04,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 160 transitions, 1598 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:04,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:04,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:04,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:04,666 INFO L124 PetriNetUnfolderBase]: 337/680 cut-off events. [2024-06-28 00:06:04,666 INFO L125 PetriNetUnfolderBase]: For 33541/33541 co-relation queries the response was YES. [2024-06-28 00:06:04,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4067 conditions, 680 events. 337/680 cut-off events. For 33541/33541 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3624 event pairs, 39 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3975. Up to 563 conditions per place. [2024-06-28 00:06:04,674 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2024-06-28 00:06:04,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 171 transitions, 1968 flow [2024-06-28 00:06:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:06:04,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:06:04,675 INFO L175 Difference]: Start difference. First operand has 193 places, 160 transitions, 1598 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:06:04,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 171 transitions, 1968 flow [2024-06-28 00:06:04,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 171 transitions, 1879 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:04,780 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1585 flow [2024-06-28 00:06:04,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-28 00:06:04,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 00:06:04,781 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1585 flow [2024-06-28 00:06:04,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:04,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:04,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:06:04,781 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:04,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:04,782 INFO L85 PathProgramCache]: Analyzing trace with hash -324410289, now seen corresponding path program 2 times [2024-06-28 00:06:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:04,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174409202] [2024-06-28 00:06:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:04,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174409202] [2024-06-28 00:06:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174409202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779921919] [2024-06-28 00:06:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:06,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:06,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:06,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:06,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:06,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:07,077 INFO L124 PetriNetUnfolderBase]: 341/688 cut-off events. [2024-06-28 00:06:07,077 INFO L125 PetriNetUnfolderBase]: For 32040/32040 co-relation queries the response was YES. [2024-06-28 00:06:07,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 688 events. 341/688 cut-off events. For 32040/32040 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3710 event pairs, 41 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 3943. Up to 580 conditions per place. [2024-06-28 00:06:07,083 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-06-28 00:06:07,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 172 transitions, 1959 flow [2024-06-28 00:06:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:06:07,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:06:07,084 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1585 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:06:07,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 172 transitions, 1959 flow [2024-06-28 00:06:07,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 172 transitions, 1893 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:07,174 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1589 flow [2024-06-28 00:06:07,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1589, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-28 00:06:07,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-28 00:06:07,174 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1589 flow [2024-06-28 00:06:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:07,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:07,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:07,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:06:07,175 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:07,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash -324558159, now seen corresponding path program 3 times [2024-06-28 00:06:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:07,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966008661] [2024-06-28 00:06:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966008661] [2024-06-28 00:06:08,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966008661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:08,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:08,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:08,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976976235] [2024-06-28 00:06:08,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:08,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:08,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:08,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1589 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:06:08,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:08,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:08,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:09,369 INFO L124 PetriNetUnfolderBase]: 345/696 cut-off events. [2024-06-28 00:06:09,370 INFO L125 PetriNetUnfolderBase]: For 33148/33148 co-relation queries the response was YES. [2024-06-28 00:06:09,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 696 events. 345/696 cut-off events. For 33148/33148 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3760 event pairs, 39 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 3985. Up to 583 conditions per place. [2024-06-28 00:06:09,375 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 24 changer transitions 0/174 dead transitions. [2024-06-28 00:06:09,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 1971 flow [2024-06-28 00:06:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:06:09,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:06:09,387 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1589 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:06:09,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 1971 flow [2024-06-28 00:06:09,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 174 transitions, 1911 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:09,467 INFO L231 Difference]: Finished difference. Result has 200 places, 163 transitions, 1599 flow [2024-06-28 00:06:09,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1599, PETRI_PLACES=200, PETRI_TRANSITIONS=163} [2024-06-28 00:06:09,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-28 00:06:09,468 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 163 transitions, 1599 flow [2024-06-28 00:06:09,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:06:09,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:09,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:06:09,469 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:09,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash -443315121, now seen corresponding path program 4 times [2024-06-28 00:06:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:09,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702258320] [2024-06-28 00:06:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702258320] [2024-06-28 00:06:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702258320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:11,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:11,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:11,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714479950] [2024-06-28 00:06:11,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:11,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:11,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:11,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:11,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:11,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 163 transitions, 1599 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:11,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:11,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:11,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:11,553 INFO L124 PetriNetUnfolderBase]: 349/704 cut-off events. [2024-06-28 00:06:11,553 INFO L125 PetriNetUnfolderBase]: For 34302/34302 co-relation queries the response was YES. [2024-06-28 00:06:11,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 704 events. 349/704 cut-off events. For 34302/34302 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3811 event pairs, 43 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4037. Up to 602 conditions per place. [2024-06-28 00:06:11,559 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-28 00:06:11,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 176 transitions, 1999 flow [2024-06-28 00:06:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:06:11,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:06:11,561 INFO L175 Difference]: Start difference. First operand has 200 places, 163 transitions, 1599 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:06:11,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 176 transitions, 1999 flow [2024-06-28 00:06:11,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 1939 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:11,642 INFO L231 Difference]: Finished difference. Result has 203 places, 165 transitions, 1622 flow [2024-06-28 00:06:11,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1622, PETRI_PLACES=203, PETRI_TRANSITIONS=165} [2024-06-28 00:06:11,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 00:06:11,644 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 165 transitions, 1622 flow [2024-06-28 00:06:11,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:11,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:11,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:11,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:06:11,645 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:11,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash -443462991, now seen corresponding path program 5 times [2024-06-28 00:06:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929522082] [2024-06-28 00:06:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929522082] [2024-06-28 00:06:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929522082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:13,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685544905] [2024-06-28 00:06:13,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:13,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:13,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:13,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:13,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 165 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:13,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:13,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:13,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:13,829 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-06-28 00:06:13,829 INFO L125 PetriNetUnfolderBase]: For 35440/35440 co-relation queries the response was YES. [2024-06-28 00:06:13,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 712 events. 353/712 cut-off events. For 35440/35440 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3863 event pairs, 43 based on Foata normal form. 2/711 useless extension candidates. Maximal degree in co-relation 4092. Up to 605 conditions per place. [2024-06-28 00:06:13,837 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-28 00:06:13,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 178 transitions, 2020 flow [2024-06-28 00:06:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:06:13,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:06:13,838 INFO L175 Difference]: Start difference. First operand has 203 places, 165 transitions, 1622 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:06:13,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 178 transitions, 2020 flow [2024-06-28 00:06:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 178 transitions, 1965 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:13,964 INFO L231 Difference]: Finished difference. Result has 206 places, 166 transitions, 1635 flow [2024-06-28 00:06:13,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1635, PETRI_PLACES=206, PETRI_TRANSITIONS=166} [2024-06-28 00:06:13,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-28 00:06:13,965 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 166 transitions, 1635 flow [2024-06-28 00:06:13,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:13,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:13,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:13,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:06:13,966 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:13,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash -532028751, now seen corresponding path program 6 times [2024-06-28 00:06:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305450733] [2024-06-28 00:06:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:15,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305450733] [2024-06-28 00:06:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305450733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:15,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846384489] [2024-06-28 00:06:15,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:15,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:15,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:15,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:15,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 166 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:15,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:15,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:15,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:16,204 INFO L124 PetriNetUnfolderBase]: 357/720 cut-off events. [2024-06-28 00:06:16,204 INFO L125 PetriNetUnfolderBase]: For 36716/36716 co-relation queries the response was YES. [2024-06-28 00:06:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 720 events. 357/720 cut-off events. For 36716/36716 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3919 event pairs, 41 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 4146. Up to 604 conditions per place. [2024-06-28 00:06:16,212 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2024-06-28 00:06:16,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 181 transitions, 2047 flow [2024-06-28 00:06:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:06:16,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:06:16,213 INFO L175 Difference]: Start difference. First operand has 206 places, 166 transitions, 1635 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:06:16,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 181 transitions, 2047 flow [2024-06-28 00:06:16,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1989 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:16,337 INFO L231 Difference]: Finished difference. Result has 208 places, 167 transitions, 1645 flow [2024-06-28 00:06:16,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1645, PETRI_PLACES=208, PETRI_TRANSITIONS=167} [2024-06-28 00:06:16,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 00:06:16,337 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 167 transitions, 1645 flow [2024-06-28 00:06:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:16,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:16,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:16,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:06:16,338 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:16,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2017703507, now seen corresponding path program 1 times [2024-06-28 00:06:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328392060] [2024-06-28 00:06:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328392060] [2024-06-28 00:06:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328392060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:19,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011473385] [2024-06-28 00:06:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:19,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:19,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:19,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:19,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 167 transitions, 1645 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:19,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:19,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:19,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:19,683 INFO L124 PetriNetUnfolderBase]: 360/726 cut-off events. [2024-06-28 00:06:19,683 INFO L125 PetriNetUnfolderBase]: For 35870/35870 co-relation queries the response was YES. [2024-06-28 00:06:19,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 726 events. 360/726 cut-off events. For 35870/35870 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3947 event pairs, 41 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 4183. Up to 600 conditions per place. [2024-06-28 00:06:19,689 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 36 changer transitions 0/180 dead transitions. [2024-06-28 00:06:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 180 transitions, 2061 flow [2024-06-28 00:06:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:06:19,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 00:06:19,698 INFO L175 Difference]: Start difference. First operand has 208 places, 167 transitions, 1645 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:06:19,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 180 transitions, 2061 flow [2024-06-28 00:06:19,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 180 transitions, 2003 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:19,792 INFO L231 Difference]: Finished difference. Result has 210 places, 169 transitions, 1706 flow [2024-06-28 00:06:19,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=210, PETRI_TRANSITIONS=169} [2024-06-28 00:06:19,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 00:06:19,792 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 169 transitions, 1706 flow [2024-06-28 00:06:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:19,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:19,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:06:19,793 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:19,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -125102547, now seen corresponding path program 2 times [2024-06-28 00:06:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515866805] [2024-06-28 00:06:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515866805] [2024-06-28 00:06:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515866805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:22,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697650228] [2024-06-28 00:06:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:22,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:22,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 169 transitions, 1706 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:22,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:23,190 INFO L124 PetriNetUnfolderBase]: 363/731 cut-off events. [2024-06-28 00:06:23,191 INFO L125 PetriNetUnfolderBase]: For 36471/36471 co-relation queries the response was YES. [2024-06-28 00:06:23,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 731 events. 363/731 cut-off events. For 36471/36471 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3967 event pairs, 47 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 4247. Up to 567 conditions per place. [2024-06-28 00:06:23,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 47 changer transitions 0/182 dead transitions. [2024-06-28 00:06:23,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 182 transitions, 2130 flow [2024-06-28 00:06:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:06:23,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-28 00:06:23,197 INFO L175 Difference]: Start difference. First operand has 210 places, 169 transitions, 1706 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:06:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 182 transitions, 2130 flow [2024-06-28 00:06:23,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 182 transitions, 2017 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:23,290 INFO L231 Difference]: Finished difference. Result has 211 places, 171 transitions, 1738 flow [2024-06-28 00:06:23,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=211, PETRI_TRANSITIONS=171} [2024-06-28 00:06:23,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 00:06:23,291 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 171 transitions, 1738 flow [2024-06-28 00:06:23,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:23,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:23,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:06:23,291 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:23,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -117750897, now seen corresponding path program 3 times [2024-06-28 00:06:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432335321] [2024-06-28 00:06:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432335321] [2024-06-28 00:06:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432335321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:27,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105982938] [2024-06-28 00:06:27,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:27,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:27,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:27,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:27,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 171 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:27,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:27,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:28,039 INFO L124 PetriNetUnfolderBase]: 361/728 cut-off events. [2024-06-28 00:06:28,040 INFO L125 PetriNetUnfolderBase]: For 35703/35703 co-relation queries the response was YES. [2024-06-28 00:06:28,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 728 events. 361/728 cut-off events. For 35703/35703 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3969 event pairs, 47 based on Foata normal form. 1/728 useless extension candidates. Maximal degree in co-relation 4159. Up to 549 conditions per place. [2024-06-28 00:06:28,045 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 55 changer transitions 0/182 dead transitions. [2024-06-28 00:06:28,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 182 transitions, 2120 flow [2024-06-28 00:06:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:06:28,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-28 00:06:28,046 INFO L175 Difference]: Start difference. First operand has 211 places, 171 transitions, 1738 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:06:28,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 182 transitions, 2120 flow [2024-06-28 00:06:28,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 1986 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:28,165 INFO L231 Difference]: Finished difference. Result has 214 places, 171 transitions, 1719 flow [2024-06-28 00:06:28,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1719, PETRI_PLACES=214, PETRI_TRANSITIONS=171} [2024-06-28 00:06:28,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 00:06:28,166 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 171 transitions, 1719 flow [2024-06-28 00:06:28,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:28,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:28,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:06:28,167 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:28,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -816457077, now seen corresponding path program 7 times [2024-06-28 00:06:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250466275] [2024-06-28 00:06:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:30,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250466275] [2024-06-28 00:06:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250466275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:30,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:30,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455303983] [2024-06-28 00:06:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:30,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:30,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:31,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:31,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 171 transitions, 1719 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:31,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:31,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:31,431 INFO L124 PetriNetUnfolderBase]: 365/733 cut-off events. [2024-06-28 00:06:31,431 INFO L125 PetriNetUnfolderBase]: For 39076/39076 co-relation queries the response was YES. [2024-06-28 00:06:31,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4308 conditions, 733 events. 365/733 cut-off events. For 39076/39076 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4028 event pairs, 53 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4209. Up to 565 conditions per place. [2024-06-28 00:06:31,437 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 121 selfloop transitions, 56 changer transitions 0/181 dead transitions. [2024-06-28 00:06:31,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 181 transitions, 2117 flow [2024-06-28 00:06:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 00:06:31,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 00:06:31,438 INFO L175 Difference]: Start difference. First operand has 214 places, 171 transitions, 1719 flow. Second operand 9 states and 121 transitions. [2024-06-28 00:06:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 181 transitions, 2117 flow [2024-06-28 00:06:31,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 181 transitions, 1926 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:31,544 INFO L231 Difference]: Finished difference. Result has 212 places, 172 transitions, 1670 flow [2024-06-28 00:06:31,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1670, PETRI_PLACES=212, PETRI_TRANSITIONS=172} [2024-06-28 00:06:31,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 00:06:31,545 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 172 transitions, 1670 flow [2024-06-28 00:06:31,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:31,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:31,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:31,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:06:31,545 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:31,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1740318475, now seen corresponding path program 8 times [2024-06-28 00:06:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133835360] [2024-06-28 00:06:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:33,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:33,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133835360] [2024-06-28 00:06:33,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133835360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143276330] [2024-06-28 00:06:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:33,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:33,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 172 transitions, 1670 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:33,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:33,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:33,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:34,030 INFO L124 PetriNetUnfolderBase]: 369/741 cut-off events. [2024-06-28 00:06:34,030 INFO L125 PetriNetUnfolderBase]: For 40469/40469 co-relation queries the response was YES. [2024-06-28 00:06:34,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 741 events. 369/741 cut-off events. For 40469/40469 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4071 event pairs, 53 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4199. Up to 608 conditions per place. [2024-06-28 00:06:34,038 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 39 changer transitions 0/182 dead transitions. [2024-06-28 00:06:34,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 182 transitions, 2072 flow [2024-06-28 00:06:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:06:34,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:06:34,039 INFO L175 Difference]: Start difference. First operand has 212 places, 172 transitions, 1670 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:06:34,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 182 transitions, 2072 flow [2024-06-28 00:06:34,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 182 transitions, 1908 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:34,137 INFO L231 Difference]: Finished difference. Result has 214 places, 173 transitions, 1616 flow [2024-06-28 00:06:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1616, PETRI_PLACES=214, PETRI_TRANSITIONS=173} [2024-06-28 00:06:34,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 00:06:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 173 transitions, 1616 flow [2024-06-28 00:06:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:34,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:06:34,139 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:34,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1595354191, now seen corresponding path program 9 times [2024-06-28 00:06:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976937259] [2024-06-28 00:06:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:36,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976937259] [2024-06-28 00:06:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976937259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:36,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038489120] [2024-06-28 00:06:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:36,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:36,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 173 transitions, 1616 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:36,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:36,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:36,552 INFO L124 PetriNetUnfolderBase]: 373/749 cut-off events. [2024-06-28 00:06:36,552 INFO L125 PetriNetUnfolderBase]: For 41551/41551 co-relation queries the response was YES. [2024-06-28 00:06:36,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 749 events. 373/749 cut-off events. For 41551/41551 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4131 event pairs, 55 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4169. Up to 622 conditions per place. [2024-06-28 00:06:36,558 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 143 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-06-28 00:06:36,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 183 transitions, 2022 flow [2024-06-28 00:06:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:06:36,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:06:36,559 INFO L175 Difference]: Start difference. First operand has 214 places, 173 transitions, 1616 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:06:36,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 183 transitions, 2022 flow [2024-06-28 00:06:36,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 183 transitions, 1922 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:36,678 INFO L231 Difference]: Finished difference. Result has 216 places, 174 transitions, 1622 flow [2024-06-28 00:06:36,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1622, PETRI_PLACES=216, PETRI_TRANSITIONS=174} [2024-06-28 00:06:36,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-28 00:06:36,679 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 174 transitions, 1622 flow [2024-06-28 00:06:36,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:36,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:36,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:36,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:06:36,680 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:36,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1595206321, now seen corresponding path program 10 times [2024-06-28 00:06:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387455667] [2024-06-28 00:06:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387455667] [2024-06-28 00:06:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387455667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:38,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922313226] [2024-06-28 00:06:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:38,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:38,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:38,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 174 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:38,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:38,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:38,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:38,757 INFO L124 PetriNetUnfolderBase]: 377/757 cut-off events. [2024-06-28 00:06:38,757 INFO L125 PetriNetUnfolderBase]: For 42766/42766 co-relation queries the response was YES. [2024-06-28 00:06:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 757 events. 377/757 cut-off events. For 42766/42766 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4180 event pairs, 55 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 4214. Up to 625 conditions per place. [2024-06-28 00:06:38,763 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 35 changer transitions 0/185 dead transitions. [2024-06-28 00:06:38,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 185 transitions, 2036 flow [2024-06-28 00:06:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:06:38,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:06:38,764 INFO L175 Difference]: Start difference. First operand has 216 places, 174 transitions, 1622 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:06:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 185 transitions, 2036 flow [2024-06-28 00:06:38,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 185 transitions, 1940 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:38,866 INFO L231 Difference]: Finished difference. Result has 218 places, 175 transitions, 1632 flow [2024-06-28 00:06:38,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1632, PETRI_PLACES=218, PETRI_TRANSITIONS=175} [2024-06-28 00:06:38,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-28 00:06:38,867 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 175 transitions, 1632 flow [2024-06-28 00:06:38,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:38,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:38,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:06:38,867 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:38,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -396950693, now seen corresponding path program 4 times [2024-06-28 00:06:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63558986] [2024-06-28 00:06:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:41,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:41,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63558986] [2024-06-28 00:06:41,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63558986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:41,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:41,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921117995] [2024-06-28 00:06:41,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:41,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:41,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:41,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:41,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 175 transitions, 1632 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-28 00:06:41,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:41,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:41,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:41,769 INFO L124 PetriNetUnfolderBase]: 375/757 cut-off events. [2024-06-28 00:06:41,769 INFO L125 PetriNetUnfolderBase]: For 38828/38828 co-relation queries the response was YES. [2024-06-28 00:06:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 757 events. 375/757 cut-off events. For 38828/38828 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4189 event pairs, 75 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 4101. Up to 661 conditions per place. [2024-06-28 00:06:41,775 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 24 changer transitions 0/184 dead transitions. [2024-06-28 00:06:41,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 184 transitions, 2012 flow [2024-06-28 00:06:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:06:41,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:06:41,777 INFO L175 Difference]: Start difference. First operand has 218 places, 175 transitions, 1632 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:06:41,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 184 transitions, 2012 flow [2024-06-28 00:06:41,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 184 transitions, 1896 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:41,883 INFO L231 Difference]: Finished difference. Result has 221 places, 175 transitions, 1569 flow [2024-06-28 00:06:41,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1569, PETRI_PLACES=221, PETRI_TRANSITIONS=175} [2024-06-28 00:06:41,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 00:06:41,884 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 175 transitions, 1569 flow [2024-06-28 00:06:41,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-28 00:06:41,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:41,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:06:41,885 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:41,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash 52478619, now seen corresponding path program 5 times [2024-06-28 00:06:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:41,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781100632] [2024-06-28 00:06:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:43,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:43,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781100632] [2024-06-28 00:06:43,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781100632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:43,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:43,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106988573] [2024-06-28 00:06:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:43,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:43,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:43,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:43,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 175 transitions, 1569 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:43,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:43,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:44,588 INFO L124 PetriNetUnfolderBase]: 378/759 cut-off events. [2024-06-28 00:06:44,589 INFO L125 PetriNetUnfolderBase]: For 39334/39334 co-relation queries the response was YES. [2024-06-28 00:06:44,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 759 events. 378/759 cut-off events. For 39334/39334 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4210 event pairs, 55 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 4058. Up to 605 conditions per place. [2024-06-28 00:06:44,615 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 47 changer transitions 0/187 dead transitions. [2024-06-28 00:06:44,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 187 transitions, 2137 flow [2024-06-28 00:06:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:06:44,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-28 00:06:44,616 INFO L175 Difference]: Start difference. First operand has 221 places, 175 transitions, 1569 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:06:44,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 187 transitions, 2137 flow [2024-06-28 00:06:44,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 187 transitions, 2078 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:44,724 INFO L231 Difference]: Finished difference. Result has 221 places, 177 transitions, 1645 flow [2024-06-28 00:06:44,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1645, PETRI_PLACES=221, PETRI_TRANSITIONS=177} [2024-06-28 00:06:44,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 00:06:44,725 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 177 transitions, 1645 flow [2024-06-28 00:06:44,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:44,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:44,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:06:44,725 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:44,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1957460045, now seen corresponding path program 6 times [2024-06-28 00:06:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:44,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697787695] [2024-06-28 00:06:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:47,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:47,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697787695] [2024-06-28 00:06:47,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697787695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:47,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887380823] [2024-06-28 00:06:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:47,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:47,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:47,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 177 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:47,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:47,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:47,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:48,139 INFO L124 PetriNetUnfolderBase]: 381/764 cut-off events. [2024-06-28 00:06:48,139 INFO L125 PetriNetUnfolderBase]: For 40751/40751 co-relation queries the response was YES. [2024-06-28 00:06:48,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 764 events. 381/764 cut-off events. For 40751/40751 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4249 event pairs, 55 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4163. Up to 609 conditions per place. [2024-06-28 00:06:48,145 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 49 changer transitions 0/189 dead transitions. [2024-06-28 00:06:48,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 189 transitions, 2223 flow [2024-06-28 00:06:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:06:48,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-28 00:06:48,146 INFO L175 Difference]: Start difference. First operand has 221 places, 177 transitions, 1645 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:06:48,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 189 transitions, 2223 flow [2024-06-28 00:06:48,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 189 transitions, 2099 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:48,266 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 1664 flow [2024-06-28 00:06:48,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2024-06-28 00:06:48,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 00:06:48,267 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 1664 flow [2024-06-28 00:06:48,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:48,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:48,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:48,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:06:48,267 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:48,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash -816249315, now seen corresponding path program 7 times [2024-06-28 00:06:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792976838] [2024-06-28 00:06:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:48,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:51,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792976838] [2024-06-28 00:06:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792976838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:51,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470074045] [2024-06-28 00:06:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:51,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:51,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:51,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:51,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:51,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:51,817 INFO L124 PetriNetUnfolderBase]: 384/769 cut-off events. [2024-06-28 00:06:51,817 INFO L125 PetriNetUnfolderBase]: For 41836/41836 co-relation queries the response was YES. [2024-06-28 00:06:51,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4299 conditions, 769 events. 384/769 cut-off events. For 41836/41836 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4280 event pairs, 55 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 4195. Up to 523 conditions per place. [2024-06-28 00:06:51,823 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 75 changer transitions 0/191 dead transitions. [2024-06-28 00:06:51,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 191 transitions, 2242 flow [2024-06-28 00:06:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:06:51,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-28 00:06:51,825 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 1664 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:06:51,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 191 transitions, 2242 flow [2024-06-28 00:06:51,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 191 transitions, 2118 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:51,966 INFO L231 Difference]: Finished difference. Result has 225 places, 181 transitions, 1729 flow [2024-06-28 00:06:51,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=225, PETRI_TRANSITIONS=181} [2024-06-28 00:06:51,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 00:06:51,967 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 181 transitions, 1729 flow [2024-06-28 00:06:51,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:06:51,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:51,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:06:51,968 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:51,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -653653013, now seen corresponding path program 8 times [2024-06-28 00:06:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724070937] [2024-06-28 00:06:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724070937] [2024-06-28 00:06:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724070937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:54,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:54,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:54,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158126180] [2024-06-28 00:06:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:54,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:54,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:54,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:54,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:54,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 181 transitions, 1729 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:54,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:54,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:54,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:55,187 INFO L124 PetriNetUnfolderBase]: 382/766 cut-off events. [2024-06-28 00:06:55,188 INFO L125 PetriNetUnfolderBase]: For 40136/40136 co-relation queries the response was YES. [2024-06-28 00:06:55,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 766 events. 382/766 cut-off events. For 40136/40136 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4252 event pairs, 55 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 4143. Up to 488 conditions per place. [2024-06-28 00:06:55,194 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 92 changer transitions 0/191 dead transitions. [2024-06-28 00:06:55,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 191 transitions, 2275 flow [2024-06-28 00:06:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:06:55,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2024-06-28 00:06:55,195 INFO L175 Difference]: Start difference. First operand has 225 places, 181 transitions, 1729 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:06:55,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 191 transitions, 2275 flow [2024-06-28 00:06:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 191 transitions, 2077 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:55,316 INFO L231 Difference]: Finished difference. Result has 227 places, 181 transitions, 1720 flow [2024-06-28 00:06:55,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=227, PETRI_TRANSITIONS=181} [2024-06-28 00:06:55,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 00:06:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 181 transitions, 1720 flow [2024-06-28 00:06:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:06:55,317 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1595360143, now seen corresponding path program 9 times [2024-06-28 00:06:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778345057] [2024-06-28 00:06:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778345057] [2024-06-28 00:06:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778345057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467490657] [2024-06-28 00:06:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:57,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:57,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:06:57,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 181 transitions, 1720 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:57,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:57,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:06:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:57,913 INFO L124 PetriNetUnfolderBase]: 380/763 cut-off events. [2024-06-28 00:06:57,913 INFO L125 PetriNetUnfolderBase]: For 38089/38089 co-relation queries the response was YES. [2024-06-28 00:06:57,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 763 events. 380/763 cut-off events. For 38089/38089 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4249 event pairs, 57 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 4049. Up to 636 conditions per place. [2024-06-28 00:06:57,919 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2024-06-28 00:06:57,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 190 transitions, 2112 flow [2024-06-28 00:06:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:06:57,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-28 00:06:57,920 INFO L175 Difference]: Start difference. First operand has 227 places, 181 transitions, 1720 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:06:57,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 190 transitions, 2112 flow [2024-06-28 00:06:58,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 190 transitions, 1897 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:58,044 INFO L231 Difference]: Finished difference. Result has 227 places, 181 transitions, 1580 flow [2024-06-28 00:06:58,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=227, PETRI_TRANSITIONS=181} [2024-06-28 00:06:58,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 00:06:58,044 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 181 transitions, 1580 flow [2024-06-28 00:06:58,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:06:58,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:58,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:58,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:06:58,045 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:58,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -815880591, now seen corresponding path program 11 times [2024-06-28 00:06:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120158035] [2024-06-28 00:06:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:59,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:59,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120158035] [2024-06-28 00:06:59,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120158035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:59,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:59,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702707920] [2024-06-28 00:06:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:59,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 181 transitions, 1580 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:59,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:59,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:59,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:59,826 INFO L124 PetriNetUnfolderBase]: 384/775 cut-off events. [2024-06-28 00:06:59,826 INFO L125 PetriNetUnfolderBase]: For 42173/42173 co-relation queries the response was YES. [2024-06-28 00:06:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 775 events. 384/775 cut-off events. For 42173/42173 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4308 event pairs, 45 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4003. Up to 666 conditions per place. [2024-06-28 00:06:59,832 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 21 changer transitions 0/197 dead transitions. [2024-06-28 00:06:59,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 197 transitions, 2036 flow [2024-06-28 00:06:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:06:59,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:06:59,834 INFO L175 Difference]: Start difference. First operand has 227 places, 181 transitions, 1580 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:06:59,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 197 transitions, 2036 flow [2024-06-28 00:06:59,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 197 transitions, 1940 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:59,946 INFO L231 Difference]: Finished difference. Result has 228 places, 182 transitions, 1564 flow [2024-06-28 00:06:59,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1564, PETRI_PLACES=228, PETRI_TRANSITIONS=182} [2024-06-28 00:06:59,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 00:06:59,947 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 182 transitions, 1564 flow [2024-06-28 00:06:59,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:06:59,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:59,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:06:59,948 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:59,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2002126803, now seen corresponding path program 12 times [2024-06-28 00:06:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334023875] [2024-06-28 00:06:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334023875] [2024-06-28 00:07:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334023875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:01,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:01,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451661668] [2024-06-28 00:07:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:01,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:01,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 182 transitions, 1564 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:01,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:01,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:01,741 INFO L124 PetriNetUnfolderBase]: 391/788 cut-off events. [2024-06-28 00:07:01,742 INFO L125 PetriNetUnfolderBase]: For 43726/43726 co-relation queries the response was YES. [2024-06-28 00:07:01,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 788 events. 391/788 cut-off events. For 43726/43726 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4405 event pairs, 49 based on Foata normal form. 2/789 useless extension candidates. Maximal degree in co-relation 4091. Up to 684 conditions per place. [2024-06-28 00:07:01,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-28 00:07:01,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 199 transitions, 2040 flow [2024-06-28 00:07:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:01,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:01,749 INFO L175 Difference]: Start difference. First operand has 228 places, 182 transitions, 1564 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:01,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 199 transitions, 2040 flow [2024-06-28 00:07:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 199 transitions, 1970 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:01,877 INFO L231 Difference]: Finished difference. Result has 231 places, 185 transitions, 1601 flow [2024-06-28 00:07:01,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1601, PETRI_PLACES=231, PETRI_TRANSITIONS=185} [2024-06-28 00:07:01,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:07:01,878 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 185 transitions, 1601 flow [2024-06-28 00:07:01,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:01,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:01,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:01,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:07:01,879 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:01,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2005936083, now seen corresponding path program 13 times [2024-06-28 00:07:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773640905] [2024-06-28 00:07:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:03,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:03,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773640905] [2024-06-28 00:07:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773640905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791614275] [2024-06-28 00:07:03,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:03,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:03,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:03,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:03,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:03,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 185 transitions, 1601 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:03,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:03,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:03,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,572 INFO L124 PetriNetUnfolderBase]: 395/796 cut-off events. [2024-06-28 00:07:03,573 INFO L125 PetriNetUnfolderBase]: For 45067/45067 co-relation queries the response was YES. [2024-06-28 00:07:03,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 796 events. 395/796 cut-off events. For 45067/45067 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4462 event pairs, 45 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4151. Up to 678 conditions per place. [2024-06-28 00:07:03,578 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 20 changer transitions 0/203 dead transitions. [2024-06-28 00:07:03,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 203 transitions, 2079 flow [2024-06-28 00:07:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:07:03,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:07:03,580 INFO L175 Difference]: Start difference. First operand has 231 places, 185 transitions, 1601 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:07:03,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 203 transitions, 2079 flow [2024-06-28 00:07:03,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 203 transitions, 2008 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:03,702 INFO L231 Difference]: Finished difference. Result has 234 places, 186 transitions, 1612 flow [2024-06-28 00:07:03,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1612, PETRI_PLACES=234, PETRI_TRANSITIONS=186} [2024-06-28 00:07:03,703 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 00:07:03,703 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 186 transitions, 1612 flow [2024-06-28 00:07:03,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:03,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:03,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:07:03,704 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:03,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash -692326603, now seen corresponding path program 14 times [2024-06-28 00:07:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:03,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901225105] [2024-06-28 00:07:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:03,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901225105] [2024-06-28 00:07:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901225105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:06,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116351423] [2024-06-28 00:07:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:06,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:06,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 186 transitions, 1612 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:07:06,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:06,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:06,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:06,575 INFO L124 PetriNetUnfolderBase]: 399/803 cut-off events. [2024-06-28 00:07:06,576 INFO L125 PetriNetUnfolderBase]: For 46444/46444 co-relation queries the response was YES. [2024-06-28 00:07:06,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 803 events. 399/803 cut-off events. For 46444/46444 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4501 event pairs, 51 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4200. Up to 679 conditions per place. [2024-06-28 00:07:06,582 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/200 dead transitions. [2024-06-28 00:07:06,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 200 transitions, 2074 flow [2024-06-28 00:07:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:07:06,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:07:06,583 INFO L175 Difference]: Start difference. First operand has 234 places, 186 transitions, 1612 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:07:06,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 200 transitions, 2074 flow [2024-06-28 00:07:06,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 200 transitions, 2002 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:06,717 INFO L231 Difference]: Finished difference. Result has 236 places, 187 transitions, 1650 flow [2024-06-28 00:07:06,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=236, PETRI_TRANSITIONS=187} [2024-06-28 00:07:06,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 00:07:06,718 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 187 transitions, 1650 flow [2024-06-28 00:07:06,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-28 00:07:06,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:06,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:06,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:07:06,718 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:06,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 562314947, now seen corresponding path program 15 times [2024-06-28 00:07:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018169830] [2024-06-28 00:07:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018169830] [2024-06-28 00:07:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018169830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:08,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:08,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287189115] [2024-06-28 00:07:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:08,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:08,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 187 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:08,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:08,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:08,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:08,837 INFO L124 PetriNetUnfolderBase]: 403/811 cut-off events. [2024-06-28 00:07:08,838 INFO L125 PetriNetUnfolderBase]: For 47733/47733 co-relation queries the response was YES. [2024-06-28 00:07:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 811 events. 403/811 cut-off events. For 47733/47733 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4555 event pairs, 53 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4273. Up to 699 conditions per place. [2024-06-28 00:07:08,844 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 27 changer transitions 0/201 dead transitions. [2024-06-28 00:07:08,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 201 transitions, 2116 flow [2024-06-28 00:07:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:08,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:08,845 INFO L175 Difference]: Start difference. First operand has 236 places, 187 transitions, 1650 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 201 transitions, 2116 flow [2024-06-28 00:07:08,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 201 transitions, 2016 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:08,978 INFO L231 Difference]: Finished difference. Result has 238 places, 188 transitions, 1650 flow [2024-06-28 00:07:08,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=238, PETRI_TRANSITIONS=188} [2024-06-28 00:07:08,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 00:07:08,979 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 188 transitions, 1650 flow [2024-06-28 00:07:08,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:08,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:08,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:07:08,979 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:08,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash 562167077, now seen corresponding path program 16 times [2024-06-28 00:07:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:08,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331179051] [2024-06-28 00:07:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:10,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:10,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331179051] [2024-06-28 00:07:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331179051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:10,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:10,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422840368] [2024-06-28 00:07:10,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:10,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:10,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:10,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:10,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 188 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:10,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:10,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:10,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:10,810 INFO L124 PetriNetUnfolderBase]: 407/819 cut-off events. [2024-06-28 00:07:10,810 INFO L125 PetriNetUnfolderBase]: For 48950/48950 co-relation queries the response was YES. [2024-06-28 00:07:10,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4420 conditions, 819 events. 407/819 cut-off events. For 48950/48950 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4609 event pairs, 53 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 4307. Up to 702 conditions per place. [2024-06-28 00:07:10,817 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-28 00:07:10,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 203 transitions, 2124 flow [2024-06-28 00:07:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:10,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:10,818 INFO L175 Difference]: Start difference. First operand has 238 places, 188 transitions, 1650 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:10,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 203 transitions, 2124 flow [2024-06-28 00:07:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 203 transitions, 2034 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:10,963 INFO L231 Difference]: Finished difference. Result has 240 places, 189 transitions, 1660 flow [2024-06-28 00:07:10,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1660, PETRI_PLACES=240, PETRI_TRANSITIONS=189} [2024-06-28 00:07:10,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 00:07:10,964 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 189 transitions, 1660 flow [2024-06-28 00:07:10,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:10,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:10,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:10,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:07:10,964 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:10,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1346162211, now seen corresponding path program 17 times [2024-06-28 00:07:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128421708] [2024-06-28 00:07:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128421708] [2024-06-28 00:07:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128421708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971282158] [2024-06-28 00:07:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:12,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:12,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:12,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 189 transitions, 1660 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:12,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:12,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:12,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:12,877 INFO L124 PetriNetUnfolderBase]: 411/828 cut-off events. [2024-06-28 00:07:12,878 INFO L125 PetriNetUnfolderBase]: For 50378/50378 co-relation queries the response was YES. [2024-06-28 00:07:12,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 828 events. 411/828 cut-off events. For 50378/50378 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4670 event pairs, 54 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 4356. Up to 710 conditions per place. [2024-06-28 00:07:12,886 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 21 changer transitions 0/208 dead transitions. [2024-06-28 00:07:12,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 208 transitions, 2158 flow [2024-06-28 00:07:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:07:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:07:12,901 INFO L175 Difference]: Start difference. First operand has 240 places, 189 transitions, 1660 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:07:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 208 transitions, 2158 flow [2024-06-28 00:07:13,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 208 transitions, 2068 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:13,128 INFO L231 Difference]: Finished difference. Result has 242 places, 190 transitions, 1662 flow [2024-06-28 00:07:13,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1662, PETRI_PLACES=242, PETRI_TRANSITIONS=190} [2024-06-28 00:07:13,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 00:07:13,128 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 190 transitions, 1662 flow [2024-06-28 00:07:13,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:13,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:13,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:07:13,129 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1686357975, now seen corresponding path program 18 times [2024-06-28 00:07:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565198228] [2024-06-28 00:07:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:14,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565198228] [2024-06-28 00:07:14,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565198228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:14,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:14,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:14,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730431890] [2024-06-28 00:07:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:15,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:15,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 190 transitions, 1662 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:15,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:15,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:15,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:15,430 INFO L124 PetriNetUnfolderBase]: 415/836 cut-off events. [2024-06-28 00:07:15,430 INFO L125 PetriNetUnfolderBase]: For 51784/51784 co-relation queries the response was YES. [2024-06-28 00:07:15,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 836 events. 415/836 cut-off events. For 51784/51784 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4713 event pairs, 63 based on Foata normal form. 2/837 useless extension candidates. Maximal degree in co-relation 4401. Up to 732 conditions per place. [2024-06-28 00:07:15,437 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 23 changer transitions 0/207 dead transitions. [2024-06-28 00:07:15,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 207 transitions, 2161 flow [2024-06-28 00:07:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:15,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:15,438 INFO L175 Difference]: Start difference. First operand has 242 places, 190 transitions, 1662 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:15,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 207 transitions, 2161 flow [2024-06-28 00:07:15,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 207 transitions, 2079 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:15,606 INFO L231 Difference]: Finished difference. Result has 245 places, 192 transitions, 1692 flow [2024-06-28 00:07:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=245, PETRI_TRANSITIONS=192} [2024-06-28 00:07:15,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 00:07:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 192 transitions, 1692 flow [2024-06-28 00:07:15,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:15,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:15,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:15,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:07:15,608 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:15,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1674483735, now seen corresponding path program 19 times [2024-06-28 00:07:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477080502] [2024-06-28 00:07:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477080502] [2024-06-28 00:07:16,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477080502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:16,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:16,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:16,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006127611] [2024-06-28 00:07:16,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:16,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:16,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:16,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:16,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:16,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:16,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 192 transitions, 1692 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:16,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:16,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:16,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:17,324 INFO L124 PetriNetUnfolderBase]: 419/844 cut-off events. [2024-06-28 00:07:17,324 INFO L125 PetriNetUnfolderBase]: For 53180/53180 co-relation queries the response was YES. [2024-06-28 00:07:17,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 844 events. 419/844 cut-off events. For 53180/53180 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4760 event pairs, 64 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 4457. Up to 735 conditions per place. [2024-06-28 00:07:17,333 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-28 00:07:17,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2190 flow [2024-06-28 00:07:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:07:17,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:07:17,335 INFO L175 Difference]: Start difference. First operand has 245 places, 192 transitions, 1692 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:07:17,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2190 flow [2024-06-28 00:07:17,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 209 transitions, 2101 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:17,590 INFO L231 Difference]: Finished difference. Result has 248 places, 193 transitions, 1701 flow [2024-06-28 00:07:17,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1701, PETRI_PLACES=248, PETRI_TRANSITIONS=193} [2024-06-28 00:07:17,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 00:07:17,590 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 193 transitions, 1701 flow [2024-06-28 00:07:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2024-06-28 00:07:17,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:17,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:17,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:07:17,591 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:17,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash 753465321, now seen corresponding path program 20 times [2024-06-28 00:07:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:17,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732342869] [2024-06-28 00:07:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:17,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732342869] [2024-06-28 00:07:19,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732342869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:19,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:19,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:19,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246877394] [2024-06-28 00:07:19,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:19,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:19,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:19,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:19,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:19,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 00:07:19,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 193 transitions, 1701 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-06-28 00:07:19,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:19,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 00:07:19,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:19,499 INFO L124 PetriNetUnfolderBase]: 373/793 cut-off events. [2024-06-28 00:07:19,499 INFO L125 PetriNetUnfolderBase]: For 47124/47127 co-relation queries the response was YES. [2024-06-28 00:07:19,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 793 events. 373/793 cut-off events. For 47124/47127 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4655 event pairs, 30 based on Foata normal form. 4/793 useless extension candidates. Maximal degree in co-relation 3875. Up to 482 conditions per place. [2024-06-28 00:07:19,508 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2024-06-28 00:07:19,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 208 transitions, 2017 flow [2024-06-28 00:07:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:07:19,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2024-06-28 00:07:19,509 INFO L175 Difference]: Start difference. First operand has 248 places, 193 transitions, 1701 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:07:19,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 208 transitions, 2017 flow [2024-06-28 00:07:19,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 208 transitions, 1929 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:19,785 INFO L231 Difference]: Finished difference. Result has 249 places, 193 transitions, 1680 flow [2024-06-28 00:07:19,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1680, PETRI_PLACES=249, PETRI_TRANSITIONS=193} [2024-06-28 00:07:19,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 00:07:19,786 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 193 transitions, 1680 flow [2024-06-28 00:07:19,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2024-06-28 00:07:19,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:19,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:19,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:07:19,786 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:19,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1300372207, now seen corresponding path program 1 times [2024-06-28 00:07:19,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819374750] [2024-06-28 00:07:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819374750] [2024-06-28 00:07:22,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819374750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:22,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107498876] [2024-06-28 00:07:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:22,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:22,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:22,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:22,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 193 transitions, 1680 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:22,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:22,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:22,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:22,922 INFO L124 PetriNetUnfolderBase]: 420/846 cut-off events. [2024-06-28 00:07:22,923 INFO L125 PetriNetUnfolderBase]: For 46823/46823 co-relation queries the response was YES. [2024-06-28 00:07:22,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 846 events. 420/846 cut-off events. For 46823/46823 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4795 event pairs, 58 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4171. Up to 658 conditions per place. [2024-06-28 00:07:22,932 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 55 changer transitions 0/206 dead transitions. [2024-06-28 00:07:22,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 206 transitions, 2128 flow [2024-06-28 00:07:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:07:22,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-28 00:07:22,933 INFO L175 Difference]: Start difference. First operand has 249 places, 193 transitions, 1680 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:07:22,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 206 transitions, 2128 flow [2024-06-28 00:07:23,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 206 transitions, 1980 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:23,172 INFO L231 Difference]: Finished difference. Result has 251 places, 194 transitions, 1664 flow [2024-06-28 00:07:23,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=251, PETRI_TRANSITIONS=194} [2024-06-28 00:07:23,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 00:07:23,172 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 194 transitions, 1664 flow [2024-06-28 00:07:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:23,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:23,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:07:23,173 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 416604577, now seen corresponding path program 2 times [2024-06-28 00:07:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628516410] [2024-06-28 00:07:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:25,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:25,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628516410] [2024-06-28 00:07:25,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628516410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:25,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:25,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:25,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341842019] [2024-06-28 00:07:25,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:25,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:25,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:25,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:25,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:25,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 194 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:25,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:25,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:25,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:25,957 INFO L124 PetriNetUnfolderBase]: 453/913 cut-off events. [2024-06-28 00:07:25,958 INFO L125 PetriNetUnfolderBase]: For 79237/79237 co-relation queries the response was YES. [2024-06-28 00:07:25,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 913 events. 453/913 cut-off events. For 79237/79237 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5242 event pairs, 75 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 5227. Up to 642 conditions per place. [2024-06-28 00:07:25,967 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 57 changer transitions 0/213 dead transitions. [2024-06-28 00:07:25,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 213 transitions, 2356 flow [2024-06-28 00:07:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:07:25,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-28 00:07:25,968 INFO L175 Difference]: Start difference. First operand has 251 places, 194 transitions, 1664 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:07:25,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 213 transitions, 2356 flow [2024-06-28 00:07:26,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 213 transitions, 2234 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:26,220 INFO L231 Difference]: Finished difference. Result has 253 places, 196 transitions, 1699 flow [2024-06-28 00:07:26,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=253, PETRI_TRANSITIONS=196} [2024-06-28 00:07:26,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 00:07:26,220 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 196 transitions, 1699 flow [2024-06-28 00:07:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:26,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:26,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:07:26,221 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2042538625, now seen corresponding path program 3 times [2024-06-28 00:07:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415164245] [2024-06-28 00:07:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415164245] [2024-06-28 00:07:28,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415164245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:28,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:28,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:28,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701086820] [2024-06-28 00:07:28,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:28,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:28,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 196 transitions, 1699 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:28,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:28,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:28,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:28,982 INFO L124 PetriNetUnfolderBase]: 494/1000 cut-off events. [2024-06-28 00:07:28,982 INFO L125 PetriNetUnfolderBase]: For 136514/136514 co-relation queries the response was YES. [2024-06-28 00:07:28,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 1000 events. 494/1000 cut-off events. For 136514/136514 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5854 event pairs, 94 based on Foata normal form. 8/1007 useless extension candidates. Maximal degree in co-relation 6487. Up to 761 conditions per place. [2024-06-28 00:07:28,991 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 31 changer transitions 9/217 dead transitions. [2024-06-28 00:07:28,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 2423 flow [2024-06-28 00:07:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:07:28,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2024-06-28 00:07:28,993 INFO L175 Difference]: Start difference. First operand has 253 places, 196 transitions, 1699 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:07:28,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 2423 flow [2024-06-28 00:07:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 217 transitions, 2332 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:29,463 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 1642 flow [2024-06-28 00:07:29,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1642, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-28 00:07:29,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 00:07:29,464 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 1642 flow [2024-06-28 00:07:29,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:29,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:29,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:29,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:07:29,465 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:29,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1466605987, now seen corresponding path program 4 times [2024-06-28 00:07:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:29,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385751319] [2024-06-28 00:07:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385751319] [2024-06-28 00:07:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385751319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:31,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852902827] [2024-06-28 00:07:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:32,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:32,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 1642 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:32,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:32,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:32,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:32,452 INFO L124 PetriNetUnfolderBase]: 467/947 cut-off events. [2024-06-28 00:07:32,452 INFO L125 PetriNetUnfolderBase]: For 112123/112123 co-relation queries the response was YES. [2024-06-28 00:07:32,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6225 conditions, 947 events. 467/947 cut-off events. For 112123/112123 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5483 event pairs, 89 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6102. Up to 818 conditions per place. [2024-06-28 00:07:32,460 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 169 selfloop transitions, 32 changer transitions 0/205 dead transitions. [2024-06-28 00:07:32,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 205 transitions, 2092 flow [2024-06-28 00:07:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:07:32,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-28 00:07:32,462 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 1642 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:07:32,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 205 transitions, 2092 flow [2024-06-28 00:07:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 205 transitions, 2027 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:32,879 INFO L231 Difference]: Finished difference. Result has 253 places, 193 transitions, 1667 flow [2024-06-28 00:07:32,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=253, PETRI_TRANSITIONS=193} [2024-06-28 00:07:32,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 00:07:32,879 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 193 transitions, 1667 flow [2024-06-28 00:07:32,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:32,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:32,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:32,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:07:32,880 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:32,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1736785409, now seen corresponding path program 5 times [2024-06-28 00:07:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774759233] [2024-06-28 00:07:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774759233] [2024-06-28 00:07:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774759233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:35,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:35,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351979195] [2024-06-28 00:07:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:35,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:35,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:35,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 193 transitions, 1667 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:35,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:35,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:35,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:35,916 INFO L124 PetriNetUnfolderBase]: 471/955 cut-off events. [2024-06-28 00:07:35,916 INFO L125 PetriNetUnfolderBase]: For 106548/106548 co-relation queries the response was YES. [2024-06-28 00:07:35,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 955 events. 471/955 cut-off events. For 106548/106548 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5551 event pairs, 81 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6124. Up to 803 conditions per place. [2024-06-28 00:07:35,927 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2024-06-28 00:07:35,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 208 transitions, 2129 flow [2024-06-28 00:07:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:07:35,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 00:07:35,929 INFO L175 Difference]: Start difference. First operand has 253 places, 193 transitions, 1667 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:07:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 208 transitions, 2129 flow [2024-06-28 00:07:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 208 transitions, 2049 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:36,459 INFO L231 Difference]: Finished difference. Result has 256 places, 194 transitions, 1682 flow [2024-06-28 00:07:36,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1682, PETRI_PLACES=256, PETRI_TRANSITIONS=194} [2024-06-28 00:07:36,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 00:07:36,460 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 194 transitions, 1682 flow [2024-06-28 00:07:36,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:36,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:36,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:36,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:07:36,460 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:36,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash -140961697, now seen corresponding path program 6 times [2024-06-28 00:07:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753689160] [2024-06-28 00:07:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753689160] [2024-06-28 00:07:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753689160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:39,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087928514] [2024-06-28 00:07:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:39,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 194 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:40,307 INFO L124 PetriNetUnfolderBase]: 458/932 cut-off events. [2024-06-28 00:07:40,308 INFO L125 PetriNetUnfolderBase]: For 102385/102385 co-relation queries the response was YES. [2024-06-28 00:07:40,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5306 conditions, 932 events. 458/932 cut-off events. For 102385/102385 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5406 event pairs, 82 based on Foata normal form. 10/941 useless extension candidates. Maximal degree in co-relation 5184. Up to 712 conditions per place. [2024-06-28 00:07:40,319 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 54 changer transitions 6/209 dead transitions. [2024-06-28 00:07:40,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 209 transitions, 2156 flow [2024-06-28 00:07:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:07:40,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-28 00:07:40,321 INFO L175 Difference]: Start difference. First operand has 256 places, 194 transitions, 1682 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:07:40,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 209 transitions, 2156 flow [2024-06-28 00:07:40,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 209 transitions, 2061 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:40,602 INFO L231 Difference]: Finished difference. Result has 258 places, 191 transitions, 1679 flow [2024-06-28 00:07:40,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=258, PETRI_TRANSITIONS=191} [2024-06-28 00:07:40,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 00:07:40,603 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 191 transitions, 1679 flow [2024-06-28 00:07:40,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:40,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:40,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:40,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:07:40,604 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -862450083, now seen corresponding path program 7 times [2024-06-28 00:07:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091831949] [2024-06-28 00:07:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091831949] [2024-06-28 00:07:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091831949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403699006] [2024-06-28 00:07:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:42,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:42,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 191 transitions, 1679 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:42,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:42,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:42,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:43,317 INFO L124 PetriNetUnfolderBase]: 445/904 cut-off events. [2024-06-28 00:07:43,318 INFO L125 PetriNetUnfolderBase]: For 75896/75896 co-relation queries the response was YES. [2024-06-28 00:07:43,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 904 events. 445/904 cut-off events. For 75896/75896 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5214 event pairs, 75 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 5097. Up to 747 conditions per place. [2024-06-28 00:07:43,326 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 175 selfloop transitions, 29 changer transitions 0/208 dead transitions. [2024-06-28 00:07:43,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 208 transitions, 2149 flow [2024-06-28 00:07:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 00:07:43,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2024-06-28 00:07:43,327 INFO L175 Difference]: Start difference. First operand has 258 places, 191 transitions, 1679 flow. Second operand 9 states and 130 transitions. [2024-06-28 00:07:43,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 208 transitions, 2149 flow [2024-06-28 00:07:43,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 208 transitions, 2024 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:43,568 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 1644 flow [2024-06-28 00:07:43,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-28 00:07:43,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 00:07:43,569 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 1644 flow [2024-06-28 00:07:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:43,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:07:43,569 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:43,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1992083327, now seen corresponding path program 8 times [2024-06-28 00:07:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017592547] [2024-06-28 00:07:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:45,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017592547] [2024-06-28 00:07:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017592547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738553533] [2024-06-28 00:07:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:45,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:07:45,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 1644 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:07:45,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:45,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:07:45,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:46,108 INFO L124 PetriNetUnfolderBase]: 449/912 cut-off events. [2024-06-28 00:07:46,108 INFO L125 PetriNetUnfolderBase]: For 77938/77938 co-relation queries the response was YES. [2024-06-28 00:07:46,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 912 events. 449/912 cut-off events. For 77938/77938 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5303 event pairs, 85 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 5137. Up to 791 conditions per place. [2024-06-28 00:07:46,116 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 31 changer transitions 1/208 dead transitions. [2024-06-28 00:07:46,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 208 transitions, 2121 flow [2024-06-28 00:07:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:07:46,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:07:46,118 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 1644 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:07:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 208 transitions, 2121 flow [2024-06-28 00:07:46,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 208 transitions, 2045 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:46,448 INFO L231 Difference]: Finished difference. Result has 261 places, 193 transitions, 1668 flow [2024-06-28 00:07:46,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1668, PETRI_PLACES=261, PETRI_TRANSITIONS=193} [2024-06-28 00:07:46,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 00:07:46,449 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 193 transitions, 1668 flow [2024-06-28 00:07:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:07:46,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:46,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:46,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:07:46,449 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:46,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -857866113, now seen corresponding path program 9 times [2024-06-28 00:07:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:46,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358804560] [2024-06-28 00:07:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:46,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358804560] [2024-06-28 00:07:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358804560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:48,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:48,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542713812] [2024-06-28 00:07:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:48,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:48,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:48,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 193 transitions, 1668 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:48,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:48,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:49,088 INFO L124 PetriNetUnfolderBase]: 442/895 cut-off events. [2024-06-28 00:07:49,088 INFO L125 PetriNetUnfolderBase]: For 79640/79640 co-relation queries the response was YES. [2024-06-28 00:07:49,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 895 events. 442/895 cut-off events. For 79640/79640 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5144 event pairs, 80 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 5097. Up to 740 conditions per place. [2024-06-28 00:07:49,096 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-28 00:07:49,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2142 flow [2024-06-28 00:07:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:07:49,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:07:49,097 INFO L175 Difference]: Start difference. First operand has 261 places, 193 transitions, 1668 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:07:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2142 flow [2024-06-28 00:07:49,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 209 transitions, 2058 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:49,323 INFO L231 Difference]: Finished difference. Result has 264 places, 194 transitions, 1684 flow [2024-06-28 00:07:49,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1684, PETRI_PLACES=264, PETRI_TRANSITIONS=194} [2024-06-28 00:07:49,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 00:07:49,324 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 194 transitions, 1684 flow [2024-06-28 00:07:49,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:07:49,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:49,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:49,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:07:49,325 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:49,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash -265688065, now seen corresponding path program 10 times [2024-06-28 00:07:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038357910] [2024-06-28 00:07:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:51,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038357910] [2024-06-28 00:07:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038357910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:51,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:51,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:51,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041483448] [2024-06-28 00:07:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:51,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:51,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:51,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:51,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:51,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 194 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:51,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:51,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:51,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:51,736 INFO L124 PetriNetUnfolderBase]: 454/923 cut-off events. [2024-06-28 00:07:51,736 INFO L125 PetriNetUnfolderBase]: For 103278/103278 co-relation queries the response was YES. [2024-06-28 00:07:51,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 923 events. 454/923 cut-off events. For 103278/103278 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5327 event pairs, 59 based on Foata normal form. 8/930 useless extension candidates. Maximal degree in co-relation 5227. Up to 680 conditions per place. [2024-06-28 00:07:51,745 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 13 changer transitions 30/214 dead transitions. [2024-06-28 00:07:51,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 214 transitions, 2192 flow [2024-06-28 00:07:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:07:51,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:07:51,746 INFO L175 Difference]: Start difference. First operand has 264 places, 194 transitions, 1684 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:07:51,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 214 transitions, 2192 flow [2024-06-28 00:07:52,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 214 transitions, 2106 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:52,055 INFO L231 Difference]: Finished difference. Result has 266 places, 177 transitions, 1483 flow [2024-06-28 00:07:52,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1483, PETRI_PLACES=266, PETRI_TRANSITIONS=177} [2024-06-28 00:07:52,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 00:07:52,056 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 177 transitions, 1483 flow [2024-06-28 00:07:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:07:52,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:52,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:07:52,057 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:52,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 416789151, now seen corresponding path program 1 times [2024-06-28 00:07:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364514573] [2024-06-28 00:07:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364514573] [2024-06-28 00:07:55,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364514573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:55,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:55,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405130541] [2024-06-28 00:07:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:55,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:55,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:55,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:55,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:55,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 177 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:07:55,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:55,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:55,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:56,030 INFO L124 PetriNetUnfolderBase]: 389/795 cut-off events. [2024-06-28 00:07:56,030 INFO L125 PetriNetUnfolderBase]: For 107140/107140 co-relation queries the response was YES. [2024-06-28 00:07:56,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4793 conditions, 795 events. 389/795 cut-off events. For 107140/107140 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4438 event pairs, 57 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 4678. Up to 591 conditions per place. [2024-06-28 00:07:56,040 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 42 changer transitions 9/191 dead transitions. [2024-06-28 00:07:56,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 191 transitions, 1917 flow [2024-06-28 00:07:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:07:56,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-28 00:07:56,041 INFO L175 Difference]: Start difference. First operand has 266 places, 177 transitions, 1483 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:07:56,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 191 transitions, 1917 flow [2024-06-28 00:07:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 191 transitions, 1784 flow, removed 8 selfloop flow, removed 23 redundant places. [2024-06-28 00:07:56,281 INFO L231 Difference]: Finished difference. Result has 240 places, 174 transitions, 1417 flow [2024-06-28 00:07:56,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1417, PETRI_PLACES=240, PETRI_TRANSITIONS=174} [2024-06-28 00:07:56,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 00:07:56,282 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 174 transitions, 1417 flow [2024-06-28 00:07:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:07:56,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:56,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:07:56,283 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:56,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1294109153, now seen corresponding path program 2 times [2024-06-28 00:07:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376962537] [2024-06-28 00:07:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376962537] [2024-06-28 00:07:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376962537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608760518] [2024-06-28 00:07:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:59,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:07:59,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 174 transitions, 1417 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:07:59,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:59,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:07:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:00,234 INFO L124 PetriNetUnfolderBase]: 384/792 cut-off events. [2024-06-28 00:08:00,234 INFO L125 PetriNetUnfolderBase]: For 95032/95032 co-relation queries the response was YES. [2024-06-28 00:08:00,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 792 events. 384/792 cut-off events. For 95032/95032 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4428 event pairs, 59 based on Foata normal form. 8/799 useless extension candidates. Maximal degree in co-relation 4457. Up to 587 conditions per place. [2024-06-28 00:08:00,241 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 44 changer transitions 9/188 dead transitions. [2024-06-28 00:08:00,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 188 transitions, 1843 flow [2024-06-28 00:08:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 00:08:00,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398826979472141 [2024-06-28 00:08:00,248 INFO L175 Difference]: Start difference. First operand has 240 places, 174 transitions, 1417 flow. Second operand 11 states and 150 transitions. [2024-06-28 00:08:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 188 transitions, 1843 flow [2024-06-28 00:08:00,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 188 transitions, 1755 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:00,423 INFO L231 Difference]: Finished difference. Result has 238 places, 171 transitions, 1398 flow [2024-06-28 00:08:00,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1398, PETRI_PLACES=238, PETRI_TRANSITIONS=171} [2024-06-28 00:08:00,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 00:08:00,424 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 171 transitions, 1398 flow [2024-06-28 00:08:00,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:08:00,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:00,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:00,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:08:00,425 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:00,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1466599043, now seen corresponding path program 3 times [2024-06-28 00:08:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081238700] [2024-06-28 00:08:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081238700] [2024-06-28 00:08:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081238700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:03,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:03,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017197202] [2024-06-28 00:08:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:03,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:03,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:03,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:03,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 171 transitions, 1398 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:08:03,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:03,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:03,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:04,379 INFO L124 PetriNetUnfolderBase]: 372/772 cut-off events. [2024-06-28 00:08:04,379 INFO L125 PetriNetUnfolderBase]: For 85499/85499 co-relation queries the response was YES. [2024-06-28 00:08:04,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 772 events. 372/772 cut-off events. For 85499/85499 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4285 event pairs, 58 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 4171. Up to 614 conditions per place. [2024-06-28 00:08:04,385 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 27 changer transitions 9/185 dead transitions. [2024-06-28 00:08:04,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 185 transitions, 1818 flow [2024-06-28 00:08:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:08:04,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 00:08:04,387 INFO L175 Difference]: Start difference. First operand has 238 places, 171 transitions, 1398 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:08:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 185 transitions, 1818 flow [2024-06-28 00:08:04,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 185 transitions, 1726 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:04,570 INFO L231 Difference]: Finished difference. Result has 236 places, 168 transitions, 1339 flow [2024-06-28 00:08:04,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1339, PETRI_PLACES=236, PETRI_TRANSITIONS=168} [2024-06-28 00:08:04,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 00:08:04,573 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 168 transitions, 1339 flow [2024-06-28 00:08:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:08:04,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:04,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:04,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:08:04,574 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:04,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 653261181, now seen corresponding path program 4 times [2024-06-28 00:08:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756948270] [2024-06-28 00:08:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756948270] [2024-06-28 00:08:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756948270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:06,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313558051] [2024-06-28 00:08:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:06,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:06,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 168 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-06-28 00:08:06,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:06,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:06,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:07,303 INFO L124 PetriNetUnfolderBase]: 363/759 cut-off events. [2024-06-28 00:08:07,303 INFO L125 PetriNetUnfolderBase]: For 76322/76322 co-relation queries the response was YES. [2024-06-28 00:08:07,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 759 events. 363/759 cut-off events. For 76322/76322 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4192 event pairs, 54 based on Foata normal form. 6/764 useless extension candidates. Maximal degree in co-relation 4041. Up to 560 conditions per place. [2024-06-28 00:08:07,310 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 40 changer transitions 10/182 dead transitions. [2024-06-28 00:08:07,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 182 transitions, 1739 flow [2024-06-28 00:08:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:08:07,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 00:08:07,311 INFO L175 Difference]: Start difference. First operand has 236 places, 168 transitions, 1339 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:08:07,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 182 transitions, 1739 flow [2024-06-28 00:08:07,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 182 transitions, 1681 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:07,557 INFO L231 Difference]: Finished difference. Result has 234 places, 165 transitions, 1340 flow [2024-06-28 00:08:07,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1340, PETRI_PLACES=234, PETRI_TRANSITIONS=165} [2024-06-28 00:08:07,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 00:08:07,558 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 165 transitions, 1340 flow [2024-06-28 00:08:07,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-06-28 00:08:07,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:07,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:07,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:08:07,558 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:07,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -209217955, now seen corresponding path program 11 times [2024-06-28 00:08:07,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:07,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877783512] [2024-06-28 00:08:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:07,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:09,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:09,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877783512] [2024-06-28 00:08:09,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877783512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:09,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:09,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:09,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611664453] [2024-06-28 00:08:09,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:09,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:08:09,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 165 transitions, 1340 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:08:09,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:09,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:08:09,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:10,369 INFO L124 PetriNetUnfolderBase]: 364/758 cut-off events. [2024-06-28 00:08:10,370 INFO L125 PetriNetUnfolderBase]: For 88889/88889 co-relation queries the response was YES. [2024-06-28 00:08:10,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 758 events. 364/758 cut-off events. For 88889/88889 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4186 event pairs, 85 based on Foata normal form. 10/767 useless extension candidates. Maximal degree in co-relation 4115. Up to 626 conditions per place. [2024-06-28 00:08:10,376 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 21 changer transitions 7/179 dead transitions. [2024-06-28 00:08:10,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 179 transitions, 1776 flow [2024-06-28 00:08:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:08:10,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:08:10,377 INFO L175 Difference]: Start difference. First operand has 234 places, 165 transitions, 1340 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:08:10,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 179 transitions, 1776 flow [2024-06-28 00:08:10,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 179 transitions, 1688 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:10,580 INFO L231 Difference]: Finished difference. Result has 230 places, 162 transitions, 1306 flow [2024-06-28 00:08:10,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1306, PETRI_PLACES=230, PETRI_TRANSITIONS=162} [2024-06-28 00:08:10,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 00:08:10,581 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 162 transitions, 1306 flow [2024-06-28 00:08:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-28 00:08:10,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:10,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:10,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:08:10,581 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:10,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash -120650303, now seen corresponding path program 12 times [2024-06-28 00:08:10,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:10,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683855581] [2024-06-28 00:08:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683855581] [2024-06-28 00:08:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683855581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177055789] [2024-06-28 00:08:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:13,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 162 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:13,650 INFO L124 PetriNetUnfolderBase]: 361/750 cut-off events. [2024-06-28 00:08:13,650 INFO L125 PetriNetUnfolderBase]: For 87201/87201 co-relation queries the response was YES. [2024-06-28 00:08:13,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 750 events. 361/750 cut-off events. For 87201/87201 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4141 event pairs, 62 based on Foata normal form. 10/758 useless extension candidates. Maximal degree in co-relation 4103. Up to 461 conditions per place. [2024-06-28 00:08:13,655 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 69 changer transitions 6/174 dead transitions. [2024-06-28 00:08:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 174 transitions, 1728 flow [2024-06-28 00:08:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:08:13,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-28 00:08:13,656 INFO L175 Difference]: Start difference. First operand has 230 places, 162 transitions, 1306 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:08:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 174 transitions, 1728 flow [2024-06-28 00:08:13,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 174 transitions, 1660 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:13,830 INFO L231 Difference]: Finished difference. Result has 231 places, 160 transitions, 1396 flow [2024-06-28 00:08:13,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=231, PETRI_TRANSITIONS=160} [2024-06-28 00:08:13,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:08:13,830 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 160 transitions, 1396 flow [2024-06-28 00:08:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:13,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:13,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:13,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:08:13,831 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476097, now seen corresponding path program 13 times [2024-06-28 00:08:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030445244] [2024-06-28 00:08:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030445244] [2024-06-28 00:08:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030445244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:15,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:15,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258359593] [2024-06-28 00:08:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:15,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:15,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:15,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 160 transitions, 1396 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:15,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:15,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:15,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,253 INFO L124 PetriNetUnfolderBase]: 360/751 cut-off events. [2024-06-28 00:08:16,253 INFO L125 PetriNetUnfolderBase]: For 89696/89696 co-relation queries the response was YES. [2024-06-28 00:08:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 751 events. 360/751 cut-off events. For 89696/89696 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4143 event pairs, 64 based on Foata normal form. 10/758 useless extension candidates. Maximal degree in co-relation 4223. Up to 565 conditions per place. [2024-06-28 00:08:16,261 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 43 changer transitions 6/172 dead transitions. [2024-06-28 00:08:16,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 172 transitions, 1816 flow [2024-06-28 00:08:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:16,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:16,263 INFO L175 Difference]: Start difference. First operand has 231 places, 160 transitions, 1396 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:16,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 172 transitions, 1816 flow [2024-06-28 00:08:16,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 172 transitions, 1632 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:16,509 INFO L231 Difference]: Finished difference. Result has 231 places, 158 transitions, 1320 flow [2024-06-28 00:08:16,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=231, PETRI_TRANSITIONS=158} [2024-06-28 00:08:16,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:08:16,509 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 158 transitions, 1320 flow [2024-06-28 00:08:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:16,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:16,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:16,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:08:16,510 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:16,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1211586945, now seen corresponding path program 14 times [2024-06-28 00:08:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346748371] [2024-06-28 00:08:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346748371] [2024-06-28 00:08:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346748371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:18,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987202614] [2024-06-28 00:08:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 158 transitions, 1320 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:19,610 INFO L124 PetriNetUnfolderBase]: 347/722 cut-off events. [2024-06-28 00:08:19,610 INFO L125 PetriNetUnfolderBase]: For 64191/64191 co-relation queries the response was YES. [2024-06-28 00:08:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 722 events. 347/722 cut-off events. For 64191/64191 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3941 event pairs, 62 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4063. Up to 473 conditions per place. [2024-06-28 00:08:19,617 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 70 changer transitions 0/167 dead transitions. [2024-06-28 00:08:19,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 167 transitions, 1698 flow [2024-06-28 00:08:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:19,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:19,618 INFO L175 Difference]: Start difference. First operand has 231 places, 158 transitions, 1320 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:19,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 167 transitions, 1698 flow [2024-06-28 00:08:19,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 167 transitions, 1520 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:19,808 INFO L231 Difference]: Finished difference. Result has 231 places, 159 transitions, 1324 flow [2024-06-28 00:08:19,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1324, PETRI_PLACES=231, PETRI_TRANSITIONS=159} [2024-06-28 00:08:19,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:08:19,808 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 159 transitions, 1324 flow [2024-06-28 00:08:19,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:19,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:19,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:08:19,810 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:19,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1211409315, now seen corresponding path program 15 times [2024-06-28 00:08:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530005635] [2024-06-28 00:08:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:22,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:22,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530005635] [2024-06-28 00:08:22,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530005635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:22,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:22,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387812163] [2024-06-28 00:08:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:22,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:22,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 159 transitions, 1324 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:22,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:22,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:22,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:22,890 INFO L124 PetriNetUnfolderBase]: 351/732 cut-off events. [2024-06-28 00:08:22,890 INFO L125 PetriNetUnfolderBase]: For 65794/65794 co-relation queries the response was YES. [2024-06-28 00:08:22,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 732 events. 351/732 cut-off events. For 65794/65794 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3994 event pairs, 60 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 4109. Up to 455 conditions per place. [2024-06-28 00:08:22,896 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 73 changer transitions 0/169 dead transitions. [2024-06-28 00:08:22,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 169 transitions, 1710 flow [2024-06-28 00:08:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:08:22,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-28 00:08:22,898 INFO L175 Difference]: Start difference. First operand has 231 places, 159 transitions, 1324 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:08:22,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 169 transitions, 1710 flow [2024-06-28 00:08:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 169 transitions, 1538 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:23,090 INFO L231 Difference]: Finished difference. Result has 233 places, 160 transitions, 1342 flow [2024-06-28 00:08:23,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1342, PETRI_PLACES=233, PETRI_TRANSITIONS=160} [2024-06-28 00:08:23,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 00:08:23,090 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 160 transitions, 1342 flow [2024-06-28 00:08:23,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:23,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:23,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:23,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:08:23,091 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:23,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:23,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1620574947, now seen corresponding path program 16 times [2024-06-28 00:08:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071028927] [2024-06-28 00:08:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:25,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071028927] [2024-06-28 00:08:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071028927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300413423] [2024-06-28 00:08:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:25,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:25,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:25,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 160 transitions, 1342 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:25,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:25,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:25,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:26,196 INFO L124 PetriNetUnfolderBase]: 355/740 cut-off events. [2024-06-28 00:08:26,196 INFO L125 PetriNetUnfolderBase]: For 67479/67479 co-relation queries the response was YES. [2024-06-28 00:08:26,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 740 events. 355/740 cut-off events. For 67479/67479 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4050 event pairs, 64 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 4175. Up to 589 conditions per place. [2024-06-28 00:08:26,205 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-28 00:08:26,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 169 transitions, 1728 flow [2024-06-28 00:08:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:08:26,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 00:08:26,206 INFO L175 Difference]: Start difference. First operand has 233 places, 160 transitions, 1342 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:08:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 169 transitions, 1728 flow [2024-06-28 00:08:26,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 169 transitions, 1548 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:26,484 INFO L231 Difference]: Finished difference. Result has 235 places, 161 transitions, 1294 flow [2024-06-28 00:08:26,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1294, PETRI_PLACES=235, PETRI_TRANSITIONS=161} [2024-06-28 00:08:26,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 00:08:26,485 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 161 transitions, 1294 flow [2024-06-28 00:08:26,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:26,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:26,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:08:26,486 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:26,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash 551535489, now seen corresponding path program 17 times [2024-06-28 00:08:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751773551] [2024-06-28 00:08:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751773551] [2024-06-28 00:08:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751773551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:29,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336474949] [2024-06-28 00:08:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:29,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:29,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 161 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:29,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:29,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:29,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:30,048 INFO L124 PetriNetUnfolderBase]: 359/748 cut-off events. [2024-06-28 00:08:30,049 INFO L125 PetriNetUnfolderBase]: For 69087/69087 co-relation queries the response was YES. [2024-06-28 00:08:30,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4262 conditions, 748 events. 359/748 cut-off events. For 69087/69087 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4121 event pairs, 64 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4161. Up to 577 conditions per place. [2024-06-28 00:08:30,055 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 45 changer transitions 0/171 dead transitions. [2024-06-28 00:08:30,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 171 transitions, 1688 flow [2024-06-28 00:08:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:08:30,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 00:08:30,056 INFO L175 Difference]: Start difference. First operand has 235 places, 161 transitions, 1294 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:08:30,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 171 transitions, 1688 flow [2024-06-28 00:08:30,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 171 transitions, 1566 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:30,268 INFO L231 Difference]: Finished difference. Result has 237 places, 162 transitions, 1310 flow [2024-06-28 00:08:30,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1310, PETRI_PLACES=237, PETRI_TRANSITIONS=162} [2024-06-28 00:08:30,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-28 00:08:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 162 transitions, 1310 flow [2024-06-28 00:08:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2024-06-28 00:08:30,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:30,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:08:30,269 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:30,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1331852705, now seen corresponding path program 18 times [2024-06-28 00:08:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840315007] [2024-06-28 00:08:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:32,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840315007] [2024-06-28 00:08:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840315007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:32,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:32,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191181279] [2024-06-28 00:08:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:32,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:32,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:32,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 162 transitions, 1310 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:32,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:32,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:32,974 INFO L124 PetriNetUnfolderBase]: 400/835 cut-off events. [2024-06-28 00:08:32,974 INFO L125 PetriNetUnfolderBase]: For 126399/126399 co-relation queries the response was YES. [2024-06-28 00:08:32,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5601 conditions, 835 events. 400/835 cut-off events. For 126399/126399 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4712 event pairs, 83 based on Foata normal form. 8/840 useless extension candidates. Maximal degree in co-relation 5499. Up to 611 conditions per place. [2024-06-28 00:08:32,983 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 29 changer transitions 7/179 dead transitions. [2024-06-28 00:08:32,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 179 transitions, 1996 flow [2024-06-28 00:08:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:08:32,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-28 00:08:32,985 INFO L175 Difference]: Start difference. First operand has 237 places, 162 transitions, 1310 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:08:32,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 179 transitions, 1996 flow [2024-06-28 00:08:33,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 179 transitions, 1868 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:33,498 INFO L231 Difference]: Finished difference. Result has 239 places, 160 transitions, 1231 flow [2024-06-28 00:08:33,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1231, PETRI_PLACES=239, PETRI_TRANSITIONS=160} [2024-06-28 00:08:33,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 00:08:33,498 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 160 transitions, 1231 flow [2024-06-28 00:08:33,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:33,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:33,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:08:33,499 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:33,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1331675075, now seen corresponding path program 19 times [2024-06-28 00:08:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373497561] [2024-06-28 00:08:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:35,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:35,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373497561] [2024-06-28 00:08:35,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373497561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:35,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:35,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624894735] [2024-06-28 00:08:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:35,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:35,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 160 transitions, 1231 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:35,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:35,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:35,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:36,118 INFO L124 PetriNetUnfolderBase]: 379/792 cut-off events. [2024-06-28 00:08:36,118 INFO L125 PetriNetUnfolderBase]: For 101315/101315 co-relation queries the response was YES. [2024-06-28 00:08:36,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5082 conditions, 792 events. 379/792 cut-off events. For 101315/101315 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4427 event pairs, 78 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4979. Up to 668 conditions per place. [2024-06-28 00:08:36,125 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 135 selfloop transitions, 30 changer transitions 0/169 dead transitions. [2024-06-28 00:08:36,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 169 transitions, 1621 flow [2024-06-28 00:08:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:36,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:08:36,126 INFO L175 Difference]: Start difference. First operand has 239 places, 160 transitions, 1231 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:36,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 169 transitions, 1621 flow [2024-06-28 00:08:36,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 169 transitions, 1562 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:36,418 INFO L231 Difference]: Finished difference. Result has 238 places, 161 transitions, 1282 flow [2024-06-28 00:08:36,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1282, PETRI_PLACES=238, PETRI_TRANSITIONS=161} [2024-06-28 00:08:36,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 00:08:36,418 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 161 transitions, 1282 flow [2024-06-28 00:08:36,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:36,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:36,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:08:36,419 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:36,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1336436675, now seen corresponding path program 20 times [2024-06-28 00:08:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040729869] [2024-06-28 00:08:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040729869] [2024-06-28 00:08:38,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040729869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:38,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:38,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870286177] [2024-06-28 00:08:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:38,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:38,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 161 transitions, 1282 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:38,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:38,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:38,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:38,701 INFO L124 PetriNetUnfolderBase]: 384/807 cut-off events. [2024-06-28 00:08:38,702 INFO L125 PetriNetUnfolderBase]: For 112269/112269 co-relation queries the response was YES. [2024-06-28 00:08:38,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4915 conditions, 807 events. 384/807 cut-off events. For 112269/112269 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4518 event pairs, 73 based on Foata normal form. 8/812 useless extension candidates. Maximal degree in co-relation 4813. Up to 649 conditions per place. [2024-06-28 00:08:38,709 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 132 selfloop transitions, 25 changer transitions 12/173 dead transitions. [2024-06-28 00:08:38,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 173 transitions, 1658 flow [2024-06-28 00:08:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:08:38,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-28 00:08:38,710 INFO L175 Difference]: Start difference. First operand has 238 places, 161 transitions, 1282 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:08:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 173 transitions, 1658 flow [2024-06-28 00:08:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 173 transitions, 1558 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:39,044 INFO L231 Difference]: Finished difference. Result has 240 places, 157 transitions, 1173 flow [2024-06-28 00:08:39,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1173, PETRI_PLACES=240, PETRI_TRANSITIONS=157} [2024-06-28 00:08:39,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 00:08:39,045 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 157 transitions, 1173 flow [2024-06-28 00:08:39,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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) [2024-06-28 00:08:39,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:39,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:08:39,045 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:39,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 551134045, now seen corresponding path program 5 times [2024-06-28 00:08:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045827701] [2024-06-28 00:08:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:41,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045827701] [2024-06-28 00:08:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045827701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:41,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:41,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:41,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888691745] [2024-06-28 00:08:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:42,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:08:42,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 157 transitions, 1173 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-06-28 00:08:42,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:42,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:08:42,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:42,764 INFO L124 PetriNetUnfolderBase]: 392/832 cut-off events. [2024-06-28 00:08:42,764 INFO L125 PetriNetUnfolderBase]: For 139208/139208 co-relation queries the response was YES. [2024-06-28 00:08:42,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 832 events. 392/832 cut-off events. For 139208/139208 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4763 event pairs, 108 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 5478. Up to 665 conditions per place. [2024-06-28 00:08:42,774 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 18 changer transitions 7/175 dead transitions. [2024-06-28 00:08:42,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 175 transitions, 1773 flow [2024-06-28 00:08:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 00:08:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-28 00:08:42,776 INFO L175 Difference]: Start difference. First operand has 240 places, 157 transitions, 1173 flow. Second operand 12 states and 151 transitions. [2024-06-28 00:08:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 175 transitions, 1773 flow [2024-06-28 00:08:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 175 transitions, 1610 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:43,329 INFO L231 Difference]: Finished difference. Result has 235 places, 154 transitions, 1038 flow [2024-06-28 00:08:43,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1038, PETRI_PLACES=235, PETRI_TRANSITIONS=154} [2024-06-28 00:08:43,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 00:08:43,330 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 154 transitions, 1038 flow [2024-06-28 00:08:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-06-28 00:08:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:43,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:08:43,331 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:43,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:43,331 INFO L85 PathProgramCache]: Analyzing trace with hash -759062141, now seen corresponding path program 6 times [2024-06-28 00:08:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428637048] [2024-06-28 00:08:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:43,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428637048] [2024-06-28 00:08:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428637048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788937147] [2024-06-28 00:08:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:46,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:46,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:46,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:08:46,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 154 transitions, 1038 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:08:46,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:46,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:08:46,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:47,364 INFO L124 PetriNetUnfolderBase]: 367/779 cut-off events. [2024-06-28 00:08:47,364 INFO L125 PetriNetUnfolderBase]: For 110997/110997 co-relation queries the response was YES. [2024-06-28 00:08:47,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 779 events. 367/779 cut-off events. For 110997/110997 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4345 event pairs, 98 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 4358. Up to 665 conditions per place. [2024-06-28 00:08:47,371 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 16 changer transitions 9/168 dead transitions. [2024-06-28 00:08:47,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 168 transitions, 1424 flow [2024-06-28 00:08:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 00:08:47,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 00:08:47,373 INFO L175 Difference]: Start difference. First operand has 235 places, 154 transitions, 1038 flow. Second operand 12 states and 146 transitions. [2024-06-28 00:08:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 168 transitions, 1424 flow [2024-06-28 00:08:47,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 168 transitions, 1380 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:47,697 INFO L231 Difference]: Finished difference. Result has 232 places, 151 transitions, 1013 flow [2024-06-28 00:08:47,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1013, PETRI_PLACES=232, PETRI_TRANSITIONS=151} [2024-06-28 00:08:47,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-28 00:08:47,697 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 151 transitions, 1013 flow [2024-06-28 00:08:47,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:08:47,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:47,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:47,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:08:47,698 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:47,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 828190345, now seen corresponding path program 7 times [2024-06-28 00:08:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106926964] [2024-06-28 00:08:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:50,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106926964] [2024-06-28 00:08:50,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106926964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017567707] [2024-06-28 00:08:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:50,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:08:50,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 151 transitions, 1013 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:08:50,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:50,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:08:50,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:51,064 INFO L124 PetriNetUnfolderBase]: 358/768 cut-off events. [2024-06-28 00:08:51,064 INFO L125 PetriNetUnfolderBase]: For 98779/98779 co-relation queries the response was YES. [2024-06-28 00:08:51,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 768 events. 358/768 cut-off events. For 98779/98779 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4309 event pairs, 94 based on Foata normal form. 6/773 useless extension candidates. Maximal degree in co-relation 4226. Up to 655 conditions per place. [2024-06-28 00:08:51,070 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 14 changer transitions 10/166 dead transitions. [2024-06-28 00:08:51,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 166 transitions, 1383 flow [2024-06-28 00:08:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-28 00:08:51,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-28 00:08:51,071 INFO L175 Difference]: Start difference. First operand has 232 places, 151 transitions, 1013 flow. Second operand 13 states and 154 transitions. [2024-06-28 00:08:51,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 166 transitions, 1383 flow [2024-06-28 00:08:51,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 166 transitions, 1347 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:51,338 INFO L231 Difference]: Finished difference. Result has 230 places, 148 transitions, 990 flow [2024-06-28 00:08:51,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=990, PETRI_PLACES=230, PETRI_TRANSITIONS=148} [2024-06-28 00:08:51,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 00:08:51,339 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 148 transitions, 990 flow [2024-06-28 00:08:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:08:51,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:51,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:08:51,339 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:51,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1448065919, now seen corresponding path program 8 times [2024-06-28 00:08:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580048548] [2024-06-28 00:08:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580048548] [2024-06-28 00:08:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580048548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:54,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:54,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997043435] [2024-06-28 00:08:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:54,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:54,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:54,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:54,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 148 transitions, 990 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:08:54,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:54,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:54,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:55,370 INFO L124 PetriNetUnfolderBase]: 373/792 cut-off events. [2024-06-28 00:08:55,370 INFO L125 PetriNetUnfolderBase]: For 124281/124281 co-relation queries the response was YES. [2024-06-28 00:08:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 792 events. 373/792 cut-off events. For 124281/124281 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4464 event pairs, 83 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 4993. Up to 515 conditions per place. [2024-06-28 00:08:55,378 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 50 changer transitions 7/164 dead transitions. [2024-06-28 00:08:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 164 transitions, 1550 flow [2024-06-28 00:08:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 00:08:55,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:55,379 INFO L175 Difference]: Start difference. First operand has 230 places, 148 transitions, 990 flow. Second operand 11 states and 154 transitions. [2024-06-28 00:08:55,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 164 transitions, 1550 flow [2024-06-28 00:08:55,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 164 transitions, 1506 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:55,634 INFO L231 Difference]: Finished difference. Result has 224 places, 145 transitions, 1040 flow [2024-06-28 00:08:55,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1040, PETRI_PLACES=224, PETRI_TRANSITIONS=145} [2024-06-28 00:08:55,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 00:08:55,635 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 145 transitions, 1040 flow [2024-06-28 00:08:55,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:08:55,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:55,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:55,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:08:55,635 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1159178241, now seen corresponding path program 9 times [2024-06-28 00:08:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:55,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396775203] [2024-06-28 00:08:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:58,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396775203] [2024-06-28 00:08:58,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396775203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:58,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297930391] [2024-06-28 00:08:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:58,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:58,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:58,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:08:58,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 145 transitions, 1040 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:08:58,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:58,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:08:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:58,937 INFO L124 PetriNetUnfolderBase]: 370/785 cut-off events. [2024-06-28 00:08:58,938 INFO L125 PetriNetUnfolderBase]: For 126037/126037 co-relation queries the response was YES. [2024-06-28 00:08:58,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5069 conditions, 785 events. 370/785 cut-off events. For 126037/126037 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4426 event pairs, 89 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 4975. Up to 612 conditions per place. [2024-06-28 00:08:58,946 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 37 changer transitions 9/157 dead transitions. [2024-06-28 00:08:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 157 transitions, 1394 flow [2024-06-28 00:08:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-28 00:08:58,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-28 00:08:58,948 INFO L175 Difference]: Start difference. First operand has 224 places, 145 transitions, 1040 flow. Second operand 11 states and 149 transitions. [2024-06-28 00:08:58,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 157 transitions, 1394 flow [2024-06-28 00:08:59,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 157 transitions, 1288 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:08:59,301 INFO L231 Difference]: Finished difference. Result has 221 places, 142 transitions, 997 flow [2024-06-28 00:08:59,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=221, PETRI_TRANSITIONS=142} [2024-06-28 00:08:59,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 00:08:59,302 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 142 transitions, 997 flow [2024-06-28 00:08:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:08:59,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:59,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:59,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:08:59,303 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:59,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2028174173, now seen corresponding path program 10 times [2024-06-28 00:08:59,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:59,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532907395] [2024-06-28 00:08:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532907395] [2024-06-28 00:09:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532907395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:01,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:01,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455186408] [2024-06-28 00:09:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:01,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:01,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:01,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:09:01,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 142 transitions, 997 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:09:01,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:01,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:09:01,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:02,467 INFO L124 PetriNetUnfolderBase]: 361/781 cut-off events. [2024-06-28 00:09:02,467 INFO L125 PetriNetUnfolderBase]: For 113397/113397 co-relation queries the response was YES. [2024-06-28 00:09:02,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 781 events. 361/781 cut-off events. For 113397/113397 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4391 event pairs, 104 based on Foata normal form. 6/786 useless extension candidates. Maximal degree in co-relation 4822. Up to 663 conditions per place. [2024-06-28 00:09:02,473 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 129 selfloop transitions, 12 changer transitions 13/158 dead transitions. [2024-06-28 00:09:02,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 158 transitions, 1353 flow [2024-06-28 00:09:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:09:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:09:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-28 00:09:02,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37965260545905705 [2024-06-28 00:09:02,475 INFO L175 Difference]: Start difference. First operand has 221 places, 142 transitions, 997 flow. Second operand 13 states and 153 transitions. [2024-06-28 00:09:02,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 158 transitions, 1353 flow [2024-06-28 00:09:02,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 158 transitions, 1275 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:02,720 INFO L231 Difference]: Finished difference. Result has 221 places, 138 transitions, 923 flow [2024-06-28 00:09:02,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=923, PETRI_PLACES=221, PETRI_TRANSITIONS=138} [2024-06-28 00:09:02,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 00:09:02,721 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 138 transitions, 923 flow [2024-06-28 00:09:02,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-28 00:09:02,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:02,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:02,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:09:02,721 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:02,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1439495039, now seen corresponding path program 11 times [2024-06-28 00:09:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559301495] [2024-06-28 00:09:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:02,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:05,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559301495] [2024-06-28 00:09:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559301495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:05,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:05,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506277774] [2024-06-28 00:09:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:06,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:06,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 138 transitions, 923 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:06,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:06,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:06,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:06,500 INFO L124 PetriNetUnfolderBase]: 354/757 cut-off events. [2024-06-28 00:09:06,500 INFO L125 PetriNetUnfolderBase]: For 117273/117273 co-relation queries the response was YES. [2024-06-28 00:09:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 757 events. 354/757 cut-off events. For 117273/117273 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4198 event pairs, 87 based on Foata normal form. 8/763 useless extension candidates. Maximal degree in co-relation 4699. Up to 514 conditions per place. [2024-06-28 00:09:06,506 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 49 changer transitions 9/150 dead transitions. [2024-06-28 00:09:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 150 transitions, 1261 flow [2024-06-28 00:09:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 00:09:06,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398826979472141 [2024-06-28 00:09:06,508 INFO L175 Difference]: Start difference. First operand has 221 places, 138 transitions, 923 flow. Second operand 11 states and 150 transitions. [2024-06-28 00:09:06,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 150 transitions, 1261 flow [2024-06-28 00:09:06,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 150 transitions, 1225 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:06,766 INFO L231 Difference]: Finished difference. Result has 213 places, 135 transitions, 972 flow [2024-06-28 00:09:06,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=972, PETRI_PLACES=213, PETRI_TRANSITIONS=135} [2024-06-28 00:09:06,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 00:09:06,767 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 135 transitions, 972 flow [2024-06-28 00:09:06,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:06,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:06,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:06,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:09:06,767 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:06,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 36417917, now seen corresponding path program 12 times [2024-06-28 00:09:06,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:06,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129074267] [2024-06-28 00:09:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:06,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:09,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129074267] [2024-06-28 00:09:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129074267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104012152] [2024-06-28 00:09:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:09,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:09,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 135 transitions, 972 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:09,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:09,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:09,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:09,876 INFO L124 PetriNetUnfolderBase]: 375/808 cut-off events. [2024-06-28 00:09:09,877 INFO L125 PetriNetUnfolderBase]: For 137143/137143 co-relation queries the response was YES. [2024-06-28 00:09:09,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 808 events. 375/808 cut-off events. For 137143/137143 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4549 event pairs, 105 based on Foata normal form. 6/811 useless extension candidates. Maximal degree in co-relation 5677. Up to 540 conditions per place. [2024-06-28 00:09:09,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 37 changer transitions 7/151 dead transitions. [2024-06-28 00:09:09,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 151 transitions, 1484 flow [2024-06-28 00:09:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:09:09,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-28 00:09:09,885 INFO L175 Difference]: Start difference. First operand has 213 places, 135 transitions, 972 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:09:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 151 transitions, 1484 flow [2024-06-28 00:09:10,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 151 transitions, 1378 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:10,253 INFO L231 Difference]: Finished difference. Result has 211 places, 132 transitions, 930 flow [2024-06-28 00:09:10,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=930, PETRI_PLACES=211, PETRI_TRANSITIONS=132} [2024-06-28 00:09:10,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 00:09:10,253 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 132 transitions, 930 flow [2024-06-28 00:09:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:10,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:10,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:10,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:09:10,254 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:10,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1211593889, now seen corresponding path program 13 times [2024-06-28 00:09:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058452958] [2024-06-28 00:09:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:10,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:14,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:14,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058452958] [2024-06-28 00:09:14,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058452958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:14,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:14,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:14,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424397926] [2024-06-28 00:09:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:14,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:14,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:14,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:14,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 132 transitions, 930 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:14,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:14,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:14,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:15,145 INFO L124 PetriNetUnfolderBase]: 350/753 cut-off events. [2024-06-28 00:09:15,145 INFO L125 PetriNetUnfolderBase]: For 117277/117277 co-relation queries the response was YES. [2024-06-28 00:09:15,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 753 events. 350/753 cut-off events. For 117277/117277 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4160 event pairs, 97 based on Foata normal form. 8/758 useless extension candidates. Maximal degree in co-relation 4843. Up to 508 conditions per place. [2024-06-28 00:09:15,153 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 50 changer transitions 9/144 dead transitions. [2024-06-28 00:09:15,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 144 transitions, 1254 flow [2024-06-28 00:09:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:09:15,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-28 00:09:15,154 INFO L175 Difference]: Start difference. First operand has 211 places, 132 transitions, 930 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:09:15,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 144 transitions, 1254 flow [2024-06-28 00:09:15,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 144 transitions, 1174 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:15,386 INFO L231 Difference]: Finished difference. Result has 208 places, 129 transitions, 937 flow [2024-06-28 00:09:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=937, PETRI_PLACES=208, PETRI_TRANSITIONS=129} [2024-06-28 00:09:15,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 00:09:15,387 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 129 transitions, 937 flow [2024-06-28 00:09:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:15,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:15,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:09:15,387 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 551720063, now seen corresponding path program 14 times [2024-06-28 00:09:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642457606] [2024-06-28 00:09:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:15,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642457606] [2024-06-28 00:09:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642457606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:18,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:18,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684367961] [2024-06-28 00:09:18,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:18,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:18,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:18,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:18,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 129 transitions, 937 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:18,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:18,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:19,002 INFO L124 PetriNetUnfolderBase]: 323/700 cut-off events. [2024-06-28 00:09:19,003 INFO L125 PetriNetUnfolderBase]: For 91127/91127 co-relation queries the response was YES. [2024-06-28 00:09:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4100 conditions, 700 events. 323/700 cut-off events. For 91127/91127 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3793 event pairs, 85 based on Foata normal form. 8/705 useless extension candidates. Maximal degree in co-relation 4015. Up to 537 conditions per place. [2024-06-28 00:09:19,009 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 33 changer transitions 9/141 dead transitions. [2024-06-28 00:09:19,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 141 transitions, 1253 flow [2024-06-28 00:09:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-28 00:09:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-28 00:09:19,010 INFO L175 Difference]: Start difference. First operand has 208 places, 129 transitions, 937 flow. Second operand 11 states and 149 transitions. [2024-06-28 00:09:19,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 141 transitions, 1253 flow [2024-06-28 00:09:19,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 141 transitions, 1149 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:19,195 INFO L231 Difference]: Finished difference. Result has 205 places, 126 transitions, 884 flow [2024-06-28 00:09:19,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=884, PETRI_PLACES=205, PETRI_TRANSITIONS=126} [2024-06-28 00:09:19,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 00:09:19,196 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 126 transitions, 884 flow [2024-06-28 00:09:19,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:19,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:19,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:19,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:09:19,196 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:19,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash -262806303, now seen corresponding path program 15 times [2024-06-28 00:09:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927241767] [2024-06-28 00:09:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927241767] [2024-06-28 00:09:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927241767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:21,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505171690] [2024-06-28 00:09:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:22,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:22,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 126 transitions, 884 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:22,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:22,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:22,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:22,466 INFO L124 PetriNetUnfolderBase]: 296/647 cut-off events. [2024-06-28 00:09:22,467 INFO L125 PetriNetUnfolderBase]: For 67057/67057 co-relation queries the response was YES. [2024-06-28 00:09:22,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 647 events. 296/647 cut-off events. For 67057/67057 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3437 event pairs, 73 based on Foata normal form. 8/652 useless extension candidates. Maximal degree in co-relation 3203. Up to 502 conditions per place. [2024-06-28 00:09:22,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 27 changer transitions 9/137 dead transitions. [2024-06-28 00:09:22,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 137 transitions, 1176 flow [2024-06-28 00:09:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:09:22,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:09:22,474 INFO L175 Difference]: Start difference. First operand has 205 places, 126 transitions, 884 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:09:22,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 137 transitions, 1176 flow [2024-06-28 00:09:22,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 137 transitions, 1104 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:22,665 INFO L231 Difference]: Finished difference. Result has 203 places, 122 transitions, 835 flow [2024-06-28 00:09:22,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=835, PETRI_PLACES=203, PETRI_TRANSITIONS=122} [2024-06-28 00:09:22,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 00:09:22,666 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 122 transitions, 835 flow [2024-06-28 00:09:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:22,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:22,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:09:22,667 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1196184084, now seen corresponding path program 1 times [2024-06-28 00:09:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130444445] [2024-06-28 00:09:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:24,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:24,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130444445] [2024-06-28 00:09:24,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130444445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:24,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:24,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830368585] [2024-06-28 00:09:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:24,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:24,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:25,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:25,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 122 transitions, 835 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:25,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:25,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:25,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:25,518 INFO L124 PetriNetUnfolderBase]: 287/636 cut-off events. [2024-06-28 00:09:25,518 INFO L125 PetriNetUnfolderBase]: For 60623/60623 co-relation queries the response was YES. [2024-06-28 00:09:25,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 636 events. 287/636 cut-off events. For 60623/60623 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3372 event pairs, 55 based on Foata normal form. 6/641 useless extension candidates. Maximal degree in co-relation 3099. Up to 467 conditions per place. [2024-06-28 00:09:25,523 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 16 changer transitions 20/140 dead transitions. [2024-06-28 00:09:25,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 140 transitions, 1151 flow [2024-06-28 00:09:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:09:25,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 00:09:25,524 INFO L175 Difference]: Start difference. First operand has 203 places, 122 transitions, 835 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:09:25,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 140 transitions, 1151 flow [2024-06-28 00:09:25,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 140 transitions, 1066 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:25,666 INFO L231 Difference]: Finished difference. Result has 199 places, 112 transitions, 738 flow [2024-06-28 00:09:25,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=199, PETRI_TRANSITIONS=112} [2024-06-28 00:09:25,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 00:09:25,667 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 112 transitions, 738 flow [2024-06-28 00:09:25,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:25,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:25,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:09:25,668 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:25,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash 35347310, now seen corresponding path program 2 times [2024-06-28 00:09:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:25,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041791795] [2024-06-28 00:09:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041791795] [2024-06-28 00:09:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041791795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:28,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:28,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:28,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529858872] [2024-06-28 00:09:28,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:28,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:28,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:28,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 112 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:28,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:28,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:28,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:29,363 INFO L124 PetriNetUnfolderBase]: 253/573 cut-off events. [2024-06-28 00:09:29,363 INFO L125 PetriNetUnfolderBase]: For 58920/58920 co-relation queries the response was YES. [2024-06-28 00:09:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 573 events. 253/573 cut-off events. For 58920/58920 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2963 event pairs, 55 based on Foata normal form. 6/578 useless extension candidates. Maximal degree in co-relation 2827. Up to 393 conditions per place. [2024-06-28 00:09:29,367 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 30 changer transitions 11/126 dead transitions. [2024-06-28 00:09:29,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 126 transitions, 1014 flow [2024-06-28 00:09:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:09:29,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 00:09:29,368 INFO L175 Difference]: Start difference. First operand has 199 places, 112 transitions, 738 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:09:29,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 126 transitions, 1014 flow [2024-06-28 00:09:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 126 transitions, 966 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:29,467 INFO L231 Difference]: Finished difference. Result has 186 places, 108 transitions, 735 flow [2024-06-28 00:09:29,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=735, PETRI_PLACES=186, PETRI_TRANSITIONS=108} [2024-06-28 00:09:29,467 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 00:09:29,467 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 108 transitions, 735 flow [2024-06-28 00:09:29,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:29,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:29,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:09:29,468 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2141837550, now seen corresponding path program 3 times [2024-06-28 00:09:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752720688] [2024-06-28 00:09:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752720688] [2024-06-28 00:09:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752720688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:31,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111474038] [2024-06-28 00:09:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:31,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:31,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:31,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 108 transitions, 735 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:31,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:31,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:31,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:32,284 INFO L124 PetriNetUnfolderBase]: 229/525 cut-off events. [2024-06-28 00:09:32,285 INFO L125 PetriNetUnfolderBase]: For 37080/37080 co-relation queries the response was YES. [2024-06-28 00:09:32,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 525 events. 229/525 cut-off events. For 37080/37080 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2673 event pairs, 42 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 2245. Up to 386 conditions per place. [2024-06-28 00:09:32,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 19 changer transitions 14/122 dead transitions. [2024-06-28 00:09:32,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 122 transitions, 1003 flow [2024-06-28 00:09:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:09:32,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:09:32,289 INFO L175 Difference]: Start difference. First operand has 186 places, 108 transitions, 735 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:09:32,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 122 transitions, 1003 flow [2024-06-28 00:09:32,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 122 transitions, 937 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:32,354 INFO L231 Difference]: Finished difference. Result has 182 places, 102 transitions, 683 flow [2024-06-28 00:09:32,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=683, PETRI_PLACES=182, PETRI_TRANSITIONS=102} [2024-06-28 00:09:32,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 00:09:32,355 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 102 transitions, 683 flow [2024-06-28 00:09:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:32,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:32,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:09:32,356 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:32,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2130618642, now seen corresponding path program 4 times [2024-06-28 00:09:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961509124] [2024-06-28 00:09:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961509124] [2024-06-28 00:09:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961509124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896739420] [2024-06-28 00:09:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:34,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:34,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 102 transitions, 683 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:34,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:34,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:34,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:35,174 INFO L124 PetriNetUnfolderBase]: 218/504 cut-off events. [2024-06-28 00:09:35,174 INFO L125 PetriNetUnfolderBase]: For 34782/34782 co-relation queries the response was YES. [2024-06-28 00:09:35,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2212 conditions, 504 events. 218/504 cut-off events. For 34782/34782 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2542 event pairs, 36 based on Foata normal form. 6/509 useless extension candidates. Maximal degree in co-relation 2139. Up to 342 conditions per place. [2024-06-28 00:09:35,177 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 15 changer transitions 20/118 dead transitions. [2024-06-28 00:09:35,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 118 transitions, 947 flow [2024-06-28 00:09:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:09:35,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:09:35,180 INFO L175 Difference]: Start difference. First operand has 182 places, 102 transitions, 683 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:09:35,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 118 transitions, 947 flow [2024-06-28 00:09:35,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 118 transitions, 901 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:35,233 INFO L231 Difference]: Finished difference. Result has 174 places, 93 transitions, 626 flow [2024-06-28 00:09:35,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=626, PETRI_PLACES=174, PETRI_TRANSITIONS=93} [2024-06-28 00:09:35,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 00:09:35,234 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 93 transitions, 626 flow [2024-06-28 00:09:35,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:35,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:35,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:09:35,235 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:35,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1300356392, now seen corresponding path program 5 times [2024-06-28 00:09:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467096344] [2024-06-28 00:09:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467096344] [2024-06-28 00:09:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467096344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232461643] [2024-06-28 00:09:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:37,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:37,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 93 transitions, 626 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:37,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:37,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:37,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:38,287 INFO L124 PetriNetUnfolderBase]: 192/450 cut-off events. [2024-06-28 00:09:38,287 INFO L125 PetriNetUnfolderBase]: For 31492/31492 co-relation queries the response was YES. [2024-06-28 00:09:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 450 events. 192/450 cut-off events. For 31492/31492 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2182 event pairs, 25 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1955. Up to 272 conditions per place. [2024-06-28 00:09:38,290 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 22 changer transitions 13/108 dead transitions. [2024-06-28 00:09:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 108 transitions, 868 flow [2024-06-28 00:09:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:09:38,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:09:38,291 INFO L175 Difference]: Start difference. First operand has 174 places, 93 transitions, 626 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:09:38,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 108 transitions, 868 flow [2024-06-28 00:09:38,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 108 transitions, 822 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:38,331 INFO L231 Difference]: Finished difference. Result has 160 places, 86 transitions, 591 flow [2024-06-28 00:09:38,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=591, PETRI_PLACES=160, PETRI_TRANSITIONS=86} [2024-06-28 00:09:38,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 00:09:38,331 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 86 transitions, 591 flow [2024-06-28 00:09:38,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:38,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:38,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:09:38,332 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:38,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1489651632, now seen corresponding path program 6 times [2024-06-28 00:09:38,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:38,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732312583] [2024-06-28 00:09:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732312583] [2024-06-28 00:09:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732312583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041972854] [2024-06-28 00:09:40,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:40,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:40,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:40,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 86 transitions, 591 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:40,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:40,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:40,998 INFO L124 PetriNetUnfolderBase]: 174/412 cut-off events. [2024-06-28 00:09:40,999 INFO L125 PetriNetUnfolderBase]: For 24516/24516 co-relation queries the response was YES. [2024-06-28 00:09:41,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 412 events. 174/412 cut-off events. For 24516/24516 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1936 event pairs, 34 based on Foata normal form. 6/417 useless extension candidates. Maximal degree in co-relation 1787. Up to 268 conditions per place. [2024-06-28 00:09:41,001 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 18 changer transitions 16/100 dead transitions. [2024-06-28 00:09:41,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 100 transitions, 815 flow [2024-06-28 00:09:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:09:41,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:09:41,002 INFO L175 Difference]: Start difference. First operand has 160 places, 86 transitions, 591 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:09:41,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 100 transitions, 815 flow [2024-06-28 00:09:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 100 transitions, 759 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 00:09:41,039 INFO L231 Difference]: Finished difference. Result has 150 places, 77 transitions, 518 flow [2024-06-28 00:09:41,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=518, PETRI_PLACES=150, PETRI_TRANSITIONS=77} [2024-06-28 00:09:41,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 00:09:41,045 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 77 transitions, 518 flow [2024-06-28 00:09:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:41,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:41,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:09:41,046 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:41,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1626087564, now seen corresponding path program 7 times [2024-06-28 00:09:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:41,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203963067] [2024-06-28 00:09:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203963067] [2024-06-28 00:09:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203963067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:43,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757306959] [2024-06-28 00:09:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 77 transitions, 518 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:43,820 INFO L124 PetriNetUnfolderBase]: 160/381 cut-off events. [2024-06-28 00:09:43,820 INFO L125 PetriNetUnfolderBase]: For 19998/19998 co-relation queries the response was YES. [2024-06-28 00:09:43,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 381 events. 160/381 cut-off events. For 19998/19998 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1744 event pairs, 33 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1622. Up to 258 conditions per place. [2024-06-28 00:09:43,822 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 60 selfloop transitions, 17 changer transitions 12/93 dead transitions. [2024-06-28 00:09:43,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 93 transitions, 734 flow [2024-06-28 00:09:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:09:43,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:09:43,823 INFO L175 Difference]: Start difference. First operand has 150 places, 77 transitions, 518 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:09:43,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 93 transitions, 734 flow [2024-06-28 00:09:43,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 93 transitions, 660 flow, removed 4 selfloop flow, removed 20 redundant places. [2024-06-28 00:09:43,845 INFO L231 Difference]: Finished difference. Result has 135 places, 72 transitions, 458 flow [2024-06-28 00:09:43,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=458, PETRI_PLACES=135, PETRI_TRANSITIONS=72} [2024-06-28 00:09:43,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 00:09:43,846 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 72 transitions, 458 flow [2024-06-28 00:09:43,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:09:43,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:43,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:09:43,847 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:43,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1619535244, now seen corresponding path program 8 times [2024-06-28 00:09:43,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:43,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448843914] [2024-06-28 00:09:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448843914] [2024-06-28 00:09:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448843914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799105282] [2024-06-28 00:09:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:46,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:46,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 72 transitions, 458 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:46,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:46,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:46,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:46,971 INFO L124 PetriNetUnfolderBase]: 149/364 cut-off events. [2024-06-28 00:09:46,972 INFO L125 PetriNetUnfolderBase]: For 17546/17546 co-relation queries the response was YES. [2024-06-28 00:09:46,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 364 events. 149/364 cut-off events. For 17546/17546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1656 event pairs, 30 based on Foata normal form. 6/369 useless extension candidates. Maximal degree in co-relation 1504. Up to 220 conditions per place. [2024-06-28 00:09:46,973 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 3 changer transitions 36/89 dead transitions. [2024-06-28 00:09:46,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 89 transitions, 668 flow [2024-06-28 00:09:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:09:46,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:09:46,974 INFO L175 Difference]: Start difference. First operand has 135 places, 72 transitions, 458 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:09:46,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 89 transitions, 668 flow [2024-06-28 00:09:46,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 89 transitions, 628 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:46,992 INFO L231 Difference]: Finished difference. Result has 131 places, 52 transitions, 310 flow [2024-06-28 00:09:46,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=310, PETRI_PLACES=131, PETRI_TRANSITIONS=52} [2024-06-28 00:09:46,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 00:09:46,992 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 52 transitions, 310 flow [2024-06-28 00:09:46,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:46,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:46,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:46,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:09:46,993 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:46,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:46,993 INFO L85 PathProgramCache]: Analyzing trace with hash -360625552, now seen corresponding path program 9 times [2024-06-28 00:09:46,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:46,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129413609] [2024-06-28 00:09:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:46,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:49,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:49,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129413609] [2024-06-28 00:09:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129413609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:49,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:49,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:49,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980970729] [2024-06-28 00:09:49,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:49,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:49,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:49,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:49,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:09:49,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 52 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-06-28 00:09:49,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:49,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:09:49,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:50,424 INFO L124 PetriNetUnfolderBase]: 113/266 cut-off events. [2024-06-28 00:09:50,425 INFO L125 PetriNetUnfolderBase]: For 15841/15841 co-relation queries the response was YES. [2024-06-28 00:09:50,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 266 events. 113/266 cut-off events. For 15841/15841 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1064 event pairs, 30 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1174. Up to 195 conditions per place. [2024-06-28 00:09:50,426 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 39 selfloop transitions, 7 changer transitions 14/64 dead transitions. [2024-06-28 00:09:50,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 64 transitions, 456 flow [2024-06-28 00:09:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:09:50,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 00:09:50,427 INFO L175 Difference]: Start difference. First operand has 131 places, 52 transitions, 310 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:09:50,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 64 transitions, 456 flow [2024-06-28 00:09:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 64 transitions, 420 flow, removed 11 selfloop flow, removed 18 redundant places. [2024-06-28 00:09:50,439 INFO L231 Difference]: Finished difference. Result has 100 places, 47 transitions, 265 flow [2024-06-28 00:09:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=265, PETRI_PLACES=100, PETRI_TRANSITIONS=47} [2024-06-28 00:09:50,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 00:09:50,439 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 47 transitions, 265 flow [2024-06-28 00:09:50,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2024-06-28 00:09:50,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:50,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:50,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:09:50,440 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -901570178, now seen corresponding path program 10 times [2024-06-28 00:09:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168019911] [2024-06-28 00:09:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:52,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:52,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168019911] [2024-06-28 00:09:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168019911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:52,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:52,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169550298] [2024-06-28 00:09:52,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:52,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:52,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:52,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:53,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:53,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 47 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:53,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:53,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:53,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:53,353 INFO L124 PetriNetUnfolderBase]: 104/243 cut-off events. [2024-06-28 00:09:53,353 INFO L125 PetriNetUnfolderBase]: For 9182/9182 co-relation queries the response was YES. [2024-06-28 00:09:53,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 243 events. 104/243 cut-off events. For 9182/9182 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 936 event pairs, 30 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 997. Up to 143 conditions per place. [2024-06-28 00:09:53,355 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 30 selfloop transitions, 14 changer transitions 11/59 dead transitions. [2024-06-28 00:09:53,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 59 transitions, 401 flow [2024-06-28 00:09:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:09:53,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:09:53,356 INFO L175 Difference]: Start difference. First operand has 100 places, 47 transitions, 265 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:09:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 59 transitions, 401 flow [2024-06-28 00:09:53,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 59 transitions, 377 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:53,366 INFO L231 Difference]: Finished difference. Result has 91 places, 43 transitions, 252 flow [2024-06-28 00:09:53,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=252, PETRI_PLACES=91, PETRI_TRANSITIONS=43} [2024-06-28 00:09:53,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 00:09:53,367 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 43 transitions, 252 flow [2024-06-28 00:09:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:53,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:53,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:09:53,367 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:53,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1601760656, now seen corresponding path program 11 times [2024-06-28 00:09:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266439326] [2024-06-28 00:09:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266439326] [2024-06-28 00:09:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266439326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371767830] [2024-06-28 00:09:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:56,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:56,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:56,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:56,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:09:56,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 43 transitions, 252 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:56,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:09:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:56,820 INFO L124 PetriNetUnfolderBase]: 96/225 cut-off events. [2024-06-28 00:09:56,820 INFO L125 PetriNetUnfolderBase]: For 7058/7058 co-relation queries the response was YES. [2024-06-28 00:09:56,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 225 events. 96/225 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 825 event pairs, 30 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 916. Up to 145 conditions per place. [2024-06-28 00:09:56,821 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 28 selfloop transitions, 12 changer transitions 11/55 dead transitions. [2024-06-28 00:09:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 55 transitions, 380 flow [2024-06-28 00:09:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:09:56,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:09:56,823 INFO L175 Difference]: Start difference. First operand has 91 places, 43 transitions, 252 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:09:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 55 transitions, 380 flow [2024-06-28 00:09:56,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 55 transitions, 344 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:56,832 INFO L231 Difference]: Finished difference. Result has 85 places, 39 transitions, 223 flow [2024-06-28 00:09:56,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=223, PETRI_PLACES=85, PETRI_TRANSITIONS=39} [2024-06-28 00:09:56,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-28 00:09:56,832 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 39 transitions, 223 flow [2024-06-28 00:09:56,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:09:56,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:56,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:56,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:09:56,833 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:56,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1095509588, now seen corresponding path program 12 times [2024-06-28 00:09:56,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:56,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684591049] [2024-06-28 00:09:56,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684591049] [2024-06-28 00:10:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684591049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:00,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:00,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443709940] [2024-06-28 00:10:00,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:00,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:00,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:00,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:10:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 39 transitions, 223 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:00,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:00,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:10:00,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:00,939 INFO L124 PetriNetUnfolderBase]: 88/207 cut-off events. [2024-06-28 00:10:00,940 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-28 00:10:00,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 207 events. 88/207 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 733 event pairs, 30 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 828. Up to 123 conditions per place. [2024-06-28 00:10:00,941 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 25 selfloop transitions, 12 changer transitions 10/51 dead transitions. [2024-06-28 00:10:00,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 51 transitions, 343 flow [2024-06-28 00:10:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:10:00,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:10:00,941 INFO L175 Difference]: Start difference. First operand has 85 places, 39 transitions, 223 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:10:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 51 transitions, 343 flow [2024-06-28 00:10:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 51 transitions, 311 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:00,947 INFO L231 Difference]: Finished difference. Result has 79 places, 36 transitions, 204 flow [2024-06-28 00:10:00,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=79, PETRI_TRANSITIONS=36} [2024-06-28 00:10:00,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 00:10:00,947 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 36 transitions, 204 flow [2024-06-28 00:10:00,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:00,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:00,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:10:00,948 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1101016118, now seen corresponding path program 13 times [2024-06-28 00:10:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:00,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740685604] [2024-06-28 00:10:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740685604] [2024-06-28 00:10:03,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740685604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:03,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:03,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:03,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137484729] [2024-06-28 00:10:03,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:03,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:04,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:10:04,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 36 transitions, 204 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:10:04,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:04,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:10:04,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:04,375 INFO L124 PetriNetUnfolderBase]: 81/194 cut-off events. [2024-06-28 00:10:04,375 INFO L125 PetriNetUnfolderBase]: For 4364/4364 co-relation queries the response was YES. [2024-06-28 00:10:04,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 194 events. 81/194 cut-off events. For 4364/4364 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 28 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 756. Up to 105 conditions per place. [2024-06-28 00:10:04,376 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 21 selfloop transitions, 8 changer transitions 16/49 dead transitions. [2024-06-28 00:10:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 49 transitions, 322 flow [2024-06-28 00:10:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:10:04,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:10:04,377 INFO L175 Difference]: Start difference. First operand has 79 places, 36 transitions, 204 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:10:04,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 49 transitions, 322 flow [2024-06-28 00:10:04,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 292 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:04,383 INFO L231 Difference]: Finished difference. Result has 75 places, 30 transitions, 163 flow [2024-06-28 00:10:04,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=163, PETRI_PLACES=75, PETRI_TRANSITIONS=30} [2024-06-28 00:10:04,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 00:10:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 30 transitions, 163 flow [2024-06-28 00:10:04,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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) [2024-06-28 00:10:04,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:04,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:10:04,405 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1906924690, now seen corresponding path program 14 times [2024-06-28 00:10:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444138139] [2024-06-28 00:10:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444138139] [2024-06-28 00:10:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444138139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:08,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:10:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161257998] [2024-06-28 00:10:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:10:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:10:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:10:08,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:10:08,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 30 transitions, 163 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-06-28 00:10:08,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:08,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:10:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:08,789 INFO L124 PetriNetUnfolderBase]: 68/163 cut-off events. [2024-06-28 00:10:08,790 INFO L125 PetriNetUnfolderBase]: For 3586/3586 co-relation queries the response was YES. [2024-06-28 00:10:08,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 163 events. 68/163 cut-off events. For 3586/3586 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 525 event pairs, 28 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 644. Up to 95 conditions per place. [2024-06-28 00:10:08,791 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 20 selfloop transitions, 8 changer transitions 10/42 dead transitions. [2024-06-28 00:10:08,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 42 transitions, 265 flow [2024-06-28 00:10:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:10:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:10:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:10:08,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:10:08,805 INFO L175 Difference]: Start difference. First operand has 75 places, 30 transitions, 163 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:10:08,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 42 transitions, 265 flow [2024-06-28 00:10:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 42 transitions, 237 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:08,809 INFO L231 Difference]: Finished difference. Result has 64 places, 27 transitions, 140 flow [2024-06-28 00:10:08,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2024-06-28 00:10:08,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 00:10:08,810 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 140 flow [2024-06-28 00:10:08,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2024-06-28 00:10:08,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:08,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:08,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:10:08,811 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:08,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -82268244, now seen corresponding path program 15 times [2024-06-28 00:10:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949125070] [2024-06-28 00:10:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:11,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949125070] [2024-06-28 00:10:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949125070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394914774] [2024-06-28 00:10:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:11,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:10:11,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 140 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:11,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:11,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:10:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:12,170 INFO L124 PetriNetUnfolderBase]: 46/117 cut-off events. [2024-06-28 00:10:12,170 INFO L125 PetriNetUnfolderBase]: For 1358/1358 co-relation queries the response was YES. [2024-06-28 00:10:12,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 117 events. 46/117 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 13 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 387. Up to 44 conditions per place. [2024-06-28 00:10:12,171 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 16 selfloop transitions, 6 changer transitions 14/40 dead transitions. [2024-06-28 00:10:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 40 transitions, 240 flow [2024-06-28 00:10:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:10:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:10:12,172 INFO L175 Difference]: Start difference. First operand has 64 places, 27 transitions, 140 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:10:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 40 transitions, 240 flow [2024-06-28 00:10:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 218 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:12,174 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 109 flow [2024-06-28 00:10:12,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=109, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2024-06-28 00:10:12,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 00:10:12,174 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 109 flow [2024-06-28 00:10:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:12,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:12,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:10:12,175 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:12,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1667746416, now seen corresponding path program 16 times [2024-06-28 00:10:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:12,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902061404] [2024-06-28 00:10:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:15,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902061404] [2024-06-28 00:10:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902061404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:15,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:15,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942014318] [2024-06-28 00:10:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:15,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:10:15,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 109 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:15,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:15,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:10:15,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:15,570 INFO L124 PetriNetUnfolderBase]: 19/58 cut-off events. [2024-06-28 00:10:15,570 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-06-28 00:10:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 58 events. 19/58 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 152. Up to 24 conditions per place. [2024-06-28 00:10:15,570 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-28 00:10:15,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 29 transitions, 147 flow [2024-06-28 00:10:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:10:15,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:10:15,571 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 109 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:10:15,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 29 transitions, 147 flow [2024-06-28 00:10:15,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 117 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 00:10:15,572 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-28 00:10:15,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-28 00:10:15,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 00:10:15,573 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-28 00:10:15,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 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) [2024-06-28 00:10:15,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:10:15,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:10:15,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:10:15,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:10:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:10:15,577 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 16, 15, 10, 9, 8, 7, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:15,583 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:10:15,583 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:10:15,588 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:10:15,588 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:10:15,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:10:15 BasicIcfg [2024-06-28 00:10:15,589 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:10:15,590 INFO L158 Benchmark]: Toolchain (without parser) took 383011.91ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 184.3MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 460.9MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,590 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:10:15,590 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 112.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:10:15,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.33ms. Allocated memory is still 230.7MB. Free memory was 184.3MB in the beginning and 153.6MB in the end (delta: 30.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.89ms. Allocated memory is still 230.7MB. Free memory was 153.6MB in the beginning and 149.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,591 INFO L158 Benchmark]: Boogie Preprocessor took 102.05ms. Allocated memory is still 230.7MB. Free memory was 149.9MB in the beginning and 146.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,591 INFO L158 Benchmark]: RCFGBuilder took 1082.48ms. Allocated memory is still 230.7MB. Free memory was 146.5MB in the beginning and 137.5MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,591 INFO L158 Benchmark]: TraceAbstraction took 381237.02ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 136.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 416.2MB. Max. memory is 16.1GB. [2024-06-28 00:10:15,592 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 0.15ms. Allocated memory is still 115.3MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 112.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.33ms. Allocated memory is still 230.7MB. Free memory was 184.3MB in the beginning and 153.6MB in the end (delta: 30.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.89ms. Allocated memory is still 230.7MB. Free memory was 153.6MB in the beginning and 149.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.05ms. Allocated memory is still 230.7MB. Free memory was 149.9MB in the beginning and 146.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1082.48ms. Allocated memory is still 230.7MB. Free memory was 146.5MB in the beginning and 137.5MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 381237.02ms. Allocated memory was 230.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 136.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 416.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 826]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 827]: 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, 50 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: 381.1s, OverallIterations: 140, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 91.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7090 SdHoareTripleChecker+Valid, 43.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5841 mSDsluCounter, 1899 SdHoareTripleChecker+Invalid, 37.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1428 mSDsCounter, 1620 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52836 IncrementalHoareTripleChecker+Invalid, 54456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1620 mSolverCounterUnsat, 471 mSDtfsCounter, 52836 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1436 GetRequests, 0 SyntacticMatches, 6 SemanticMatches, 1430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 60.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1738occurred in iteration=68, InterpolantAutomatonStates: 1328, 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: 0.2s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 285.0s InterpolantComputationTime, 2283 NumberOfCodeBlocks, 2283 NumberOfCodeBlocksAsserted, 140 NumberOfCheckSat, 2143 ConstructedInterpolants, 0 QuantifiedInterpolants, 129025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 140 InterpolantComputations, 140 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! [2024-06-28 00:10:15,778 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