./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_power.oepc.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/safe000_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:34:47,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:34:47,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:34:47,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:34:47,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:34:47,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:34:47,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:34:47,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:34:47,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:34:47,565 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:34:47,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:34:47,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:34:47,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:34:47,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:34:47,567 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:34:47,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:34:47,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:34:47,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:34:47,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:34:47,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:34:47,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:34:47,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:34:47,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:34:47,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:34:47,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:34:47,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:34:47,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:34:47,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:34:47,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:34:47,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:34:47,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:34:47,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:34:47,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:34:47,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:34:47,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:34:47,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:34:47,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:34:47,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:34:47,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:34:47,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:34:47,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:34:47,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:34:47,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:34:47,574 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:34:47,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:34:47,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:34:47,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:34:47,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:34:47,736 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:34:47,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i [2024-06-27 22:34:48,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:34:49,117 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:34:49,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i [2024-06-27 22:34:49,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2019900da/ad9a349f1a9b4ba680efb6a94f3d2a63/FLAG3c7fea643 [2024-06-27 22:34:49,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2019900da/ad9a349f1a9b4ba680efb6a94f3d2a63 [2024-06-27 22:34:49,151 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:34:49,151 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:34:49,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_power.oepc.yml/witness.yml [2024-06-27 22:34:49,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:34:49,233 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:34:49,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:34:49,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:34:49,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:34:49,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:34:49" (1/2) ... [2024-06-27 22:34:49,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdbfaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:34:49, skipping insertion in model container [2024-06-27 22:34:49,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:34:49" (1/2) ... [2024-06-27 22:34:49,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@457afc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:34:49, skipping insertion in model container [2024-06-27 22:34:49,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:34:49" (2/2) ... [2024-06-27 22:34:49,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdbfaaf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49, skipping insertion in model container [2024-06-27 22:34:49,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:34:49" (2/2) ... [2024-06-27 22:34:49,245 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:34:49,268 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:34:49,270 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:34:49,270 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:34:49,270 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice1 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:34:49,271 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:34:49,271 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-27 22:34:49,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:34:49,418 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i[995,1008] [2024-06-27 22:34:49,565 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:34:49,574 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:34:49,601 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:34:49,793 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:34:49,823 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:34:49,824 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49 WrapperNode [2024-06-27 22:34:49,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:34:49,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:34:49,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:34:49,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:34:49,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,907 INFO L138 Inliner]: procedures = 175, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 178 [2024-06-27 22:34:49,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:34:49,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:34:49,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:34:49,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:34:49,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,938 INFO L175 MemorySlicer]: Split 35 memory accesses to 2 slices as follows [2, 33]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-27 22:34:49,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:34:49,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:34:49,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:34:49,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:34:49,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (1/1) ... [2024-06-27 22:34:49,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:34:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:34:50,035 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) [2024-06-27 22:34:50,055 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 [2024-06-27 22:34:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:34:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:34:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:34:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:34:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:34:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:34:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:34:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:34:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:34:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:34:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:34:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:34:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:34:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:34:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:34:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:34:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:34:50,075 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:34:50,195 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:34:50,196 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:34:50,775 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:34:50,775 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:34:51,052 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:34:51,053 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:34:51,053 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:34:51 BoogieIcfgContainer [2024-06-27 22:34:51,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:34:51,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:34:51,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:34:51,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:34:51,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:34:49" (1/4) ... [2024-06-27 22:34:51,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b84cec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:34:51, skipping insertion in model container [2024-06-27 22:34:51,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:34:49" (2/4) ... [2024-06-27 22:34:51,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b84cec1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:34:51, skipping insertion in model container [2024-06-27 22:34:51,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:34:49" (3/4) ... [2024-06-27 22:34:51,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b84cec1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:34:51, skipping insertion in model container [2024-06-27 22:34:51,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:34:51" (4/4) ... [2024-06-27 22:34:51,063 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.oepc.i [2024-06-27 22:34:51,079 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:34:51,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:34:51,079 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:34:51,170 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:34:51,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:34:51,230 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:34:51,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:34:51,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:34:51,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:34:51,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:34:51,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:34:51,301 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;@2e87534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:34:51,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:34:51,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:34:51,306 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:34:51,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:34:51,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:34:51,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:51,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 791981761, now seen corresponding path program 1 times [2024-06-27 22:34:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934919474] [2024-06-27 22:34:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934919474] [2024-06-27 22:34:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934919474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:53,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:34:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730168777] [2024-06-27 22:34:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:53,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:34:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:34:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:34:53,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:34:53,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 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) [2024-06-27 22:34:53,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:53,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:34:53,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:54,784 INFO L124 PetriNetUnfolderBase]: 4076/6247 cut-off events. [2024-06-27 22:34:54,784 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 22:34:54,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12193 conditions, 6247 events. 4076/6247 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35409 event pairs, 2658 based on Foata normal form. 0/6033 useless extension candidates. Maximal degree in co-relation 12181. Up to 5855 conditions per place. [2024-06-27 22:34:54,811 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 22:34:54,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 233 flow [2024-06-27 22:34:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:34:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:34:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-27 22:34:54,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-27 22:34:54,821 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 87 transitions. [2024-06-27 22:34:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 233 flow [2024-06-27 22:34:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:54,826 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-27 22:34:54,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:34:54,829 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:34:54,829 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-27 22:34:54,829 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) [2024-06-27 22:34:54,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:54,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:54,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:34:54,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:54,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash 885295424, now seen corresponding path program 1 times [2024-06-27 22:34:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:54,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109462895] [2024-06-27 22:34:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:54,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109462895] [2024-06-27 22:34:57,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109462895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:57,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:57,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:34:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592286237] [2024-06-27 22:34:57,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:57,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:34:57,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:57,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:34:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:34:57,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:34:57,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:57,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:57,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:34:57,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:58,743 INFO L124 PetriNetUnfolderBase]: 4069/5955 cut-off events. [2024-06-27 22:34:58,743 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2024-06-27 22:34:58,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13225 conditions, 5955 events. 4069/5955 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32439 event pairs, 1790 based on Foata normal form. 4/5958 useless extension candidates. Maximal degree in co-relation 13213. Up to 5772 conditions per place. [2024-06-27 22:34:58,772 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 68 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-06-27 22:34:58,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 381 flow [2024-06-27 22:34:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:34:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:34:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 22:34:58,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:34:58,776 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 120 transitions. [2024-06-27 22:34:58,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 381 flow [2024-06-27 22:34:58,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:34:58,779 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 181 flow [2024-06-27 22:34:58,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 22:34:58,782 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-27 22:34:58,783 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 181 flow [2024-06-27 22:34:58,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:58,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:58,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:34:58,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1674355507, now seen corresponding path program 1 times [2024-06-27 22:34:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191132765] [2024-06-27 22:34:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191132765] [2024-06-27 22:35:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191132765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:35:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133146473] [2024-06-27 22:35:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:35:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:35:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:35:01,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:35:01,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:01,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:01,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:35:01,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:03,104 INFO L124 PetriNetUnfolderBase]: 4062/5946 cut-off events. [2024-06-27 22:35:03,105 INFO L125 PetriNetUnfolderBase]: For 3004/3004 co-relation queries the response was YES. [2024-06-27 22:35:03,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14756 conditions, 5946 events. 4062/5946 cut-off events. For 3004/3004 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32583 event pairs, 1415 based on Foata normal form. 4/5949 useless extension candidates. Maximal degree in co-relation 14741. Up to 5707 conditions per place. [2024-06-27 22:35:03,133 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 84 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-27 22:35:03,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 511 flow [2024-06-27 22:35:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:35:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:35:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 22:35:03,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:35:03,136 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 181 flow. Second operand 5 states and 150 transitions. [2024-06-27 22:35:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 511 flow [2024-06-27 22:35:03,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:35:03,140 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 233 flow [2024-06-27 22:35:03,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-27 22:35:03,141 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-06-27 22:35:03,141 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 233 flow [2024-06-27 22:35:03,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:03,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:03,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:35:03,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:03,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:03,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1557056302, now seen corresponding path program 1 times [2024-06-27 22:35:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677986440] [2024-06-27 22:35:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677986440] [2024-06-27 22:35:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677986440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:06,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:06,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:06,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103070874] [2024-06-27 22:35:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:06,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:06,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:35:06,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:35:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:08,069 INFO L124 PetriNetUnfolderBase]: 4051/5929 cut-off events. [2024-06-27 22:35:08,069 INFO L125 PetriNetUnfolderBase]: For 4826/4826 co-relation queries the response was YES. [2024-06-27 22:35:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15911 conditions, 5929 events. 4051/5929 cut-off events. For 4826/4826 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32606 event pairs, 1000 based on Foata normal form. 8/5936 useless extension candidates. Maximal degree in co-relation 15893. Up to 5580 conditions per place. [2024-06-27 22:35:08,092 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 96 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-06-27 22:35:08,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 619 flow [2024-06-27 22:35:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 22:35:08,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-06-27 22:35:08,097 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 233 flow. Second operand 6 states and 175 transitions. [2024-06-27 22:35:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 619 flow [2024-06-27 22:35:08,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 595 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:08,105 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 254 flow [2024-06-27 22:35:08,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-27 22:35:08,106 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-27 22:35:08,106 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 254 flow [2024-06-27 22:35:08,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:08,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:08,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:08,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:35:08,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:08,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash -3292587, now seen corresponding path program 1 times [2024-06-27 22:35:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290519856] [2024-06-27 22:35:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:10,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290519856] [2024-06-27 22:35:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290519856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:10,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:35:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878792651] [2024-06-27 22:35:10,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:10,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:35:10,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:10,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:35:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:35:10,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:10,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:10,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:10,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:10,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:11,571 INFO L124 PetriNetUnfolderBase]: 4039/5859 cut-off events. [2024-06-27 22:35:11,572 INFO L125 PetriNetUnfolderBase]: For 7172/7176 co-relation queries the response was YES. [2024-06-27 22:35:11,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 5859 events. 4039/5859 cut-off events. For 7172/7176 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 31748 event pairs, 1158 based on Foata normal form. 10/5868 useless extension candidates. Maximal degree in co-relation 16491. Up to 5614 conditions per place. [2024-06-27 22:35:11,597 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 71 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 22:35:11,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 541 flow [2024-06-27 22:35:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:35:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:35:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:35:11,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:35:11,603 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 254 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:35:11,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 541 flow [2024-06-27 22:35:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 504 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:11,609 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 293 flow [2024-06-27 22:35:11,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 22:35:11,611 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-06-27 22:35:11,611 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 293 flow [2024-06-27 22:35:11,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:11,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:11,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:35:11,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:11,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash -102068032, now seen corresponding path program 1 times [2024-06-27 22:35:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:11,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554348612] [2024-06-27 22:35:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554348612] [2024-06-27 22:35:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554348612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:14,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:14,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551695064] [2024-06-27 22:35:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:14,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:14,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:14,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:14,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:14,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:14,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:16,210 INFO L124 PetriNetUnfolderBase]: 4037/6192 cut-off events. [2024-06-27 22:35:16,211 INFO L125 PetriNetUnfolderBase]: For 8367/8367 co-relation queries the response was YES. [2024-06-27 22:35:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17724 conditions, 6192 events. 4037/6192 cut-off events. For 8367/8367 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35029 event pairs, 1612 based on Foata normal form. 2/6193 useless extension candidates. Maximal degree in co-relation 17700. Up to 5739 conditions per place. [2024-06-27 22:35:16,240 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 80 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-27 22:35:16,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 633 flow [2024-06-27 22:35:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:35:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:35:16,242 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 293 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:35:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 633 flow [2024-06-27 22:35:16,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 618 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:35:16,250 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 405 flow [2024-06-27 22:35:16,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-27 22:35:16,250 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-06-27 22:35:16,251 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 405 flow [2024-06-27 22:35:16,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:16,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:16,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:35:16,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:16,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash 78046560, now seen corresponding path program 1 times [2024-06-27 22:35:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109796634] [2024-06-27 22:35:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:19,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:19,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109796634] [2024-06-27 22:35:19,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109796634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:19,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:19,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826916575] [2024-06-27 22:35:19,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:19,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:19,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:19,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:19,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:19,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:20,941 INFO L124 PetriNetUnfolderBase]: 4032/6185 cut-off events. [2024-06-27 22:35:20,941 INFO L125 PetriNetUnfolderBase]: For 11331/11331 co-relation queries the response was YES. [2024-06-27 22:35:20,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19398 conditions, 6185 events. 4032/6185 cut-off events. For 11331/11331 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34929 event pairs, 1613 based on Foata normal form. 2/6186 useless extension candidates. Maximal degree in co-relation 19368. Up to 5734 conditions per place. [2024-06-27 22:35:20,995 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 81 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-27 22:35:20,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 706 flow [2024-06-27 22:35:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:35:20,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:35:20,997 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 405 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:35:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 706 flow [2024-06-27 22:35:21,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 684 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:35:21,007 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 458 flow [2024-06-27 22:35:21,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-06-27 22:35:21,008 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2024-06-27 22:35:21,008 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 458 flow [2024-06-27 22:35:21,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:21,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:21,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:21,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:35:21,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:21,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2053019463, now seen corresponding path program 1 times [2024-06-27 22:35:21,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224367269] [2024-06-27 22:35:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224367269] [2024-06-27 22:35:24,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224367269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:24,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:24,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:24,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513407793] [2024-06-27 22:35:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:24,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:24,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:24,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:24,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:24,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:27,230 INFO L124 PetriNetUnfolderBase]: 4318/6323 cut-off events. [2024-06-27 22:35:27,231 INFO L125 PetriNetUnfolderBase]: For 13449/13449 co-relation queries the response was YES. [2024-06-27 22:35:27,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20859 conditions, 6323 events. 4318/6323 cut-off events. For 13449/13449 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 34659 event pairs, 1100 based on Foata normal form. 3/6325 useless extension candidates. Maximal degree in co-relation 20825. Up to 5652 conditions per place. [2024-06-27 22:35:27,254 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 143 selfloop transitions, 49 changer transitions 0/198 dead transitions. [2024-06-27 22:35:27,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 198 transitions, 1358 flow [2024-06-27 22:35:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:35:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:35:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-27 22:35:27,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528046421663443 [2024-06-27 22:35:27,257 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 458 flow. Second operand 11 states and 273 transitions. [2024-06-27 22:35:27,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 198 transitions, 1358 flow [2024-06-27 22:35:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 198 transitions, 1335 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:27,268 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 823 flow [2024-06-27 22:35:27,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=823, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-06-27 22:35:27,268 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 22:35:27,268 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 823 flow [2024-06-27 22:35:27,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:27,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:27,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:35:27,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:27,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2052899307, now seen corresponding path program 1 times [2024-06-27 22:35:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570944335] [2024-06-27 22:35:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570944335] [2024-06-27 22:35:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570944335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968286966] [2024-06-27 22:35:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:30,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:30,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 823 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:30,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:30,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:30,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:33,687 INFO L124 PetriNetUnfolderBase]: 5036/7355 cut-off events. [2024-06-27 22:35:33,688 INFO L125 PetriNetUnfolderBase]: For 24657/24665 co-relation queries the response was YES. [2024-06-27 22:35:33,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26812 conditions, 7355 events. 5036/7355 cut-off events. For 24657/24665 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 40455 event pairs, 1113 based on Foata normal form. 13/7367 useless extension candidates. Maximal degree in co-relation 26771. Up to 6359 conditions per place. [2024-06-27 22:35:33,727 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 160 selfloop transitions, 45 changer transitions 0/211 dead transitions. [2024-06-27 22:35:33,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 211 transitions, 1699 flow [2024-06-27 22:35:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 22:35:33,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 22:35:33,731 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 823 flow. Second operand 10 states and 253 transitions. [2024-06-27 22:35:33,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 211 transitions, 1699 flow [2024-06-27 22:35:33,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 211 transitions, 1607 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-27 22:35:33,812 INFO L231 Difference]: Finished difference. Result has 100 places, 129 transitions, 1018 flow [2024-06-27 22:35:33,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1018, PETRI_PLACES=100, PETRI_TRANSITIONS=129} [2024-06-27 22:35:33,814 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 49 predicate places. [2024-06-27 22:35:33,814 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 129 transitions, 1018 flow [2024-06-27 22:35:33,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:33,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:33,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:33,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:35:33,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:33,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2089950779, now seen corresponding path program 2 times [2024-06-27 22:35:33,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263555655] [2024-06-27 22:35:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263555655] [2024-06-27 22:35:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263555655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:37,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:37,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918217661] [2024-06-27 22:35:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:37,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:37,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:37,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 129 transitions, 1018 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:37,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:37,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:37,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:40,088 INFO L124 PetriNetUnfolderBase]: 5242/7685 cut-off events. [2024-06-27 22:35:40,090 INFO L125 PetriNetUnfolderBase]: For 37075/37083 co-relation queries the response was YES. [2024-06-27 22:35:40,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33451 conditions, 7685 events. 5242/7685 cut-off events. For 37075/37083 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 42742 event pairs, 1145 based on Foata normal form. 11/7695 useless extension candidates. Maximal degree in co-relation 33405. Up to 6982 conditions per place. [2024-06-27 22:35:40,137 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 151 selfloop transitions, 38 changer transitions 0/195 dead transitions. [2024-06-27 22:35:40,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 195 transitions, 1743 flow [2024-06-27 22:35:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:35:40,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 22:35:40,139 INFO L175 Difference]: Start difference. First operand has 100 places, 129 transitions, 1018 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:35:40,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 195 transitions, 1743 flow [2024-06-27 22:35:40,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 195 transitions, 1674 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:40,195 INFO L231 Difference]: Finished difference. Result has 105 places, 143 transitions, 1181 flow [2024-06-27 22:35:40,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=105, PETRI_TRANSITIONS=143} [2024-06-27 22:35:40,196 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-27 22:35:40,196 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 143 transitions, 1181 flow [2024-06-27 22:35:40,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:40,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:40,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:40,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:35:40,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:40,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1777450001, now seen corresponding path program 2 times [2024-06-27 22:35:40,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112430907] [2024-06-27 22:35:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:40,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112430907] [2024-06-27 22:35:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112430907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092345998] [2024-06-27 22:35:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:43,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:43,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:43,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 143 transitions, 1181 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:43,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:43,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:43,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:45,718 INFO L124 PetriNetUnfolderBase]: 5304/7757 cut-off events. [2024-06-27 22:35:45,718 INFO L125 PetriNetUnfolderBase]: For 37723/37733 co-relation queries the response was YES. [2024-06-27 22:35:45,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34305 conditions, 7757 events. 5304/7757 cut-off events. For 37723/37733 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 41964 event pairs, 1276 based on Foata normal form. 14/7770 useless extension candidates. Maximal degree in co-relation 34258. Up to 7092 conditions per place. [2024-06-27 22:35:45,762 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 181 selfloop transitions, 46 changer transitions 0/233 dead transitions. [2024-06-27 22:35:45,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 233 transitions, 2253 flow [2024-06-27 22:35:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:35:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:35:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:35:45,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:35:45,764 INFO L175 Difference]: Start difference. First operand has 105 places, 143 transitions, 1181 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:35:45,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 233 transitions, 2253 flow [2024-06-27 22:35:45,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 233 transitions, 2196 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:45,798 INFO L231 Difference]: Finished difference. Result has 111 places, 172 transitions, 1639 flow [2024-06-27 22:35:45,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1639, PETRI_PLACES=111, PETRI_TRANSITIONS=172} [2024-06-27 22:35:45,799 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2024-06-27 22:35:45,799 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 172 transitions, 1639 flow [2024-06-27 22:35:45,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:45,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:45,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:35:45,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 696693281, now seen corresponding path program 3 times [2024-06-27 22:35:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:45,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9284531] [2024-06-27 22:35:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:49,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9284531] [2024-06-27 22:35:49,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9284531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:49,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:49,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:49,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521431583] [2024-06-27 22:35:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:49,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:49,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:49,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 172 transitions, 1639 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:49,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:49,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:51,489 INFO L124 PetriNetUnfolderBase]: 5354/7807 cut-off events. [2024-06-27 22:35:51,490 INFO L125 PetriNetUnfolderBase]: For 46452/46474 co-relation queries the response was YES. [2024-06-27 22:35:51,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36941 conditions, 7807 events. 5354/7807 cut-off events. For 46452/46474 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 42244 event pairs, 1269 based on Foata normal form. 27/7833 useless extension candidates. Maximal degree in co-relation 36889. Up to 6966 conditions per place. [2024-06-27 22:35:51,548 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 178 selfloop transitions, 64 changer transitions 0/248 dead transitions. [2024-06-27 22:35:51,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 248 transitions, 2536 flow [2024-06-27 22:35:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:35:51,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 22:35:51,550 INFO L175 Difference]: Start difference. First operand has 111 places, 172 transitions, 1639 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:35:51,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 248 transitions, 2536 flow [2024-06-27 22:35:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 248 transitions, 2524 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:35:51,608 INFO L231 Difference]: Finished difference. Result has 120 places, 185 transitions, 1909 flow [2024-06-27 22:35:51,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1909, PETRI_PLACES=120, PETRI_TRANSITIONS=185} [2024-06-27 22:35:51,611 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-27 22:35:51,611 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 185 transitions, 1909 flow [2024-06-27 22:35:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:51,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:51,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:51,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:35:51,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:51,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 696693095, now seen corresponding path program 3 times [2024-06-27 22:35:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595938467] [2024-06-27 22:35:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:51,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595938467] [2024-06-27 22:35:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595938467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589883332] [2024-06-27 22:35:54,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:54,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:54,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 185 transitions, 1909 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:54,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:57,515 INFO L124 PetriNetUnfolderBase]: 5564/8181 cut-off events. [2024-06-27 22:35:57,516 INFO L125 PetriNetUnfolderBase]: For 54388/54410 co-relation queries the response was YES. [2024-06-27 22:35:57,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40978 conditions, 8181 events. 5564/8181 cut-off events. For 54388/54410 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 45208 event pairs, 1275 based on Foata normal form. 26/8206 useless extension candidates. Maximal degree in co-relation 40922. Up to 7354 conditions per place. [2024-06-27 22:35:57,570 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 192 selfloop transitions, 76 changer transitions 0/274 dead transitions. [2024-06-27 22:35:57,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 274 transitions, 2928 flow [2024-06-27 22:35:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-27 22:35:57,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 22:35:57,575 INFO L175 Difference]: Start difference. First operand has 120 places, 185 transitions, 1909 flow. Second operand 10 states and 234 transitions. [2024-06-27 22:35:57,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 274 transitions, 2928 flow [2024-06-27 22:35:57,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 274 transitions, 2788 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:57,652 INFO L231 Difference]: Finished difference. Result has 126 places, 209 transitions, 2201 flow [2024-06-27 22:35:57,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2201, PETRI_PLACES=126, PETRI_TRANSITIONS=209} [2024-06-27 22:35:57,654 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 75 predicate places. [2024-06-27 22:35:57,654 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 209 transitions, 2201 flow [2024-06-27 22:35:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:57,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:57,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:57,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:35:57,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:57,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 638486743, now seen corresponding path program 4 times [2024-06-27 22:35:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034568174] [2024-06-27 22:35:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034568174] [2024-06-27 22:36:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034568174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053411431] [2024-06-27 22:36:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:01,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:01,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 209 transitions, 2201 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:01,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:01,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:01,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:04,849 INFO L124 PetriNetUnfolderBase]: 5993/8806 cut-off events. [2024-06-27 22:36:04,850 INFO L125 PetriNetUnfolderBase]: For 63526/63536 co-relation queries the response was YES. [2024-06-27 22:36:04,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46304 conditions, 8806 events. 5993/8806 cut-off events. For 63526/63536 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49652 event pairs, 1130 based on Foata normal form. 13/8818 useless extension candidates. Maximal degree in co-relation 46245. Up to 7760 conditions per place. [2024-06-27 22:36:04,919 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 251 selfloop transitions, 99 changer transitions 0/356 dead transitions. [2024-06-27 22:36:04,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 356 transitions, 3986 flow [2024-06-27 22:36:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 289 transitions. [2024-06-27 22:36:04,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124113475177305 [2024-06-27 22:36:04,936 INFO L175 Difference]: Start difference. First operand has 126 places, 209 transitions, 2201 flow. Second operand 12 states and 289 transitions. [2024-06-27 22:36:04,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 356 transitions, 3986 flow [2024-06-27 22:36:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 356 transitions, 3809 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:05,053 INFO L231 Difference]: Finished difference. Result has 137 places, 258 transitions, 2846 flow [2024-06-27 22:36:05,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2846, PETRI_PLACES=137, PETRI_TRANSITIONS=258} [2024-06-27 22:36:05,054 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-06-27 22:36:05,054 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 258 transitions, 2846 flow [2024-06-27 22:36:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:05,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:05,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:05,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:36:05,055 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:05,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash 638869971, now seen corresponding path program 5 times [2024-06-27 22:36:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:05,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141829957] [2024-06-27 22:36:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:05,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141829957] [2024-06-27 22:36:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141829957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613038839] [2024-06-27 22:36:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:08,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:08,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 258 transitions, 2846 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:08,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:08,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:08,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:11,253 INFO L124 PetriNetUnfolderBase]: 6151/9031 cut-off events. [2024-06-27 22:36:11,254 INFO L125 PetriNetUnfolderBase]: For 69086/69098 co-relation queries the response was YES. [2024-06-27 22:36:11,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49301 conditions, 9031 events. 6151/9031 cut-off events. For 69086/69098 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 51015 event pairs, 1135 based on Foata normal form. 15/9045 useless extension candidates. Maximal degree in co-relation 49236. Up to 8161 conditions per place. [2024-06-27 22:36:11,329 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 262 selfloop transitions, 64 changer transitions 0/332 dead transitions. [2024-06-27 22:36:11,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 332 transitions, 3903 flow [2024-06-27 22:36:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:36:11,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-27 22:36:11,331 INFO L175 Difference]: Start difference. First operand has 137 places, 258 transitions, 2846 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:36:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 332 transitions, 3903 flow [2024-06-27 22:36:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 332 transitions, 3814 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:11,467 INFO L231 Difference]: Finished difference. Result has 141 places, 263 transitions, 2945 flow [2024-06-27 22:36:11,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2639, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2945, PETRI_PLACES=141, PETRI_TRANSITIONS=263} [2024-06-27 22:36:11,468 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-06-27 22:36:11,468 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 263 transitions, 2945 flow [2024-06-27 22:36:11,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:11,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:11,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:36:11,469 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:11,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1368999583, now seen corresponding path program 4 times [2024-06-27 22:36:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625646493] [2024-06-27 22:36:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:13,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625646493] [2024-06-27 22:36:13,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625646493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:13,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:13,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662327696] [2024-06-27 22:36:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:13,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:13,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:13,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 263 transitions, 2945 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:13,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:13,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:13,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:16,320 INFO L124 PetriNetUnfolderBase]: 6679/9732 cut-off events. [2024-06-27 22:36:16,321 INFO L125 PetriNetUnfolderBase]: For 78556/78611 co-relation queries the response was YES. [2024-06-27 22:36:16,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53919 conditions, 9732 events. 6679/9732 cut-off events. For 78556/78611 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 54705 event pairs, 1432 based on Foata normal form. 64/9795 useless extension candidates. Maximal degree in co-relation 53853. Up to 7827 conditions per place. [2024-06-27 22:36:16,385 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 206 selfloop transitions, 111 changer transitions 0/323 dead transitions. [2024-06-27 22:36:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 323 transitions, 4052 flow [2024-06-27 22:36:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:36:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:36:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:36:16,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-27 22:36:16,387 INFO L175 Difference]: Start difference. First operand has 141 places, 263 transitions, 2945 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:36:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 323 transitions, 4052 flow [2024-06-27 22:36:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 323 transitions, 3932 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:16,488 INFO L231 Difference]: Finished difference. Result has 144 places, 284 transitions, 3464 flow [2024-06-27 22:36:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3464, PETRI_PLACES=144, PETRI_TRANSITIONS=284} [2024-06-27 22:36:16,489 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 93 predicate places. [2024-06-27 22:36:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 284 transitions, 3464 flow [2024-06-27 22:36:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:16,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:36:16,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash 673692823, now seen corresponding path program 6 times [2024-06-27 22:36:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981609962] [2024-06-27 22:36:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981609962] [2024-06-27 22:36:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981609962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271526378] [2024-06-27 22:36:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:18,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:18,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:18,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 284 transitions, 3464 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:18,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:18,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:18,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:21,614 INFO L124 PetriNetUnfolderBase]: 6963/10175 cut-off events. [2024-06-27 22:36:21,614 INFO L125 PetriNetUnfolderBase]: For 96817/96879 co-relation queries the response was YES. [2024-06-27 22:36:21,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61477 conditions, 10175 events. 6963/10175 cut-off events. For 96817/96879 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57667 event pairs, 1335 based on Foata normal form. 119/10293 useless extension candidates. Maximal degree in co-relation 61409. Up to 7276 conditions per place. [2024-06-27 22:36:21,700 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 229 selfloop transitions, 128 changer transitions 0/363 dead transitions. [2024-06-27 22:36:21,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 363 transitions, 4834 flow [2024-06-27 22:36:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:36:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:36:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:36:21,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-27 22:36:21,702 INFO L175 Difference]: Start difference. First operand has 144 places, 284 transitions, 3464 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:36:21,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 363 transitions, 4834 flow [2024-06-27 22:36:21,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 4631 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:21,945 INFO L231 Difference]: Finished difference. Result has 148 places, 301 transitions, 3942 flow [2024-06-27 22:36:21,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3942, PETRI_PLACES=148, PETRI_TRANSITIONS=301} [2024-06-27 22:36:21,945 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2024-06-27 22:36:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 301 transitions, 3942 flow [2024-06-27 22:36:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:21,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:21,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:21,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:36:21,946 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:21,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1777458929, now seen corresponding path program 1 times [2024-06-27 22:36:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:21,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615070622] [2024-06-27 22:36:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615070622] [2024-06-27 22:36:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615070622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:25,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:25,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65105474] [2024-06-27 22:36:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:25,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:25,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 301 transitions, 3942 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:25,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:25,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:28,024 INFO L124 PetriNetUnfolderBase]: 6955/10515 cut-off events. [2024-06-27 22:36:28,024 INFO L125 PetriNetUnfolderBase]: For 101711/101711 co-relation queries the response was YES. [2024-06-27 22:36:28,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64205 conditions, 10515 events. 6955/10515 cut-off events. For 101711/101711 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 62254 event pairs, 1803 based on Foata normal form. 4/10518 useless extension candidates. Maximal degree in co-relation 64135. Up to 9668 conditions per place. [2024-06-27 22:36:28,113 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 317 selfloop transitions, 22 changer transitions 0/345 dead transitions. [2024-06-27 22:36:28,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 345 transitions, 4860 flow [2024-06-27 22:36:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 22:36:28,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2024-06-27 22:36:28,116 INFO L175 Difference]: Start difference. First operand has 148 places, 301 transitions, 3942 flow. Second operand 8 states and 174 transitions. [2024-06-27 22:36:28,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 345 transitions, 4860 flow [2024-06-27 22:36:28,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 345 transitions, 4623 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:28,312 INFO L231 Difference]: Finished difference. Result has 150 places, 304 transitions, 3817 flow [2024-06-27 22:36:28,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3705, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3817, PETRI_PLACES=150, PETRI_TRANSITIONS=304} [2024-06-27 22:36:28,313 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-27 22:36:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 304 transitions, 3817 flow [2024-06-27 22:36:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:28,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:28,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:36:28,314 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:28,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -367681614, now seen corresponding path program 1 times [2024-06-27 22:36:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:28,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770274790] [2024-06-27 22:36:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:31,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770274790] [2024-06-27 22:36:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770274790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:31,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121652018] [2024-06-27 22:36:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:31,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:31,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 304 transitions, 3817 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:31,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:31,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:31,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:34,723 INFO L124 PetriNetUnfolderBase]: 7589/11141 cut-off events. [2024-06-27 22:36:34,724 INFO L125 PetriNetUnfolderBase]: For 108498/108533 co-relation queries the response was YES. [2024-06-27 22:36:34,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67906 conditions, 11141 events. 7589/11141 cut-off events. For 108498/108533 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64386 event pairs, 1326 based on Foata normal form. 45/11185 useless extension candidates. Maximal degree in co-relation 67836. Up to 7022 conditions per place. [2024-06-27 22:36:34,819 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 232 selfloop transitions, 205 changer transitions 0/443 dead transitions. [2024-06-27 22:36:34,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 443 transitions, 5844 flow [2024-06-27 22:36:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2024-06-27 22:36:34,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705996131528046 [2024-06-27 22:36:34,820 INFO L175 Difference]: Start difference. First operand has 150 places, 304 transitions, 3817 flow. Second operand 11 states and 295 transitions. [2024-06-27 22:36:34,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 443 transitions, 5844 flow [2024-06-27 22:36:35,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 443 transitions, 5764 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:35,079 INFO L231 Difference]: Finished difference. Result has 158 places, 331 transitions, 4712 flow [2024-06-27 22:36:35,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4712, PETRI_PLACES=158, PETRI_TRANSITIONS=331} [2024-06-27 22:36:35,080 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 107 predicate places. [2024-06-27 22:36:35,080 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 331 transitions, 4712 flow [2024-06-27 22:36:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:35,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:35,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:36:35,080 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:35,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -733622838, now seen corresponding path program 2 times [2024-06-27 22:36:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492528335] [2024-06-27 22:36:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:38,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:38,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492528335] [2024-06-27 22:36:38,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492528335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:38,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:38,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:38,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481218740] [2024-06-27 22:36:38,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:38,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:38,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:38,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:38,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 331 transitions, 4712 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:38,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:38,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:38,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:42,221 INFO L124 PetriNetUnfolderBase]: 7599/11155 cut-off events. [2024-06-27 22:36:42,221 INFO L125 PetriNetUnfolderBase]: For 141580/141608 co-relation queries the response was YES. [2024-06-27 22:36:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74911 conditions, 11155 events. 7599/11155 cut-off events. For 141580/141608 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64424 event pairs, 1382 based on Foata normal form. 32/11186 useless extension candidates. Maximal degree in co-relation 74838. Up to 9808 conditions per place. [2024-06-27 22:36:42,323 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 361 selfloop transitions, 106 changer transitions 0/473 dead transitions. [2024-06-27 22:36:42,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 473 transitions, 6950 flow [2024-06-27 22:36:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-06-27 22:36:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49709864603481624 [2024-06-27 22:36:42,325 INFO L175 Difference]: Start difference. First operand has 158 places, 331 transitions, 4712 flow. Second operand 11 states and 257 transitions. [2024-06-27 22:36:42,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 473 transitions, 6950 flow [2024-06-27 22:36:42,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 473 transitions, 6641 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-27 22:36:42,737 INFO L231 Difference]: Finished difference. Result has 168 places, 370 transitions, 5326 flow [2024-06-27 22:36:42,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4442, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5326, PETRI_PLACES=168, PETRI_TRANSITIONS=370} [2024-06-27 22:36:42,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-27 22:36:42,738 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 370 transitions, 5326 flow [2024-06-27 22:36:42,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:42,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:42,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:42,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:36:42,739 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:42,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1767281752, now seen corresponding path program 1 times [2024-06-27 22:36:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:42,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718577487] [2024-06-27 22:36:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:46,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718577487] [2024-06-27 22:36:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718577487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:46,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:46,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153003558] [2024-06-27 22:36:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:46,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:46,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:46,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:46,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 370 transitions, 5326 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:46,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:46,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:46,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:50,362 INFO L124 PetriNetUnfolderBase]: 7878/11554 cut-off events. [2024-06-27 22:36:50,362 INFO L125 PetriNetUnfolderBase]: For 156245/156257 co-relation queries the response was YES. [2024-06-27 22:36:50,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78482 conditions, 11554 events. 7878/11554 cut-off events. For 156245/156257 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 67333 event pairs, 1130 based on Foata normal form. 13/11566 useless extension candidates. Maximal degree in co-relation 78404. Up to 9197 conditions per place. [2024-06-27 22:36:50,462 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 304 selfloop transitions, 183 changer transitions 0/493 dead transitions. [2024-06-27 22:36:50,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 493 transitions, 7401 flow [2024-06-27 22:36:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-06-27 22:36:50,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 22:36:50,465 INFO L175 Difference]: Start difference. First operand has 168 places, 370 transitions, 5326 flow. Second operand 12 states and 298 transitions. [2024-06-27 22:36:50,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 493 transitions, 7401 flow [2024-06-27 22:36:50,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 493 transitions, 7252 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:50,897 INFO L231 Difference]: Finished difference. Result has 176 places, 376 transitions, 5683 flow [2024-06-27 22:36:50,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5683, PETRI_PLACES=176, PETRI_TRANSITIONS=376} [2024-06-27 22:36:50,898 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-27 22:36:50,898 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 376 transitions, 5683 flow [2024-06-27 22:36:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:50,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:50,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:50,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:36:50,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:50,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash -426873052, now seen corresponding path program 2 times [2024-06-27 22:36:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:50,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693322785] [2024-06-27 22:36:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693322785] [2024-06-27 22:36:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693322785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:54,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278481971] [2024-06-27 22:36:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:54,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:55,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:55,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 376 transitions, 5683 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:55,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:55,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:55,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:58,200 INFO L124 PetriNetUnfolderBase]: 8407/12327 cut-off events. [2024-06-27 22:36:58,200 INFO L125 PetriNetUnfolderBase]: For 176144/176156 co-relation queries the response was YES. [2024-06-27 22:36:58,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87299 conditions, 12327 events. 8407/12327 cut-off events. For 176144/176156 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 72100 event pairs, 1268 based on Foata normal form. 13/12339 useless extension candidates. Maximal degree in co-relation 87219. Up to 10562 conditions per place. [2024-06-27 22:36:58,331 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 375 selfloop transitions, 190 changer transitions 0/571 dead transitions. [2024-06-27 22:36:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 571 transitions, 9107 flow [2024-06-27 22:36:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-27 22:36:58,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-06-27 22:36:58,333 INFO L175 Difference]: Start difference. First operand has 176 places, 376 transitions, 5683 flow. Second operand 11 states and 281 transitions. [2024-06-27 22:36:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 571 transitions, 9107 flow [2024-06-27 22:36:58,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 571 transitions, 8800 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:58,941 INFO L231 Difference]: Finished difference. Result has 184 places, 461 transitions, 7571 flow [2024-06-27 22:36:58,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5459, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7571, PETRI_PLACES=184, PETRI_TRANSITIONS=461} [2024-06-27 22:36:58,942 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 133 predicate places. [2024-06-27 22:36:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 461 transitions, 7571 flow [2024-06-27 22:36:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:36:58,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:58,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:58,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:36:58,943 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:58,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -776148572, now seen corresponding path program 3 times [2024-06-27 22:36:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726149087] [2024-06-27 22:36:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:03,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:03,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726149087] [2024-06-27 22:37:03,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726149087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:03,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:03,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:03,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146175897] [2024-06-27 22:37:03,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:03,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:03,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:03,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 461 transitions, 7571 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:37:03,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:03,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:03,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:07,061 INFO L124 PetriNetUnfolderBase]: 8515/12468 cut-off events. [2024-06-27 22:37:07,061 INFO L125 PetriNetUnfolderBase]: For 198188/198227 co-relation queries the response was YES. [2024-06-27 22:37:07,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92331 conditions, 12468 events. 8515/12468 cut-off events. For 198188/198227 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 73259 event pairs, 1380 based on Foata normal form. 37/12504 useless extension candidates. Maximal degree in co-relation 92245. Up to 11262 conditions per place. [2024-06-27 22:37:07,208 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 420 selfloop transitions, 113 changer transitions 0/539 dead transitions. [2024-06-27 22:37:07,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 539 transitions, 9348 flow [2024-06-27 22:37:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:37:07,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:37:07,210 INFO L175 Difference]: Start difference. First operand has 184 places, 461 transitions, 7571 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:37:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 539 transitions, 9348 flow [2024-06-27 22:37:07,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 539 transitions, 9101 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:37:07,879 INFO L231 Difference]: Finished difference. Result has 189 places, 476 transitions, 7952 flow [2024-06-27 22:37:07,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7952, PETRI_PLACES=189, PETRI_TRANSITIONS=476} [2024-06-27 22:37:07,881 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 138 predicate places. [2024-06-27 22:37:07,881 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 476 transitions, 7952 flow [2024-06-27 22:37:07,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:37:07,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:07,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:07,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:37:07,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:07,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1602244958, now seen corresponding path program 1 times [2024-06-27 22:37:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347185330] [2024-06-27 22:37:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:12,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347185330] [2024-06-27 22:37:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347185330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:12,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:12,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712212748] [2024-06-27 22:37:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:12,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:12,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 476 transitions, 7952 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-27 22:37:12,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:12,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:17,214 INFO L124 PetriNetUnfolderBase]: 8867/13010 cut-off events. [2024-06-27 22:37:17,214 INFO L125 PetriNetUnfolderBase]: For 216122/216161 co-relation queries the response was YES. [2024-06-27 22:37:17,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95633 conditions, 13010 events. 8867/13010 cut-off events. For 216122/216161 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 76772 event pairs, 1385 based on Foata normal form. 49/13058 useless extension candidates. Maximal degree in co-relation 95545. Up to 11099 conditions per place. [2024-06-27 22:37:17,346 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 453 selfloop transitions, 117 changer transitions 0/576 dead transitions. [2024-06-27 22:37:17,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 576 transitions, 9866 flow [2024-06-27 22:37:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 22:37:17,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:37:17,348 INFO L175 Difference]: Start difference. First operand has 189 places, 476 transitions, 7952 flow. Second operand 11 states and 275 transitions. [2024-06-27 22:37:17,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 576 transitions, 9866 flow [2024-06-27 22:37:18,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 576 transitions, 9680 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:18,027 INFO L231 Difference]: Finished difference. Result has 195 places, 492 transitions, 8320 flow [2024-06-27 22:37:18,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7766, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8320, PETRI_PLACES=195, PETRI_TRANSITIONS=492} [2024-06-27 22:37:18,027 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2024-06-27 22:37:18,028 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 492 transitions, 8320 flow [2024-06-27 22:37:18,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-27 22:37:18,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:18,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:37:18,028 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:18,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1495548392, now seen corresponding path program 4 times [2024-06-27 22:37:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772315660] [2024-06-27 22:37:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772315660] [2024-06-27 22:37:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772315660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822003872] [2024-06-27 22:37:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:22,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:22,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:22,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:22,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 492 transitions, 8320 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:37:22,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:22,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:22,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:26,288 INFO L124 PetriNetUnfolderBase]: 8930/13153 cut-off events. [2024-06-27 22:37:26,288 INFO L125 PetriNetUnfolderBase]: For 230290/230318 co-relation queries the response was YES. [2024-06-27 22:37:26,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100257 conditions, 13153 events. 8930/13153 cut-off events. For 230290/230318 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 78282 event pairs, 1384 based on Foata normal form. 34/13186 useless extension candidates. Maximal degree in co-relation 100167. Up to 11676 conditions per place. [2024-06-27 22:37:26,435 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 374 selfloop transitions, 197 changer transitions 0/577 dead transitions. [2024-06-27 22:37:26,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 577 transitions, 10231 flow [2024-06-27 22:37:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-27 22:37:26,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 22:37:26,436 INFO L175 Difference]: Start difference. First operand has 195 places, 492 transitions, 8320 flow. Second operand 10 states and 234 transitions. [2024-06-27 22:37:26,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 577 transitions, 10231 flow [2024-06-27 22:37:27,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 577 transitions, 9973 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:27,445 INFO L231 Difference]: Finished difference. Result has 201 places, 511 transitions, 9031 flow [2024-06-27 22:37:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8066, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9031, PETRI_PLACES=201, PETRI_TRANSITIONS=511} [2024-06-27 22:37:27,445 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 150 predicate places. [2024-06-27 22:37:27,445 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 511 transitions, 9031 flow [2024-06-27 22:37:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:37:27,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:27,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:37:27,446 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:27,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -492584832, now seen corresponding path program 2 times [2024-06-27 22:37:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:27,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322543238] [2024-06-27 22:37:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322543238] [2024-06-27 22:37:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322543238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:32,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:32,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222810409] [2024-06-27 22:37:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:32,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:32,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:32,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 511 transitions, 9031 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-27 22:37:32,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:32,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:32,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:37,082 INFO L124 PetriNetUnfolderBase]: 9334/13685 cut-off events. [2024-06-27 22:37:37,082 INFO L125 PetriNetUnfolderBase]: For 253561/253589 co-relation queries the response was YES. [2024-06-27 22:37:37,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105058 conditions, 13685 events. 9334/13685 cut-off events. For 253561/253589 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 81032 event pairs, 1393 based on Foata normal form. 46/13730 useless extension candidates. Maximal degree in co-relation 104965. Up to 12019 conditions per place. [2024-06-27 22:37:37,256 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 494 selfloop transitions, 107 changer transitions 0/607 dead transitions. [2024-06-27 22:37:37,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 607 transitions, 11117 flow [2024-06-27 22:37:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 22:37:37,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:37:37,263 INFO L175 Difference]: Start difference. First operand has 201 places, 511 transitions, 9031 flow. Second operand 11 states and 264 transitions. [2024-06-27 22:37:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 607 transitions, 11117 flow [2024-06-27 22:37:38,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 607 transitions, 10752 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:38,207 INFO L231 Difference]: Finished difference. Result has 206 places, 530 transitions, 9317 flow [2024-06-27 22:37:38,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8666, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9317, PETRI_PLACES=206, PETRI_TRANSITIONS=530} [2024-06-27 22:37:38,208 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 155 predicate places. [2024-06-27 22:37:38,208 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 530 transitions, 9317 flow [2024-06-27 22:37:38,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-27 22:37:38,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:38,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:37:38,209 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:38,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -256409472, now seen corresponding path program 3 times [2024-06-27 22:37:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:38,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943694848] [2024-06-27 22:37:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943694848] [2024-06-27 22:37:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943694848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:42,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5237766] [2024-06-27 22:37:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:42,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:43,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:43,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 530 transitions, 9317 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:43,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:43,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:43,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:47,754 INFO L124 PetriNetUnfolderBase]: 9406/13843 cut-off events. [2024-06-27 22:37:47,754 INFO L125 PetriNetUnfolderBase]: For 269068/269096 co-relation queries the response was YES. [2024-06-27 22:37:47,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107861 conditions, 13843 events. 9406/13843 cut-off events. For 269068/269096 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 82489 event pairs, 1457 based on Foata normal form. 32/13874 useless extension candidates. Maximal degree in co-relation 107766. Up to 12688 conditions per place. [2024-06-27 22:37:47,938 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 521 selfloop transitions, 96 changer transitions 0/623 dead transitions. [2024-06-27 22:37:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 623 transitions, 11477 flow [2024-06-27 22:37:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:37:47,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-27 22:37:47,940 INFO L175 Difference]: Start difference. First operand has 206 places, 530 transitions, 9317 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:37:47,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 623 transitions, 11477 flow [2024-06-27 22:37:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 623 transitions, 11246 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 22:37:48,870 INFO L231 Difference]: Finished difference. Result has 212 places, 558 transitions, 9877 flow [2024-06-27 22:37:48,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9100, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9877, PETRI_PLACES=212, PETRI_TRANSITIONS=558} [2024-06-27 22:37:48,871 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2024-06-27 22:37:48,871 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 558 transitions, 9877 flow [2024-06-27 22:37:48,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:48,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:48,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:48,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:37:48,872 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:48,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash -256112802, now seen corresponding path program 4 times [2024-06-27 22:37:48,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:48,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026700298] [2024-06-27 22:37:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:48,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:53,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026700298] [2024-06-27 22:37:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026700298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:53,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:53,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:53,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093160573] [2024-06-27 22:37:53,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:53,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:53,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:53,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 558 transitions, 9877 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:53,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:53,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:53,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:57,834 INFO L124 PetriNetUnfolderBase]: 9487/13942 cut-off events. [2024-06-27 22:37:57,834 INFO L125 PetriNetUnfolderBase]: For 292061/292089 co-relation queries the response was YES. [2024-06-27 22:37:57,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111053 conditions, 13942 events. 9487/13942 cut-off events. For 292061/292089 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 82758 event pairs, 1348 based on Foata normal form. 32/13973 useless extension candidates. Maximal degree in co-relation 110954. Up to 12621 conditions per place. [2024-06-27 22:37:57,999 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 528 selfloop transitions, 109 changer transitions 0/643 dead transitions. [2024-06-27 22:37:57,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 643 transitions, 12068 flow [2024-06-27 22:37:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 22:37:58,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 22:37:58,010 INFO L175 Difference]: Start difference. First operand has 212 places, 558 transitions, 9877 flow. Second operand 9 states and 211 transitions. [2024-06-27 22:37:58,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 643 transitions, 12068 flow [2024-06-27 22:37:59,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 643 transitions, 11811 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:59,040 INFO L231 Difference]: Finished difference. Result has 218 places, 576 transitions, 10267 flow [2024-06-27 22:37:59,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9620, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10267, PETRI_PLACES=218, PETRI_TRANSITIONS=576} [2024-06-27 22:37:59,041 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 167 predicate places. [2024-06-27 22:37:59,041 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 576 transitions, 10267 flow [2024-06-27 22:37:59,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:59,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:59,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:37:59,042 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:59,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:59,042 INFO L85 PathProgramCache]: Analyzing trace with hash -597355914, now seen corresponding path program 5 times [2024-06-27 22:37:59,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:59,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992007565] [2024-06-27 22:37:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:59,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:03,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992007565] [2024-06-27 22:38:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992007565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:38:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847223816] [2024-06-27 22:38:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:03,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:38:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:38:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:38:03,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:03,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 576 transitions, 10267 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:03,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:03,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:03,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:08,996 INFO L124 PetriNetUnfolderBase]: 9929/14600 cut-off events. [2024-06-27 22:38:08,996 INFO L125 PetriNetUnfolderBase]: For 335573/335589 co-relation queries the response was YES. [2024-06-27 22:38:09,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118758 conditions, 14600 events. 9929/14600 cut-off events. For 335573/335589 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 87890 event pairs, 965 based on Foata normal form. 22/14621 useless extension candidates. Maximal degree in co-relation 118657. Up to 12047 conditions per place. [2024-06-27 22:38:09,208 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 561 selfloop transitions, 177 changer transitions 0/744 dead transitions. [2024-06-27 22:38:09,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 744 transitions, 14213 flow [2024-06-27 22:38:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-27 22:38:09,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-06-27 22:38:09,210 INFO L175 Difference]: Start difference. First operand has 218 places, 576 transitions, 10267 flow. Second operand 11 states and 281 transitions. [2024-06-27 22:38:09,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 744 transitions, 14213 flow [2024-06-27 22:38:10,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 744 transitions, 13878 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-27 22:38:10,566 INFO L231 Difference]: Finished difference. Result has 228 places, 644 transitions, 12165 flow [2024-06-27 22:38:10,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9943, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12165, PETRI_PLACES=228, PETRI_TRANSITIONS=644} [2024-06-27 22:38:10,578 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 177 predicate places. [2024-06-27 22:38:10,578 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 644 transitions, 12165 flow [2024-06-27 22:38:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:10,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:10,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:10,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:38:10,579 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:10,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash 826597094, now seen corresponding path program 6 times [2024-06-27 22:38:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:10,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187581348] [2024-06-27 22:38:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:15,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:15,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187581348] [2024-06-27 22:38:15,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187581348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:15,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:38:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068722319] [2024-06-27 22:38:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:38:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:38:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:38:15,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:15,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 644 transitions, 12165 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:15,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:15,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:19,945 INFO L124 PetriNetUnfolderBase]: 10237/15088 cut-off events. [2024-06-27 22:38:19,945 INFO L125 PetriNetUnfolderBase]: For 382523/382539 co-relation queries the response was YES. [2024-06-27 22:38:20,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126714 conditions, 15088 events. 10237/15088 cut-off events. For 382523/382539 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 91921 event pairs, 1448 based on Foata normal form. 28/15115 useless extension candidates. Maximal degree in co-relation 126608. Up to 13476 conditions per place. [2024-06-27 22:38:20,157 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 639 selfloop transitions, 100 changer transitions 0/745 dead transitions. [2024-06-27 22:38:20,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 745 transitions, 14992 flow [2024-06-27 22:38:20,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:38:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:38:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:38:20,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 22:38:20,159 INFO L175 Difference]: Start difference. First operand has 228 places, 644 transitions, 12165 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:38:20,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 745 transitions, 14992 flow [2024-06-27 22:38:21,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 745 transitions, 14559 flow, removed 154 selfloop flow, removed 5 redundant places. [2024-06-27 22:38:21,907 INFO L231 Difference]: Finished difference. Result has 232 places, 656 transitions, 12268 flow [2024-06-27 22:38:21,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11796, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12268, PETRI_PLACES=232, PETRI_TRANSITIONS=656} [2024-06-27 22:38:21,908 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 181 predicate places. [2024-06-27 22:38:21,908 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 656 transitions, 12268 flow [2024-06-27 22:38:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:21,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:21,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:21,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:38:21,909 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:21,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 255697466, now seen corresponding path program 7 times [2024-06-27 22:38:21,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000151151] [2024-06-27 22:38:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:21,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000151151] [2024-06-27 22:38:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000151151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:26,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:38:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576612186] [2024-06-27 22:38:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:38:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:38:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:38:26,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:26,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 656 transitions, 12268 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:26,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:26,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:26,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:32,032 INFO L124 PetriNetUnfolderBase]: 10605/15644 cut-off events. [2024-06-27 22:38:32,032 INFO L125 PetriNetUnfolderBase]: For 375037/375053 co-relation queries the response was YES. [2024-06-27 22:38:32,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130011 conditions, 15644 events. 10605/15644 cut-off events. For 375037/375053 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 96057 event pairs, 1396 based on Foata normal form. 22/15665 useless extension candidates. Maximal degree in co-relation 129903. Up to 13926 conditions per place. [2024-06-27 22:38:32,236 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 657 selfloop transitions, 136 changer transitions 0/799 dead transitions. [2024-06-27 22:38:32,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 799 transitions, 15652 flow [2024-06-27 22:38:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-27 22:38:32,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-06-27 22:38:32,238 INFO L175 Difference]: Start difference. First operand has 232 places, 656 transitions, 12268 flow. Second operand 11 states and 281 transitions. [2024-06-27 22:38:32,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 799 transitions, 15652 flow [2024-06-27 22:38:33,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 799 transitions, 15364 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:33,736 INFO L231 Difference]: Finished difference. Result has 239 places, 697 transitions, 13284 flow [2024-06-27 22:38:33,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12016, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13284, PETRI_PLACES=239, PETRI_TRANSITIONS=697} [2024-06-27 22:38:33,737 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 188 predicate places. [2024-06-27 22:38:33,738 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 697 transitions, 13284 flow [2024-06-27 22:38:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:33,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:33,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:38:33,738 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 373785146, now seen corresponding path program 8 times [2024-06-27 22:38:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066879975] [2024-06-27 22:38:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066879975] [2024-06-27 22:38:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066879975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:38:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320387008] [2024-06-27 22:38:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:38:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:38:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:38:37,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:37,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 697 transitions, 13284 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 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) [2024-06-27 22:38:37,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:37,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:37,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:43,479 INFO L124 PetriNetUnfolderBase]: 11987/17780 cut-off events. [2024-06-27 22:38:43,479 INFO L125 PetriNetUnfolderBase]: For 508070/508098 co-relation queries the response was YES. [2024-06-27 22:38:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146503 conditions, 17780 events. 11987/17780 cut-off events. For 508070/508098 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 111586 event pairs, 1747 based on Foata normal form. 120/17899 useless extension candidates. Maximal degree in co-relation 146391. Up to 11742 conditions per place. [2024-06-27 22:38:43,740 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 559 selfloop transitions, 250 changer transitions 0/815 dead transitions. [2024-06-27 22:38:43,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 815 transitions, 16383 flow [2024-06-27 22:38:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:38:43,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 22:38:43,745 INFO L175 Difference]: Start difference. First operand has 239 places, 697 transitions, 13284 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:38:43,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 815 transitions, 16383 flow