./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006.opt.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/mix006.opt.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/mix006.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006.opt.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 22:04:46,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:04:46,946 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:04:46,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:04:46,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:04:46,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:04:46,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:04:46,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:04:46,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:04:46,966 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:04:46,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:04:46,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:04:46,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:04:46,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:04:46,968 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:04:46,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:04:46,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:04:46,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:04:46,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:04:46,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:04:46,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:04:46,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:04:46,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:04:46,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:04:46,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:04:46,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:04:46,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:04:46,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:04:46,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:04:46,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:04:46,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:04:46,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:04:46,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:04:46,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:04:46,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:04:46,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:04:46,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:04:46,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:04:46,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:04:46,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:04:46,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:04:46,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:04:46,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:04:46,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:04:47,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:04:47,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:04:47,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:04:47,169 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:04:47,169 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:04:47,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006.opt.i [2024-06-27 22:04:48,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:04:48,491 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:04:48,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006.opt.i [2024-06-27 22:04:48,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a818e9a/97e035305756457490c53fabb5e1ac88/FLAGe6775fb48 [2024-06-27 22:04:48,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a818e9a/97e035305756457490c53fabb5e1ac88 [2024-06-27 22:04:48,523 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:04:48,527 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:04:48,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006.opt.yml/witness.yml [2024-06-27 22:04:48,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:04:48,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:04:48,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:04:48,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:04:48,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:04:48,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:04:48" (1/2) ... [2024-06-27 22:04:48,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c8fb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:04:48, skipping insertion in model container [2024-06-27 22:04:48,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:04:48" (1/2) ... [2024-06-27 22:04:48,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ee57678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:04:48, skipping insertion in model container [2024-06-27 22:04:48,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:48" (2/2) ... [2024-06-27 22:04:48,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c8fb2b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:48, skipping insertion in model container [2024-06-27 22:04:48,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:48" (2/2) ... [2024-06-27 22:04:48,623 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:04:48,648 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:04:48,650 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:04:48,650 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:04:48,650 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:04:48,651 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:04:48,651 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-27 22:04:48,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:04:48,849 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/mix006.opt.i[944,957] [2024-06-27 22:04:49,032 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:04:49,040 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:04:49,070 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/mix006.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:04:49,153 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:04:49,187 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:04:49,188 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:49 WrapperNode [2024-06-27 22:04:49,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:04:49,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:04:49,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:04:49,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:04:49,195 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,212 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,254 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-06-27 22:04:49,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:04:49,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:04:49,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:04:49,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:04:49,264 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,265 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,269 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,298 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:04:49,298 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,299 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,306 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,308 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,311 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,313 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:04:49,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:04:49,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:04:49,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:04:49,329 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 10:04:49" (1/1) ... [2024-06-27 22:04:49,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:04:49,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:04:49,373 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 22:04:49,387 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 22:04:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:04:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:04:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:04:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:04:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:04:49,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:04:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:04:49,413 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 22:04:49,547 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:04:49,551 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:04:49,923 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:04:49,923 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:04:50,113 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:04:50,113 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:04:50,114 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:04:50 BoogieIcfgContainer [2024-06-27 22:04:50,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:04:50,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:04:50,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:04:50,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:04:50,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:04:48" (1/4) ... [2024-06-27 22:04:50,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d74e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:48" (2/4) ... [2024-06-27 22:04:50,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d74e6b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,132 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 10:04:49" (3/4) ... [2024-06-27 22:04:50,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d74e6b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:04:50" (4/4) ... [2024-06-27 22:04:50,133 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006.opt.i [2024-06-27 22:04:50,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:04:50,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:04:50,146 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:04:50,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:04:50,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:04:50,222 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:04:50,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:04:50,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:04:50,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:04:50,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:04:50,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:04:50,239 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;@198083d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:04:50,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:04:50,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:04:50,242 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:04:50,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:04:50,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:50,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:04:50,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:50,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash 381776835, now seen corresponding path program 1 times [2024-06-27 22:04:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535226128] [2024-06-27 22:04:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:51,256 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 22:04:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535226128] [2024-06-27 22:04:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535226128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:04:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927278543] [2024-06-27 22:04:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:51,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:04:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:04:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:04:51,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 22:04:51,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:04:51,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:51,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 22:04:51,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:52,016 INFO L124 PetriNetUnfolderBase]: 2986/5037 cut-off events. [2024-06-27 22:04:52,016 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:04:52,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9426 conditions, 5037 events. 2986/5037 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33454 event pairs, 2435 based on Foata normal form. 150/4781 useless extension candidates. Maximal degree in co-relation 9414. Up to 4310 conditions per place. [2024-06-27 22:04:52,049 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 40 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:04:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 219 flow [2024-06-27 22:04:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:04:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:04:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-27 22:04:52,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-06-27 22:04:52,060 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 101 transitions. [2024-06-27 22:04:52,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 219 flow [2024-06-27 22:04:52,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:52,067 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:04:52,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:04:52,072 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:04:52,072 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:04:52,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:04:52,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:52,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:04:52,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:52,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1815338914, now seen corresponding path program 1 times [2024-06-27 22:04:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:52,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286348128] [2024-06-27 22:04:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:52,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:52,719 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 22:04:52,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286348128] [2024-06-27 22:04:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286348128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:52,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:04:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78439877] [2024-06-27 22:04:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:04:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:04:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:04:52,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:04:52,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:52,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:52,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:04:52,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:53,339 INFO L124 PetriNetUnfolderBase]: 3390/5463 cut-off events. [2024-06-27 22:04:53,340 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-06-27 22:04:53,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11580 conditions, 5463 events. 3390/5463 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 34193 event pairs, 1983 based on Foata normal form. 3/5136 useless extension candidates. Maximal degree in co-relation 11568. Up to 4856 conditions per place. [2024-06-27 22:04:53,364 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 52 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-06-27 22:04:53,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 306 flow [2024-06-27 22:04:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:04:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:04:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 22:04:53,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6614583333333334 [2024-06-27 22:04:53,366 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 127 transitions. [2024-06-27 22:04:53,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 306 flow [2024-06-27 22:04:53,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:04:53,368 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-06-27 22:04:53,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 22:04:53,369 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 22:04:53,369 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-06-27 22:04:53,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:53,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:53,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:53,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:04:53,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:53,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash 440932192, now seen corresponding path program 1 times [2024-06-27 22:04:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:53,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327937702] [2024-06-27 22:04:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:53,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:54,057 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 22:04:54,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:54,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327937702] [2024-06-27 22:04:54,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327937702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:54,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:04:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756825852] [2024-06-27 22:04:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:04:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:04:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:04:54,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:04:54,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:54,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:54,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:04:54,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:54,744 INFO L124 PetriNetUnfolderBase]: 4075/6766 cut-off events. [2024-06-27 22:04:54,744 INFO L125 PetriNetUnfolderBase]: For 2570/2570 co-relation queries the response was YES. [2024-06-27 22:04:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15266 conditions, 6766 events. 4075/6766 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 45256 event pairs, 2368 based on Foata normal form. 5/6362 useless extension candidates. Maximal degree in co-relation 15252. Up to 5711 conditions per place. [2024-06-27 22:04:54,777 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 70 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-27 22:04:54,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 480 flow [2024-06-27 22:04:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:04:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:04:54,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-27 22:04:54,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-06-27 22:04:54,780 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 5 states and 163 transitions. [2024-06-27 22:04:54,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 480 flow [2024-06-27 22:04:54,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 466 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:04:54,783 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 269 flow [2024-06-27 22:04:54,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 22:04:54,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 22:04:54,784 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 269 flow [2024-06-27 22:04:54,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:54,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:04:54,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:54,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash 251846883, now seen corresponding path program 1 times [2024-06-27 22:04:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264989885] [2024-06-27 22:04:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:55,478 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 22:04:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264989885] [2024-06-27 22:04:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264989885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:55,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:04:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515059410] [2024-06-27 22:04:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:04:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:04:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:04:55,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:04:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:04:55,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:55,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:04:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:56,216 INFO L124 PetriNetUnfolderBase]: 4074/6739 cut-off events. [2024-06-27 22:04:56,216 INFO L125 PetriNetUnfolderBase]: For 8654/8659 co-relation queries the response was YES. [2024-06-27 22:04:56,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17854 conditions, 6739 events. 4074/6739 cut-off events. For 8654/8659 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 44900 event pairs, 1874 based on Foata normal form. 39/6544 useless extension candidates. Maximal degree in co-relation 17837. Up to 5628 conditions per place. [2024-06-27 22:04:56,246 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 78 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2024-06-27 22:04:56,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 605 flow [2024-06-27 22:04:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:04:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:04:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-27 22:04:56,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6493055555555556 [2024-06-27 22:04:56,247 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 269 flow. Second operand 6 states and 187 transitions. [2024-06-27 22:04:56,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 605 flow [2024-06-27 22:04:56,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 597 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:04:56,253 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 327 flow [2024-06-27 22:04:56,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 22:04:56,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 22:04:56,254 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 327 flow [2024-06-27 22:04:56,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:04:56,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:56,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:04:56,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:56,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1671725330, now seen corresponding path program 1 times [2024-06-27 22:04:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609741703] [2024-06-27 22:04:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:57,064 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 22:04:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:57,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609741703] [2024-06-27 22:04:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609741703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:04:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691661797] [2024-06-27 22:04:57,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:04:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:04:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:04:57,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:04:57,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 22:04:57,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:57,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:04:57,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:57,978 INFO L124 PetriNetUnfolderBase]: 4054/6117 cut-off events. [2024-06-27 22:04:57,978 INFO L125 PetriNetUnfolderBase]: For 11165/11165 co-relation queries the response was YES. [2024-06-27 22:04:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18601 conditions, 6117 events. 4054/6117 cut-off events. For 11165/11165 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 35993 event pairs, 1360 based on Foata normal form. 2/6095 useless extension candidates. Maximal degree in co-relation 18580. Up to 5798 conditions per place. [2024-06-27 22:04:58,012 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-27 22:04:58,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 535 flow [2024-06-27 22:04:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:04:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:04:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 22:04:58,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 22:04:58,013 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 327 flow. Second operand 5 states and 132 transitions. [2024-06-27 22:04:58,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 535 flow [2024-06-27 22:04:58,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 483 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:04:58,025 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 324 flow [2024-06-27 22:04:58,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-27 22:04:58,027 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-27 22:04:58,031 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 324 flow [2024-06-27 22:04:58,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 22:04:58,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:58,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:58,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:04:58,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:58,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash -314349586, now seen corresponding path program 1 times [2024-06-27 22:04:58,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342741898] [2024-06-27 22:04:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:59,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342741898] [2024-06-27 22:04:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342741898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:59,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:59,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:04:59,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993633760] [2024-06-27 22:04:59,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:04:59,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:59,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:04:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:04:59,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:04:59,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:04:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:04:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:00,105 INFO L124 PetriNetUnfolderBase]: 4640/6740 cut-off events. [2024-06-27 22:05:00,105 INFO L125 PetriNetUnfolderBase]: For 13009/13009 co-relation queries the response was YES. [2024-06-27 22:05:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20505 conditions, 6740 events. 4640/6740 cut-off events. For 13009/13009 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37593 event pairs, 1454 based on Foata normal form. 6/6742 useless extension candidates. Maximal degree in co-relation 20480. Up to 6547 conditions per place. [2024-06-27 22:05:00,151 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 16 changer transitions 0/108 dead transitions. [2024-06-27 22:05:00,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 642 flow [2024-06-27 22:05:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:05:00,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-27 22:05:00,153 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 324 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:05:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 642 flow [2024-06-27 22:05:00,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 623 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:00,162 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 401 flow [2024-06-27 22:05:00,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-27 22:05:00,164 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 22:05:00,165 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 401 flow [2024-06-27 22:05:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:00,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:00,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:00,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:05:00,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:00,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1160622997, now seen corresponding path program 1 times [2024-06-27 22:05:00,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989638620] [2024-06-27 22:05:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:00,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:01,186 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 22:05:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989638620] [2024-06-27 22:05:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989638620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:01,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:01,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65341597] [2024-06-27 22:05:01,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:01,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:01,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:01,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:01,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:01,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:01,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:02,219 INFO L124 PetriNetUnfolderBase]: 4806/6990 cut-off events. [2024-06-27 22:05:02,220 INFO L125 PetriNetUnfolderBase]: For 19162/19173 co-relation queries the response was YES. [2024-06-27 22:05:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23067 conditions, 6990 events. 4806/6990 cut-off events. For 19162/19173 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39108 event pairs, 1667 based on Foata normal form. 11/6984 useless extension candidates. Maximal degree in co-relation 23039. Up to 6616 conditions per place. [2024-06-27 22:05:02,263 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 29 changer transitions 0/122 dead transitions. [2024-06-27 22:05:02,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 122 transitions, 865 flow [2024-06-27 22:05:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 22:05:02,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:05:02,265 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 401 flow. Second operand 6 states and 166 transitions. [2024-06-27 22:05:02,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 122 transitions, 865 flow [2024-06-27 22:05:02,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 122 transitions, 832 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:02,285 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 547 flow [2024-06-27 22:05:02,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-06-27 22:05:02,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-27 22:05:02,286 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 547 flow [2024-06-27 22:05:02,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:02,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:02,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:05:02,287 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:02,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash -209458057, now seen corresponding path program 2 times [2024-06-27 22:05:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277977618] [2024-06-27 22:05:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:03,206 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 22:05:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277977618] [2024-06-27 22:05:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277977618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:03,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576423037] [2024-06-27 22:05:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:03,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:03,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:03,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:03,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:03,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:03,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:04,218 INFO L124 PetriNetUnfolderBase]: 4798/6958 cut-off events. [2024-06-27 22:05:04,218 INFO L125 PetriNetUnfolderBase]: For 20872/20874 co-relation queries the response was YES. [2024-06-27 22:05:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23587 conditions, 6958 events. 4798/6958 cut-off events. For 20872/20874 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38619 event pairs, 1669 based on Foata normal form. 4/6943 useless extension candidates. Maximal degree in co-relation 23554. Up to 6608 conditions per place. [2024-06-27 22:05:04,259 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 75 selfloop transitions, 33 changer transitions 0/118 dead transitions. [2024-06-27 22:05:04,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 118 transitions, 881 flow [2024-06-27 22:05:04,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 22:05:04,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:05:04,260 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 547 flow. Second operand 6 states and 162 transitions. [2024-06-27 22:05:04,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 118 transitions, 881 flow [2024-06-27 22:05:04,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 118 transitions, 852 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:04,278 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 604 flow [2024-06-27 22:05:04,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2024-06-27 22:05:04,279 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-27 22:05:04,279 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 604 flow [2024-06-27 22:05:04,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:04,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:04,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:05:04,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:04,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash -488308821, now seen corresponding path program 3 times [2024-06-27 22:05:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4520282] [2024-06-27 22:05:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:04,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4520282] [2024-06-27 22:05:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4520282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:05,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:05,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434907816] [2024-06-27 22:05:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:05,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:05,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:05,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:05,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:05,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:05,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:05,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:05,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:06,320 INFO L124 PetriNetUnfolderBase]: 4957/7208 cut-off events. [2024-06-27 22:05:06,320 INFO L125 PetriNetUnfolderBase]: For 24547/24560 co-relation queries the response was YES. [2024-06-27 22:05:06,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25149 conditions, 7208 events. 4957/7208 cut-off events. For 24547/24560 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40289 event pairs, 1647 based on Foata normal form. 13/7206 useless extension candidates. Maximal degree in co-relation 25112. Up to 6723 conditions per place. [2024-06-27 22:05:06,427 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 89 selfloop transitions, 46 changer transitions 0/145 dead transitions. [2024-06-27 22:05:06,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1157 flow [2024-06-27 22:05:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:05:06,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-06-27 22:05:06,430 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 604 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:05:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1157 flow [2024-06-27 22:05:06,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1100 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:06,466 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 863 flow [2024-06-27 22:05:06,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-06-27 22:05:06,468 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-27 22:05:06,468 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 863 flow [2024-06-27 22:05:06,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:05:06,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:06,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:06,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:05:06,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:06,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -78366523, now seen corresponding path program 1 times [2024-06-27 22:05:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126702739] [2024-06-27 22:05:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:07,625 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 22:05:07,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:07,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126702739] [2024-06-27 22:05:07,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126702739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:07,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:07,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:07,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293872408] [2024-06-27 22:05:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:07,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:07,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:07,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:07,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:07,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:07,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 863 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:07,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:07,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:07,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:08,921 INFO L124 PetriNetUnfolderBase]: 5273/7716 cut-off events. [2024-06-27 22:05:08,921 INFO L125 PetriNetUnfolderBase]: For 32159/32172 co-relation queries the response was YES. [2024-06-27 22:05:08,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28044 conditions, 7716 events. 5273/7716 cut-off events. For 32159/32172 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 43400 event pairs, 1054 based on Foata normal form. 16/7700 useless extension candidates. Maximal degree in co-relation 28003. Up to 6491 conditions per place. [2024-06-27 22:05:08,969 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 116 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-27 22:05:08,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 187 transitions, 1639 flow [2024-06-27 22:05:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-27 22:05:08,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-27 22:05:08,970 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 863 flow. Second operand 9 states and 248 transitions. [2024-06-27 22:05:08,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 187 transitions, 1639 flow [2024-06-27 22:05:09,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 187 transitions, 1592 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:09,014 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1138 flow [2024-06-27 22:05:09,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2024-06-27 22:05:09,014 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-27 22:05:09,015 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1138 flow [2024-06-27 22:05:09,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:09,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:09,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:05:09,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2096736227, now seen corresponding path program 2 times [2024-06-27 22:05:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:09,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404560285] [2024-06-27 22:05:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:10,201 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 22:05:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404560285] [2024-06-27 22:05:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404560285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425785687] [2024-06-27 22:05:10,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:10,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:10,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:10,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1138 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:10,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:10,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:10,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:11,609 INFO L124 PetriNetUnfolderBase]: 5417/7895 cut-off events. [2024-06-27 22:05:11,610 INFO L125 PetriNetUnfolderBase]: For 48203/48205 co-relation queries the response was YES. [2024-06-27 22:05:11,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32052 conditions, 7895 events. 5417/7895 cut-off events. For 48203/48205 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44142 event pairs, 1028 based on Foata normal form. 6/7859 useless extension candidates. Maximal degree in co-relation 32008. Up to 6567 conditions per place. [2024-06-27 22:05:11,653 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 115 selfloop transitions, 77 changer transitions 0/202 dead transitions. [2024-06-27 22:05:11,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 202 transitions, 1999 flow [2024-06-27 22:05:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 22:05:11,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:05:11,655 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1138 flow. Second operand 9 states and 249 transitions. [2024-06-27 22:05:11,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 202 transitions, 1999 flow [2024-06-27 22:05:11,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 202 transitions, 1895 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:11,726 INFO L231 Difference]: Finished difference. Result has 104 places, 135 transitions, 1355 flow [2024-06-27 22:05:11,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1355, PETRI_PLACES=104, PETRI_TRANSITIONS=135} [2024-06-27 22:05:11,727 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-27 22:05:11,727 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 135 transitions, 1355 flow [2024-06-27 22:05:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:11,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:11,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:11,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:05:11,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:11,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1130851247, now seen corresponding path program 3 times [2024-06-27 22:05:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98566682] [2024-06-27 22:05:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98566682] [2024-06-27 22:05:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98566682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285770531] [2024-06-27 22:05:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:12,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:12,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 135 transitions, 1355 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:12,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:12,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:12,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:14,137 INFO L124 PetriNetUnfolderBase]: 5405/7876 cut-off events. [2024-06-27 22:05:14,138 INFO L125 PetriNetUnfolderBase]: For 54387/54389 co-relation queries the response was YES. [2024-06-27 22:05:14,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33117 conditions, 7876 events. 5405/7876 cut-off events. For 54387/54389 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 44050 event pairs, 1028 based on Foata normal form. 6/7842 useless extension candidates. Maximal degree in co-relation 33070. Up to 6563 conditions per place. [2024-06-27 22:05:14,196 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 106 selfloop transitions, 81 changer transitions 0/197 dead transitions. [2024-06-27 22:05:14,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 197 transitions, 1997 flow [2024-06-27 22:05:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-27 22:05:14,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-06-27 22:05:14,198 INFO L175 Difference]: Start difference. First operand has 104 places, 135 transitions, 1355 flow. Second operand 9 states and 245 transitions. [2024-06-27 22:05:14,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 197 transitions, 1997 flow [2024-06-27 22:05:14,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 1925 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:14,314 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1460 flow [2024-06-27 22:05:14,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1460, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-27 22:05:14,315 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 22:05:14,315 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1460 flow [2024-06-27 22:05:14,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:14,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:14,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:14,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:05:14,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:14,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2042297135, now seen corresponding path program 4 times [2024-06-27 22:05:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:14,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37621166] [2024-06-27 22:05:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:15,382 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 22:05:15,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37621166] [2024-06-27 22:05:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37621166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:15,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:15,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778532661] [2024-06-27 22:05:15,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:15,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:15,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1460 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:15,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:15,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:15,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:16,834 INFO L124 PetriNetUnfolderBase]: 5875/8597 cut-off events. [2024-06-27 22:05:16,834 INFO L125 PetriNetUnfolderBase]: For 62692/62705 co-relation queries the response was YES. [2024-06-27 22:05:16,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37260 conditions, 8597 events. 5875/8597 cut-off events. For 62692/62705 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48895 event pairs, 1030 based on Foata normal form. 12/8579 useless extension candidates. Maximal degree in co-relation 37210. Up to 7003 conditions per place. [2024-06-27 22:05:16,887 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 138 selfloop transitions, 92 changer transitions 0/240 dead transitions. [2024-06-27 22:05:16,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 240 transitions, 2579 flow [2024-06-27 22:05:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-27 22:05:16,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-27 22:05:16,889 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1460 flow. Second operand 10 states and 274 transitions. [2024-06-27 22:05:16,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 240 transitions, 2579 flow [2024-06-27 22:05:17,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 240 transitions, 2344 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:17,013 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1811 flow [2024-06-27 22:05:17,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2024-06-27 22:05:17,013 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 22:05:17,014 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1811 flow [2024-06-27 22:05:17,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:17,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:17,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:17,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:05:17,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:17,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:17,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1980525069, now seen corresponding path program 1 times [2024-06-27 22:05:17,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:17,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222398595] [2024-06-27 22:05:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222398595] [2024-06-27 22:05:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222398595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:17,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078490768] [2024-06-27 22:05:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:17,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:05:17,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1811 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:05:17,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:17,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:05:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:18,946 INFO L124 PetriNetUnfolderBase]: 5008/8020 cut-off events. [2024-06-27 22:05:18,946 INFO L125 PetriNetUnfolderBase]: For 63833/63854 co-relation queries the response was YES. [2024-06-27 22:05:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33670 conditions, 8020 events. 5008/8020 cut-off events. For 63833/63854 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52046 event pairs, 1930 based on Foata normal form. 18/7855 useless extension candidates. Maximal degree in co-relation 33615. Up to 6997 conditions per place. [2024-06-27 22:05:19,012 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 148 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2024-06-27 22:05:19,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 2238 flow [2024-06-27 22:05:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:05:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:05:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 22:05:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:05:19,014 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1811 flow. Second operand 5 states and 128 transitions. [2024-06-27 22:05:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 2238 flow [2024-06-27 22:05:19,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 183 transitions, 2192 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:19,110 INFO L231 Difference]: Finished difference. Result has 121 places, 172 transitions, 1892 flow [2024-06-27 22:05:19,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1892, PETRI_PLACES=121, PETRI_TRANSITIONS=172} [2024-06-27 22:05:19,110 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 22:05:19,110 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 172 transitions, 1892 flow [2024-06-27 22:05:19,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:05:19,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:19,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:19,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:05:19,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:19,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash 768888935, now seen corresponding path program 1 times [2024-06-27 22:05:19,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:19,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286392411] [2024-06-27 22:05:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:19,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286392411] [2024-06-27 22:05:20,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286392411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:20,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:20,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643056072] [2024-06-27 22:05:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:20,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 172 transitions, 1892 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:20,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:20,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:20,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:22,217 INFO L124 PetriNetUnfolderBase]: 6110/9080 cut-off events. [2024-06-27 22:05:22,218 INFO L125 PetriNetUnfolderBase]: For 74975/74982 co-relation queries the response was YES. [2024-06-27 22:05:22,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40033 conditions, 9080 events. 6110/9080 cut-off events. For 74975/74982 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53578 event pairs, 1155 based on Foata normal form. 26/9044 useless extension candidates. Maximal degree in co-relation 39973. Up to 6770 conditions per place. [2024-06-27 22:05:22,287 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 146 selfloop transitions, 93 changer transitions 0/249 dead transitions. [2024-06-27 22:05:22,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 249 transitions, 2826 flow [2024-06-27 22:05:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 22:05:22,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-27 22:05:22,290 INFO L175 Difference]: Start difference. First operand has 121 places, 172 transitions, 1892 flow. Second operand 10 states and 267 transitions. [2024-06-27 22:05:22,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 249 transitions, 2826 flow [2024-06-27 22:05:22,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 249 transitions, 2738 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:22,414 INFO L231 Difference]: Finished difference. Result has 130 places, 176 transitions, 2102 flow [2024-06-27 22:05:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2102, PETRI_PLACES=130, PETRI_TRANSITIONS=176} [2024-06-27 22:05:22,415 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 22:05:22,415 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 176 transitions, 2102 flow [2024-06-27 22:05:22,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:22,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:22,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:05:22,416 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:22,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1332835941, now seen corresponding path program 2 times [2024-06-27 22:05:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976340358] [2024-06-27 22:05:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:23,433 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 22:05:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976340358] [2024-06-27 22:05:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976340358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:23,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:23,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510756859] [2024-06-27 22:05:23,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:23,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 176 transitions, 2102 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:23,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:23,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:24,933 INFO L124 PetriNetUnfolderBase]: 6234/9308 cut-off events. [2024-06-27 22:05:24,933 INFO L125 PetriNetUnfolderBase]: For 95051/95062 co-relation queries the response was YES. [2024-06-27 22:05:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42020 conditions, 9308 events. 6234/9308 cut-off events. For 95051/95062 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 55336 event pairs, 1195 based on Foata normal form. 12/9246 useless extension candidates. Maximal degree in co-relation 41957. Up to 7193 conditions per place. [2024-06-27 22:05:25,014 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 123 selfloop transitions, 111 changer transitions 0/244 dead transitions. [2024-06-27 22:05:25,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 244 transitions, 3028 flow [2024-06-27 22:05:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 22:05:25,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911458333333334 [2024-06-27 22:05:25,016 INFO L175 Difference]: Start difference. First operand has 130 places, 176 transitions, 2102 flow. Second operand 8 states and 227 transitions. [2024-06-27 22:05:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 244 transitions, 3028 flow [2024-06-27 22:05:25,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 244 transitions, 2772 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:05:25,225 INFO L231 Difference]: Finished difference. Result has 131 places, 185 transitions, 2274 flow [2024-06-27 22:05:25,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2274, PETRI_PLACES=131, PETRI_TRANSITIONS=185} [2024-06-27 22:05:25,225 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 22:05:25,225 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 185 transitions, 2274 flow [2024-06-27 22:05:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:25,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:25,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:25,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:05:25,226 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:25,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash 594956851, now seen corresponding path program 1 times [2024-06-27 22:05:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991879478] [2024-06-27 22:05:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:25,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:25,278 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 22:05:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991879478] [2024-06-27 22:05:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991879478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:05:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559373631] [2024-06-27 22:05:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:25,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:05:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:05:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:05:25,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 22:05:25,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 185 transitions, 2274 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:05:25,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:25,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 22:05:25,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:25,815 INFO L124 PetriNetUnfolderBase]: 2237/4540 cut-off events. [2024-06-27 22:05:25,815 INFO L125 PetriNetUnfolderBase]: For 55903/57547 co-relation queries the response was YES. [2024-06-27 22:05:25,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15581 conditions, 4540 events. 2237/4540 cut-off events. For 55903/57547 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 35901 event pairs, 580 based on Foata normal form. 418/4500 useless extension candidates. Maximal degree in co-relation 15544. Up to 2522 conditions per place. [2024-06-27 22:05:25,849 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 33 selfloop transitions, 34 changer transitions 0/164 dead transitions. [2024-06-27 22:05:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 164 transitions, 2004 flow [2024-06-27 22:05:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:05:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:05:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-27 22:05:25,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7430555555555556 [2024-06-27 22:05:25,851 INFO L175 Difference]: Start difference. First operand has 131 places, 185 transitions, 2274 flow. Second operand 3 states and 107 transitions. [2024-06-27 22:05:25,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 164 transitions, 2004 flow [2024-06-27 22:05:25,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 1848 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:25,881 INFO L231 Difference]: Finished difference. Result has 118 places, 156 transitions, 1764 flow [2024-06-27 22:05:25,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1764, PETRI_PLACES=118, PETRI_TRANSITIONS=156} [2024-06-27 22:05:25,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 22:05:25,882 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 156 transitions, 1764 flow [2024-06-27 22:05:25,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 22:05:25,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:25,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:05:25,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:25,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1254601107, now seen corresponding path program 3 times [2024-06-27 22:05:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623815806] [2024-06-27 22:05:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:27,117 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 22:05:27,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623815806] [2024-06-27 22:05:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623815806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526545302] [2024-06-27 22:05:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:27,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 156 transitions, 1764 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:27,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:27,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:28,668 INFO L124 PetriNetUnfolderBase]: 5448/8136 cut-off events. [2024-06-27 22:05:28,668 INFO L125 PetriNetUnfolderBase]: For 66084/66086 co-relation queries the response was YES. [2024-06-27 22:05:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34386 conditions, 8136 events. 5448/8136 cut-off events. For 66084/66086 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 47212 event pairs, 977 based on Foata normal form. 8/8071 useless extension candidates. Maximal degree in co-relation 34353. Up to 6518 conditions per place. [2024-06-27 22:05:28,726 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 113 selfloop transitions, 97 changer transitions 6/226 dead transitions. [2024-06-27 22:05:28,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 226 transitions, 2576 flow [2024-06-27 22:05:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:05:28,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 22:05:28,728 INFO L175 Difference]: Start difference. First operand has 118 places, 156 transitions, 1764 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:05:28,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 226 transitions, 2576 flow [2024-06-27 22:05:28,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 226 transitions, 2504 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:28,848 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 1974 flow [2024-06-27 22:05:28,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2024-06-27 22:05:28,849 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-27 22:05:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 1974 flow [2024-06-27 22:05:28,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:28,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:28,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:28,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:05:28,849 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:28,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 828276423, now seen corresponding path program 4 times [2024-06-27 22:05:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:28,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109517859] [2024-06-27 22:05:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:28,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:30,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109517859] [2024-06-27 22:05:30,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109517859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:30,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:30,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610774581] [2024-06-27 22:05:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:30,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:30,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:30,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:30,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 1974 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:30,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:30,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:30,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:31,521 INFO L124 PetriNetUnfolderBase]: 4801/7254 cut-off events. [2024-06-27 22:05:31,522 INFO L125 PetriNetUnfolderBase]: For 67167/67169 co-relation queries the response was YES. [2024-06-27 22:05:31,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31975 conditions, 7254 events. 4801/7254 cut-off events. For 67167/67169 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42236 event pairs, 859 based on Foata normal form. 8/7207 useless extension candidates. Maximal degree in co-relation 31941. Up to 5737 conditions per place. [2024-06-27 22:05:31,581 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 118 selfloop transitions, 104 changer transitions 0/232 dead transitions. [2024-06-27 22:05:31,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 232 transitions, 2832 flow [2024-06-27 22:05:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:05:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:05:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:05:31,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:05:31,583 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 1974 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:05:31,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 232 transitions, 2832 flow [2024-06-27 22:05:31,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 232 transitions, 2580 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:31,695 INFO L231 Difference]: Finished difference. Result has 127 places, 164 transitions, 1980 flow [2024-06-27 22:05:31,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1980, PETRI_PLACES=127, PETRI_TRANSITIONS=164} [2024-06-27 22:05:31,695 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 22:05:31,696 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 164 transitions, 1980 flow [2024-06-27 22:05:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:31,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:31,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:05:31,696 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:31,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash -199011249, now seen corresponding path program 5 times [2024-06-27 22:05:31,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:31,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120313704] [2024-06-27 22:05:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:32,723 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 22:05:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120313704] [2024-06-27 22:05:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120313704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:32,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348365291] [2024-06-27 22:05:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:32,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:32,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 164 transitions, 1980 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:32,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:32,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:32,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:34,147 INFO L124 PetriNetUnfolderBase]: 4829/7357 cut-off events. [2024-06-27 22:05:34,147 INFO L125 PetriNetUnfolderBase]: For 69526/69531 co-relation queries the response was YES. [2024-06-27 22:05:34,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32175 conditions, 7357 events. 4829/7357 cut-off events. For 69526/69531 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 43424 event pairs, 893 based on Foata normal form. 6/7299 useless extension candidates. Maximal degree in co-relation 32140. Up to 5762 conditions per place. [2024-06-27 22:05:34,196 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 122 selfloop transitions, 100 changer transitions 0/232 dead transitions. [2024-06-27 22:05:34,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 232 transitions, 2789 flow [2024-06-27 22:05:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 22:05:34,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:05:34,199 INFO L175 Difference]: Start difference. First operand has 127 places, 164 transitions, 1980 flow. Second operand 9 states and 240 transitions. [2024-06-27 22:05:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 232 transitions, 2789 flow [2024-06-27 22:05:34,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 232 transitions, 2607 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:34,289 INFO L231 Difference]: Finished difference. Result has 130 places, 167 transitions, 2048 flow [2024-06-27 22:05:34,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2048, PETRI_PLACES=130, PETRI_TRANSITIONS=167} [2024-06-27 22:05:34,290 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 22:05:34,290 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 167 transitions, 2048 flow [2024-06-27 22:05:34,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:34,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:34,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:05:34,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash -705649517, now seen corresponding path program 6 times [2024-06-27 22:05:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365721931] [2024-06-27 22:05:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:35,153 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 22:05:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365721931] [2024-06-27 22:05:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365721931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109898071] [2024-06-27 22:05:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:35,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:35,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 167 transitions, 2048 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:35,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:35,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:36,503 INFO L124 PetriNetUnfolderBase]: 5033/7741 cut-off events. [2024-06-27 22:05:36,504 INFO L125 PetriNetUnfolderBase]: For 81385/81392 co-relation queries the response was YES. [2024-06-27 22:05:36,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33967 conditions, 7741 events. 5033/7741 cut-off events. For 81385/81392 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46678 event pairs, 931 based on Foata normal form. 8/7676 useless extension candidates. Maximal degree in co-relation 33931. Up to 5928 conditions per place. [2024-06-27 22:05:36,561 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 111 selfloop transitions, 121 changer transitions 0/242 dead transitions. [2024-06-27 22:05:36,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 242 transitions, 3026 flow [2024-06-27 22:05:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:05:36,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-06-27 22:05:36,562 INFO L175 Difference]: Start difference. First operand has 130 places, 167 transitions, 2048 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:05:36,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 242 transitions, 3026 flow [2024-06-27 22:05:36,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 242 transitions, 2679 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:05:36,663 INFO L231 Difference]: Finished difference. Result has 131 places, 193 transitions, 2437 flow [2024-06-27 22:05:36,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2437, PETRI_PLACES=131, PETRI_TRANSITIONS=193} [2024-06-27 22:05:36,664 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 22:05:36,664 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 193 transitions, 2437 flow [2024-06-27 22:05:36,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:36,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:36,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:36,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:05:36,666 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:36,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -166108500, now seen corresponding path program 1 times [2024-06-27 22:05:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127117914] [2024-06-27 22:05:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:38,076 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 22:05:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127117914] [2024-06-27 22:05:38,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127117914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916678244] [2024-06-27 22:05:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:38,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:38,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:38,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 193 transitions, 2437 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:38,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:38,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:39,569 INFO L124 PetriNetUnfolderBase]: 5025/8111 cut-off events. [2024-06-27 22:05:39,569 INFO L125 PetriNetUnfolderBase]: For 82484/82486 co-relation queries the response was YES. [2024-06-27 22:05:39,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35196 conditions, 8111 events. 5025/8111 cut-off events. For 82484/82486 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 52370 event pairs, 1628 based on Foata normal form. 4/7939 useless extension candidates. Maximal degree in co-relation 35157. Up to 7054 conditions per place. [2024-06-27 22:05:39,634 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 209 selfloop transitions, 21 changer transitions 0/240 dead transitions. [2024-06-27 22:05:39,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 240 transitions, 3077 flow [2024-06-27 22:05:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:05:39,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 22:05:39,664 INFO L175 Difference]: Start difference. First operand has 131 places, 193 transitions, 2437 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:05:39,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 240 transitions, 3077 flow [2024-06-27 22:05:39,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 240 transitions, 2919 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:39,759 INFO L231 Difference]: Finished difference. Result has 136 places, 198 transitions, 2394 flow [2024-06-27 22:05:39,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2394, PETRI_PLACES=136, PETRI_TRANSITIONS=198} [2024-06-27 22:05:39,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:05:39,760 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 198 transitions, 2394 flow [2024-06-27 22:05:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 22:05:39,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:39,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:05:39,761 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:39,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:39,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1284611185, now seen corresponding path program 1 times [2024-06-27 22:05:39,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:39,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005675104] [2024-06-27 22:05:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:41,168 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 22:05:41,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005675104] [2024-06-27 22:05:41,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005675104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:41,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:41,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739517388] [2024-06-27 22:05:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:41,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:41,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 198 transitions, 2394 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:41,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:41,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:41,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:42,364 INFO L124 PetriNetUnfolderBase]: 4729/7677 cut-off events. [2024-06-27 22:05:42,364 INFO L125 PetriNetUnfolderBase]: For 85172/85190 co-relation queries the response was YES. [2024-06-27 22:05:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33516 conditions, 7677 events. 4729/7677 cut-off events. For 85172/85190 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 50065 event pairs, 1633 based on Foata normal form. 17/7507 useless extension candidates. Maximal degree in co-relation 33475. Up to 6671 conditions per place. [2024-06-27 22:05:42,411 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 179 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-27 22:05:42,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 217 transitions, 2852 flow [2024-06-27 22:05:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 22:05:42,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-27 22:05:42,412 INFO L175 Difference]: Start difference. First operand has 136 places, 198 transitions, 2394 flow. Second operand 7 states and 158 transitions. [2024-06-27 22:05:42,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 217 transitions, 2852 flow [2024-06-27 22:05:42,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 217 transitions, 2797 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:42,497 INFO L231 Difference]: Finished difference. Result has 138 places, 201 transitions, 2405 flow [2024-06-27 22:05:42,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=138, PETRI_TRANSITIONS=201} [2024-06-27 22:05:42,498 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-27 22:05:42,498 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 201 transitions, 2405 flow [2024-06-27 22:05:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:42,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:42,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:42,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:05:42,499 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:42,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1880956234, now seen corresponding path program 1 times [2024-06-27 22:05:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760040893] [2024-06-27 22:05:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:43,625 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 22:05:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:43,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760040893] [2024-06-27 22:05:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760040893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:43,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500335711] [2024-06-27 22:05:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:43,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:43,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 201 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:45,046 INFO L124 PetriNetUnfolderBase]: 5064/7721 cut-off events. [2024-06-27 22:05:45,046 INFO L125 PetriNetUnfolderBase]: For 89815/89820 co-relation queries the response was YES. [2024-06-27 22:05:45,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35622 conditions, 7721 events. 5064/7721 cut-off events. For 89815/89820 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 45876 event pairs, 1137 based on Foata normal form. 8/7666 useless extension candidates. Maximal degree in co-relation 35580. Up to 6805 conditions per place. [2024-06-27 22:05:45,103 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 173 selfloop transitions, 56 changer transitions 0/239 dead transitions. [2024-06-27 22:05:45,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 239 transitions, 3007 flow [2024-06-27 22:05:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:05:45,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 22:05:45,104 INFO L175 Difference]: Start difference. First operand has 138 places, 201 transitions, 2405 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:05:45,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 239 transitions, 3007 flow [2024-06-27 22:05:45,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 239 transitions, 2961 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:45,212 INFO L231 Difference]: Finished difference. Result has 141 places, 204 transitions, 2513 flow [2024-06-27 22:05:45,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=141, PETRI_TRANSITIONS=204} [2024-06-27 22:05:45,212 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 22:05:45,212 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 204 transitions, 2513 flow [2024-06-27 22:05:45,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:45,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:45,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:45,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:05:45,213 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:45,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1880895784, now seen corresponding path program 2 times [2024-06-27 22:05:45,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:45,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110628253] [2024-06-27 22:05:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:46,252 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 22:05:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110628253] [2024-06-27 22:05:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110628253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:46,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21979975] [2024-06-27 22:05:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:46,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:46,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 204 transitions, 2513 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:47,526 INFO L124 PetriNetUnfolderBase]: 5176/7917 cut-off events. [2024-06-27 22:05:47,527 INFO L125 PetriNetUnfolderBase]: For 99851/99856 co-relation queries the response was YES. [2024-06-27 22:05:47,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37469 conditions, 7917 events. 5176/7917 cut-off events. For 99851/99856 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 47527 event pairs, 1142 based on Foata normal form. 8/7854 useless extension candidates. Maximal degree in co-relation 37426. Up to 6836 conditions per place. [2024-06-27 22:05:47,583 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 181 selfloop transitions, 55 changer transitions 0/246 dead transitions. [2024-06-27 22:05:47,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 246 transitions, 3141 flow [2024-06-27 22:05:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 22:05:47,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 22:05:47,584 INFO L175 Difference]: Start difference. First operand has 141 places, 204 transitions, 2513 flow. Second operand 8 states and 195 transitions. [2024-06-27 22:05:47,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 246 transitions, 3141 flow [2024-06-27 22:05:47,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 246 transitions, 3015 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:47,697 INFO L231 Difference]: Finished difference. Result has 144 places, 211 transitions, 2582 flow [2024-06-27 22:05:47,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2582, PETRI_PLACES=144, PETRI_TRANSITIONS=211} [2024-06-27 22:05:47,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 22:05:47,698 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 211 transitions, 2582 flow [2024-06-27 22:05:47,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:47,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:47,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:47,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:05:47,698 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:47,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:47,699 INFO L85 PathProgramCache]: Analyzing trace with hash 901160274, now seen corresponding path program 1 times [2024-06-27 22:05:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595576523] [2024-06-27 22:05:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:48,486 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 22:05:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595576523] [2024-06-27 22:05:48,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595576523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:48,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:48,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:48,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348990108] [2024-06-27 22:05:48,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:48,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:48,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:48,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:48,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 211 transitions, 2582 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:05:48,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:48,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:48,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:49,638 INFO L124 PetriNetUnfolderBase]: 4909/8067 cut-off events. [2024-06-27 22:05:49,638 INFO L125 PetriNetUnfolderBase]: For 105064/105095 co-relation queries the response was YES. [2024-06-27 22:05:49,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37336 conditions, 8067 events. 4909/8067 cut-off events. For 105064/105095 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 53553 event pairs, 1558 based on Foata normal form. 30/7897 useless extension candidates. Maximal degree in co-relation 37291. Up to 6831 conditions per place. [2024-06-27 22:05:49,705 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 196 selfloop transitions, 24 changer transitions 0/246 dead transitions. [2024-06-27 22:05:49,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 246 transitions, 3318 flow [2024-06-27 22:05:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:05:49,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:05:49,707 INFO L175 Difference]: Start difference. First operand has 144 places, 211 transitions, 2582 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:05:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 246 transitions, 3318 flow [2024-06-27 22:05:49,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 246 transitions, 3189 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:49,834 INFO L231 Difference]: Finished difference. Result has 148 places, 227 transitions, 2785 flow [2024-06-27 22:05:49,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2785, PETRI_PLACES=148, PETRI_TRANSITIONS=227} [2024-06-27 22:05:49,835 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-27 22:05:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 227 transitions, 2785 flow [2024-06-27 22:05:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:05:49,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:49,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:05:49,836 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:49,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1168226820, now seen corresponding path program 2 times [2024-06-27 22:05:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:49,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538954572] [2024-06-27 22:05:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:50,698 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 22:05:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:50,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538954572] [2024-06-27 22:05:50,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538954572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:50,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:50,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:50,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092671532] [2024-06-27 22:05:50,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:50,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:50,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:50,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:50,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 227 transitions, 2785 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:05:50,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:50,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:50,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:51,834 INFO L124 PetriNetUnfolderBase]: 4921/8084 cut-off events. [2024-06-27 22:05:51,835 INFO L125 PetriNetUnfolderBase]: For 110769/110809 co-relation queries the response was YES. [2024-06-27 22:05:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38236 conditions, 8084 events. 4921/8084 cut-off events. For 110769/110809 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 53631 event pairs, 1563 based on Foata normal form. 36/7918 useless extension candidates. Maximal degree in co-relation 38187. Up to 6825 conditions per place. [2024-06-27 22:05:51,907 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 191 selfloop transitions, 35 changer transitions 0/252 dead transitions. [2024-06-27 22:05:51,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 252 transitions, 3439 flow [2024-06-27 22:05:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 22:05:51,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 22:05:51,909 INFO L175 Difference]: Start difference. First operand has 148 places, 227 transitions, 2785 flow. Second operand 6 states and 147 transitions. [2024-06-27 22:05:51,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 252 transitions, 3439 flow [2024-06-27 22:05:52,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 252 transitions, 3391 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-06-27 22:05:52,055 INFO L231 Difference]: Finished difference. Result has 154 places, 235 transitions, 2910 flow [2024-06-27 22:05:52,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2910, PETRI_PLACES=154, PETRI_TRANSITIONS=235} [2024-06-27 22:05:52,056 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 22:05:52,056 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 235 transitions, 2910 flow [2024-06-27 22:05:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:05:52,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:52,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:52,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:05:52,057 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:52,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1879026580, now seen corresponding path program 3 times [2024-06-27 22:05:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407825840] [2024-06-27 22:05:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:52,908 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 22:05:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407825840] [2024-06-27 22:05:52,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407825840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:52,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:52,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898104253] [2024-06-27 22:05:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:52,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:52,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 235 transitions, 2910 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:52,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:52,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:54,377 INFO L124 PetriNetUnfolderBase]: 5268/8099 cut-off events. [2024-06-27 22:05:54,378 INFO L125 PetriNetUnfolderBase]: For 121728/121731 co-relation queries the response was YES. [2024-06-27 22:05:54,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41325 conditions, 8099 events. 5268/8099 cut-off events. For 121728/121731 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49035 event pairs, 1169 based on Foata normal form. 6/8022 useless extension candidates. Maximal degree in co-relation 41274. Up to 7095 conditions per place. [2024-06-27 22:05:54,465 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 208 selfloop transitions, 67 changer transitions 0/285 dead transitions. [2024-06-27 22:05:54,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 285 transitions, 3697 flow [2024-06-27 22:05:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:05:54,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 22:05:54,467 INFO L175 Difference]: Start difference. First operand has 154 places, 235 transitions, 2910 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:05:54,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 285 transitions, 3697 flow [2024-06-27 22:05:54,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 285 transitions, 3610 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:54,676 INFO L231 Difference]: Finished difference. Result has 160 places, 241 transitions, 3060 flow [2024-06-27 22:05:54,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=160, PETRI_TRANSITIONS=241} [2024-06-27 22:05:54,676 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-27 22:05:54,676 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 241 transitions, 3060 flow [2024-06-27 22:05:54,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:54,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:54,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:05:54,677 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:54,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash -379424306, now seen corresponding path program 4 times [2024-06-27 22:05:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528233678] [2024-06-27 22:05:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:55,544 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 22:05:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528233678] [2024-06-27 22:05:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528233678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:55,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:55,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:55,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698401321] [2024-06-27 22:05:55,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:55,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:55,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:55,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:55,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 241 transitions, 3060 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:55,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:55,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:55,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:56,885 INFO L124 PetriNetUnfolderBase]: 5475/8429 cut-off events. [2024-06-27 22:05:56,886 INFO L125 PetriNetUnfolderBase]: For 132259/132262 co-relation queries the response was YES. [2024-06-27 22:05:56,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43369 conditions, 8429 events. 5475/8429 cut-off events. For 132259/132262 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 51605 event pairs, 1209 based on Foata normal form. 6/8350 useless extension candidates. Maximal degree in co-relation 43316. Up to 7164 conditions per place. [2024-06-27 22:05:56,967 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 219 selfloop transitions, 74 changer transitions 0/303 dead transitions. [2024-06-27 22:05:56,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 303 transitions, 3944 flow [2024-06-27 22:05:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:05:56,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 22:05:56,968 INFO L175 Difference]: Start difference. First operand has 160 places, 241 transitions, 3060 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:05:56,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 303 transitions, 3944 flow [2024-06-27 22:05:57,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 303 transitions, 3792 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:05:57,209 INFO L231 Difference]: Finished difference. Result has 163 places, 258 transitions, 3264 flow [2024-06-27 22:05:57,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=163, PETRI_TRANSITIONS=258} [2024-06-27 22:05:57,212 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 22:05:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 258 transitions, 3264 flow [2024-06-27 22:05:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:57,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:57,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:05:57,212 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:57,213 INFO L85 PathProgramCache]: Analyzing trace with hash -168337262, now seen corresponding path program 5 times [2024-06-27 22:05:57,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:57,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320935904] [2024-06-27 22:05:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:57,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:57,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320935904] [2024-06-27 22:05:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320935904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937428522] [2024-06-27 22:05:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:57,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:05:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 258 transitions, 3264 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 22:05:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:05:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:59,218 INFO L124 PetriNetUnfolderBase]: 4438/7449 cut-off events. [2024-06-27 22:05:59,218 INFO L125 PetriNetUnfolderBase]: For 119768/119960 co-relation queries the response was YES. [2024-06-27 22:05:59,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38369 conditions, 7449 events. 4438/7449 cut-off events. For 119768/119960 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50222 event pairs, 716 based on Foata normal form. 176/7457 useless extension candidates. Maximal degree in co-relation 38314. Up to 5222 conditions per place. [2024-06-27 22:05:59,293 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 157 selfloop transitions, 96 changer transitions 0/319 dead transitions. [2024-06-27 22:05:59,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 319 transitions, 4176 flow [2024-06-27 22:05:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 22:05:59,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:05:59,295 INFO L175 Difference]: Start difference. First operand has 163 places, 258 transitions, 3264 flow. Second operand 7 states and 196 transitions. [2024-06-27 22:05:59,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 319 transitions, 4176 flow [2024-06-27 22:05:59,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 319 transitions, 4041 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:59,556 INFO L231 Difference]: Finished difference. Result has 168 places, 278 transitions, 3664 flow [2024-06-27 22:05:59,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3664, PETRI_PLACES=168, PETRI_TRANSITIONS=278} [2024-06-27 22:05:59,557 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 114 predicate places. [2024-06-27 22:05:59,558 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 278 transitions, 3664 flow [2024-06-27 22:05:59,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 22:05:59,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:59,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:59,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:05:59,558 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:59,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash -75462932, now seen corresponding path program 3 times [2024-06-27 22:05:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995153497] [2024-06-27 22:05:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:00,306 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 22:06:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995153497] [2024-06-27 22:06:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995153497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:00,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:00,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477494474] [2024-06-27 22:06:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:00,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 278 transitions, 3664 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:00,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:00,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:00,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:01,597 INFO L124 PetriNetUnfolderBase]: 5274/8668 cut-off events. [2024-06-27 22:06:01,597 INFO L125 PetriNetUnfolderBase]: For 146444/146490 co-relation queries the response was YES. [2024-06-27 22:06:01,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44829 conditions, 8668 events. 5274/8668 cut-off events. For 146444/146490 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 58209 event pairs, 1747 based on Foata normal form. 47/8508 useless extension candidates. Maximal degree in co-relation 44771. Up to 7318 conditions per place. [2024-06-27 22:06:01,690 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 238 selfloop transitions, 30 changer transitions 0/309 dead transitions. [2024-06-27 22:06:01,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 309 transitions, 4348 flow [2024-06-27 22:06:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:06:01,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 22:06:01,692 INFO L175 Difference]: Start difference. First operand has 168 places, 278 transitions, 3664 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:06:01,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 309 transitions, 4348 flow [2024-06-27 22:06:01,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 309 transitions, 4295 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:01,970 INFO L231 Difference]: Finished difference. Result has 173 places, 285 transitions, 3773 flow [2024-06-27 22:06:01,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3773, PETRI_PLACES=173, PETRI_TRANSITIONS=285} [2024-06-27 22:06:01,970 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 22:06:01,971 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 285 transitions, 3773 flow [2024-06-27 22:06:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:01,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:01,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:01,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:06:01,971 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:01,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash 607424172, now seen corresponding path program 1 times [2024-06-27 22:06:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518985914] [2024-06-27 22:06:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:02,708 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 22:06:02,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:02,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518985914] [2024-06-27 22:06:02,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518985914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:02,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998812558] [2024-06-27 22:06:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:02,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:02,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:02,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 285 transitions, 3773 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:02,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:02,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:02,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:04,079 INFO L124 PetriNetUnfolderBase]: 5324/8831 cut-off events. [2024-06-27 22:06:04,079 INFO L125 PetriNetUnfolderBase]: For 156721/156721 co-relation queries the response was YES. [2024-06-27 22:06:04,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47011 conditions, 8831 events. 5324/8831 cut-off events. For 156721/156721 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 59705 event pairs, 1705 based on Foata normal form. 1/8613 useless extension candidates. Maximal degree in co-relation 46950. Up to 7527 conditions per place. [2024-06-27 22:06:04,170 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 282 selfloop transitions, 16 changer transitions 0/310 dead transitions. [2024-06-27 22:06:04,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 310 transitions, 4548 flow [2024-06-27 22:06:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:06:04,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:06:04,172 INFO L175 Difference]: Start difference. First operand has 173 places, 285 transitions, 3773 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:06:04,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 310 transitions, 4548 flow [2024-06-27 22:06:04,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 310 transitions, 4474 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:04,470 INFO L231 Difference]: Finished difference. Result has 176 places, 293 transitions, 3878 flow [2024-06-27 22:06:04,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3878, PETRI_PLACES=176, PETRI_TRANSITIONS=293} [2024-06-27 22:06:04,470 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-27 22:06:04,471 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 293 transitions, 3878 flow [2024-06-27 22:06:04,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:04,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:04,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:04,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:06:04,471 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:04,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1168232772, now seen corresponding path program 2 times [2024-06-27 22:06:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539474156] [2024-06-27 22:06:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:05,353 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 22:06:05,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:05,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539474156] [2024-06-27 22:06:05,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539474156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:05,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:05,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:05,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256590105] [2024-06-27 22:06:05,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:05,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:05,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 293 transitions, 3878 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:05,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:05,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:06,892 INFO L124 PetriNetUnfolderBase]: 5321/8829 cut-off events. [2024-06-27 22:06:06,892 INFO L125 PetriNetUnfolderBase]: For 166110/166116 co-relation queries the response was YES. [2024-06-27 22:06:06,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47965 conditions, 8829 events. 5321/8829 cut-off events. For 166110/166116 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 59693 event pairs, 1711 based on Foata normal form. 5/8614 useless extension candidates. Maximal degree in co-relation 47903. Up to 7509 conditions per place. [2024-06-27 22:06:06,968 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 276 selfloop transitions, 23 changer transitions 0/311 dead transitions. [2024-06-27 22:06:06,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 311 transitions, 4584 flow [2024-06-27 22:06:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:06:06,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 22:06:06,970 INFO L175 Difference]: Start difference. First operand has 176 places, 293 transitions, 3878 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:06:06,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 311 transitions, 4584 flow [2024-06-27 22:06:07,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 311 transitions, 4525 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:07,226 INFO L231 Difference]: Finished difference. Result has 181 places, 297 transitions, 3940 flow [2024-06-27 22:06:07,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3940, PETRI_PLACES=181, PETRI_TRANSITIONS=297} [2024-06-27 22:06:07,227 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-27 22:06:07,227 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 297 transitions, 3940 flow [2024-06-27 22:06:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 22:06:07,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:07,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:07,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:06:07,227 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:07,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1168242692, now seen corresponding path program 1 times [2024-06-27 22:06:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694578562] [2024-06-27 22:06:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:08,661 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 22:06:08,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694578562] [2024-06-27 22:06:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694578562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:08,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:08,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778071378] [2024-06-27 22:06:08,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:08,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:08,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:08,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 297 transitions, 3940 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:06:08,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:08,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:08,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:10,107 INFO L124 PetriNetUnfolderBase]: 5299/8626 cut-off events. [2024-06-27 22:06:10,107 INFO L125 PetriNetUnfolderBase]: For 170718/170752 co-relation queries the response was YES. [2024-06-27 22:06:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46952 conditions, 8626 events. 5299/8626 cut-off events. For 170718/170752 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 57395 event pairs, 1800 based on Foata normal form. 36/8460 useless extension candidates. Maximal degree in co-relation 46888. Up to 7341 conditions per place. [2024-06-27 22:06:10,209 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 260 selfloop transitions, 18 changer transitions 0/322 dead transitions. [2024-06-27 22:06:10,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 322 transitions, 4636 flow [2024-06-27 22:06:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:06:10,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 22:06:10,210 INFO L175 Difference]: Start difference. First operand has 181 places, 297 transitions, 3940 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:06:10,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 322 transitions, 4636 flow [2024-06-27 22:06:10,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 322 transitions, 4543 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:10,492 INFO L231 Difference]: Finished difference. Result has 184 places, 300 transitions, 3931 flow [2024-06-27 22:06:10,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3847, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3931, PETRI_PLACES=184, PETRI_TRANSITIONS=300} [2024-06-27 22:06:10,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 22:06:10,492 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 300 transitions, 3931 flow [2024-06-27 22:06:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:06:10,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:10,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:10,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:06:10,493 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:10,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1733057808, now seen corresponding path program 1 times [2024-06-27 22:06:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294630687] [2024-06-27 22:06:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:11,655 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 22:06:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294630687] [2024-06-27 22:06:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294630687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:11,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:11,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738064910] [2024-06-27 22:06:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:11,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:11,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 300 transitions, 3931 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:11,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:11,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:11,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:13,718 INFO L124 PetriNetUnfolderBase]: 5840/9202 cut-off events. [2024-06-27 22:06:13,719 INFO L125 PetriNetUnfolderBase]: For 201298/201304 co-relation queries the response was YES. [2024-06-27 22:06:13,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52844 conditions, 9202 events. 5840/9202 cut-off events. For 201298/201304 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58742 event pairs, 1074 based on Foata normal form. 25/9063 useless extension candidates. Maximal degree in co-relation 52779. Up to 6838 conditions per place. [2024-06-27 22:06:13,795 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 214 selfloop transitions, 130 changer transitions 0/354 dead transitions. [2024-06-27 22:06:13,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 354 transitions, 4955 flow [2024-06-27 22:06:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:06:13,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:06:13,798 INFO L175 Difference]: Start difference. First operand has 184 places, 300 transitions, 3931 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:06:13,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 354 transitions, 4955 flow [2024-06-27 22:06:14,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 354 transitions, 4897 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:14,042 INFO L231 Difference]: Finished difference. Result has 188 places, 304 transitions, 4217 flow [2024-06-27 22:06:14,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4217, PETRI_PLACES=188, PETRI_TRANSITIONS=304} [2024-06-27 22:06:14,043 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 22:06:14,043 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 304 transitions, 4217 flow [2024-06-27 22:06:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:14,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:06:14,043 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1589226374, now seen corresponding path program 2 times [2024-06-27 22:06:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838544348] [2024-06-27 22:06:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:15,208 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 22:06:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838544348] [2024-06-27 22:06:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838544348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567727968] [2024-06-27 22:06:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:15,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:15,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:15,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 304 transitions, 4217 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:15,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:15,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:17,007 INFO L124 PetriNetUnfolderBase]: 5877/9247 cut-off events. [2024-06-27 22:06:17,007 INFO L125 PetriNetUnfolderBase]: For 212520/212526 co-relation queries the response was YES. [2024-06-27 22:06:17,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55745 conditions, 9247 events. 5877/9247 cut-off events. For 212520/212526 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 59016 event pairs, 1040 based on Foata normal form. 5/9086 useless extension candidates. Maximal degree in co-relation 55679. Up to 6721 conditions per place. [2024-06-27 22:06:17,100 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 209 selfloop transitions, 141 changer transitions 0/360 dead transitions. [2024-06-27 22:06:17,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 360 transitions, 5263 flow [2024-06-27 22:06:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:06:17,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:06:17,102 INFO L175 Difference]: Start difference. First operand has 188 places, 304 transitions, 4217 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:06:17,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 360 transitions, 5263 flow [2024-06-27 22:06:17,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 360 transitions, 4963 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:17,455 INFO L231 Difference]: Finished difference. Result has 190 places, 307 transitions, 4272 flow [2024-06-27 22:06:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4272, PETRI_PLACES=190, PETRI_TRANSITIONS=307} [2024-06-27 22:06:17,455 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 22:06:17,456 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 307 transitions, 4272 flow [2024-06-27 22:06:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:17,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:06:17,456 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:17,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1821771438, now seen corresponding path program 3 times [2024-06-27 22:06:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426030932] [2024-06-27 22:06:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:18,650 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 22:06:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426030932] [2024-06-27 22:06:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426030932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:18,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320224383] [2024-06-27 22:06:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:18,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:18,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:18,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 307 transitions, 4272 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:18,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:18,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:18,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:20,464 INFO L124 PetriNetUnfolderBase]: 6162/9599 cut-off events. [2024-06-27 22:06:20,464 INFO L125 PetriNetUnfolderBase]: For 241601/241607 co-relation queries the response was YES. [2024-06-27 22:06:20,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59478 conditions, 9599 events. 6162/9599 cut-off events. For 241601/241607 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 61222 event pairs, 1138 based on Foata normal form. 5/9462 useless extension candidates. Maximal degree in co-relation 59411. Up to 6166 conditions per place. [2024-06-27 22:06:20,575 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 208 selfloop transitions, 147 changer transitions 0/365 dead transitions. [2024-06-27 22:06:20,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 365 transitions, 5470 flow [2024-06-27 22:06:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:06:20,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-27 22:06:20,577 INFO L175 Difference]: Start difference. First operand has 190 places, 307 transitions, 4272 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:06:20,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 365 transitions, 5470 flow [2024-06-27 22:06:20,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 365 transitions, 5145 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:20,962 INFO L231 Difference]: Finished difference. Result has 193 places, 313 transitions, 4452 flow [2024-06-27 22:06:20,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4452, PETRI_PLACES=193, PETRI_TRANSITIONS=313} [2024-06-27 22:06:20,963 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 22:06:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 313 transitions, 4452 flow [2024-06-27 22:06:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:20,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:20,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:06:20,964 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:20,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1840820592, now seen corresponding path program 4 times [2024-06-27 22:06:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697887590] [2024-06-27 22:06:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:22,011 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 22:06:22,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:22,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697887590] [2024-06-27 22:06:22,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697887590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:22,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579953479] [2024-06-27 22:06:22,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:22,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:22,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:22,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:22,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 313 transitions, 4452 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:22,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:22,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:22,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:24,060 INFO L124 PetriNetUnfolderBase]: 6312/10081 cut-off events. [2024-06-27 22:06:24,060 INFO L125 PetriNetUnfolderBase]: For 274165/274171 co-relation queries the response was YES. [2024-06-27 22:06:24,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63950 conditions, 10081 events. 6312/10081 cut-off events. For 274165/274171 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 66552 event pairs, 1255 based on Foata normal form. 5/9897 useless extension candidates. Maximal degree in co-relation 63881. Up to 7117 conditions per place. [2024-06-27 22:06:24,166 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 219 selfloop transitions, 146 changer transitions 0/375 dead transitions. [2024-06-27 22:06:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 375 transitions, 5779 flow [2024-06-27 22:06:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:06:24,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:06:24,169 INFO L175 Difference]: Start difference. First operand has 193 places, 313 transitions, 4452 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:06:24,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 375 transitions, 5779 flow [2024-06-27 22:06:24,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 375 transitions, 5580 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:24,590 INFO L231 Difference]: Finished difference. Result has 197 places, 318 transitions, 4690 flow [2024-06-27 22:06:24,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4690, PETRI_PLACES=197, PETRI_TRANSITIONS=318} [2024-06-27 22:06:24,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 22:06:24,591 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 318 transitions, 4690 flow [2024-06-27 22:06:24,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:24,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:24,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:24,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:06:24,592 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:24,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:24,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1846330842, now seen corresponding path program 5 times [2024-06-27 22:06:24,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:24,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416845954] [2024-06-27 22:06:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:25,997 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 22:06:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416845954] [2024-06-27 22:06:25,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416845954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:25,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:25,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578187672] [2024-06-27 22:06:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:25,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:26,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:26,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 318 transitions, 4690 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:26,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:26,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:26,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:28,662 INFO L124 PetriNetUnfolderBase]: 6479/10266 cut-off events. [2024-06-27 22:06:28,662 INFO L125 PetriNetUnfolderBase]: For 299913/299919 co-relation queries the response was YES. [2024-06-27 22:06:28,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67343 conditions, 10266 events. 6479/10266 cut-off events. For 299913/299919 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67349 event pairs, 1359 based on Foata normal form. 21/10127 useless extension candidates. Maximal degree in co-relation 67272. Up to 7844 conditions per place. [2024-06-27 22:06:28,788 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 242 selfloop transitions, 129 changer transitions 0/381 dead transitions. [2024-06-27 22:06:28,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 381 transitions, 5911 flow [2024-06-27 22:06:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:06:28,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:06:28,790 INFO L175 Difference]: Start difference. First operand has 197 places, 318 transitions, 4690 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:06:28,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 381 transitions, 5911 flow [2024-06-27 22:06:29,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 381 transitions, 5815 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:29,333 INFO L231 Difference]: Finished difference. Result has 204 places, 321 transitions, 4946 flow [2024-06-27 22:06:29,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4596, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4946, PETRI_PLACES=204, PETRI_TRANSITIONS=321} [2024-06-27 22:06:29,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 22:06:29,335 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 321 transitions, 4946 flow [2024-06-27 22:06:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:29,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:29,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:29,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:06:29,335 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:29,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash 955125028, now seen corresponding path program 6 times [2024-06-27 22:06:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117437072] [2024-06-27 22:06:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:29,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:30,460 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 22:06:30,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:30,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117437072] [2024-06-27 22:06:30,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117437072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:30,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:30,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:30,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595028526] [2024-06-27 22:06:30,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:30,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:30,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:30,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:30,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 321 transitions, 4946 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:30,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:30,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:30,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:32,636 INFO L124 PetriNetUnfolderBase]: 6646/10680 cut-off events. [2024-06-27 22:06:32,636 INFO L125 PetriNetUnfolderBase]: For 327237/327243 co-relation queries the response was YES. [2024-06-27 22:06:32,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71035 conditions, 10680 events. 6646/10680 cut-off events. For 327237/327243 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 71749 event pairs, 1345 based on Foata normal form. 21/10486 useless extension candidates. Maximal degree in co-relation 70962. Up to 8122 conditions per place. [2024-06-27 22:06:32,763 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 233 selfloop transitions, 135 changer transitions 0/378 dead transitions. [2024-06-27 22:06:32,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 378 transitions, 6123 flow [2024-06-27 22:06:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:06:32,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:06:32,765 INFO L175 Difference]: Start difference. First operand has 204 places, 321 transitions, 4946 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:06:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 378 transitions, 6123 flow [2024-06-27 22:06:33,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 378 transitions, 5830 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:33,512 INFO L231 Difference]: Finished difference. Result has 205 places, 324 transitions, 5019 flow [2024-06-27 22:06:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5019, PETRI_PLACES=205, PETRI_TRANSITIONS=324} [2024-06-27 22:06:33,513 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 22:06:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 324 transitions, 5019 flow [2024-06-27 22:06:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:33,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:06:33,514 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:33,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2129130642, now seen corresponding path program 1 times [2024-06-27 22:06:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411525846] [2024-06-27 22:06:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:34,272 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 22:06:34,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:34,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411525846] [2024-06-27 22:06:34,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411525846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:34,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:34,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915829358] [2024-06-27 22:06:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:34,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:34,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:34,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:34,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:34,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 324 transitions, 5019 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:34,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:34,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:34,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:36,154 INFO L124 PetriNetUnfolderBase]: 6670/11114 cut-off events. [2024-06-27 22:06:36,154 INFO L125 PetriNetUnfolderBase]: For 319843/319849 co-relation queries the response was YES. [2024-06-27 22:06:36,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71386 conditions, 11114 events. 6670/11114 cut-off events. For 319843/319849 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 77486 event pairs, 1821 based on Foata normal form. 6/10822 useless extension candidates. Maximal degree in co-relation 71312. Up to 9327 conditions per place. [2024-06-27 22:06:36,290 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 321 selfloop transitions, 67 changer transitions 0/398 dead transitions. [2024-06-27 22:06:36,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 398 transitions, 7061 flow [2024-06-27 22:06:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:06:36,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:06:36,292 INFO L175 Difference]: Start difference. First operand has 205 places, 324 transitions, 5019 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:06:36,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 398 transitions, 7061 flow [2024-06-27 22:06:36,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 398 transitions, 6448 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 22:06:37,003 INFO L231 Difference]: Finished difference. Result has 205 places, 370 transitions, 5794 flow [2024-06-27 22:06:37,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5794, PETRI_PLACES=205, PETRI_TRANSITIONS=370} [2024-06-27 22:06:37,003 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 22:06:37,003 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 370 transitions, 5794 flow [2024-06-27 22:06:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:37,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:37,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:37,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:06:37,004 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:37,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2128800988, now seen corresponding path program 1 times [2024-06-27 22:06:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337310371] [2024-06-27 22:06:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:38,177 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 22:06:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337310371] [2024-06-27 22:06:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337310371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170488057] [2024-06-27 22:06:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:38,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:38,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 370 transitions, 5794 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:06:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:40,042 INFO L124 PetriNetUnfolderBase]: 6367/10805 cut-off events. [2024-06-27 22:06:40,043 INFO L125 PetriNetUnfolderBase]: For 302762/302787 co-relation queries the response was YES. [2024-06-27 22:06:40,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68178 conditions, 10805 events. 6367/10805 cut-off events. For 302762/302787 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 77157 event pairs, 1824 based on Foata normal form. 23/10484 useless extension candidates. Maximal degree in co-relation 68100. Up to 8914 conditions per place. [2024-06-27 22:06:40,181 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 308 selfloop transitions, 32 changer transitions 0/395 dead transitions. [2024-06-27 22:06:40,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 395 transitions, 6614 flow [2024-06-27 22:06:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:06:40,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 22:06:40,182 INFO L175 Difference]: Start difference. First operand has 205 places, 370 transitions, 5794 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:06:40,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 395 transitions, 6614 flow [2024-06-27 22:06:40,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 6461 flow, removed 74 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:41,135 INFO L231 Difference]: Finished difference. Result has 212 places, 373 transitions, 5758 flow [2024-06-27 22:06:41,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5758, PETRI_PLACES=212, PETRI_TRANSITIONS=373} [2024-06-27 22:06:41,137 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 158 predicate places. [2024-06-27 22:06:41,137 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 373 transitions, 5758 flow [2024-06-27 22:06:41,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:06:41,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:41,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:06:41,138 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:41,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1472965272, now seen corresponding path program 2 times [2024-06-27 22:06:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:41,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988549454] [2024-06-27 22:06:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:41,956 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 22:06:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:41,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988549454] [2024-06-27 22:06:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988549454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495858519] [2024-06-27 22:06:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:41,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:41,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:41,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:42,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:42,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 373 transitions, 5758 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:42,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:42,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:43,819 INFO L124 PetriNetUnfolderBase]: 6743/11194 cut-off events. [2024-06-27 22:06:43,820 INFO L125 PetriNetUnfolderBase]: For 323054/323060 co-relation queries the response was YES. [2024-06-27 22:06:43,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72526 conditions, 11194 events. 6743/11194 cut-off events. For 323054/323060 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 77687 event pairs, 1837 based on Foata normal form. 6/10908 useless extension candidates. Maximal degree in co-relation 72446. Up to 9336 conditions per place. [2024-06-27 22:06:44,161 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 325 selfloop transitions, 72 changer transitions 0/407 dead transitions. [2024-06-27 22:06:44,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 407 transitions, 6959 flow [2024-06-27 22:06:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:06:44,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 22:06:44,162 INFO L175 Difference]: Start difference. First operand has 212 places, 373 transitions, 5758 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:06:44,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 407 transitions, 6959 flow [2024-06-27 22:06:44,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 407 transitions, 6870 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:44,894 INFO L231 Difference]: Finished difference. Result has 214 places, 383 transitions, 6049 flow [2024-06-27 22:06:44,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6049, PETRI_PLACES=214, PETRI_TRANSITIONS=383} [2024-06-27 22:06:44,895 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-27 22:06:44,895 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 383 transitions, 6049 flow [2024-06-27 22:06:44,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:44,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:06:44,895 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:44,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2134205956, now seen corresponding path program 7 times [2024-06-27 22:06:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652931323] [2024-06-27 22:06:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:44,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:46,262 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 22:06:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652931323] [2024-06-27 22:06:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652931323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:46,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318281077] [2024-06-27 22:06:46,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:46,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:46,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 383 transitions, 6049 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:46,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:46,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:48,797 INFO L124 PetriNetUnfolderBase]: 6910/10917 cut-off events. [2024-06-27 22:06:48,797 INFO L125 PetriNetUnfolderBase]: For 366771/366771 co-relation queries the response was YES. [2024-06-27 22:06:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76103 conditions, 10917 events. 6910/10917 cut-off events. For 366771/366771 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 72362 event pairs, 1288 based on Foata normal form. 20/10745 useless extension candidates. Maximal degree in co-relation 76021. Up to 8509 conditions per place. [2024-06-27 22:06:48,913 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 275 selfloop transitions, 170 changer transitions 0/455 dead transitions. [2024-06-27 22:06:48,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 455 transitions, 7558 flow [2024-06-27 22:06:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:06:48,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-27 22:06:48,920 INFO L175 Difference]: Start difference. First operand has 214 places, 383 transitions, 6049 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:06:48,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 455 transitions, 7558 flow [2024-06-27 22:06:49,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 455 transitions, 7378 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:49,802 INFO L231 Difference]: Finished difference. Result has 221 places, 386 transitions, 6323 flow [2024-06-27 22:06:49,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5881, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6323, PETRI_PLACES=221, PETRI_TRANSITIONS=386} [2024-06-27 22:06:49,803 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 22:06:49,803 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 386 transitions, 6323 flow [2024-06-27 22:06:49,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:49,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:49,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:49,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:06:49,803 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:49,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:49,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1142753258, now seen corresponding path program 8 times [2024-06-27 22:06:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763543761] [2024-06-27 22:06:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:51,162 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 22:06:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763543761] [2024-06-27 22:06:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763543761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:51,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974397053] [2024-06-27 22:06:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:51,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:51,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:51,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 386 transitions, 6323 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:51,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:51,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:51,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:53,810 INFO L124 PetriNetUnfolderBase]: 6874/11335 cut-off events. [2024-06-27 22:06:53,810 INFO L125 PetriNetUnfolderBase]: For 367245/367245 co-relation queries the response was YES. [2024-06-27 22:06:53,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76865 conditions, 11335 events. 6874/11335 cut-off events. For 367245/367245 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 78282 event pairs, 1380 based on Foata normal form. 20/11035 useless extension candidates. Maximal degree in co-relation 76781. Up to 8453 conditions per place. [2024-06-27 22:06:53,949 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 272 selfloop transitions, 178 changer transitions 0/460 dead transitions. [2024-06-27 22:06:53,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 460 transitions, 7733 flow [2024-06-27 22:06:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:06:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:06:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 22:06:53,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:06:53,950 INFO L175 Difference]: Start difference. First operand has 221 places, 386 transitions, 6323 flow. Second operand 11 states and 275 transitions. [2024-06-27 22:06:53,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 460 transitions, 7733 flow [2024-06-27 22:06:54,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 460 transitions, 7302 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:54,932 INFO L231 Difference]: Finished difference. Result has 224 places, 386 transitions, 6261 flow [2024-06-27 22:06:54,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6261, PETRI_PLACES=224, PETRI_TRANSITIONS=386} [2024-06-27 22:06:54,933 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 22:06:54,933 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 386 transitions, 6261 flow [2024-06-27 22:06:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:54,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:54,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:06:54,934 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2140976779, now seen corresponding path program 1 times [2024-06-27 22:06:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032264553] [2024-06-27 22:06:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:56,305 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 22:06:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032264553] [2024-06-27 22:06:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032264553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374601685] [2024-06-27 22:06:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:56,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:06:56,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 386 transitions, 6261 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:56,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:56,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:06:56,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:58,670 INFO L124 PetriNetUnfolderBase]: 6961/11417 cut-off events. [2024-06-27 22:06:58,670 INFO L125 PetriNetUnfolderBase]: For 350023/350023 co-relation queries the response was YES. [2024-06-27 22:06:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76617 conditions, 11417 events. 6961/11417 cut-off events. For 350023/350023 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 78389 event pairs, 1403 based on Foata normal form. 4/11077 useless extension candidates. Maximal degree in co-relation 76532. Up to 8741 conditions per place. [2024-06-27 22:06:58,830 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 260 selfloop transitions, 185 changer transitions 0/455 dead transitions. [2024-06-27 22:06:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 455 transitions, 7759 flow [2024-06-27 22:06:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:06:58,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 22:06:58,832 INFO L175 Difference]: Start difference. First operand has 224 places, 386 transitions, 6261 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:06:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 455 transitions, 7759 flow [2024-06-27 22:06:59,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 455 transitions, 7374 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:59,896 INFO L231 Difference]: Finished difference. Result has 226 places, 396 transitions, 6469 flow [2024-06-27 22:06:59,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6469, PETRI_PLACES=226, PETRI_TRANSITIONS=396} [2024-06-27 22:06:59,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 22:06:59,906 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 396 transitions, 6469 flow [2024-06-27 22:06:59,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:06:59,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:59,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:06:59,906 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:59,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -628991575, now seen corresponding path program 2 times [2024-06-27 22:06:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079403835] [2024-06-27 22:06:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:01,327 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 22:07:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079403835] [2024-06-27 22:07:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079403835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038369134] [2024-06-27 22:07:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:01,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:01,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:01,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 396 transitions, 6469 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:01,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:01,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:01,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:03,732 INFO L124 PetriNetUnfolderBase]: 7006/11068 cut-off events. [2024-06-27 22:07:03,733 INFO L125 PetriNetUnfolderBase]: For 365524/365524 co-relation queries the response was YES. [2024-06-27 22:07:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77686 conditions, 11068 events. 7006/11068 cut-off events. For 365524/365524 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 73426 event pairs, 1281 based on Foata normal form. 4/10871 useless extension candidates. Maximal degree in co-relation 77599. Up to 8808 conditions per place. [2024-06-27 22:07:03,887 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 277 selfloop transitions, 181 changer transitions 0/468 dead transitions. [2024-06-27 22:07:03,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 468 transitions, 8056 flow [2024-06-27 22:07:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:07:03,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 22:07:03,889 INFO L175 Difference]: Start difference. First operand has 226 places, 396 transitions, 6469 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:07:03,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 468 transitions, 8056 flow [2024-06-27 22:07:04,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 468 transitions, 7639 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:04,752 INFO L231 Difference]: Finished difference. Result has 230 places, 404 transitions, 6610 flow [2024-06-27 22:07:04,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6610, PETRI_PLACES=230, PETRI_TRANSITIONS=404} [2024-06-27 22:07:04,753 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-27 22:07:04,753 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 404 transitions, 6610 flow [2024-06-27 22:07:04,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:04,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:07:04,754 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:04,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1897490007, now seen corresponding path program 3 times [2024-06-27 22:07:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736088390] [2024-06-27 22:07:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:06,046 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 22:07:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736088390] [2024-06-27 22:07:06,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736088390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031295515] [2024-06-27 22:07:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:06,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:06,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:06,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 404 transitions, 6610 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:06,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:06,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:06,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:08,663 INFO L124 PetriNetUnfolderBase]: 7006/11523 cut-off events. [2024-06-27 22:07:08,663 INFO L125 PetriNetUnfolderBase]: For 378498/378498 co-relation queries the response was YES. [2024-06-27 22:07:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78845 conditions, 11523 events. 7006/11523 cut-off events. For 378498/378498 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 79674 event pairs, 1371 based on Foata normal form. 4/11174 useless extension candidates. Maximal degree in co-relation 78756. Up to 8808 conditions per place. [2024-06-27 22:07:08,801 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 266 selfloop transitions, 207 changer transitions 0/483 dead transitions. [2024-06-27 22:07:08,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 483 transitions, 8370 flow [2024-06-27 22:07:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:07:08,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 22:07:08,803 INFO L175 Difference]: Start difference. First operand has 230 places, 404 transitions, 6610 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:07:08,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 483 transitions, 8370 flow [2024-06-27 22:07:09,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 483 transitions, 7961 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:09,606 INFO L231 Difference]: Finished difference. Result has 235 places, 424 transitions, 7076 flow [2024-06-27 22:07:09,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6229, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7076, PETRI_PLACES=235, PETRI_TRANSITIONS=424} [2024-06-27 22:07:09,606 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 22:07:09,607 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 424 transitions, 7076 flow [2024-06-27 22:07:09,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:09,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:09,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:09,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:07:09,607 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:09,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1887966807, now seen corresponding path program 4 times [2024-06-27 22:07:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551757089] [2024-06-27 22:07:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:10,922 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 22:07:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551757089] [2024-06-27 22:07:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551757089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:10,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051250644] [2024-06-27 22:07:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:11,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:11,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 424 transitions, 7076 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:11,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:11,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:13,699 INFO L124 PetriNetUnfolderBase]: 7201/11810 cut-off events. [2024-06-27 22:07:13,700 INFO L125 PetriNetUnfolderBase]: For 419215/419215 co-relation queries the response was YES. [2024-06-27 22:07:13,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82999 conditions, 11810 events. 7201/11810 cut-off events. For 419215/419215 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 81773 event pairs, 1046 based on Foata normal form. 4/11471 useless extension candidates. Maximal degree in co-relation 82908. Up to 8446 conditions per place. [2024-06-27 22:07:13,850 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 265 selfloop transitions, 220 changer transitions 0/495 dead transitions. [2024-06-27 22:07:13,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 495 transitions, 8807 flow [2024-06-27 22:07:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:07:13,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:07:13,852 INFO L175 Difference]: Start difference. First operand has 235 places, 424 transitions, 7076 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:07:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 495 transitions, 8807 flow [2024-06-27 22:07:14,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 495 transitions, 8415 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:14,944 INFO L231 Difference]: Finished difference. Result has 241 places, 429 transitions, 7306 flow [2024-06-27 22:07:14,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6688, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7306, PETRI_PLACES=241, PETRI_TRANSITIONS=429} [2024-06-27 22:07:14,945 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-27 22:07:14,945 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 429 transitions, 7306 flow [2024-06-27 22:07:14,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:07:14,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:14,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:07:14,946 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:14,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1855769872, now seen corresponding path program 2 times [2024-06-27 22:07:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783804968] [2024-06-27 22:07:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:16,136 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 22:07:16,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783804968] [2024-06-27 22:07:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783804968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:16,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:16,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:16,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604925973] [2024-06-27 22:07:16,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:16,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:07:16,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 429 transitions, 7306 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:07:16,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:16,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:07:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:18,333 INFO L124 PetriNetUnfolderBase]: 6893/11628 cut-off events. [2024-06-27 22:07:18,333 INFO L125 PetriNetUnfolderBase]: For 421814/421852 co-relation queries the response was YES. [2024-06-27 22:07:18,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80449 conditions, 11628 events. 6893/11628 cut-off events. For 421814/421852 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 83553 event pairs, 1636 based on Foata normal form. 33/11308 useless extension candidates. Maximal degree in co-relation 80356. Up to 9643 conditions per place. [2024-06-27 22:07:18,483 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 349 selfloop transitions, 51 changer transitions 0/457 dead transitions. [2024-06-27 22:07:18,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 457 transitions, 8442 flow [2024-06-27 22:07:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:07:18,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 22:07:18,485 INFO L175 Difference]: Start difference. First operand has 241 places, 429 transitions, 7306 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:07:18,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 457 transitions, 8442 flow [2024-06-27 22:07:19,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 457 transitions, 7982 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:19,623 INFO L231 Difference]: Finished difference. Result has 242 places, 435 transitions, 7076 flow [2024-06-27 22:07:19,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6850, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7076, PETRI_PLACES=242, PETRI_TRANSITIONS=435} [2024-06-27 22:07:19,624 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 22:07:19,624 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 435 transitions, 7076 flow [2024-06-27 22:07:19,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:07:19,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:19,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:19,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:07:19,624 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:19,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:19,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1857673226, now seen corresponding path program 3 times [2024-06-27 22:07:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521071659] [2024-06-27 22:07:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521071659] [2024-06-27 22:07:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521071659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:20,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:20,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272149095] [2024-06-27 22:07:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:20,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:20,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:07:20,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 435 transitions, 7076 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:07:20,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:20,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:07:20,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:23,116 INFO L124 PetriNetUnfolderBase]: 6910/11661 cut-off events. [2024-06-27 22:07:23,117 INFO L125 PetriNetUnfolderBase]: For 423413/423451 co-relation queries the response was YES. [2024-06-27 22:07:23,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79483 conditions, 11661 events. 6910/11661 cut-off events. For 423413/423451 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 83816 event pairs, 1649 based on Foata normal form. 33/11339 useless extension candidates. Maximal degree in co-relation 79389. Up to 9704 conditions per place. [2024-06-27 22:07:23,267 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 357 selfloop transitions, 43 changer transitions 0/457 dead transitions. [2024-06-27 22:07:23,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 457 transitions, 8028 flow [2024-06-27 22:07:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 22:07:23,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-27 22:07:23,268 INFO L175 Difference]: Start difference. First operand has 242 places, 435 transitions, 7076 flow. Second operand 8 states and 182 transitions. [2024-06-27 22:07:23,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 457 transitions, 8028 flow [2024-06-27 22:07:24,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 457 transitions, 7930 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:24,488 INFO L231 Difference]: Finished difference. Result has 246 places, 438 transitions, 7138 flow [2024-06-27 22:07:24,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6982, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7138, PETRI_PLACES=246, PETRI_TRANSITIONS=438} [2024-06-27 22:07:24,488 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-27 22:07:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 438 transitions, 7138 flow [2024-06-27 22:07:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 22:07:24,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:24,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:24,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:07:24,489 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:24,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1855294208, now seen corresponding path program 3 times [2024-06-27 22:07:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833219731] [2024-06-27 22:07:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:25,459 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 22:07:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:25,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833219731] [2024-06-27 22:07:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833219731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:25,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:25,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786262568] [2024-06-27 22:07:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:25,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:25,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:25,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:25,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 438 transitions, 7138 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:25,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:25,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:25,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:27,672 INFO L124 PetriNetUnfolderBase]: 7296/12087 cut-off events. [2024-06-27 22:07:27,672 INFO L125 PetriNetUnfolderBase]: For 445474/445480 co-relation queries the response was YES. [2024-06-27 22:07:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83821 conditions, 12087 events. 7296/12087 cut-off events. For 445474/445480 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 84860 event pairs, 1681 based on Foata normal form. 6/11775 useless extension candidates. Maximal degree in co-relation 83725. Up to 10034 conditions per place. [2024-06-27 22:07:27,832 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 370 selfloop transitions, 96 changer transitions 0/476 dead transitions. [2024-06-27 22:07:27,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 476 transitions, 8747 flow [2024-06-27 22:07:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:07:27,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 22:07:27,834 INFO L175 Difference]: Start difference. First operand has 246 places, 438 transitions, 7138 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:07:27,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 476 transitions, 8747 flow [2024-06-27 22:07:29,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 476 transitions, 8625 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:29,383 INFO L231 Difference]: Finished difference. Result has 248 places, 452 transitions, 7535 flow [2024-06-27 22:07:29,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7016, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7535, PETRI_PLACES=248, PETRI_TRANSITIONS=452} [2024-06-27 22:07:29,384 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-27 22:07:29,384 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 452 transitions, 7535 flow [2024-06-27 22:07:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:29,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:29,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:07:29,385 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:29,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash -734838444, now seen corresponding path program 9 times [2024-06-27 22:07:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342564087] [2024-06-27 22:07:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:30,316 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 22:07:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342564087] [2024-06-27 22:07:30,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342564087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:30,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:30,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:30,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513440844] [2024-06-27 22:07:30,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:30,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:30,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:30,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 452 transitions, 7535 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:30,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:30,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:30,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:33,084 INFO L124 PetriNetUnfolderBase]: 8586/13923 cut-off events. [2024-06-27 22:07:33,084 INFO L125 PetriNetUnfolderBase]: For 528208/528214 co-relation queries the response was YES. [2024-06-27 22:07:33,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98603 conditions, 13923 events. 8586/13923 cut-off events. For 528208/528214 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 97483 event pairs, 1693 based on Foata normal form. 5/13654 useless extension candidates. Maximal degree in co-relation 98505. Up to 9089 conditions per place. [2024-06-27 22:07:33,282 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 341 selfloop transitions, 207 changer transitions 0/558 dead transitions. [2024-06-27 22:07:33,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 558 transitions, 9821 flow [2024-06-27 22:07:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 22:07:33,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:07:33,284 INFO L175 Difference]: Start difference. First operand has 248 places, 452 transitions, 7535 flow. Second operand 9 states and 243 transitions. [2024-06-27 22:07:33,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 558 transitions, 9821 flow [2024-06-27 22:07:35,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 558 transitions, 9593 flow, removed 86 selfloop flow, removed 2 redundant places. [2024-06-27 22:07:35,011 INFO L231 Difference]: Finished difference. Result has 256 places, 489 transitions, 8488 flow [2024-06-27 22:07:35,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8488, PETRI_PLACES=256, PETRI_TRANSITIONS=489} [2024-06-27 22:07:35,012 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-27 22:07:35,012 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 489 transitions, 8488 flow [2024-06-27 22:07:35,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:35,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:35,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:35,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:07:35,013 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:35,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash 431543272, now seen corresponding path program 10 times [2024-06-27 22:07:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:35,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553881969] [2024-06-27 22:07:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:35,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:35,962 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 22:07:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553881969] [2024-06-27 22:07:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553881969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:35,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657961934] [2024-06-27 22:07:35,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:35,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:36,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:36,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 489 transitions, 8488 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:36,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:36,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:36,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:39,149 INFO L124 PetriNetUnfolderBase]: 8759/14169 cut-off events. [2024-06-27 22:07:39,151 INFO L125 PetriNetUnfolderBase]: For 559909/559915 co-relation queries the response was YES. [2024-06-27 22:07:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102890 conditions, 14169 events. 8759/14169 cut-off events. For 559909/559915 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 99175 event pairs, 1739 based on Foata normal form. 25/13919 useless extension candidates. Maximal degree in co-relation 102789. Up to 11071 conditions per place. [2024-06-27 22:07:39,366 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 368 selfloop transitions, 183 changer transitions 0/561 dead transitions. [2024-06-27 22:07:39,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 561 transitions, 10202 flow [2024-06-27 22:07:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:07:39,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-27 22:07:39,367 INFO L175 Difference]: Start difference. First operand has 256 places, 489 transitions, 8488 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:07:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 561 transitions, 10202 flow [2024-06-27 22:07:41,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 561 transitions, 9916 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:41,232 INFO L231 Difference]: Finished difference. Result has 260 places, 498 transitions, 8780 flow [2024-06-27 22:07:41,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8214, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8780, PETRI_PLACES=260, PETRI_TRANSITIONS=498} [2024-06-27 22:07:41,233 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:07:41,233 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 498 transitions, 8780 flow [2024-06-27 22:07:41,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:41,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:41,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:41,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:07:41,234 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:41,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1211315564, now seen corresponding path program 11 times [2024-06-27 22:07:41,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:41,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388141286] [2024-06-27 22:07:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:42,577 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 22:07:42,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:42,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388141286] [2024-06-27 22:07:42,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388141286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:42,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:42,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:42,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550505136] [2024-06-27 22:07:42,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:42,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:42,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:42,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:42,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:42,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 498 transitions, 8780 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:42,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:42,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:42,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:45,991 INFO L124 PetriNetUnfolderBase]: 8827/14263 cut-off events. [2024-06-27 22:07:45,992 INFO L125 PetriNetUnfolderBase]: For 549272/549278 co-relation queries the response was YES. [2024-06-27 22:07:46,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105020 conditions, 14263 events. 8827/14263 cut-off events. For 549272/549278 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99872 event pairs, 1734 based on Foata normal form. 5/13995 useless extension candidates. Maximal degree in co-relation 104917. Up to 11043 conditions per place. [2024-06-27 22:07:46,175 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 367 selfloop transitions, 191 changer transitions 0/568 dead transitions. [2024-06-27 22:07:46,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 568 transitions, 10459 flow [2024-06-27 22:07:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 22:07:46,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-27 22:07:46,177 INFO L175 Difference]: Start difference. First operand has 260 places, 498 transitions, 8780 flow. Second operand 9 states and 242 transitions. [2024-06-27 22:07:46,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 568 transitions, 10459 flow [2024-06-27 22:07:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 568 transitions, 10031 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:48,110 INFO L231 Difference]: Finished difference. Result has 262 places, 504 transitions, 8881 flow [2024-06-27 22:07:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8352, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8881, PETRI_PLACES=262, PETRI_TRANSITIONS=504} [2024-06-27 22:07:48,110 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-27 22:07:48,110 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 504 transitions, 8881 flow [2024-06-27 22:07:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:07:48,111 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:48,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash -923486424, now seen corresponding path program 12 times [2024-06-27 22:07:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280325233] [2024-06-27 22:07:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:48,966 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 22:07:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280325233] [2024-06-27 22:07:48,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280325233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:48,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:48,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716905225] [2024-06-27 22:07:48,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:49,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:07:49,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 504 transitions, 8881 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 22:07:49,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:49,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:07:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:52,529 INFO L124 PetriNetUnfolderBase]: 8409/14574 cut-off events. [2024-06-27 22:07:52,529 INFO L125 PetriNetUnfolderBase]: For 602995/603966 co-relation queries the response was YES. [2024-06-27 22:07:52,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106181 conditions, 14574 events. 8409/14574 cut-off events. For 602995/603966 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 113500 event pairs, 1119 based on Foata normal form. 431/14263 useless extension candidates. Maximal degree in co-relation 106077. Up to 6064 conditions per place. [2024-06-27 22:07:52,725 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 324 selfloop transitions, 206 changer transitions 0/618 dead transitions. [2024-06-27 22:07:52,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 618 transitions, 11496 flow [2024-06-27 22:07:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-06-27 22:07:52,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-06-27 22:07:52,727 INFO L175 Difference]: Start difference. First operand has 262 places, 504 transitions, 8881 flow. Second operand 8 states and 230 transitions. [2024-06-27 22:07:52,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 618 transitions, 11496 flow [2024-06-27 22:07:54,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 618 transitions, 11056 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:54,660 INFO L231 Difference]: Finished difference. Result has 264 places, 529 transitions, 9463 flow [2024-06-27 22:07:54,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8441, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9463, PETRI_PLACES=264, PETRI_TRANSITIONS=529} [2024-06-27 22:07:54,661 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 210 predicate places. [2024-06-27 22:07:54,661 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 529 transitions, 9463 flow [2024-06-27 22:07:54,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 22:07:54,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:54,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:07:54,662 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 339222698, now seen corresponding path program 4 times [2024-06-27 22:07:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458268159] [2024-06-27 22:07:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:55,412 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 22:07:55,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458268159] [2024-06-27 22:07:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458268159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:55,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:55,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249575760] [2024-06-27 22:07:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:55,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:55,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 529 transitions, 9463 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:55,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:55,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:55,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:59,102 INFO L124 PetriNetUnfolderBase]: 10073/16539 cut-off events. [2024-06-27 22:07:59,103 INFO L125 PetriNetUnfolderBase]: For 642653/642665 co-relation queries the response was YES. [2024-06-27 22:07:59,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121562 conditions, 16539 events. 10073/16539 cut-off events. For 642653/642665 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 121796 event pairs, 2599 based on Foata normal form. 12/16216 useless extension candidates. Maximal degree in co-relation 121456. Up to 14361 conditions per place. [2024-06-27 22:07:59,327 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 489 selfloop transitions, 90 changer transitions 0/589 dead transitions. [2024-06-27 22:07:59,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 589 transitions, 11277 flow [2024-06-27 22:07:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:07:59,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 22:07:59,329 INFO L175 Difference]: Start difference. First operand has 264 places, 529 transitions, 9463 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:07:59,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 589 transitions, 11277 flow [2024-06-27 22:08:02,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 589 transitions, 10989 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:02,039 INFO L231 Difference]: Finished difference. Result has 270 places, 557 transitions, 10063 flow [2024-06-27 22:08:02,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9218, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10063, PETRI_PLACES=270, PETRI_TRANSITIONS=557} [2024-06-27 22:08:02,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-27 22:08:02,040 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 557 transitions, 10063 flow [2024-06-27 22:08:02,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:02,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:02,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:08:02,041 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 517047178, now seen corresponding path program 13 times [2024-06-27 22:08:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795685668] [2024-06-27 22:08:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:03,046 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 22:08:03,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:03,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795685668] [2024-06-27 22:08:03,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795685668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:03,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:03,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:03,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464493852] [2024-06-27 22:08:03,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:03,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:03,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:03,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:03,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:03,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:03,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 557 transitions, 10063 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:03,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:03,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:03,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:07,671 INFO L124 PetriNetUnfolderBase]: 10918/17711 cut-off events. [2024-06-27 22:08:07,671 INFO L125 PetriNetUnfolderBase]: For 688780/688790 co-relation queries the response was YES. [2024-06-27 22:08:07,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127983 conditions, 17711 events. 10918/17711 cut-off events. For 688780/688790 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 129722 event pairs, 2330 based on Foata normal form. 9/17417 useless extension candidates. Maximal degree in co-relation 127873. Up to 13582 conditions per place. [2024-06-27 22:08:08,081 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 426 selfloop transitions, 216 changer transitions 0/652 dead transitions. [2024-06-27 22:08:08,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 652 transitions, 12499 flow [2024-06-27 22:08:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 22:08:08,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:08:08,088 INFO L175 Difference]: Start difference. First operand has 270 places, 557 transitions, 10063 flow. Second operand 9 states and 246 transitions. [2024-06-27 22:08:08,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 652 transitions, 12499 flow [2024-06-27 22:08:09,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 652 transitions, 12396 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 22:08:09,890 INFO L231 Difference]: Finished difference. Result has 278 places, 584 transitions, 10996 flow [2024-06-27 22:08:09,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9964, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10996, PETRI_PLACES=278, PETRI_TRANSITIONS=584} [2024-06-27 22:08:09,890 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 22:08:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 584 transitions, 10996 flow [2024-06-27 22:08:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:09,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:09,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:09,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:08:09,891 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 522557428, now seen corresponding path program 14 times [2024-06-27 22:08:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903346555] [2024-06-27 22:08:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:11,190 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 22:08:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903346555] [2024-06-27 22:08:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903346555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583869262] [2024-06-27 22:08:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:11,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:11,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 584 transitions, 10996 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:11,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:11,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:11,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:16,080 INFO L124 PetriNetUnfolderBase]: 11226/18306 cut-off events. [2024-06-27 22:08:16,080 INFO L125 PetriNetUnfolderBase]: For 761349/761355 co-relation queries the response was YES. [2024-06-27 22:08:16,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135244 conditions, 18306 events. 11226/18306 cut-off events. For 761349/761355 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 135770 event pairs, 2460 based on Foata normal form. 21/17976 useless extension candidates. Maximal degree in co-relation 135132. Up to 14786 conditions per place. [2024-06-27 22:08:16,497 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 461 selfloop transitions, 190 changer transitions 0/661 dead transitions. [2024-06-27 22:08:16,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 661 transitions, 12967 flow [2024-06-27 22:08:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-27 22:08:16,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 22:08:16,499 INFO L175 Difference]: Start difference. First operand has 278 places, 584 transitions, 10996 flow. Second operand 10 states and 265 transitions. [2024-06-27 22:08:16,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 661 transitions, 12967 flow [2024-06-27 22:08:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 661 transitions, 12747 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:19,118 INFO L231 Difference]: Finished difference. Result has 284 places, 590 transitions, 11341 flow [2024-06-27 22:08:19,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10780, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11341, PETRI_PLACES=284, PETRI_TRANSITIONS=590} [2024-06-27 22:08:19,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 22:08:19,119 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 590 transitions, 11341 flow [2024-06-27 22:08:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 22:08:19,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:19,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:08:19,120 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:19,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1320658318, now seen corresponding path program 15 times [2024-06-27 22:08:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569529945] [2024-06-27 22:08:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:20,125 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 22:08:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569529945] [2024-06-27 22:08:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569529945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:20,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:20,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:08:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357575655] [2024-06-27 22:08:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:08:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:08:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:08:20,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:20,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 590 transitions, 11341 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:20,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:20,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:20,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:24,835 INFO L124 PetriNetUnfolderBase]: 11190/18161 cut-off events. [2024-06-27 22:08:24,835 INFO L125 PetriNetUnfolderBase]: For 755442/755452 co-relation queries the response was YES. [2024-06-27 22:08:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135222 conditions, 18161 events. 11190/18161 cut-off events. For 755442/755452 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 133791 event pairs, 2413 based on Foata normal form. 25/17873 useless extension candidates. Maximal degree in co-relation 135108. Up to 14730 conditions per place. [2024-06-27 22:08:25,134 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 447 selfloop transitions, 199 changer transitions 0/656 dead transitions. [2024-06-27 22:08:25,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 656 transitions, 13130 flow [2024-06-27 22:08:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 22:08:25,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-27 22:08:25,135 INFO L175 Difference]: Start difference. First operand has 284 places, 590 transitions, 11341 flow. Second operand 9 states and 242 transitions. [2024-06-27 22:08:25,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 656 transitions, 13130 flow [2024-06-27 22:08:28,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 656 transitions, 12756 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:28,302 INFO L231 Difference]: Finished difference. Result has 287 places, 590 transitions, 11379 flow [2024-06-27 22:08:28,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10967, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11379, PETRI_PLACES=287, PETRI_TRANSITIONS=590} [2024-06-27 22:08:28,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-27 22:08:28,302 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 590 transitions, 11379 flow [2024-06-27 22:08:28,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:28,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:28,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:08:28,303 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:08:28,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1955288340, now seen corresponding path program 5 times [2024-06-27 22:08:28,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725073003] [2024-06-27 22:08:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:29,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:29,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725073003] [2024-06-27 22:08:29,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725073003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:29,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:29,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:08:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399627371] [2024-06-27 22:08:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:08:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:08:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:08:29,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:08:29,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 590 transitions, 11379 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:29,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:29,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:08:29,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand