./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:48:06,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:48:06,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:48:06,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:48:06,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:48:06,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:48:06,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:48:06,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:48:06,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:48:06,341 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:48:06,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:48:06,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:48:06,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:48:06,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:48:06,344 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:48:06,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:48:06,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:48:06,345 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:48:06,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:48:06,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:48:06,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:48:06,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:48:06,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:48:06,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:48:06,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:48:06,347 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:48:06,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:48:06,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:48:06,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:48:06,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:48:06,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:48:06,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:48:06,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:48:06,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:48:06,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:48:06,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:48:06,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:48:06,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:48:06,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:48:06,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:48:06,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:48:06,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:48:06,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:48:06,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:48:06,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:48:06,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:48:06,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:48:06,629 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:48:06,629 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:48:06,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_rmo.oepc.yml/witness.yml [2024-06-27 22:48:06,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:48:06,733 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:48:06,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i [2024-06-27 22:48:07,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:48:08,006 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:48:08,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i [2024-06-27 22:48:08,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142d6e095/a78a7b10761e4e66b51fd80aee4b522f/FLAGb09363bbb [2024-06-27 22:48:08,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142d6e095/a78a7b10761e4e66b51fd80aee4b522f [2024-06-27 22:48:08,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:48:08,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:48:08,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:48:08,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:48:08,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:48:08,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:48:06" (1/2) ... [2024-06-27 22:48:08,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6b81f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:48:08, skipping insertion in model container [2024-06-27 22:48:08,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:48:06" (1/2) ... [2024-06-27 22:48:08,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b2888f3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:48:08, skipping insertion in model container [2024-06-27 22:48:08,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:48:08" (2/2) ... [2024-06-27 22:48:08,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6b81f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08, skipping insertion in model container [2024-06-27 22:48:08,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:48:08" (2/2) ... [2024-06-27 22:48:08,058 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:48:08,088 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:48:08,090 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:48:08,090 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:48:08,090 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:48:08,091 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:48:08,091 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-27 22:48:08,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:48:08,304 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/safe014_rmo.oepc.i[993,1006] [2024-06-27 22:48:08,529 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:48:08,539 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:48:08,570 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/safe014_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:48:08,739 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:48:08,789 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:48:08,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08 WrapperNode [2024-06-27 22:48:08,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:48:08,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:48:08,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:48:08,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:48:08,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,883 INFO L138 Inliner]: procedures = 175, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2024-06-27 22:48:08,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:48:08,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:48:08,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:48:08,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:48:08,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,961 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:48:08,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:08,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:09,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:48:09,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:48:09,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:48:09,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:48:09,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (1/1) ... [2024-06-27 22:48:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:48:09,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:48:09,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:48:09,062 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 22:48:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:48:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:48:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:48:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:48:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:48:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:48:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:48:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:48:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:48:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:48:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:48:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:48:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:48:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:48:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:48:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:48:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:48:09,089 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 22:48:09,241 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:48:09,243 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:48:09,893 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:48:09,893 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:48:10,215 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:48:10,218 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:48:10,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:48:10 BoogieIcfgContainer [2024-06-27 22:48:10,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:48:10,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:48:10,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:48:10,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:48:10,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:48:06" (1/4) ... [2024-06-27 22:48:10,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476cf36f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:48:10, skipping insertion in model container [2024-06-27 22:48:10,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:48:08" (2/4) ... [2024-06-27 22:48:10,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476cf36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:48:10, skipping insertion in model container [2024-06-27 22:48:10,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:48:08" (3/4) ... [2024-06-27 22:48:10,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476cf36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:48:10, skipping insertion in model container [2024-06-27 22:48:10,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:48:10" (4/4) ... [2024-06-27 22:48:10,229 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_rmo.oepc.i [2024-06-27 22:48:10,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:48:10,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:48:10,260 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:48:10,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:48:10,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:48:10,412 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:48:10,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:48:10,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:48:10,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:48:10,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:48:10,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:48:10,446 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;@18abb20f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:48:10,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:48:10,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:48:10,453 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:48:10,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:48:10,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:10,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:48:10,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:10,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 508346512, now seen corresponding path program 1 times [2024-06-27 22:48:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953760801] [2024-06-27 22:48:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:12,748 INFO 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 22:48:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953760801] [2024-06-27 22:48:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953760801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:12,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:12,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:48:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435135173] [2024-06-27 22:48:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:12,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:48:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:48:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:48:12,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:48:12,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 22:48:12,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:12,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:48:12,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:13,643 INFO L124 PetriNetUnfolderBase]: 2180/3287 cut-off events. [2024-06-27 22:48:13,643 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:48:13,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 3287 events. 2180/3287 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17543 event pairs, 1127 based on Foata normal form. 0/3154 useless extension candidates. Maximal degree in co-relation 6528. Up to 3182 conditions per place. [2024-06-27 22:48:13,666 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 45 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:48:13,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 231 flow [2024-06-27 22:48:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:48:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:48:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 22:48:13,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:48:13,679 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 94 transitions. [2024-06-27 22:48:13,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 231 flow [2024-06-27 22:48:13,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:13,684 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 118 flow [2024-06-27 22:48:13,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 22:48:13,689 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:48:13,689 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 118 flow [2024-06-27 22:48:13,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 22:48:13,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:13,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:13,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:48:13,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:13,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1105230449, now seen corresponding path program 1 times [2024-06-27 22:48:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:13,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736535763] [2024-06-27 22:48:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:13,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:16,239 INFO 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 22:48:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736535763] [2024-06-27 22:48:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736535763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:16,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:16,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:48:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151628130] [2024-06-27 22:48:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:16,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:48:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:48:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:48:16,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:48:16,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:16,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:16,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:48:16,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:17,060 INFO L124 PetriNetUnfolderBase]: 2174/3279 cut-off events. [2024-06-27 22:48:17,061 INFO L125 PetriNetUnfolderBase]: For 547/557 co-relation queries the response was YES. [2024-06-27 22:48:17,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 3279 events. 2174/3279 cut-off events. For 547/557 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17504 event pairs, 849 based on Foata normal form. 6/3279 useless extension candidates. Maximal degree in co-relation 7291. Up to 3142 conditions per place. [2024-06-27 22:48:17,084 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-06-27 22:48:17,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 330 flow [2024-06-27 22:48:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:48:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:48:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:48:17,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-27 22:48:17,089 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 118 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:48:17,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 330 flow [2024-06-27 22:48:17,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:17,094 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 154 flow [2024-06-27 22:48:17,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:48:17,097 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-06-27 22:48:17,097 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 154 flow [2024-06-27 22:48:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:17,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:17,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:17,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:48:17,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:17,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash -699610891, now seen corresponding path program 1 times [2024-06-27 22:48:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:17,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976071836] [2024-06-27 22:48:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:21,045 INFO 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 22:48:21,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976071836] [2024-06-27 22:48:21,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976071836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:21,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:21,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:48:21,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375640635] [2024-06-27 22:48:21,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:21,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:48:21,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:48:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:48:21,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:48:21,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:21,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:21,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:48:21,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:22,106 INFO L124 PetriNetUnfolderBase]: 2769/4114 cut-off events. [2024-06-27 22:48:22,106 INFO L125 PetriNetUnfolderBase]: For 1777/1797 co-relation queries the response was YES. [2024-06-27 22:48:22,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 4114 events. 2769/4114 cut-off events. For 1777/1797 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21747 event pairs, 665 based on Foata normal form. 12/4117 useless extension candidates. Maximal degree in co-relation 9975. Up to 3890 conditions per place. [2024-06-27 22:48:22,133 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-06-27 22:48:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 108 transitions, 502 flow [2024-06-27 22:48:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:48:22,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:48:22,136 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 154 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:48:22,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 108 transitions, 502 flow [2024-06-27 22:48:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 482 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:22,140 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 197 flow [2024-06-27 22:48:22,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 22:48:22,141 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-06-27 22:48:22,141 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 197 flow [2024-06-27 22:48:22,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:22,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:22,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:22,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:48:22,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:22,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1553680373, now seen corresponding path program 1 times [2024-06-27 22:48:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:22,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639854748] [2024-06-27 22:48:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:24,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639854748] [2024-06-27 22:48:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639854748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:24,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:48:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653794316] [2024-06-27 22:48:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:48:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:48:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:48:24,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:24,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 22:48:24,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:24,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:24,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:26,065 INFO L124 PetriNetUnfolderBase]: 3305/4852 cut-off events. [2024-06-27 22:48:26,066 INFO L125 PetriNetUnfolderBase]: For 3590/3593 co-relation queries the response was YES. [2024-06-27 22:48:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 4852 events. 3305/4852 cut-off events. For 3590/3593 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25546 event pairs, 931 based on Foata normal form. 6/4849 useless extension candidates. Maximal degree in co-relation 12637. Up to 4613 conditions per place. [2024-06-27 22:48:26,100 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 73 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-27 22:48:26,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 508 flow [2024-06-27 22:48:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:48:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:48:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 22:48:26,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-06-27 22:48:26,102 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 197 flow. Second operand 5 states and 129 transitions. [2024-06-27 22:48:26,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 508 flow [2024-06-27 22:48:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 473 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:26,112 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 271 flow [2024-06-27 22:48:26,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 22:48:26,113 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-27 22:48:26,113 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 271 flow [2024-06-27 22:48:26,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 22:48:26,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:26,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:26,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:48:26,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:26,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash 944417166, now seen corresponding path program 1 times [2024-06-27 22:48:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245986924] [2024-06-27 22:48:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:28,317 INFO 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 22:48:28,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:28,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245986924] [2024-06-27 22:48:28,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245986924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:28,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:48:28,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484926105] [2024-06-27 22:48:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:28,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:48:28,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:28,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:48:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:48:28,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:28,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 22:48:28,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:28,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:29,597 INFO L124 PetriNetUnfolderBase]: 3295/4860 cut-off events. [2024-06-27 22:48:29,597 INFO L125 PetriNetUnfolderBase]: For 4932/4947 co-relation queries the response was YES. [2024-06-27 22:48:29,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13810 conditions, 4860 events. 3295/4860 cut-off events. For 4932/4947 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25804 event pairs, 963 based on Foata normal form. 14/4867 useless extension candidates. Maximal degree in co-relation 13788. Up to 4605 conditions per place. [2024-06-27 22:48:29,633 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 73 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-27 22:48:29,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 524 flow [2024-06-27 22:48:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:48:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:48:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 22:48:29,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 22:48:29,640 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 271 flow. Second operand 5 states and 127 transitions. [2024-06-27 22:48:29,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 524 flow [2024-06-27 22:48:29,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 92 transitions, 522 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:48:29,649 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 308 flow [2024-06-27 22:48:29,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 22:48:29,651 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-27 22:48:29,651 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 308 flow [2024-06-27 22:48:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 22:48:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:29,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:48:29,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:29,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -840400327, now seen corresponding path program 1 times [2024-06-27 22:48:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018835845] [2024-06-27 22:48:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:32,517 INFO 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 22:48:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:32,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018835845] [2024-06-27 22:48:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018835845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:32,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:32,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:32,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001793601] [2024-06-27 22:48:32,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:32,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:32,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:32,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:32,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:34,507 INFO L124 PetriNetUnfolderBase]: 3777/5656 cut-off events. [2024-06-27 22:48:34,507 INFO L125 PetriNetUnfolderBase]: For 6887/6893 co-relation queries the response was YES. [2024-06-27 22:48:34,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16439 conditions, 5656 events. 3777/5656 cut-off events. For 6887/6893 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31324 event pairs, 924 based on Foata normal form. 11/5664 useless extension candidates. Maximal degree in co-relation 16412. Up to 4928 conditions per place. [2024-06-27 22:48:34,539 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 130 selfloop transitions, 56 changer transitions 0/193 dead transitions. [2024-06-27 22:48:34,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 193 transitions, 1191 flow [2024-06-27 22:48:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 22:48:34,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 22:48:34,543 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 308 flow. Second operand 10 states and 257 transitions. [2024-06-27 22:48:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 193 transitions, 1191 flow [2024-06-27 22:48:34,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 193 transitions, 1171 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:34,556 INFO L231 Difference]: Finished difference. Result has 80 places, 115 transitions, 760 flow [2024-06-27 22:48:34,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=760, PETRI_PLACES=80, PETRI_TRANSITIONS=115} [2024-06-27 22:48:34,559 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-06-27 22:48:34,560 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 115 transitions, 760 flow [2024-06-27 22:48:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:34,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:34,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:48:34,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:34,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1347121253, now seen corresponding path program 2 times [2024-06-27 22:48:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:34,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515098663] [2024-06-27 22:48:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515098663] [2024-06-27 22:48:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515098663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:39,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340941064] [2024-06-27 22:48:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:39,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:39,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:39,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:39,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 115 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:39,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:39,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:39,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:41,163 INFO L124 PetriNetUnfolderBase]: 4101/6129 cut-off events. [2024-06-27 22:48:41,164 INFO L125 PetriNetUnfolderBase]: For 14587/14598 co-relation queries the response was YES. [2024-06-27 22:48:41,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22437 conditions, 6129 events. 4101/6129 cut-off events. For 14587/14598 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34166 event pairs, 888 based on Foata normal form. 7/6128 useless extension candidates. Maximal degree in co-relation 22403. Up to 5398 conditions per place. [2024-06-27 22:48:41,211 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 153 selfloop transitions, 60 changer transitions 0/220 dead transitions. [2024-06-27 22:48:41,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 220 transitions, 1708 flow [2024-06-27 22:48:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 22:48:41,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-27 22:48:41,213 INFO L175 Difference]: Start difference. First operand has 80 places, 115 transitions, 760 flow. Second operand 8 states and 213 transitions. [2024-06-27 22:48:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 220 transitions, 1708 flow [2024-06-27 22:48:41,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 220 transitions, 1686 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:41,238 INFO L231 Difference]: Finished difference. Result has 89 places, 146 transitions, 1181 flow [2024-06-27 22:48:41,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2024-06-27 22:48:41,239 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 22:48:41,239 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1181 flow [2024-06-27 22:48:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:41,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:41,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:41,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:48:41,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:41,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1120295207, now seen corresponding path program 3 times [2024-06-27 22:48:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369496680] [2024-06-27 22:48:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369496680] [2024-06-27 22:48:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369496680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653808772] [2024-06-27 22:48:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:45,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:45,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:45,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1181 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:45,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:45,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:46,905 INFO L124 PetriNetUnfolderBase]: 4297/6356 cut-off events. [2024-06-27 22:48:46,905 INFO L125 PetriNetUnfolderBase]: For 21882/21891 co-relation queries the response was YES. [2024-06-27 22:48:46,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26054 conditions, 6356 events. 4297/6356 cut-off events. For 21882/21891 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 34422 event pairs, 956 based on Foata normal form. 4/6344 useless extension candidates. Maximal degree in co-relation 26015. Up to 5479 conditions per place. [2024-06-27 22:48:46,954 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 193 selfloop transitions, 60 changer transitions 0/260 dead transitions. [2024-06-27 22:48:46,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 260 transitions, 2403 flow [2024-06-27 22:48:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 22:48:46,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-27 22:48:46,956 INFO L175 Difference]: Start difference. First operand has 89 places, 146 transitions, 1181 flow. Second operand 7 states and 189 transitions. [2024-06-27 22:48:46,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 260 transitions, 2403 flow [2024-06-27 22:48:46,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 260 transitions, 2375 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-27 22:48:47,001 INFO L231 Difference]: Finished difference. Result has 99 places, 187 transitions, 1793 flow [2024-06-27 22:48:47,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1793, PETRI_PLACES=99, PETRI_TRANSITIONS=187} [2024-06-27 22:48:47,003 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-27 22:48:47,003 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 187 transitions, 1793 flow [2024-06-27 22:48:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:47,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:47,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:47,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:48:47,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1320663707, now seen corresponding path program 4 times [2024-06-27 22:48:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234076293] [2024-06-27 22:48:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:51,239 INFO 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 22:48:51,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234076293] [2024-06-27 22:48:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234076293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:51,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937025570] [2024-06-27 22:48:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:51,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:51,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:51,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 187 transitions, 1793 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:51,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:51,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:51,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:53,210 INFO L124 PetriNetUnfolderBase]: 4292/6323 cut-off events. [2024-06-27 22:48:53,211 INFO L125 PetriNetUnfolderBase]: For 29489/29507 co-relation queries the response was YES. [2024-06-27 22:48:53,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28648 conditions, 6323 events. 4292/6323 cut-off events. For 29489/29507 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33833 event pairs, 958 based on Foata normal form. 5/6303 useless extension candidates. Maximal degree in co-relation 28601. Up to 5476 conditions per place. [2024-06-27 22:48:53,260 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 177 selfloop transitions, 74 changer transitions 0/258 dead transitions. [2024-06-27 22:48:53,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 258 transitions, 2674 flow [2024-06-27 22:48:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 22:48:53,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-06-27 22:48:53,263 INFO L175 Difference]: Start difference. First operand has 99 places, 187 transitions, 1793 flow. Second operand 7 states and 184 transitions. [2024-06-27 22:48:53,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 258 transitions, 2674 flow [2024-06-27 22:48:53,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 258 transitions, 2637 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:53,315 INFO L231 Difference]: Finished difference. Result has 108 places, 200 transitions, 2157 flow [2024-06-27 22:48:53,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2157, PETRI_PLACES=108, PETRI_TRANSITIONS=200} [2024-06-27 22:48:53,317 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 57 predicate places. [2024-06-27 22:48:53,317 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 200 transitions, 2157 flow [2024-06-27 22:48:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:53,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:53,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:48:53,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:53,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash 264461273, now seen corresponding path program 5 times [2024-06-27 22:48:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:53,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398919245] [2024-06-27 22:48:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:55,346 INFO 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 22:48:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398919245] [2024-06-27 22:48:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398919245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:55,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15721583] [2024-06-27 22:48:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:55,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:55,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:55,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 200 transitions, 2157 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:57,482 INFO L124 PetriNetUnfolderBase]: 5242/7858 cut-off events. [2024-06-27 22:48:57,482 INFO L125 PetriNetUnfolderBase]: For 42048/42048 co-relation queries the response was YES. [2024-06-27 22:48:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37497 conditions, 7858 events. 5242/7858 cut-off events. For 42048/42048 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 44680 event pairs, 973 based on Foata normal form. 11/7866 useless extension candidates. Maximal degree in co-relation 37443. Up to 5749 conditions per place. [2024-06-27 22:48:57,545 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 192 selfloop transitions, 171 changer transitions 0/370 dead transitions. [2024-06-27 22:48:57,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 370 transitions, 4324 flow [2024-06-27 22:48:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-27 22:48:57,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-06-27 22:48:57,548 INFO L175 Difference]: Start difference. First operand has 108 places, 200 transitions, 2157 flow. Second operand 10 states and 266 transitions. [2024-06-27 22:48:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 370 transitions, 4324 flow [2024-06-27 22:48:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 370 transitions, 4287 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:57,766 INFO L231 Difference]: Finished difference. Result has 120 places, 274 transitions, 3537 flow [2024-06-27 22:48:57,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3537, PETRI_PLACES=120, PETRI_TRANSITIONS=274} [2024-06-27 22:48:57,766 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-27 22:48:57,767 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 274 transitions, 3537 flow [2024-06-27 22:48:57,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:48:57,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:57,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:57,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:48:57,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:57,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1741839443, now seen corresponding path program 6 times [2024-06-27 22:48:57,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:57,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996069219] [2024-06-27 22:48:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:57,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:00,281 INFO 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 22:49:00,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:00,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996069219] [2024-06-27 22:49:00,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996069219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:00,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:00,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:00,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846770758] [2024-06-27 22:49:00,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:00,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:00,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:00,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 274 transitions, 3537 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:49:00,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:00,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:00,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:02,850 INFO L124 PetriNetUnfolderBase]: 5394/8031 cut-off events. [2024-06-27 22:49:02,850 INFO L125 PetriNetUnfolderBase]: For 60416/60416 co-relation queries the response was YES. [2024-06-27 22:49:02,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44940 conditions, 8031 events. 5394/8031 cut-off events. For 60416/60416 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 45291 event pairs, 1071 based on Foata normal form. 2/8024 useless extension candidates. Maximal degree in co-relation 44880. Up to 6757 conditions per place. [2024-06-27 22:49:02,913 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 257 selfloop transitions, 139 changer transitions 0/403 dead transitions. [2024-06-27 22:49:02,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 403 transitions, 5412 flow [2024-06-27 22:49:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 22:49:02,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-27 22:49:02,918 INFO L175 Difference]: Start difference. First operand has 120 places, 274 transitions, 3537 flow. Second operand 10 states and 243 transitions. [2024-06-27 22:49:02,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 403 transitions, 5412 flow [2024-06-27 22:49:03,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 403 transitions, 5272 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:03,051 INFO L231 Difference]: Finished difference. Result has 128 places, 326 transitions, 4528 flow [2024-06-27 22:49:03,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4528, PETRI_PLACES=128, PETRI_TRANSITIONS=326} [2024-06-27 22:49:03,052 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 77 predicate places. [2024-06-27 22:49:03,052 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 326 transitions, 4528 flow [2024-06-27 22:49:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 22:49:03,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:03,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:03,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:49:03,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:03,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:03,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1346828141, now seen corresponding path program 1 times [2024-06-27 22:49:03,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:03,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574728486] [2024-06-27 22:49:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:03,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:05,427 INFO 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 22:49:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574728486] [2024-06-27 22:49:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574728486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:05,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:49:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792722536] [2024-06-27 22:49:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:49:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:49:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:49:05,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:05,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 326 transitions, 4528 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 22:49:05,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:05,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:07,268 INFO L124 PetriNetUnfolderBase]: 5436/8169 cut-off events. [2024-06-27 22:49:07,268 INFO L125 PetriNetUnfolderBase]: For 67301/67411 co-relation queries the response was YES. [2024-06-27 22:49:07,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47260 conditions, 8169 events. 5436/8169 cut-off events. For 67301/67411 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 47049 event pairs, 970 based on Foata normal form. 88/8243 useless extension candidates. Maximal degree in co-relation 47196. Up to 7208 conditions per place. [2024-06-27 22:49:07,331 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 316 selfloop transitions, 60 changer transitions 0/383 dead transitions. [2024-06-27 22:49:07,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 383 transitions, 5642 flow [2024-06-27 22:49:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 22:49:07,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-27 22:49:07,336 INFO L175 Difference]: Start difference. First operand has 128 places, 326 transitions, 4528 flow. Second operand 7 states and 164 transitions. [2024-06-27 22:49:07,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 383 transitions, 5642 flow [2024-06-27 22:49:07,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 383 transitions, 5591 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:49:07,470 INFO L231 Difference]: Finished difference. Result has 133 places, 329 transitions, 4652 flow [2024-06-27 22:49:07,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4477, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4652, PETRI_PLACES=133, PETRI_TRANSITIONS=329} [2024-06-27 22:49:07,471 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 82 predicate places. [2024-06-27 22:49:07,471 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 329 transitions, 4652 flow [2024-06-27 22:49:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 22:49:07,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:07,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:07,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:49:07,472 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:07,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 562747204, now seen corresponding path program 1 times [2024-06-27 22:49:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590307840] [2024-06-27 22:49:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:07,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:11,191 INFO 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 22:49:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590307840] [2024-06-27 22:49:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590307840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323533250] [2024-06-27 22:49:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 329 transitions, 4652 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:11,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:13,484 INFO L124 PetriNetUnfolderBase]: 5416/8115 cut-off events. [2024-06-27 22:49:13,485 INFO L125 PetriNetUnfolderBase]: For 68950/68961 co-relation queries the response was YES. [2024-06-27 22:49:13,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48082 conditions, 8115 events. 5416/8115 cut-off events. For 68950/68961 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 46475 event pairs, 1053 based on Foata normal form. 11/8118 useless extension candidates. Maximal degree in co-relation 48016. Up to 7124 conditions per place. [2024-06-27 22:49:13,557 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 307 selfloop transitions, 105 changer transitions 0/419 dead transitions. [2024-06-27 22:49:13,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 419 transitions, 6067 flow [2024-06-27 22:49:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 22:49:13,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2024-06-27 22:49:13,559 INFO L175 Difference]: Start difference. First operand has 133 places, 329 transitions, 4652 flow. Second operand 8 states and 211 transitions. [2024-06-27 22:49:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 419 transitions, 6067 flow [2024-06-27 22:49:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 419 transitions, 5902 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:13,719 INFO L231 Difference]: Finished difference. Result has 136 places, 329 transitions, 4728 flow [2024-06-27 22:49:13,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4728, PETRI_PLACES=136, PETRI_TRANSITIONS=329} [2024-06-27 22:49:13,720 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 85 predicate places. [2024-06-27 22:49:13,720 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 329 transitions, 4728 flow [2024-06-27 22:49:13,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:13,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:13,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:13,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:49:13,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:13,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2088243294, now seen corresponding path program 2 times [2024-06-27 22:49:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280664996] [2024-06-27 22:49:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:13,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:17,750 INFO 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 22:49:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280664996] [2024-06-27 22:49:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280664996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791493731] [2024-06-27 22:49:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:17,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:17,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 329 transitions, 4728 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:17,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:17,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:17,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:19,989 INFO L124 PetriNetUnfolderBase]: 5598/8381 cut-off events. [2024-06-27 22:49:19,989 INFO L125 PetriNetUnfolderBase]: For 79058/79099 co-relation queries the response was YES. [2024-06-27 22:49:20,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50441 conditions, 8381 events. 5598/8381 cut-off events. For 79058/79099 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 48088 event pairs, 1166 based on Foata normal form. 17/8384 useless extension candidates. Maximal degree in co-relation 50375. Up to 6900 conditions per place. [2024-06-27 22:49:20,190 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 261 selfloop transitions, 157 changer transitions 0/425 dead transitions. [2024-06-27 22:49:20,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 425 transitions, 6548 flow [2024-06-27 22:49:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-27 22:49:20,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-06-27 22:49:20,192 INFO L175 Difference]: Start difference. First operand has 136 places, 329 transitions, 4728 flow. Second operand 7 states and 191 transitions. [2024-06-27 22:49:20,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 425 transitions, 6548 flow [2024-06-27 22:49:20,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 425 transitions, 6338 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:20,313 INFO L231 Difference]: Finished difference. Result has 137 places, 356 transitions, 5354 flow [2024-06-27 22:49:20,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5354, PETRI_PLACES=137, PETRI_TRANSITIONS=356} [2024-06-27 22:49:20,314 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-06-27 22:49:20,314 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 356 transitions, 5354 flow [2024-06-27 22:49:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:20,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:20,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:49:20,315 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1192634126, now seen corresponding path program 3 times [2024-06-27 22:49:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152329554] [2024-06-27 22:49:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:24,738 INFO 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 22:49:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152329554] [2024-06-27 22:49:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152329554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:24,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:24,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:24,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724996742] [2024-06-27 22:49:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:24,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:24,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 356 transitions, 5354 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:24,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:24,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:24,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:27,472 INFO L124 PetriNetUnfolderBase]: 5656/8473 cut-off events. [2024-06-27 22:49:27,472 INFO L125 PetriNetUnfolderBase]: For 85445/85478 co-relation queries the response was YES. [2024-06-27 22:49:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52263 conditions, 8473 events. 5656/8473 cut-off events. For 85445/85478 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48623 event pairs, 1150 based on Foata normal form. 9/8468 useless extension candidates. Maximal degree in co-relation 52195. Up to 6960 conditions per place. [2024-06-27 22:49:27,547 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 263 selfloop transitions, 172 changer transitions 0/442 dead transitions. [2024-06-27 22:49:27,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 442 transitions, 6924 flow [2024-06-27 22:49:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:49:27,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-06-27 22:49:27,549 INFO L175 Difference]: Start difference. First operand has 137 places, 356 transitions, 5354 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:49:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 442 transitions, 6924 flow [2024-06-27 22:49:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 442 transitions, 6648 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:49:27,738 INFO L231 Difference]: Finished difference. Result has 142 places, 365 transitions, 5622 flow [2024-06-27 22:49:27,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5087, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5622, PETRI_PLACES=142, PETRI_TRANSITIONS=365} [2024-06-27 22:49:27,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2024-06-27 22:49:27,738 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 365 transitions, 5622 flow [2024-06-27 22:49:27,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:27,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:27,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:27,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:49:27,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:27,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2001739874, now seen corresponding path program 4 times [2024-06-27 22:49:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:27,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639060973] [2024-06-27 22:49:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:27,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:31,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639060973] [2024-06-27 22:49:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639060973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:31,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835379299] [2024-06-27 22:49:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:31,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:31,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:31,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 365 transitions, 5622 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:31,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:31,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:31,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:33,497 INFO L124 PetriNetUnfolderBase]: 5648/8515 cut-off events. [2024-06-27 22:49:33,497 INFO L125 PetriNetUnfolderBase]: For 92418/92531 co-relation queries the response was YES. [2024-06-27 22:49:33,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52358 conditions, 8515 events. 5648/8515 cut-off events. For 92418/92531 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 49501 event pairs, 1129 based on Foata normal form. 53/8543 useless extension candidates. Maximal degree in co-relation 52289. Up to 6952 conditions per place. [2024-06-27 22:49:33,576 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 251 selfloop transitions, 172 changer transitions 0/430 dead transitions. [2024-06-27 22:49:33,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 430 transitions, 6949 flow [2024-06-27 22:49:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:49:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:49:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 22:49:33,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:49:33,578 INFO L175 Difference]: Start difference. First operand has 142 places, 365 transitions, 5622 flow. Second operand 7 states and 182 transitions. [2024-06-27 22:49:33,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 430 transitions, 6949 flow [2024-06-27 22:49:33,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 430 transitions, 6539 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:33,766 INFO L231 Difference]: Finished difference. Result has 143 places, 370 transitions, 5679 flow [2024-06-27 22:49:33,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5222, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5679, PETRI_PLACES=143, PETRI_TRANSITIONS=370} [2024-06-27 22:49:33,767 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-06-27 22:49:33,767 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 370 transitions, 5679 flow [2024-06-27 22:49:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:33,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:33,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:49:33,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1427278874, now seen corresponding path program 5 times [2024-06-27 22:49:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705583012] [2024-06-27 22:49:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:37,741 INFO 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 22:49:37,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705583012] [2024-06-27 22:49:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705583012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:37,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:37,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640336117] [2024-06-27 22:49:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:37,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:37,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 370 transitions, 5679 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:37,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:37,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:37,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:40,417 INFO L124 PetriNetUnfolderBase]: 5640/8443 cut-off events. [2024-06-27 22:49:40,417 INFO L125 PetriNetUnfolderBase]: For 91207/91227 co-relation queries the response was YES. [2024-06-27 22:49:40,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52221 conditions, 8443 events. 5640/8443 cut-off events. For 91207/91227 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48258 event pairs, 1140 based on Foata normal form. 8/8415 useless extension candidates. Maximal degree in co-relation 52150. Up to 6944 conditions per place. [2024-06-27 22:49:40,627 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 250 selfloop transitions, 186 changer transitions 0/443 dead transitions. [2024-06-27 22:49:40,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 443 transitions, 6999 flow [2024-06-27 22:49:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:49:40,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-06-27 22:49:40,629 INFO L175 Difference]: Start difference. First operand has 143 places, 370 transitions, 5679 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:49:40,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 443 transitions, 6999 flow [2024-06-27 22:49:40,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 443 transitions, 6771 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 22:49:40,793 INFO L231 Difference]: Finished difference. Result has 149 places, 370 transitions, 5837 flow [2024-06-27 22:49:40,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5837, PETRI_PLACES=149, PETRI_TRANSITIONS=370} [2024-06-27 22:49:40,794 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-06-27 22:49:40,794 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 370 transitions, 5837 flow [2024-06-27 22:49:40,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:40,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:40,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:49:40,794 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:40,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -366669270, now seen corresponding path program 6 times [2024-06-27 22:49:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:40,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158552586] [2024-06-27 22:49:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:42,563 INFO 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 22:49:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158552586] [2024-06-27 22:49:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158552586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:42,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809587018] [2024-06-27 22:49:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:42,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:42,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:42,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:42,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 370 transitions, 5837 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:42,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:42,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:42,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:44,928 INFO L124 PetriNetUnfolderBase]: 5707/8597 cut-off events. [2024-06-27 22:49:44,928 INFO L125 PetriNetUnfolderBase]: For 98476/98476 co-relation queries the response was YES. [2024-06-27 22:49:44,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53132 conditions, 8597 events. 5707/8597 cut-off events. For 98476/98476 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 49732 event pairs, 1036 based on Foata normal form. 12/8606 useless extension candidates. Maximal degree in co-relation 53059. Up to 6374 conditions per place. [2024-06-27 22:49:45,000 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 256 selfloop transitions, 208 changer transitions 0/471 dead transitions. [2024-06-27 22:49:45,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 471 transitions, 7590 flow [2024-06-27 22:49:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:49:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 22:49:45,002 INFO L175 Difference]: Start difference. First operand has 149 places, 370 transitions, 5837 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:49:45,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 471 transitions, 7590 flow [2024-06-27 22:49:45,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 471 transitions, 7144 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:45,222 INFO L231 Difference]: Finished difference. Result has 154 places, 390 transitions, 6289 flow [2024-06-27 22:49:45,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6289, PETRI_PLACES=154, PETRI_TRANSITIONS=390} [2024-06-27 22:49:45,223 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2024-06-27 22:49:45,223 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 390 transitions, 6289 flow [2024-06-27 22:49:45,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:45,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:45,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:45,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:49:45,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:45,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1709369690, now seen corresponding path program 7 times [2024-06-27 22:49:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956066665] [2024-06-27 22:49:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:45,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:47,528 INFO 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 22:49:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956066665] [2024-06-27 22:49:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956066665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:47,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:47,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173875149] [2024-06-27 22:49:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:47,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:47,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 390 transitions, 6289 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:47,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:47,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:47,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:50,329 INFO L124 PetriNetUnfolderBase]: 5806/8763 cut-off events. [2024-06-27 22:49:50,330 INFO L125 PetriNetUnfolderBase]: For 110884/110894 co-relation queries the response was YES. [2024-06-27 22:49:50,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56053 conditions, 8763 events. 5806/8763 cut-off events. For 110884/110894 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 51098 event pairs, 1099 based on Foata normal form. 10/8769 useless extension candidates. Maximal degree in co-relation 55979. Up to 7182 conditions per place. [2024-06-27 22:49:50,399 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 289 selfloop transitions, 186 changer transitions 0/482 dead transitions. [2024-06-27 22:49:50,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 482 transitions, 8028 flow [2024-06-27 22:49:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:49:50,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-27 22:49:50,402 INFO L175 Difference]: Start difference. First operand has 154 places, 390 transitions, 6289 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:49:50,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 482 transitions, 8028 flow [2024-06-27 22:49:50,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 482 transitions, 7737 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:50,648 INFO L231 Difference]: Finished difference. Result has 159 places, 410 transitions, 6845 flow [2024-06-27 22:49:50,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6845, PETRI_PLACES=159, PETRI_TRANSITIONS=410} [2024-06-27 22:49:50,649 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-27 22:49:50,649 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 410 transitions, 6845 flow [2024-06-27 22:49:50,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:49:50,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:50,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:49:50,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1812526736, now seen corresponding path program 8 times [2024-06-27 22:49:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959324417] [2024-06-27 22:49:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:53,605 INFO 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 22:49:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959324417] [2024-06-27 22:49:53,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959324417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:53,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:53,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222296846] [2024-06-27 22:49:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:53,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:53,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 410 transitions, 6845 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:53,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:53,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:53,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:56,748 INFO L124 PetriNetUnfolderBase]: 5820/8735 cut-off events. [2024-06-27 22:49:56,749 INFO L125 PetriNetUnfolderBase]: For 113705/113705 co-relation queries the response was YES. [2024-06-27 22:49:56,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56773 conditions, 8735 events. 5820/8735 cut-off events. For 113705/113705 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 50283 event pairs, 1112 based on Foata normal form. 2/8729 useless extension candidates. Maximal degree in co-relation 56696. Up to 7196 conditions per place. [2024-06-27 22:49:56,834 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 294 selfloop transitions, 191 changer transitions 0/492 dead transitions. [2024-06-27 22:49:56,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 492 transitions, 8309 flow [2024-06-27 22:49:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-27 22:49:56,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067698259187621 [2024-06-27 22:49:56,836 INFO L175 Difference]: Start difference. First operand has 159 places, 410 transitions, 6845 flow. Second operand 11 states and 262 transitions. [2024-06-27 22:49:56,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 492 transitions, 8309 flow [2024-06-27 22:49:57,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 492 transitions, 8007 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 22:49:57,327 INFO L231 Difference]: Finished difference. Result has 166 places, 414 transitions, 7009 flow [2024-06-27 22:49:57,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6549, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7009, PETRI_PLACES=166, PETRI_TRANSITIONS=414} [2024-06-27 22:49:57,328 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 115 predicate places. [2024-06-27 22:49:57,328 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 414 transitions, 7009 flow [2024-06-27 22:49:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:49:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:57,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:49:57,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1437659010, now seen corresponding path program 1 times [2024-06-27 22:49:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832042774] [2024-06-27 22:49:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:01,636 INFO 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 22:50:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832042774] [2024-06-27 22:50:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832042774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:01,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40604713] [2024-06-27 22:50:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:01,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:01,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 414 transitions, 7009 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:01,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:01,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:01,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:04,607 INFO L124 PetriNetUnfolderBase]: 6457/9748 cut-off events. [2024-06-27 22:50:04,607 INFO L125 PetriNetUnfolderBase]: For 132248/132259 co-relation queries the response was YES. [2024-06-27 22:50:04,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62225 conditions, 9748 events. 6457/9748 cut-off events. For 132248/132259 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 58450 event pairs, 943 based on Foata normal form. 10/9750 useless extension candidates. Maximal degree in co-relation 62147. Up to 7680 conditions per place. [2024-06-27 22:50:04,705 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 407 selfloop transitions, 111 changer transitions 0/525 dead transitions. [2024-06-27 22:50:04,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 525 transitions, 8846 flow [2024-06-27 22:50:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 22:50:04,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 22:50:04,708 INFO L175 Difference]: Start difference. First operand has 166 places, 414 transitions, 7009 flow. Second operand 10 states and 257 transitions. [2024-06-27 22:50:04,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 525 transitions, 8846 flow [2024-06-27 22:50:05,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 525 transitions, 8535 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:50:05,105 INFO L231 Difference]: Finished difference. Result has 170 places, 421 transitions, 7067 flow [2024-06-27 22:50:05,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6708, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7067, PETRI_PLACES=170, PETRI_TRANSITIONS=421} [2024-06-27 22:50:05,106 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 119 predicate places. [2024-06-27 22:50:05,106 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 421 transitions, 7067 flow [2024-06-27 22:50:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:05,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:05,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:50:05,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:05,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1798342918, now seen corresponding path program 2 times [2024-06-27 22:50:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:05,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299542826] [2024-06-27 22:50:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:09,126 INFO 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 22:50:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299542826] [2024-06-27 22:50:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299542826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:09,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:09,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937443007] [2024-06-27 22:50:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:09,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:09,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:09,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 421 transitions, 7067 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:09,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:09,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:09,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:12,013 INFO L124 PetriNetUnfolderBase]: 6444/9732 cut-off events. [2024-06-27 22:50:12,014 INFO L125 PetriNetUnfolderBase]: For 138468/138479 co-relation queries the response was YES. [2024-06-27 22:50:12,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63077 conditions, 9732 events. 6444/9732 cut-off events. For 138468/138479 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 58188 event pairs, 1027 based on Foata normal form. 10/9734 useless extension candidates. Maximal degree in co-relation 62997. Up to 8484 conditions per place. [2024-06-27 22:50:12,109 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 401 selfloop transitions, 115 changer transitions 0/523 dead transitions. [2024-06-27 22:50:12,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 523 transitions, 8789 flow [2024-06-27 22:50:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:50:12,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 22:50:12,111 INFO L175 Difference]: Start difference. First operand has 170 places, 421 transitions, 7067 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:50:12,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 523 transitions, 8789 flow [2024-06-27 22:50:12,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 523 transitions, 8630 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:12,542 INFO L231 Difference]: Finished difference. Result has 174 places, 424 transitions, 7211 flow [2024-06-27 22:50:12,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7211, PETRI_PLACES=174, PETRI_TRANSITIONS=424} [2024-06-27 22:50:12,543 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 123 predicate places. [2024-06-27 22:50:12,543 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 424 transitions, 7211 flow [2024-06-27 22:50:12,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:12,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:12,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:12,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:50:12,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:12,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1683051748, now seen corresponding path program 3 times [2024-06-27 22:50:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:12,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840552020] [2024-06-27 22:50:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:17,127 INFO 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 22:50:17,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840552020] [2024-06-27 22:50:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840552020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620024661] [2024-06-27 22:50:17,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:17,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:17,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 424 transitions, 7211 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:17,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:17,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:17,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:19,971 INFO L124 PetriNetUnfolderBase]: 6494/9753 cut-off events. [2024-06-27 22:50:19,971 INFO L125 PetriNetUnfolderBase]: For 154241/154274 co-relation queries the response was YES. [2024-06-27 22:50:20,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64437 conditions, 9753 events. 6494/9753 cut-off events. For 154241/154274 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 57622 event pairs, 1113 based on Foata normal form. 10/9749 useless extension candidates. Maximal degree in co-relation 64355. Up to 8066 conditions per place. [2024-06-27 22:50:20,076 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 288 selfloop transitions, 204 changer transitions 0/499 dead transitions. [2024-06-27 22:50:20,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 499 transitions, 8664 flow [2024-06-27 22:50:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:50:20,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 22:50:20,078 INFO L175 Difference]: Start difference. First operand has 174 places, 424 transitions, 7211 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:50:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 499 transitions, 8664 flow [2024-06-27 22:50:20,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 499 transitions, 8434 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:20,754 INFO L231 Difference]: Finished difference. Result has 177 places, 426 transitions, 7441 flow [2024-06-27 22:50:20,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6981, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7441, PETRI_PLACES=177, PETRI_TRANSITIONS=426} [2024-06-27 22:50:20,755 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-27 22:50:20,755 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 426 transitions, 7441 flow [2024-06-27 22:50:20,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:20,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:20,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:50:20,755 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:20,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2142495226, now seen corresponding path program 4 times [2024-06-27 22:50:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275524309] [2024-06-27 22:50:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:24,819 INFO 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 22:50:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275524309] [2024-06-27 22:50:24,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275524309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:24,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:24,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043698878] [2024-06-27 22:50:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:24,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:24,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:24,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 426 transitions, 7441 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:24,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:24,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:27,671 INFO L124 PetriNetUnfolderBase]: 6544/9788 cut-off events. [2024-06-27 22:50:27,671 INFO L125 PetriNetUnfolderBase]: For 165986/166006 co-relation queries the response was YES. [2024-06-27 22:50:27,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65815 conditions, 9788 events. 6544/9788 cut-off events. For 165986/166006 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 57437 event pairs, 1164 based on Foata normal form. 9/9746 useless extension candidates. Maximal degree in co-relation 65732. Up to 8147 conditions per place. [2024-06-27 22:50:27,760 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 276 selfloop transitions, 215 changer transitions 0/498 dead transitions. [2024-06-27 22:50:27,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 498 transitions, 8863 flow [2024-06-27 22:50:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:50:27,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-27 22:50:27,762 INFO L175 Difference]: Start difference. First operand has 177 places, 426 transitions, 7441 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:50:27,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 498 transitions, 8863 flow [2024-06-27 22:50:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 498 transitions, 8459 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:28,212 INFO L231 Difference]: Finished difference. Result has 179 places, 428 transitions, 7522 flow [2024-06-27 22:50:28,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7037, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7522, PETRI_PLACES=179, PETRI_TRANSITIONS=428} [2024-06-27 22:50:28,212 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 128 predicate places. [2024-06-27 22:50:28,212 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 428 transitions, 7522 flow [2024-06-27 22:50:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:28,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:28,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:50:28,213 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1516709548, now seen corresponding path program 1 times [2024-06-27 22:50:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665064582] [2024-06-27 22:50:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:31,296 INFO 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 22:50:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665064582] [2024-06-27 22:50:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665064582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:50:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377977123] [2024-06-27 22:50:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:50:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:50:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:50:31,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:31,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 428 transitions, 7522 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:50:31,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:31,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:33,967 INFO L124 PetriNetUnfolderBase]: 6536/9871 cut-off events. [2024-06-27 22:50:33,967 INFO L125 PetriNetUnfolderBase]: For 176097/176194 co-relation queries the response was YES. [2024-06-27 22:50:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66284 conditions, 9871 events. 6536/9871 cut-off events. For 176097/176194 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 59258 event pairs, 972 based on Foata normal form. 74/9931 useless extension candidates. Maximal degree in co-relation 66201. Up to 8675 conditions per place. [2024-06-27 22:50:34,059 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 412 selfloop transitions, 79 changer transitions 0/498 dead transitions. [2024-06-27 22:50:34,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 498 transitions, 9007 flow [2024-06-27 22:50:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:50:34,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:50:34,060 INFO L175 Difference]: Start difference. First operand has 179 places, 428 transitions, 7522 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:50:34,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 498 transitions, 9007 flow [2024-06-27 22:50:34,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 498 transitions, 8546 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:34,504 INFO L231 Difference]: Finished difference. Result has 181 places, 430 transitions, 7264 flow [2024-06-27 22:50:34,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7061, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7264, PETRI_PLACES=181, PETRI_TRANSITIONS=430} [2024-06-27 22:50:34,505 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 130 predicate places. [2024-06-27 22:50:34,505 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 430 transitions, 7264 flow [2024-06-27 22:50:34,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 22:50:34,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:34,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:50:34,506 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -173694440, now seen corresponding path program 5 times [2024-06-27 22:50:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692845015] [2024-06-27 22:50:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:37,508 INFO 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 22:50:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692845015] [2024-06-27 22:50:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692845015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391040249] [2024-06-27 22:50:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:37,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:37,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:37,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:37,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 430 transitions, 7264 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:37,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:37,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:37,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:40,932 INFO L124 PetriNetUnfolderBase]: 7918/11972 cut-off events. [2024-06-27 22:50:40,933 INFO L125 PetriNetUnfolderBase]: For 204677/204687 co-relation queries the response was YES. [2024-06-27 22:50:41,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77740 conditions, 11972 events. 7918/11972 cut-off events. For 204677/204687 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 74238 event pairs, 1298 based on Foata normal form. 18/11987 useless extension candidates. Maximal degree in co-relation 77656. Up to 8854 conditions per place. [2024-06-27 22:50:41,099 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 429 selfloop transitions, 113 changer transitions 0/549 dead transitions. [2024-06-27 22:50:41,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 549 transitions, 9223 flow [2024-06-27 22:50:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:50:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:50:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-06-27 22:50:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2024-06-27 22:50:41,102 INFO L175 Difference]: Start difference. First operand has 181 places, 430 transitions, 7264 flow. Second operand 11 states and 291 transitions. [2024-06-27 22:50:41,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 549 transitions, 9223 flow [2024-06-27 22:50:41,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 549 transitions, 9036 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:42,004 INFO L231 Difference]: Finished difference. Result has 187 places, 444 transitions, 7545 flow [2024-06-27 22:50:42,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7079, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7545, PETRI_PLACES=187, PETRI_TRANSITIONS=444} [2024-06-27 22:50:42,005 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-27 22:50:42,005 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 444 transitions, 7545 flow [2024-06-27 22:50:42,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:42,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:42,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:50:42,005 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:42,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2047364070, now seen corresponding path program 6 times [2024-06-27 22:50:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:42,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130286810] [2024-06-27 22:50:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:44,360 INFO 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 22:50:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130286810] [2024-06-27 22:50:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130286810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:44,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732929898] [2024-06-27 22:50:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:44,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:44,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 444 transitions, 7545 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:44,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:44,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:44,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:48,130 INFO L124 PetriNetUnfolderBase]: 9655/14586 cut-off events. [2024-06-27 22:50:48,130 INFO L125 PetriNetUnfolderBase]: For 272283/272283 co-relation queries the response was YES. [2024-06-27 22:50:48,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95803 conditions, 14586 events. 9655/14586 cut-off events. For 272283/272283 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 93583 event pairs, 1481 based on Foata normal form. 8/14591 useless extension candidates. Maximal degree in co-relation 95717. Up to 8070 conditions per place. [2024-06-27 22:50:48,284 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 340 selfloop transitions, 228 changer transitions 0/575 dead transitions. [2024-06-27 22:50:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 575 transitions, 9808 flow [2024-06-27 22:50:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:50:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:50:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-06-27 22:50:48,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822050290135397 [2024-06-27 22:50:48,287 INFO L175 Difference]: Start difference. First operand has 187 places, 444 transitions, 7545 flow. Second operand 11 states and 301 transitions. [2024-06-27 22:50:48,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 575 transitions, 9808 flow [2024-06-27 22:50:49,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 575 transitions, 9650 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:49,513 INFO L231 Difference]: Finished difference. Result has 193 places, 465 transitions, 8252 flow [2024-06-27 22:50:49,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7387, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8252, PETRI_PLACES=193, PETRI_TRANSITIONS=465} [2024-06-27 22:50:49,514 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 142 predicate places. [2024-06-27 22:50:49,514 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 465 transitions, 8252 flow [2024-06-27 22:50:49,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:49,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:49,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:49,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:50:49,515 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:49,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2044507110, now seen corresponding path program 7 times [2024-06-27 22:50:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626829313] [2024-06-27 22:50:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:51,943 INFO 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 22:50:51,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:51,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626829313] [2024-06-27 22:50:51,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626829313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:51,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573995690] [2024-06-27 22:50:51,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:51,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:52,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:52,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 465 transitions, 8252 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:52,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:52,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:52,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:55,965 INFO L124 PetriNetUnfolderBase]: 9764/14731 cut-off events. [2024-06-27 22:50:55,965 INFO L125 PetriNetUnfolderBase]: For 303965/303965 co-relation queries the response was YES. [2024-06-27 22:50:56,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102006 conditions, 14731 events. 9764/14731 cut-off events. For 303965/303965 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 94676 event pairs, 1627 based on Foata normal form. 16/14734 useless extension candidates. Maximal degree in co-relation 101917. Up to 11925 conditions per place. [2024-06-27 22:50:56,114 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 348 selfloop transitions, 216 changer transitions 0/571 dead transitions. [2024-06-27 22:50:56,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 571 transitions, 10230 flow [2024-06-27 22:50:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:50:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:50:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-06-27 22:50:56,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647969052224371 [2024-06-27 22:50:56,116 INFO L175 Difference]: Start difference. First operand has 193 places, 465 transitions, 8252 flow. Second operand 11 states and 292 transitions. [2024-06-27 22:50:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 571 transitions, 10230 flow [2024-06-27 22:50:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 571 transitions, 9906 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:57,602 INFO L231 Difference]: Finished difference. Result has 198 places, 476 transitions, 8605 flow [2024-06-27 22:50:57,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7952, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8605, PETRI_PLACES=198, PETRI_TRANSITIONS=476} [2024-06-27 22:50:57,602 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2024-06-27 22:50:57,602 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 476 transitions, 8605 flow [2024-06-27 22:50:57,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:50:57,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:57,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:57,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:50:57,603 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:57,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash 626456316, now seen corresponding path program 8 times [2024-06-27 22:50:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:57,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743451166] [2024-06-27 22:50:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:59,413 INFO 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 22:50:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743451166] [2024-06-27 22:50:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743451166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:50:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102363400] [2024-06-27 22:50:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:50:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:50:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:50:59,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:50:59,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 476 transitions, 8605 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:50:59,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:59,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:50:59,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:04,123 INFO L124 PetriNetUnfolderBase]: 10640/17281 cut-off events. [2024-06-27 22:51:04,123 INFO L125 PetriNetUnfolderBase]: For 336403/337233 co-relation queries the response was YES. [2024-06-27 22:51:04,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113259 conditions, 17281 events. 10640/17281 cut-off events. For 336403/337233 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 129197 event pairs, 946 based on Foata normal form. 407/17239 useless extension candidates. Maximal degree in co-relation 113168. Up to 5616 conditions per place. [2024-06-27 22:51:04,287 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 275 selfloop transitions, 223 changer transitions 0/644 dead transitions. [2024-06-27 22:51:04,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 644 transitions, 11420 flow [2024-06-27 22:51:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:51:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:51:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 289 transitions. [2024-06-27 22:51:04,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148936170212767 [2024-06-27 22:51:04,288 INFO L175 Difference]: Start difference. First operand has 198 places, 476 transitions, 8605 flow. Second operand 10 states and 289 transitions. [2024-06-27 22:51:04,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 644 transitions, 11420 flow [2024-06-27 22:51:05,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 644 transitions, 10944 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 22:51:05,843 INFO L231 Difference]: Finished difference. Result has 204 places, 526 transitions, 9708 flow [2024-06-27 22:51:05,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8129, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9708, PETRI_PLACES=204, PETRI_TRANSITIONS=526} [2024-06-27 22:51:05,844 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 22:51:05,844 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 526 transitions, 9708 flow [2024-06-27 22:51:05,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 22:51:05,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:05,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:51:05,845 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:05,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1450675868, now seen corresponding path program 9 times [2024-06-27 22:51:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312758413] [2024-06-27 22:51:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312758413] [2024-06-27 22:51:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312758413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536082308] [2024-06-27 22:51:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:09,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 526 transitions, 9708 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:51:09,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:09,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:15,126 INFO L124 PetriNetUnfolderBase]: 13151/19828 cut-off events. [2024-06-27 22:51:15,126 INFO L125 PetriNetUnfolderBase]: For 474639/474639 co-relation queries the response was YES. [2024-06-27 22:51:15,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142492 conditions, 19828 events. 13151/19828 cut-off events. For 474639/474639 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 133340 event pairs, 3706 based on Foata normal form. 4/19823 useless extension candidates. Maximal degree in co-relation 142396. Up to 17909 conditions per place. [2024-06-27 22:51:15,344 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 407 selfloop transitions, 196 changer transitions 0/610 dead transitions. [2024-06-27 22:51:15,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 610 transitions, 11500 flow [2024-06-27 22:51:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:51:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:51:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-27 22:51:15,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067698259187621 [2024-06-27 22:51:15,346 INFO L175 Difference]: Start difference. First operand has 204 places, 526 transitions, 9708 flow. Second operand 11 states and 262 transitions. [2024-06-27 22:51:15,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 610 transitions, 11500 flow [2024-06-27 22:51:17,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 610 transitions, 11366 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:17,420 INFO L231 Difference]: Finished difference. Result has 211 places, 531 transitions, 10085 flow [2024-06-27 22:51:17,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9574, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10085, PETRI_PLACES=211, PETRI_TRANSITIONS=531} [2024-06-27 22:51:17,420 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 160 predicate places. [2024-06-27 22:51:17,421 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 531 transitions, 10085 flow [2024-06-27 22:51:17,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 22:51:17,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:17,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:51:17,421 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:17,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1617755411, now seen corresponding path program 1 times [2024-06-27 22:51:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090065170] [2024-06-27 22:51:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:22,143 INFO 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 22:51:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090065170] [2024-06-27 22:51:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090065170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619787134] [2024-06-27 22:51:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:22,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:22,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 531 transitions, 10085 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 22:51:22,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:22,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:22,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:28,266 INFO L124 PetriNetUnfolderBase]: 13847/20974 cut-off events. [2024-06-27 22:51:28,267 INFO L125 PetriNetUnfolderBase]: For 516212/516223 co-relation queries the response was YES. [2024-06-27 22:51:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150028 conditions, 20974 events. 13847/20974 cut-off events. For 516212/516223 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 143183 event pairs, 3420 based on Foata normal form. 52/21018 useless extension candidates. Maximal degree in co-relation 149931. Up to 16335 conditions per place. [2024-06-27 22:51:28,540 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 513 selfloop transitions, 139 changer transitions 0/659 dead transitions. [2024-06-27 22:51:28,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 659 transitions, 12768 flow [2024-06-27 22:51:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 22:51:28,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2024-06-27 22:51:28,547 INFO L175 Difference]: Start difference. First operand has 211 places, 531 transitions, 10085 flow. Second operand 9 states and 247 transitions. [2024-06-27 22:51:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 659 transitions, 12768 flow [2024-06-27 22:51:30,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 659 transitions, 12281 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 22:51:30,418 INFO L231 Difference]: Finished difference. Result has 211 places, 537 transitions, 10059 flow [2024-06-27 22:51:30,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9622, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10059, PETRI_PLACES=211, PETRI_TRANSITIONS=537} [2024-06-27 22:51:30,419 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 160 predicate places. [2024-06-27 22:51:30,419 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 537 transitions, 10059 flow [2024-06-27 22:51:30,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 22:51:30,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:30,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:30,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:51:30,419 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:30,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -127863583, now seen corresponding path program 2 times [2024-06-27 22:51:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:30,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624339692] [2024-06-27 22:51:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:34,774 INFO 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 22:51:34,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:34,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624339692] [2024-06-27 22:51:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624339692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:34,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49480798] [2024-06-27 22:51:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:34,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:34,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 537 transitions, 10059 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 22:51:34,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:34,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:34,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:40,633 INFO L124 PetriNetUnfolderBase]: 13711/20770 cut-off events. [2024-06-27 22:51:40,633 INFO L125 PetriNetUnfolderBase]: For 506228/506239 co-relation queries the response was YES. [2024-06-27 22:51:40,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147852 conditions, 20770 events. 13711/20770 cut-off events. For 506228/506239 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 141486 event pairs, 3696 based on Foata normal form. 68/20830 useless extension candidates. Maximal degree in co-relation 147754. Up to 18129 conditions per place. [2024-06-27 22:51:41,052 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 519 selfloop transitions, 118 changer transitions 0/644 dead transitions. [2024-06-27 22:51:41,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 644 transitions, 12308 flow [2024-06-27 22:51:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 22:51:41,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-27 22:51:41,054 INFO L175 Difference]: Start difference. First operand has 211 places, 537 transitions, 10059 flow. Second operand 9 states and 239 transitions. [2024-06-27 22:51:41,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 644 transitions, 12308 flow [2024-06-27 22:51:43,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 644 transitions, 12008 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 22:51:43,138 INFO L231 Difference]: Finished difference. Result has 214 places, 538 transitions, 10054 flow [2024-06-27 22:51:43,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9766, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10054, PETRI_PLACES=214, PETRI_TRANSITIONS=538} [2024-06-27 22:51:43,139 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 163 predicate places. [2024-06-27 22:51:43,139 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 538 transitions, 10054 flow [2024-06-27 22:51:43,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 22:51:43,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:43,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:51:43,140 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:43,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1057415563, now seen corresponding path program 3 times [2024-06-27 22:51:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699628434] [2024-06-27 22:51:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:47,949 INFO 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 22:51:47,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699628434] [2024-06-27 22:51:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699628434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:47,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445269709] [2024-06-27 22:51:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:47,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:47,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 538 transitions, 10054 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:47,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:47,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:47,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand