./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_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/mix006_power.oepc_pso.oepc_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/mix006_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006_power.oepc_pso.oepc_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 22:04:48,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:04:48,627 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:04:48,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:04:48,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:04:48,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:04:48,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:04:48,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:04:48,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:04:48,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:04:48,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:04:48,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:04:48,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:04:48,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:04:48,661 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:04:48,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:04:48,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:04:48,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:04:48,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:04:48,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:04:48,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:04:48,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:04:48,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:04:48,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:04:48,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:04:48,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:04:48,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:04:48,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:04:48,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:04:48,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:04:48,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:04:48,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:04:48,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:04:48,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:04:48,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:04:48,668 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:04:48,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:04:48,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:04:48,669 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:04:48,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:04:48,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:04:48,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:04:48,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:04:48,923 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:04:48,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:04:49,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:04:50,194 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:04:50,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:04:50,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466d70ecc/8a2d00695bd942e5a7ff7e04d578d7b6/FLAG120d62b2b [2024-06-27 22:04:50,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466d70ecc/8a2d00695bd942e5a7ff7e04d578d7b6 [2024-06-27 22:04:50,219 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:04:50,220 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:04:50,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:04:50,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:04:50,330 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:04:50,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:04:50,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:04:50,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:04:50,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:04:50" (1/2) ... [2024-06-27 22:04:50,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0bade9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:04:50" (1/2) ... [2024-06-27 22:04:50,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@546d5960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:50" (2/2) ... [2024-06-27 22:04:50,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0bade9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50, skipping insertion in model container [2024-06-27 22:04:50,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:50" (2/2) ... [2024-06-27 22:04:50,340 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:04:50,372 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:04:50,374 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:04:50,374 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:04:50,375 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 22:04:50,375 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:04:50,375 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-27 22:04:50,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:04:50,548 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 22:04:50,694 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:04:50,728 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:04:50,761 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:04:50,943 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:04:50,982 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:04:50,982 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50 WrapperNode [2024-06-27 22:04:50,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:04:50,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:04:50,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:04:50,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:04:50,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,064 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-27 22:04:51,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:04:51,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:04:51,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:04:51,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:04:51,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,126 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:04:51,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:04:51,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:04:51,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:04:51,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:04:51,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (1/1) ... [2024-06-27 22:04:51,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:04:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:04:51,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:04:51,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:04:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:04:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:04:51,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:04:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:04:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:04:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:04:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:04:51,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:04:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:04:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:04:51,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:04:51,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:04:51,305 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:04:51,402 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:04:51,404 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:04:51,911 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:04:51,911 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:04:52,083 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:04:52,083 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:04:52,083 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:04:52 BoogieIcfgContainer [2024-06-27 22:04:52,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:04:52,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:04:52,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:04:52,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:04:52,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:04:50" (1/4) ... [2024-06-27 22:04:52,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77795b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:04:52, skipping insertion in model container [2024-06-27 22:04:52,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:04:50" (2/4) ... [2024-06-27 22:04:52,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77795b41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:04:52, skipping insertion in model container [2024-06-27 22:04:52,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:04:50" (3/4) ... [2024-06-27 22:04:52,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77795b41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:04:52, skipping insertion in model container [2024-06-27 22:04:52,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:04:52" (4/4) ... [2024-06-27 22:04:52,092 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:04:52,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:04:52,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:04:52,106 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:04:52,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:04:52,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:04:52,206 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:04:52,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:04:52,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:04:52,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:04:52,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:04:52,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:04:52,236 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;@798448f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:04:52,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:04:52,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:04:52,241 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:04:52,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:04:52,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:52,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:04:52,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:52,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash 359830695, now seen corresponding path program 1 times [2024-06-27 22:04:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:52,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555613227] [2024-06-27 22:04:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:53,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:53,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555613227] [2024-06-27 22:04:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555613227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:53,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:04:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844778907] [2024-06-27 22:04:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:53,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:04:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:04:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:04:53,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:04:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:53,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:53,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:04:53,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:54,616 INFO L124 PetriNetUnfolderBase]: 3670/6108 cut-off events. [2024-06-27 22:04:54,617 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 22:04:54,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11486 conditions, 6108 events. 3670/6108 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40920 event pairs, 3047 based on Foata normal form. 175/5785 useless extension candidates. Maximal degree in co-relation 11474. Up to 5279 conditions per place. [2024-06-27 22:04:54,647 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 41 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:04:54,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 221 flow [2024-06-27 22:04:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:04:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:04:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 22:04:54,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-27 22:04:54,659 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-27 22:04:54,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 221 flow [2024-06-27 22:04:54,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:04:54,666 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:04:54,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:04:54,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:04:54,670 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:04:54,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:54,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:04:54,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2094937985, now seen corresponding path program 1 times [2024-06-27 22:04:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142823874] [2024-06-27 22:04:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142823874] [2024-06-27 22:04:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142823874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:04:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424168392] [2024-06-27 22:04:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:55,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:04:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:04:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:04:55,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:04:55,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:55,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:55,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:04:55,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:56,493 INFO L124 PetriNetUnfolderBase]: 3672/6028 cut-off events. [2024-06-27 22:04:56,493 INFO L125 PetriNetUnfolderBase]: For 839/839 co-relation queries the response was YES. [2024-06-27 22:04:56,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12677 conditions, 6028 events. 3672/6028 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39561 event pairs, 2429 based on Foata normal form. 3/5581 useless extension candidates. Maximal degree in co-relation 12665. Up to 5264 conditions per place. [2024-06-27 22:04:56,522 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 51 selfloop transitions, 8 changer transitions 1/73 dead transitions. [2024-06-27 22:04:56,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 319 flow [2024-06-27 22:04:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:04:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:04:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-27 22:04:56,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 22:04:56,524 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 124 transitions. [2024-06-27 22:04:56,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 319 flow [2024-06-27 22:04:56,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:04:56,526 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 191 flow [2024-06-27 22:04:56,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 22:04:56,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-27 22:04:56,527 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 191 flow [2024-06-27 22:04:56,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:56,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:56,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:56,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:04:56,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:56,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash -518567110, now seen corresponding path program 1 times [2024-06-27 22:04:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637023696] [2024-06-27 22:04:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:57,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:57,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637023696] [2024-06-27 22:04:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637023696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:04:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477883316] [2024-06-27 22:04:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:57,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:04:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:04:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:04:57,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:04:57,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:57,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:57,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:04:57,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:04:58,306 INFO L124 PetriNetUnfolderBase]: 4517/7353 cut-off events. [2024-06-27 22:04:58,307 INFO L125 PetriNetUnfolderBase]: For 2948/2948 co-relation queries the response was YES. [2024-06-27 22:04:58,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16877 conditions, 7353 events. 4517/7353 cut-off events. For 2948/2948 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 48315 event pairs, 2429 based on Foata normal form. 5/6837 useless extension candidates. Maximal degree in co-relation 16862. Up to 6347 conditions per place. [2024-06-27 22:04:58,339 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 68 selfloop transitions, 19 changer transitions 2/101 dead transitions. [2024-06-27 22:04:58,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 519 flow [2024-06-27 22:04:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:04:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:04:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-27 22:04:58,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-06-27 22:04:58,341 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 191 flow. Second operand 5 states and 159 transitions. [2024-06-27 22:04:58,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 519 flow [2024-06-27 22:04:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 508 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:04:58,345 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 314 flow [2024-06-27 22:04:58,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2024-06-27 22:04:58,347 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-27 22:04:58,347 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 314 flow [2024-06-27 22:04:58,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:58,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:04:58,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:04:58,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:04:58,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:04:58,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:04:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1021172900, now seen corresponding path program 1 times [2024-06-27 22:04:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:04:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792826544] [2024-06-27 22:04:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:04:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:04:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:04:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:04:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:04:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792826544] [2024-06-27 22:04:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792826544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:04:59,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:04:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:04:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957769854] [2024-06-27 22:04:59,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:04:59,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:04:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:04:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:04:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:04:59,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:04:59,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:04:59,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:04:59,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:04:59,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:00,586 INFO L124 PetriNetUnfolderBase]: 4525/7434 cut-off events. [2024-06-27 22:05:00,586 INFO L125 PetriNetUnfolderBase]: For 7181/7184 co-relation queries the response was YES. [2024-06-27 22:05:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19666 conditions, 7434 events. 4525/7434 cut-off events. For 7181/7184 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49242 event pairs, 2546 based on Foata normal form. 15/6939 useless extension candidates. Maximal degree in co-relation 19647. Up to 6316 conditions per place. [2024-06-27 22:05:00,627 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 78 selfloop transitions, 22 changer transitions 3/115 dead transitions. [2024-06-27 22:05:00,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 115 transitions, 677 flow [2024-06-27 22:05:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-27 22:05:00,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:05:00,631 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 314 flow. Second operand 6 states and 189 transitions. [2024-06-27 22:05:00,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 115 transitions, 677 flow [2024-06-27 22:05:00,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 669 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:05:00,642 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 384 flow [2024-06-27 22:05:00,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-27 22:05:00,644 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 22:05:00,644 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 384 flow [2024-06-27 22:05:00,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:00,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:00,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:05:00,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:00,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash -126753831, now seen corresponding path program 1 times [2024-06-27 22:05:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:00,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907184742] [2024-06-27 22:05:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907184742] [2024-06-27 22:05:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907184742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:02,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:02,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192215880] [2024-06-27 22:05:02,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:02,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:02,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:02,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:05:02,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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 22:05:02,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:02,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:05:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:03,171 INFO L124 PetriNetUnfolderBase]: 4570/7464 cut-off events. [2024-06-27 22:05:03,171 INFO L125 PetriNetUnfolderBase]: For 11105/11108 co-relation queries the response was YES. [2024-06-27 22:05:03,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21478 conditions, 7464 events. 4570/7464 cut-off events. For 11105/11108 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49123 event pairs, 2186 based on Foata normal form. 12/6979 useless extension candidates. Maximal degree in co-relation 21456. Up to 6299 conditions per place. [2024-06-27 22:05:03,216 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 85 selfloop transitions, 25 changer transitions 4/126 dead transitions. [2024-06-27 22:05:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 126 transitions, 802 flow [2024-06-27 22:05:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 22:05:03,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-06-27 22:05:03,218 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 384 flow. Second operand 7 states and 214 transitions. [2024-06-27 22:05:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 126 transitions, 802 flow [2024-06-27 22:05:03,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 749 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:03,233 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 411 flow [2024-06-27 22:05:03,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-06-27 22:05:03,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 22:05:03,238 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 411 flow [2024-06-27 22:05:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 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 22:05:03,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:03,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:03,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:05:03,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:03,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1123486705, now seen corresponding path program 1 times [2024-06-27 22:05:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138269043] [2024-06-27 22:05:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:04,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:04,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138269043] [2024-06-27 22:05:04,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138269043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:04,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:04,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:04,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761113685] [2024-06-27 22:05:04,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:04,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:04,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:04,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:04,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:04,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:04,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:05,780 INFO L124 PetriNetUnfolderBase]: 5206/8495 cut-off events. [2024-06-27 22:05:05,780 INFO L125 PetriNetUnfolderBase]: For 17849/17849 co-relation queries the response was YES. [2024-06-27 22:05:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25370 conditions, 8495 events. 5206/8495 cut-off events. For 17849/17849 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 56799 event pairs, 3179 based on Foata normal form. 2/7936 useless extension candidates. Maximal degree in co-relation 25346. Up to 7406 conditions per place. [2024-06-27 22:05:05,823 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 19 changer transitions 0/100 dead transitions. [2024-06-27 22:05:05,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 705 flow [2024-06-27 22:05:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:05:05,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:05:05,824 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 411 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:05:05,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 705 flow [2024-06-27 22:05:05,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 635 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:05,834 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 473 flow [2024-06-27 22:05:05,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-06-27 22:05:05,836 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 22:05:05,837 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 473 flow [2024-06-27 22:05:05,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:05,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:05,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:05,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:05:05,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:05,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:05,838 INFO L85 PathProgramCache]: Analyzing trace with hash 468377833, now seen corresponding path program 1 times [2024-06-27 22:05:05,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:05,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778373477] [2024-06-27 22:05:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:05,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:05,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778373477] [2024-06-27 22:05:05,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778373477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:05,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:05,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:05:05,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343371254] [2024-06-27 22:05:05,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:05,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:05:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:05:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:05:05,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 22:05:05,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:05,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:05,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 22:05:05,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:06,321 INFO L124 PetriNetUnfolderBase]: 1839/3773 cut-off events. [2024-06-27 22:05:06,321 INFO L125 PetriNetUnfolderBase]: For 5103/5358 co-relation queries the response was YES. [2024-06-27 22:05:06,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9624 conditions, 3773 events. 1839/3773 cut-off events. For 5103/5358 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 30144 event pairs, 1120 based on Foata normal form. 27/3400 useless extension candidates. Maximal degree in co-relation 9598. Up to 2210 conditions per place. [2024-06-27 22:05:06,345 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 39 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2024-06-27 22:05:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 562 flow [2024-06-27 22:05:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:05:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:05:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 22:05:06,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-27 22:05:06,347 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 473 flow. Second operand 3 states and 113 transitions. [2024-06-27 22:05:06,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 562 flow [2024-06-27 22:05:06,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 91 transitions, 536 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:06,354 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 420 flow [2024-06-27 22:05:06,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-06-27 22:05:06,355 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 22:05:06,355 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 420 flow [2024-06-27 22:05:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:06,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:06,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:05:06,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 632097165, now seen corresponding path program 1 times [2024-06-27 22:05:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744285033] [2024-06-27 22:05:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:07,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744285033] [2024-06-27 22:05:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744285033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:07,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409405369] [2024-06-27 22:05:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:07,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:07,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:07,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:07,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:07,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:08,639 INFO L124 PetriNetUnfolderBase]: 5286/8588 cut-off events. [2024-06-27 22:05:08,640 INFO L125 PetriNetUnfolderBase]: For 22726/22726 co-relation queries the response was YES. [2024-06-27 22:05:08,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26222 conditions, 8588 events. 5286/8588 cut-off events. For 22726/22726 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 55604 event pairs, 3218 based on Foata normal form. 2/8317 useless extension candidates. Maximal degree in co-relation 26194. Up to 7515 conditions per place. [2024-06-27 22:05:08,691 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 76 selfloop transitions, 15 changer transitions 2/102 dead transitions. [2024-06-27 22:05:08,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 686 flow [2024-06-27 22:05:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 22:05:08,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 22:05:08,693 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 420 flow. Second operand 6 states and 143 transitions. [2024-06-27 22:05:08,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 686 flow [2024-06-27 22:05:08,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 102 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:08,709 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 470 flow [2024-06-27 22:05:08,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-06-27 22:05:08,711 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-27 22:05:08,711 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 470 flow [2024-06-27 22:05:08,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:08,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:08,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:08,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:05:08,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:08,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash 436032468, now seen corresponding path program 1 times [2024-06-27 22:05:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:08,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123482435] [2024-06-27 22:05:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123482435] [2024-06-27 22:05:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123482435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:10,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:10,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249106105] [2024-06-27 22:05:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:10,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:10,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:10,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:10,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:10,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:11,543 INFO L124 PetriNetUnfolderBase]: 3926/6595 cut-off events. [2024-06-27 22:05:11,544 INFO L125 PetriNetUnfolderBase]: For 18922/18922 co-relation queries the response was YES. [2024-06-27 22:05:11,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20453 conditions, 6595 events. 3926/6595 cut-off events. For 18922/18922 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43113 event pairs, 2222 based on Foata normal form. 4/6398 useless extension candidates. Maximal degree in co-relation 20423. Up to 5587 conditions per place. [2024-06-27 22:05:11,582 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-27 22:05:11,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 748 flow [2024-06-27 22:05:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:05:11,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:05:11,587 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 470 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:05:11,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 748 flow [2024-06-27 22:05:11,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 106 transitions, 713 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:11,599 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 514 flow [2024-06-27 22:05:11,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-27 22:05:11,600 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-27 22:05:11,600 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 514 flow [2024-06-27 22:05:11,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:11,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:11,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:11,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:05:11,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:11,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -46352205, now seen corresponding path program 2 times [2024-06-27 22:05:11,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:11,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852528027] [2024-06-27 22:05:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852528027] [2024-06-27 22:05:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852528027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553684771] [2024-06-27 22:05:13,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:13,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:13,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:13,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:13,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:14,087 INFO L124 PetriNetUnfolderBase]: 4068/6809 cut-off events. [2024-06-27 22:05:14,087 INFO L125 PetriNetUnfolderBase]: For 22328/22345 co-relation queries the response was YES. [2024-06-27 22:05:14,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22322 conditions, 6809 events. 4068/6809 cut-off events. For 22328/22345 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 44016 event pairs, 1766 based on Foata normal form. 18/6639 useless extension candidates. Maximal degree in co-relation 22291. Up to 5635 conditions per place. [2024-06-27 22:05:14,125 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 99 selfloop transitions, 40 changer transitions 0/149 dead transitions. [2024-06-27 22:05:14,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 149 transitions, 1167 flow [2024-06-27 22:05:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:05:14,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:05:14,127 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 514 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:05:14,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 149 transitions, 1167 flow [2024-06-27 22:05:14,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 149 transitions, 1126 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:14,140 INFO L231 Difference]: Finished difference. Result has 83 places, 111 transitions, 819 flow [2024-06-27 22:05:14,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=819, PETRI_PLACES=83, PETRI_TRANSITIONS=111} [2024-06-27 22:05:14,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 22:05:14,141 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 111 transitions, 819 flow [2024-06-27 22:05:14,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:14,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:14,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:05:14,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash 625460685, now seen corresponding path program 3 times [2024-06-27 22:05:14,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:14,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012498514] [2024-06-27 22:05:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:14,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:15,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012498514] [2024-06-27 22:05:15,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012498514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:15,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:15,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112566899] [2024-06-27 22:05:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:15,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:15,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:15,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 111 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:15,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:16,422 INFO L124 PetriNetUnfolderBase]: 4810/7957 cut-off events. [2024-06-27 22:05:16,423 INFO L125 PetriNetUnfolderBase]: For 29842/29851 co-relation queries the response was YES. [2024-06-27 22:05:16,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27097 conditions, 7957 events. 4810/7957 cut-off events. For 29842/29851 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51633 event pairs, 2725 based on Foata normal form. 12/7734 useless extension candidates. Maximal degree in co-relation 27063. Up to 6679 conditions per place. [2024-06-27 22:05:16,465 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 104 selfloop transitions, 47 changer transitions 0/160 dead transitions. [2024-06-27 22:05:16,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 1434 flow [2024-06-27 22:05:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 22:05:16,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 22:05:16,467 INFO L175 Difference]: Start difference. First operand has 83 places, 111 transitions, 819 flow. Second operand 6 states and 147 transitions. [2024-06-27 22:05:16,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 1434 flow [2024-06-27 22:05:16,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 1370 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:16,491 INFO L231 Difference]: Finished difference. Result has 89 places, 132 transitions, 1152 flow [2024-06-27 22:05:16,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1152, PETRI_PLACES=89, PETRI_TRANSITIONS=132} [2024-06-27 22:05:16,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 22:05:16,492 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 132 transitions, 1152 flow [2024-06-27 22:05:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:16,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:16,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:16,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:05:16,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:16,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1436916944, now seen corresponding path program 1 times [2024-06-27 22:05:16,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:16,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459975792] [2024-06-27 22:05:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:16,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:18,281 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 22:05:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459975792] [2024-06-27 22:05:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459975792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595139434] [2024-06-27 22:05:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:18,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:18,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:18,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:18,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 132 transitions, 1152 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:18,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:18,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:18,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:19,636 INFO L124 PetriNetUnfolderBase]: 4211/7043 cut-off events. [2024-06-27 22:05:19,637 INFO L125 PetriNetUnfolderBase]: For 29244/29269 co-relation queries the response was YES. [2024-06-27 22:05:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25103 conditions, 7043 events. 4211/7043 cut-off events. For 29244/29269 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 45555 event pairs, 1653 based on Foata normal form. 18/6867 useless extension candidates. Maximal degree in co-relation 25065. Up to 5634 conditions per place. [2024-06-27 22:05:19,676 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 126 selfloop transitions, 62 changer transitions 0/198 dead transitions. [2024-06-27 22:05:19,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 198 transitions, 1944 flow [2024-06-27 22:05:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:05:19,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:05:19,678 INFO L175 Difference]: Start difference. First operand has 89 places, 132 transitions, 1152 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:05:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 198 transitions, 1944 flow [2024-06-27 22:05:19,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 198 transitions, 1864 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:19,703 INFO L231 Difference]: Finished difference. Result has 96 places, 151 transitions, 1398 flow [2024-06-27 22:05:19,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1398, PETRI_PLACES=96, PETRI_TRANSITIONS=151} [2024-06-27 22:05:19,703 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 22:05:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 151 transitions, 1398 flow [2024-06-27 22:05:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:19,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:19,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:05:19,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:19,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1148780678, now seen corresponding path program 2 times [2024-06-27 22:05:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669476601] [2024-06-27 22:05:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:21,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669476601] [2024-06-27 22:05:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669476601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:21,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:21,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419109281] [2024-06-27 22:05:21,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:21,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:21,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:21,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 151 transitions, 1398 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:21,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:21,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:21,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:22,269 INFO L124 PetriNetUnfolderBase]: 5151/8457 cut-off events. [2024-06-27 22:05:22,269 INFO L125 PetriNetUnfolderBase]: For 44302/44308 co-relation queries the response was YES. [2024-06-27 22:05:22,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32442 conditions, 8457 events. 5151/8457 cut-off events. For 44302/44308 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 54392 event pairs, 2589 based on Foata normal form. 7/8230 useless extension candidates. Maximal degree in co-relation 32401. Up to 6953 conditions per place. [2024-06-27 22:05:22,408 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 143 selfloop transitions, 63 changer transitions 0/215 dead transitions. [2024-06-27 22:05:22,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 215 transitions, 2282 flow [2024-06-27 22:05:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:05:22,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 22:05:22,410 INFO L175 Difference]: Start difference. First operand has 96 places, 151 transitions, 1398 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:05:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 215 transitions, 2282 flow [2024-06-27 22:05:22,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 215 transitions, 2178 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:22,485 INFO L231 Difference]: Finished difference. Result has 103 places, 179 transitions, 1799 flow [2024-06-27 22:05:22,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1799, PETRI_PLACES=103, PETRI_TRANSITIONS=179} [2024-06-27 22:05:22,486 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-27 22:05:22,486 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 179 transitions, 1799 flow [2024-06-27 22:05:22,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:22,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:22,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:22,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:05:22,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:22,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -861558356, now seen corresponding path program 3 times [2024-06-27 22:05:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405566356] [2024-06-27 22:05:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:23,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405566356] [2024-06-27 22:05:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405566356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904414829] [2024-06-27 22:05:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:23,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:23,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 179 transitions, 1799 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:23,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:23,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:23,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:25,083 INFO L124 PetriNetUnfolderBase]: 5226/8582 cut-off events. [2024-06-27 22:05:25,083 INFO L125 PetriNetUnfolderBase]: For 50085/50085 co-relation queries the response was YES. [2024-06-27 22:05:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34916 conditions, 8582 events. 5226/8582 cut-off events. For 50085/50085 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 55328 event pairs, 2595 based on Foata normal form. 3/8347 useless extension candidates. Maximal degree in co-relation 34870. Up to 7287 conditions per place. [2024-06-27 22:05:25,140 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 194 selfloop transitions, 35 changer transitions 0/238 dead transitions. [2024-06-27 22:05:25,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 238 transitions, 2701 flow [2024-06-27 22:05:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:05:25,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 22:05:25,142 INFO L175 Difference]: Start difference. First operand has 103 places, 179 transitions, 1799 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:05:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 238 transitions, 2701 flow [2024-06-27 22:05:25,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 238 transitions, 2662 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:25,200 INFO L231 Difference]: Finished difference. Result has 110 places, 192 transitions, 2035 flow [2024-06-27 22:05:25,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2035, PETRI_PLACES=110, PETRI_TRANSITIONS=192} [2024-06-27 22:05:25,200 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 22:05:25,201 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 192 transitions, 2035 flow [2024-06-27 22:05:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:25,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:25,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:25,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:05:25,201 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:25,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:25,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1879556974, now seen corresponding path program 4 times [2024-06-27 22:05:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085543446] [2024-06-27 22:05:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085543446] [2024-06-27 22:05:26,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085543446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:26,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:26,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028449497] [2024-06-27 22:05:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:26,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:26,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:26,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 192 transitions, 2035 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:26,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:26,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:26,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:27,592 INFO L124 PetriNetUnfolderBase]: 5205/8552 cut-off events. [2024-06-27 22:05:27,592 INFO L125 PetriNetUnfolderBase]: For 59056/59056 co-relation queries the response was YES. [2024-06-27 22:05:27,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36562 conditions, 8552 events. 5205/8552 cut-off events. For 59056/59056 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 55202 event pairs, 2595 based on Foata normal form. 8/8322 useless extension candidates. Maximal degree in co-relation 36512. Up to 7316 conditions per place. [2024-06-27 22:05:27,648 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 196 selfloop transitions, 23 changer transitions 0/228 dead transitions. [2024-06-27 22:05:27,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 228 transitions, 2641 flow [2024-06-27 22:05:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 22:05:27,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 22:05:27,652 INFO L175 Difference]: Start difference. First operand has 110 places, 192 transitions, 2035 flow. Second operand 7 states and 166 transitions. [2024-06-27 22:05:27,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 228 transitions, 2641 flow [2024-06-27 22:05:27,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 228 transitions, 2508 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:27,740 INFO L231 Difference]: Finished difference. Result has 113 places, 192 transitions, 1960 flow [2024-06-27 22:05:27,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1960, PETRI_PLACES=113, PETRI_TRANSITIONS=192} [2024-06-27 22:05:27,742 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-27 22:05:27,742 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 192 transitions, 1960 flow [2024-06-27 22:05:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:27,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:27,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:27,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:05:27,743 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:27,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1515467878, now seen corresponding path program 1 times [2024-06-27 22:05:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817323987] [2024-06-27 22:05:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:29,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:29,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817323987] [2024-06-27 22:05:29,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817323987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:29,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:29,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028769700] [2024-06-27 22:05:29,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:29,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:29,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:29,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:29,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 192 transitions, 1960 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:29,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:29,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:30,496 INFO L124 PetriNetUnfolderBase]: 5774/9576 cut-off events. [2024-06-27 22:05:30,496 INFO L125 PetriNetUnfolderBase]: For 70943/71149 co-relation queries the response was YES. [2024-06-27 22:05:30,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40146 conditions, 9576 events. 5774/9576 cut-off events. For 70943/71149 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 64072 event pairs, 2988 based on Foata normal form. 49/9221 useless extension candidates. Maximal degree in co-relation 40096. Up to 8127 conditions per place. [2024-06-27 22:05:30,554 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 169 selfloop transitions, 13 changer transitions 0/209 dead transitions. [2024-06-27 22:05:30,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 209 transitions, 2400 flow [2024-06-27 22:05:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:05:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:05:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-27 22:05:30,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 22:05:30,556 INFO L175 Difference]: Start difference. First operand has 113 places, 192 transitions, 1960 flow. Second operand 5 states and 116 transitions. [2024-06-27 22:05:30,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 209 transitions, 2400 flow [2024-06-27 22:05:30,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 209 transitions, 2314 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:30,611 INFO L231 Difference]: Finished difference. Result has 111 places, 195 transitions, 1937 flow [2024-06-27 22:05:30,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1937, PETRI_PLACES=111, PETRI_TRANSITIONS=195} [2024-06-27 22:05:30,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 22:05:30,611 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 195 transitions, 1937 flow [2024-06-27 22:05:30,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:30,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:30,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:05:30,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:30,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash -925446524, now seen corresponding path program 1 times [2024-06-27 22:05:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634220260] [2024-06-27 22:05:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:32,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634220260] [2024-06-27 22:05:32,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634220260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:32,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:32,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752683646] [2024-06-27 22:05:32,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:32,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:32,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:32,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:32,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:32,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 195 transitions, 1937 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 22:05:32,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:32,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:32,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:33,524 INFO L124 PetriNetUnfolderBase]: 5193/8518 cut-off events. [2024-06-27 22:05:33,524 INFO L125 PetriNetUnfolderBase]: For 70112/70209 co-relation queries the response was YES. [2024-06-27 22:05:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36995 conditions, 8518 events. 5193/8518 cut-off events. For 70112/70209 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56129 event pairs, 1894 based on Foata normal form. 28/8232 useless extension candidates. Maximal degree in co-relation 36946. Up to 6847 conditions per place. [2024-06-27 22:05:33,576 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 150 selfloop transitions, 72 changer transitions 0/242 dead transitions. [2024-06-27 22:05:33,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 242 transitions, 2703 flow [2024-06-27 22:05:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 22:05:33,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-27 22:05:33,578 INFO L175 Difference]: Start difference. First operand has 111 places, 195 transitions, 1937 flow. Second operand 7 states and 185 transitions. [2024-06-27 22:05:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 242 transitions, 2703 flow [2024-06-27 22:05:33,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 242 transitions, 2666 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:33,636 INFO L231 Difference]: Finished difference. Result has 117 places, 205 transitions, 2255 flow [2024-06-27 22:05:33,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2255, PETRI_PLACES=117, PETRI_TRANSITIONS=205} [2024-06-27 22:05:33,637 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 22:05:33,637 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 205 transitions, 2255 flow [2024-06-27 22:05:33,637 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 22:05:33,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:33,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:33,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:05:33,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:33,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash -921637244, now seen corresponding path program 2 times [2024-06-27 22:05:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977528983] [2024-06-27 22:05:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977528983] [2024-06-27 22:05:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977528983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286621046] [2024-06-27 22:05:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:35,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:35,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:05:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 205 transitions, 2255 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 22:05:35,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:35,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:05:35,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:36,880 INFO L124 PetriNetUnfolderBase]: 5160/8484 cut-off events. [2024-06-27 22:05:36,880 INFO L125 PetriNetUnfolderBase]: For 82551/82655 co-relation queries the response was YES. [2024-06-27 22:05:36,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39308 conditions, 8484 events. 5160/8484 cut-off events. For 82551/82655 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56070 event pairs, 1941 based on Foata normal form. 41/8227 useless extension candidates. Maximal degree in co-relation 39256. Up to 6913 conditions per place. [2024-06-27 22:05:36,954 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 84 changer transitions 0/244 dead transitions. [2024-06-27 22:05:36,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 244 transitions, 2935 flow [2024-06-27 22:05:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:05:36,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:05:36,956 INFO L175 Difference]: Start difference. First operand has 117 places, 205 transitions, 2255 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:05:36,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 244 transitions, 2935 flow [2024-06-27 22:05:37,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 244 transitions, 2833 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:37,053 INFO L231 Difference]: Finished difference. Result has 124 places, 213 transitions, 2552 flow [2024-06-27 22:05:37,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2552, PETRI_PLACES=124, PETRI_TRANSITIONS=213} [2024-06-27 22:05:37,053 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 22:05:37,053 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 213 transitions, 2552 flow [2024-06-27 22:05:37,054 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 22:05:37,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:37,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:05:37,054 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:37,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2100209195, now seen corresponding path program 1 times [2024-06-27 22:05:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925833030] [2024-06-27 22:05:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925833030] [2024-06-27 22:05:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925833030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817205898] [2024-06-27 22:05:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:38,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:38,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 213 transitions, 2552 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:38,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:38,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:38,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:40,335 INFO L124 PetriNetUnfolderBase]: 5441/8882 cut-off events. [2024-06-27 22:05:40,336 INFO L125 PetriNetUnfolderBase]: For 97520/97614 co-relation queries the response was YES. [2024-06-27 22:05:40,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43625 conditions, 8882 events. 5441/8882 cut-off events. For 97520/97614 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57759 event pairs, 1929 based on Foata normal form. 20/8566 useless extension candidates. Maximal degree in co-relation 43569. Up to 7008 conditions per place. [2024-06-27 22:05:40,423 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 157 selfloop transitions, 114 changer transitions 0/288 dead transitions. [2024-06-27 22:05:40,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 288 transitions, 3826 flow [2024-06-27 22:05:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:05:40,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 22:05:40,426 INFO L175 Difference]: Start difference. First operand has 124 places, 213 transitions, 2552 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:05:40,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 288 transitions, 3826 flow [2024-06-27 22:05:40,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 288 transitions, 3634 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:40,705 INFO L231 Difference]: Finished difference. Result has 130 places, 244 transitions, 3101 flow [2024-06-27 22:05:40,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3101, PETRI_PLACES=130, PETRI_TRANSITIONS=244} [2024-06-27 22:05:40,705 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 22:05:40,705 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 244 transitions, 3101 flow [2024-06-27 22:05:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:40,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:40,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:40,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:05:40,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:40,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2101097345, now seen corresponding path program 2 times [2024-06-27 22:05:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135726524] [2024-06-27 22:05:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:42,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:42,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135726524] [2024-06-27 22:05:42,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135726524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:42,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129130631] [2024-06-27 22:05:42,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:42,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:42,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:42,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:42,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:05:42,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 244 transitions, 3101 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:42,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:42,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:05:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:44,503 INFO L124 PetriNetUnfolderBase]: 5476/8960 cut-off events. [2024-06-27 22:05:44,503 INFO L125 PetriNetUnfolderBase]: For 106814/106899 co-relation queries the response was YES. [2024-06-27 22:05:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45460 conditions, 8960 events. 5476/8960 cut-off events. For 106814/106899 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 58334 event pairs, 1930 based on Foata normal form. 26/8698 useless extension candidates. Maximal degree in co-relation 45401. Up to 7064 conditions per place. [2024-06-27 22:05:44,581 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 163 selfloop transitions, 118 changer transitions 0/298 dead transitions. [2024-06-27 22:05:44,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 298 transitions, 4064 flow [2024-06-27 22:05:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:05:44,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-27 22:05:44,583 INFO L175 Difference]: Start difference. First operand has 130 places, 244 transitions, 3101 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:05:44,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 298 transitions, 4064 flow [2024-06-27 22:05:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 298 transitions, 3891 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:44,690 INFO L231 Difference]: Finished difference. Result has 135 places, 251 transitions, 3277 flow [2024-06-27 22:05:44,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3277, PETRI_PLACES=135, PETRI_TRANSITIONS=251} [2024-06-27 22:05:44,691 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-27 22:05:44,691 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 251 transitions, 3277 flow [2024-06-27 22:05:44,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:44,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:44,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:44,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:05:44,691 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:44,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:44,692 INFO L85 PathProgramCache]: Analyzing trace with hash -227663769, now seen corresponding path program 3 times [2024-06-27 22:05:44,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:44,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342139409] [2024-06-27 22:05:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:44,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342139409] [2024-06-27 22:05:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342139409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:45,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:45,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:05:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510455626] [2024-06-27 22:05:45,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:45,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:05:45,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:05:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:05:46,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:46,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 251 transitions, 3277 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:46,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:46,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:46,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:47,433 INFO L124 PetriNetUnfolderBase]: 5875/9520 cut-off events. [2024-06-27 22:05:47,433 INFO L125 PetriNetUnfolderBase]: For 119965/119991 co-relation queries the response was YES. [2024-06-27 22:05:47,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48715 conditions, 9520 events. 5875/9520 cut-off events. For 119965/119991 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 61498 event pairs, 2697 based on Foata normal form. 4/9231 useless extension candidates. Maximal degree in co-relation 48655. Up to 7849 conditions per place. [2024-06-27 22:05:47,524 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 191 selfloop transitions, 104 changer transitions 0/305 dead transitions. [2024-06-27 22:05:47,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 305 transitions, 4359 flow [2024-06-27 22:05:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:05:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:05:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:05:47,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 22:05:47,527 INFO L175 Difference]: Start difference. First operand has 135 places, 251 transitions, 3277 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:05:47,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 305 transitions, 4359 flow [2024-06-27 22:05:47,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 305 transitions, 4051 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:05:47,660 INFO L231 Difference]: Finished difference. Result has 136 places, 269 transitions, 3503 flow [2024-06-27 22:05:47,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3503, PETRI_PLACES=136, PETRI_TRANSITIONS=269} [2024-06-27 22:05:47,661 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 22:05:47,661 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 269 transitions, 3503 flow [2024-06-27 22:05:47,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:47,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:47,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:47,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:05:47,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:47,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1498986193, now seen corresponding path program 4 times [2024-06-27 22:05:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433373000] [2024-06-27 22:05:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:49,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433373000] [2024-06-27 22:05:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433373000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:49,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:49,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249332435] [2024-06-27 22:05:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:49,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:49,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 269 transitions, 3503 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:49,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:49,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:49,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:50,930 INFO L124 PetriNetUnfolderBase]: 5974/9693 cut-off events. [2024-06-27 22:05:50,930 INFO L125 PetriNetUnfolderBase]: For 126982/127008 co-relation queries the response was YES. [2024-06-27 22:05:50,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50193 conditions, 9693 events. 5974/9693 cut-off events. For 126982/127008 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 62821 event pairs, 2699 based on Foata normal form. 5/9397 useless extension candidates. Maximal degree in co-relation 50131. Up to 7827 conditions per place. [2024-06-27 22:05:51,012 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 222 selfloop transitions, 106 changer transitions 0/338 dead transitions. [2024-06-27 22:05:51,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 338 transitions, 4764 flow [2024-06-27 22:05:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:05:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:05:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:05:51,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 22:05:51,013 INFO L175 Difference]: Start difference. First operand has 136 places, 269 transitions, 3503 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:05:51,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 338 transitions, 4764 flow [2024-06-27 22:05:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 338 transitions, 4601 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:51,172 INFO L231 Difference]: Finished difference. Result has 143 places, 288 transitions, 3935 flow [2024-06-27 22:05:51,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3935, PETRI_PLACES=143, PETRI_TRANSITIONS=288} [2024-06-27 22:05:51,173 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-27 22:05:51,173 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 288 transitions, 3935 flow [2024-06-27 22:05:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:51,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:05:51,175 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:51,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash -227657972, now seen corresponding path program 1 times [2024-06-27 22:05:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885998125] [2024-06-27 22:05:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:52,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885998125] [2024-06-27 22:05:52,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885998125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:52,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132766507] [2024-06-27 22:05:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:52,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:52,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:52,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 288 transitions, 3935 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:52,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:52,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:54,338 INFO L124 PetriNetUnfolderBase]: 6216/10062 cut-off events. [2024-06-27 22:05:54,338 INFO L125 PetriNetUnfolderBase]: For 150296/150322 co-relation queries the response was YES. [2024-06-27 22:05:54,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54703 conditions, 10062 events. 6216/10062 cut-off events. For 150296/150322 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 65264 event pairs, 2717 based on Foata normal form. 11/9764 useless extension candidates. Maximal degree in co-relation 54638. Up to 7767 conditions per place. [2024-06-27 22:05:54,441 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 234 selfloop transitions, 122 changer transitions 0/366 dead transitions. [2024-06-27 22:05:54,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 366 transitions, 5291 flow [2024-06-27 22:05:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:05:54,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:05:54,442 INFO L175 Difference]: Start difference. First operand has 143 places, 288 transitions, 3935 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:05:54,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 366 transitions, 5291 flow [2024-06-27 22:05:54,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 366 transitions, 5149 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:54,640 INFO L231 Difference]: Finished difference. Result has 151 places, 307 transitions, 4401 flow [2024-06-27 22:05:54,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3793, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4401, PETRI_PLACES=151, PETRI_TRANSITIONS=307} [2024-06-27 22:05:54,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 22:05:54,641 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 307 transitions, 4401 flow [2024-06-27 22:05:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:54,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:54,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:05:54,641 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:54,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash 994717534, now seen corresponding path program 2 times [2024-06-27 22:05:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999169008] [2024-06-27 22:05:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:55,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999169008] [2024-06-27 22:05:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999169008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290688896] [2024-06-27 22:05:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:55,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:56,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 307 transitions, 4401 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:56,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:56,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:56,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:58,033 INFO L124 PetriNetUnfolderBase]: 6276/10127 cut-off events. [2024-06-27 22:05:58,033 INFO L125 PetriNetUnfolderBase]: For 167739/167759 co-relation queries the response was YES. [2024-06-27 22:05:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58076 conditions, 10127 events. 6276/10127 cut-off events. For 167739/167759 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 65444 event pairs, 2736 based on Foata normal form. 5/9826 useless extension candidates. Maximal degree in co-relation 58007. Up to 8698 conditions per place. [2024-06-27 22:05:58,116 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 320 selfloop transitions, 31 changer transitions 0/361 dead transitions. [2024-06-27 22:05:58,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 361 transitions, 5469 flow [2024-06-27 22:05:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 22:05:58,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2024-06-27 22:05:58,118 INFO L175 Difference]: Start difference. First operand has 151 places, 307 transitions, 4401 flow. Second operand 9 states and 202 transitions. [2024-06-27 22:05:58,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 361 transitions, 5469 flow [2024-06-27 22:05:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 361 transitions, 5328 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 22:05:58,305 INFO L231 Difference]: Finished difference. Result has 155 places, 313 transitions, 4469 flow [2024-06-27 22:05:58,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4469, PETRI_PLACES=155, PETRI_TRANSITIONS=313} [2024-06-27 22:05:58,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-27 22:05:58,305 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 313 transitions, 4469 flow [2024-06-27 22:05:58,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:58,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:58,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:58,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:05:58,306 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:05:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1863277175, now seen corresponding path program 5 times [2024-06-27 22:05:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:58,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148363596] [2024-06-27 22:05:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:59,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:59,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148363596] [2024-06-27 22:05:59,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148363596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:59,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:59,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:05:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433210547] [2024-06-27 22:05:59,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:05:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:05:59,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:05:59,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:05:59,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 313 transitions, 4469 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:59,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:59,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:05:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:01,551 INFO L124 PetriNetUnfolderBase]: 6311/10181 cut-off events. [2024-06-27 22:06:01,552 INFO L125 PetriNetUnfolderBase]: For 175760/175780 co-relation queries the response was YES. [2024-06-27 22:06:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58534 conditions, 10181 events. 6311/10181 cut-off events. For 175760/175780 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 65797 event pairs, 2737 based on Foata normal form. 10/9884 useless extension candidates. Maximal degree in co-relation 58463. Up to 8695 conditions per place. [2024-06-27 22:06:01,646 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 324 selfloop transitions, 36 changer transitions 0/370 dead transitions. [2024-06-27 22:06:01,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 370 transitions, 5631 flow [2024-06-27 22:06:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:06:01,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 22:06:01,647 INFO L175 Difference]: Start difference. First operand has 155 places, 313 transitions, 4469 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:06:01,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 370 transitions, 5631 flow [2024-06-27 22:06:01,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 370 transitions, 5504 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:01,933 INFO L231 Difference]: Finished difference. Result has 157 places, 323 transitions, 4650 flow [2024-06-27 22:06:01,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4342, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4650, PETRI_PLACES=157, PETRI_TRANSITIONS=323} [2024-06-27 22:06:01,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-27 22:06:01,934 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 323 transitions, 4650 flow [2024-06-27 22:06:01,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:01,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:06:01,934 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1855031795, now seen corresponding path program 6 times [2024-06-27 22:06:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778323287] [2024-06-27 22:06:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778323287] [2024-06-27 22:06:03,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778323287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:03,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:03,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006925127] [2024-06-27 22:06:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:03,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:03,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:06:03,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 323 transitions, 4650 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:03,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:03,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:06:03,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:05,197 INFO L124 PetriNetUnfolderBase]: 6305/10181 cut-off events. [2024-06-27 22:06:05,197 INFO L125 PetriNetUnfolderBase]: For 181194/181214 co-relation queries the response was YES. [2024-06-27 22:06:05,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58635 conditions, 10181 events. 6305/10181 cut-off events. For 181194/181214 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 65974 event pairs, 2728 based on Foata normal form. 4/9877 useless extension candidates. Maximal degree in co-relation 58563. Up to 8708 conditions per place. [2024-06-27 22:06:05,306 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 315 selfloop transitions, 51 changer transitions 0/376 dead transitions. [2024-06-27 22:06:05,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 376 transitions, 5728 flow [2024-06-27 22:06:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:06:05,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:06:05,308 INFO L175 Difference]: Start difference. First operand has 157 places, 323 transitions, 4650 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:06:05,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 376 transitions, 5728 flow [2024-06-27 22:06:05,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 376 transitions, 5548 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:05,579 INFO L231 Difference]: Finished difference. Result has 159 places, 326 transitions, 4654 flow [2024-06-27 22:06:05,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4654, PETRI_PLACES=159, PETRI_TRANSITIONS=326} [2024-06-27 22:06:05,580 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-27 22:06:05,580 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 326 transitions, 4654 flow [2024-06-27 22:06:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:05,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:05,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:06:05,581 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1855032012, now seen corresponding path program 3 times [2024-06-27 22:06:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:05,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471920520] [2024-06-27 22:06:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471920520] [2024-06-27 22:06:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471920520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:06,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424067477] [2024-06-27 22:06:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:06,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:06,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:06:06,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 326 transitions, 4654 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:06,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:06:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:08,705 INFO L124 PetriNetUnfolderBase]: 6292/10162 cut-off events. [2024-06-27 22:06:08,705 INFO L125 PetriNetUnfolderBase]: For 185442/185462 co-relation queries the response was YES. [2024-06-27 22:06:08,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58417 conditions, 10162 events. 6292/10162 cut-off events. For 185442/185462 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 65809 event pairs, 2731 based on Foata normal form. 5/9859 useless extension candidates. Maximal degree in co-relation 58344. Up to 8624 conditions per place. [2024-06-27 22:06:08,810 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 328 selfloop transitions, 51 changer transitions 0/389 dead transitions. [2024-06-27 22:06:08,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 389 transitions, 5863 flow [2024-06-27 22:06:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:06:08,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 22:06:08,812 INFO L175 Difference]: Start difference. First operand has 159 places, 326 transitions, 4654 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:06:08,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 389 transitions, 5863 flow [2024-06-27 22:06:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 389 transitions, 5726 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:09,052 INFO L231 Difference]: Finished difference. Result has 161 places, 331 transitions, 4752 flow [2024-06-27 22:06:09,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4752, PETRI_PLACES=161, PETRI_TRANSITIONS=331} [2024-06-27 22:06:09,053 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:06:09,053 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 331 transitions, 4752 flow [2024-06-27 22:06:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:09,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:09,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:09,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:06:09,053 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:09,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1863584013, now seen corresponding path program 1 times [2024-06-27 22:06:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654468965] [2024-06-27 22:06:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:11,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:11,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654468965] [2024-06-27 22:06:11,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654468965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:11,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:11,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514988047] [2024-06-27 22:06:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:06:11,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 331 transitions, 4752 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:11,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:11,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:06:11,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:13,471 INFO L124 PetriNetUnfolderBase]: 6211/9717 cut-off events. [2024-06-27 22:06:13,471 INFO L125 PetriNetUnfolderBase]: For 194448/194468 co-relation queries the response was YES. [2024-06-27 22:06:13,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58325 conditions, 9717 events. 6211/9717 cut-off events. For 194448/194468 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 60630 event pairs, 2654 based on Foata normal form. 4/9507 useless extension candidates. Maximal degree in co-relation 58251. Up to 8629 conditions per place. [2024-06-27 22:06:13,552 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 341 selfloop transitions, 31 changer transitions 0/382 dead transitions. [2024-06-27 22:06:13,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 382 transitions, 5784 flow [2024-06-27 22:06:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 22:06:13,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-27 22:06:13,553 INFO L175 Difference]: Start difference. First operand has 161 places, 331 transitions, 4752 flow. Second operand 9 states and 203 transitions. [2024-06-27 22:06:13,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 382 transitions, 5784 flow [2024-06-27 22:06:13,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 382 transitions, 5594 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:13,799 INFO L231 Difference]: Finished difference. Result has 165 places, 341 transitions, 4779 flow [2024-06-27 22:06:13,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4568, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4779, PETRI_PLACES=165, PETRI_TRANSITIONS=341} [2024-06-27 22:06:13,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-27 22:06:13,800 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 341 transitions, 4779 flow [2024-06-27 22:06:13,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:13,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:13,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:13,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:06:13,800 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:13,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash -265134950, now seen corresponding path program 1 times [2024-06-27 22:06:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654834931] [2024-06-27 22:06:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654834931] [2024-06-27 22:06:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654834931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770532542] [2024-06-27 22:06:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:15,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:15,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:15,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:06:15,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 341 transitions, 4779 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 22:06:15,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:15,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:06:15,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:17,368 INFO L124 PetriNetUnfolderBase]: 6333/10449 cut-off events. [2024-06-27 22:06:17,368 INFO L125 PetriNetUnfolderBase]: For 209020/209222 co-relation queries the response was YES. [2024-06-27 22:06:17,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60062 conditions, 10449 events. 6333/10449 cut-off events. For 209020/209222 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 69413 event pairs, 2945 based on Foata normal form. 67/10153 useless extension candidates. Maximal degree in co-relation 59986. Up to 8884 conditions per place. [2024-06-27 22:06:17,465 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 316 selfloop transitions, 16 changer transitions 0/365 dead transitions. [2024-06-27 22:06:17,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 365 transitions, 5563 flow [2024-06-27 22:06:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 22:06:17,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:06:17,467 INFO L175 Difference]: Start difference. First operand has 165 places, 341 transitions, 4779 flow. Second operand 6 states and 138 transitions. [2024-06-27 22:06:17,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 365 transitions, 5563 flow [2024-06-27 22:06:17,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 365 transitions, 5446 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:17,689 INFO L231 Difference]: Finished difference. Result has 165 places, 344 transitions, 4742 flow [2024-06-27 22:06:17,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4742, PETRI_PLACES=165, PETRI_TRANSITIONS=344} [2024-06-27 22:06:17,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-27 22:06:17,690 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 344 transitions, 4742 flow [2024-06-27 22:06:17,690 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 22:06:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:06:17,690 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:17,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1406469603, now seen corresponding path program 1 times [2024-06-27 22:06:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277953419] [2024-06-27 22:06:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277953419] [2024-06-27 22:06:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277953419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:19,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789726346] [2024-06-27 22:06:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:19,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:19,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 344 transitions, 4742 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:19,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:19,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:21,196 INFO L124 PetriNetUnfolderBase]: 5766/9105 cut-off events. [2024-06-27 22:06:21,196 INFO L125 PetriNetUnfolderBase]: For 205276/205381 co-relation queries the response was YES. [2024-06-27 22:06:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55578 conditions, 9105 events. 5766/9105 cut-off events. For 205276/205381 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 58026 event pairs, 1562 based on Foata normal form. 50/8944 useless extension candidates. Maximal degree in co-relation 55501. Up to 7339 conditions per place. [2024-06-27 22:06:21,299 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 273 selfloop transitions, 89 changer transitions 0/394 dead transitions. [2024-06-27 22:06:21,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 394 transitions, 5860 flow [2024-06-27 22:06:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:06:21,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 22:06:21,300 INFO L175 Difference]: Start difference. First operand has 165 places, 344 transitions, 4742 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:06:21,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 394 transitions, 5860 flow [2024-06-27 22:06:21,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 394 transitions, 5790 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:21,578 INFO L231 Difference]: Finished difference. Result has 169 places, 349 transitions, 4974 flow [2024-06-27 22:06:21,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4680, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4974, PETRI_PLACES=169, PETRI_TRANSITIONS=349} [2024-06-27 22:06:21,579 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 22:06:21,579 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 349 transitions, 4974 flow [2024-06-27 22:06:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:21,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:21,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:21,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:06:21,580 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:21,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1972484893, now seen corresponding path program 2 times [2024-06-27 22:06:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406217841] [2024-06-27 22:06:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:21,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406217841] [2024-06-27 22:06:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406217841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:23,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118564196] [2024-06-27 22:06:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:23,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:23,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 349 transitions, 4974 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:23,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:25,099 INFO L124 PetriNetUnfolderBase]: 5778/9123 cut-off events. [2024-06-27 22:06:25,099 INFO L125 PetriNetUnfolderBase]: For 217877/217973 co-relation queries the response was YES. [2024-06-27 22:06:25,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56716 conditions, 9123 events. 5778/9123 cut-off events. For 217877/217973 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 58188 event pairs, 1886 based on Foata normal form. 46/8960 useless extension candidates. Maximal degree in co-relation 56637. Up to 7509 conditions per place. [2024-06-27 22:06:25,197 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 276 selfloop transitions, 85 changer transitions 0/393 dead transitions. [2024-06-27 22:06:25,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 393 transitions, 5918 flow [2024-06-27 22:06:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:06:25,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-27 22:06:25,199 INFO L175 Difference]: Start difference. First operand has 169 places, 349 transitions, 4974 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:06:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 393 transitions, 5918 flow [2024-06-27 22:06:25,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 393 transitions, 5753 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:25,568 INFO L231 Difference]: Finished difference. Result has 173 places, 351 transitions, 5032 flow [2024-06-27 22:06:25,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5032, PETRI_PLACES=173, PETRI_TRANSITIONS=351} [2024-06-27 22:06:25,569 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-27 22:06:25,569 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 351 transitions, 5032 flow [2024-06-27 22:06:25,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:25,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:25,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:06:25,570 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:25,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:25,570 INFO L85 PathProgramCache]: Analyzing trace with hash 489350079, now seen corresponding path program 1 times [2024-06-27 22:06:25,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:25,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591314811] [2024-06-27 22:06:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591314811] [2024-06-27 22:06:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591314811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331984000] [2024-06-27 22:06:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:27,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:27,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 351 transitions, 5032 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:27,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:27,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:27,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:29,243 INFO L124 PetriNetUnfolderBase]: 5901/9339 cut-off events. [2024-06-27 22:06:29,244 INFO L125 PetriNetUnfolderBase]: For 232282/232391 co-relation queries the response was YES. [2024-06-27 22:06:29,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58545 conditions, 9339 events. 5901/9339 cut-off events. For 232282/232391 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 59902 event pairs, 1790 based on Foata normal form. 45/9122 useless extension candidates. Maximal degree in co-relation 58464. Up to 6557 conditions per place. [2024-06-27 22:06:29,335 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 214 selfloop transitions, 165 changer transitions 0/411 dead transitions. [2024-06-27 22:06:29,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 411 transitions, 6376 flow [2024-06-27 22:06:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:06:29,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 22:06:29,336 INFO L175 Difference]: Start difference. First operand has 173 places, 351 transitions, 5032 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:06:29,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 411 transitions, 6376 flow [2024-06-27 22:06:29,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 411 transitions, 6193 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:29,640 INFO L231 Difference]: Finished difference. Result has 176 places, 360 transitions, 5464 flow [2024-06-27 22:06:29,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4849, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5464, PETRI_PLACES=176, PETRI_TRANSITIONS=360} [2024-06-27 22:06:29,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-27 22:06:29,641 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 360 transitions, 5464 flow [2024-06-27 22:06:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:29,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:29,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:06:29,641 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:29,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1317809789, now seen corresponding path program 2 times [2024-06-27 22:06:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294170249] [2024-06-27 22:06:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294170249] [2024-06-27 22:06:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294170249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879270584] [2024-06-27 22:06:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:31,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:31,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:31,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:31,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 360 transitions, 5464 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:31,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:31,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:31,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:33,162 INFO L124 PetriNetUnfolderBase]: 6132/9651 cut-off events. [2024-06-27 22:06:33,162 INFO L125 PetriNetUnfolderBase]: For 256919/257022 co-relation queries the response was YES. [2024-06-27 22:06:33,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63146 conditions, 9651 events. 6132/9651 cut-off events. For 256919/257022 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 61889 event pairs, 1876 based on Foata normal form. 50/9432 useless extension candidates. Maximal degree in co-relation 63063. Up to 7291 conditions per place. [2024-06-27 22:06:33,267 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 209 selfloop transitions, 178 changer transitions 0/419 dead transitions. [2024-06-27 22:06:33,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 419 transitions, 6878 flow [2024-06-27 22:06:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 22:06:33,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 22:06:33,269 INFO L175 Difference]: Start difference. First operand has 176 places, 360 transitions, 5464 flow. Second operand 8 states and 213 transitions. [2024-06-27 22:06:33,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 419 transitions, 6878 flow [2024-06-27 22:06:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 419 transitions, 6804 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:33,682 INFO L231 Difference]: Finished difference. Result has 182 places, 370 transitions, 6000 flow [2024-06-27 22:06:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5398, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6000, PETRI_PLACES=182, PETRI_TRANSITIONS=370} [2024-06-27 22:06:33,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-27 22:06:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 370 transitions, 6000 flow [2024-06-27 22:06:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:33,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:33,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:06:33,684 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:33,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1975281403, now seen corresponding path program 3 times [2024-06-27 22:06:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930451285] [2024-06-27 22:06:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:35,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930451285] [2024-06-27 22:06:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930451285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:35,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:35,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267618064] [2024-06-27 22:06:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:35,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:35,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 370 transitions, 6000 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:37,323 INFO L124 PetriNetUnfolderBase]: 6023/9476 cut-off events. [2024-06-27 22:06:37,323 INFO L125 PetriNetUnfolderBase]: For 269248/269359 co-relation queries the response was YES. [2024-06-27 22:06:37,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63781 conditions, 9476 events. 6023/9476 cut-off events. For 269248/269359 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 60456 event pairs, 1863 based on Foata normal form. 60/9306 useless extension candidates. Maximal degree in co-relation 63695. Up to 7935 conditions per place. [2024-06-27 22:06:37,430 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 285 selfloop transitions, 94 changer transitions 0/411 dead transitions. [2024-06-27 22:06:37,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 411 transitions, 6961 flow [2024-06-27 22:06:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:06:37,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:06:37,431 INFO L175 Difference]: Start difference. First operand has 182 places, 370 transitions, 6000 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:06:37,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 411 transitions, 6961 flow [2024-06-27 22:06:37,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 411 transitions, 6813 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:37,857 INFO L231 Difference]: Finished difference. Result has 187 places, 372 transitions, 6085 flow [2024-06-27 22:06:37,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5866, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6085, PETRI_PLACES=187, PETRI_TRANSITIONS=372} [2024-06-27 22:06:37,857 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 22:06:37,858 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 372 transitions, 6085 flow [2024-06-27 22:06:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:37,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:37,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:37,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:06:37,858 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:37,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1975281527, now seen corresponding path program 3 times [2024-06-27 22:06:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:37,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924757157] [2024-06-27 22:06:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924757157] [2024-06-27 22:06:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924757157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:39,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740787497] [2024-06-27 22:06:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:39,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:39,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:39,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:39,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 372 transitions, 6085 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:39,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:39,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:39,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:41,443 INFO L124 PetriNetUnfolderBase]: 6166/9713 cut-off events. [2024-06-27 22:06:41,444 INFO L125 PetriNetUnfolderBase]: For 278854/278955 co-relation queries the response was YES. [2024-06-27 22:06:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65044 conditions, 9713 events. 6166/9713 cut-off events. For 278854/278955 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 62436 event pairs, 1839 based on Foata normal form. 48/9494 useless extension candidates. Maximal degree in co-relation 64956. Up to 7271 conditions per place. [2024-06-27 22:06:41,716 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 219 selfloop transitions, 178 changer transitions 0/429 dead transitions. [2024-06-27 22:06:41,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 429 transitions, 7447 flow [2024-06-27 22:06:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:06:41,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-06-27 22:06:41,718 INFO L175 Difference]: Start difference. First operand has 187 places, 372 transitions, 6085 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:06:41,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 429 transitions, 7447 flow [2024-06-27 22:06:42,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 429 transitions, 7249 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:42,146 INFO L231 Difference]: Finished difference. Result has 190 places, 378 transitions, 6369 flow [2024-06-27 22:06:42,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5892, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6369, PETRI_PLACES=190, PETRI_TRANSITIONS=378} [2024-06-27 22:06:42,147 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 22:06:42,147 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 378 transitions, 6369 flow [2024-06-27 22:06:42,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:42,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:42,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:06:42,147 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:42,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -681978999, now seen corresponding path program 4 times [2024-06-27 22:06:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229164244] [2024-06-27 22:06:42,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:44,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229164244] [2024-06-27 22:06:44,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229164244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:44,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617343130] [2024-06-27 22:06:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:44,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:44,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:44,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 378 transitions, 6369 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:44,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:44,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:44,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:46,171 INFO L124 PetriNetUnfolderBase]: 6150/9664 cut-off events. [2024-06-27 22:06:46,172 INFO L125 PetriNetUnfolderBase]: For 299166/299260 co-relation queries the response was YES. [2024-06-27 22:06:46,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67095 conditions, 9664 events. 6150/9664 cut-off events. For 299166/299260 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61645 event pairs, 1840 based on Foata normal form. 39/9402 useless extension candidates. Maximal degree in co-relation 67005. Up to 7078 conditions per place. [2024-06-27 22:06:46,284 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 221 selfloop transitions, 191 changer transitions 0/444 dead transitions. [2024-06-27 22:06:46,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 444 transitions, 7965 flow [2024-06-27 22:06:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-27 22:06:46,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:06:46,286 INFO L175 Difference]: Start difference. First operand has 190 places, 378 transitions, 6369 flow. Second operand 8 states and 224 transitions. [2024-06-27 22:06:46,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 444 transitions, 7965 flow [2024-06-27 22:06:46,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 444 transitions, 7607 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:46,825 INFO L231 Difference]: Finished difference. Result has 193 places, 384 transitions, 6511 flow [2024-06-27 22:06:46,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6011, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6511, PETRI_PLACES=193, PETRI_TRANSITIONS=384} [2024-06-27 22:06:46,825 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 22:06:46,826 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 384 transitions, 6511 flow [2024-06-27 22:06:46,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:46,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:46,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:06:46,826 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:46,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash -709500055, now seen corresponding path program 1 times [2024-06-27 22:06:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:46,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340595164] [2024-06-27 22:06:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:48,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:48,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340595164] [2024-06-27 22:06:48,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340595164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:48,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:48,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009541864] [2024-06-27 22:06:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:48,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:48,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:06:48,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 384 transitions, 6511 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:48,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:48,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:06:48,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:51,058 INFO L124 PetriNetUnfolderBase]: 6779/10531 cut-off events. [2024-06-27 22:06:51,059 INFO L125 PetriNetUnfolderBase]: For 303072/303102 co-relation queries the response was YES. [2024-06-27 22:06:51,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73274 conditions, 10531 events. 6779/10531 cut-off events. For 303072/303102 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 65574 event pairs, 1896 based on Foata normal form. 25/10356 useless extension candidates. Maximal degree in co-relation 73183. Up to 8310 conditions per place. [2024-06-27 22:06:51,192 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 287 selfloop transitions, 199 changer transitions 0/496 dead transitions. [2024-06-27 22:06:51,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 496 transitions, 9041 flow [2024-06-27 22:06:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:06:51,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 22:06:51,194 INFO L175 Difference]: Start difference. First operand has 193 places, 384 transitions, 6511 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:06:51,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 496 transitions, 9041 flow [2024-06-27 22:06:51,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 496 transitions, 8643 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:51,849 INFO L231 Difference]: Finished difference. Result has 200 places, 436 transitions, 7698 flow [2024-06-27 22:06:51,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6209, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7698, PETRI_PLACES=200, PETRI_TRANSITIONS=436} [2024-06-27 22:06:51,850 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-27 22:06:51,850 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 436 transitions, 7698 flow [2024-06-27 22:06:51,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:51,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:51,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:51,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:06:51,851 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:51,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -675545259, now seen corresponding path program 5 times [2024-06-27 22:06:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:51,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689122439] [2024-06-27 22:06:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:53,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689122439] [2024-06-27 22:06:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689122439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:53,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774847306] [2024-06-27 22:06:53,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:53,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:53,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:53,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:53,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 436 transitions, 7698 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:53,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:53,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:53,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:55,954 INFO L124 PetriNetUnfolderBase]: 6604/10356 cut-off events. [2024-06-27 22:06:55,954 INFO L125 PetriNetUnfolderBase]: For 332360/332494 co-relation queries the response was YES. [2024-06-27 22:06:56,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74889 conditions, 10356 events. 6604/10356 cut-off events. For 332360/332494 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 66477 event pairs, 1826 based on Foata normal form. 78/10142 useless extension candidates. Maximal degree in co-relation 74794. Up to 7786 conditions per place. [2024-06-27 22:06:56,084 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 252 selfloop transitions, 243 changer transitions 0/530 dead transitions. [2024-06-27 22:06:56,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 530 transitions, 10020 flow [2024-06-27 22:06:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:56,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 22:06:56,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 22:06:56,086 INFO L175 Difference]: Start difference. First operand has 200 places, 436 transitions, 7698 flow. Second operand 9 states and 238 transitions. [2024-06-27 22:06:56,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 530 transitions, 10020 flow [2024-06-27 22:06:56,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 530 transitions, 9898 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:56,680 INFO L231 Difference]: Finished difference. Result has 207 places, 460 transitions, 8734 flow [2024-06-27 22:06:56,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7608, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8734, PETRI_PLACES=207, PETRI_TRANSITIONS=460} [2024-06-27 22:06:56,681 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 153 predicate places. [2024-06-27 22:06:56,681 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 460 transitions, 8734 flow [2024-06-27 22:06:56,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:56,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:56,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:56,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:06:56,682 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:06:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2129858009, now seen corresponding path program 6 times [2024-06-27 22:06:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784089615] [2024-06-27 22:06:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784089615] [2024-06-27 22:06:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784089615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:58,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:58,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:58,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985716665] [2024-06-27 22:06:58,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:58,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:58,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:58,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:06:58,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 460 transitions, 8734 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:58,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:58,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:06:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:00,284 INFO L124 PetriNetUnfolderBase]: 6599/10398 cut-off events. [2024-06-27 22:07:00,284 INFO L125 PetriNetUnfolderBase]: For 368844/369023 co-relation queries the response was YES. [2024-06-27 22:07:00,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78510 conditions, 10398 events. 6599/10398 cut-off events. For 368844/369023 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 66952 event pairs, 1907 based on Foata normal form. 114/10210 useless extension candidates. Maximal degree in co-relation 78412. Up to 7781 conditions per place. [2024-06-27 22:07:00,420 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 236 selfloop transitions, 268 changer transitions 0/539 dead transitions. [2024-06-27 22:07:00,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 539 transitions, 10835 flow [2024-06-27 22:07:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-27 22:07:00,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2024-06-27 22:07:00,422 INFO L175 Difference]: Start difference. First operand has 207 places, 460 transitions, 8734 flow. Second operand 8 states and 217 transitions. [2024-06-27 22:07:00,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 539 transitions, 10835 flow [2024-06-27 22:07:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 539 transitions, 10430 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:01,103 INFO L231 Difference]: Finished difference. Result has 210 places, 476 transitions, 9338 flow [2024-06-27 22:07:01,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8342, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9338, PETRI_PLACES=210, PETRI_TRANSITIONS=476} [2024-06-27 22:07:01,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 22:07:01,105 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 476 transitions, 9338 flow [2024-06-27 22:07:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:01,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:01,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:07:01,106 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:01,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1692274750, now seen corresponding path program 1 times [2024-06-27 22:07:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142664760] [2024-06-27 22:07:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142664760] [2024-06-27 22:07:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142664760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:02,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:07:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826490614] [2024-06-27 22:07:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:02,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:07:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:07:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:07:02,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:02,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 476 transitions, 9338 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 22:07:02,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:02,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:02,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:04,721 INFO L124 PetriNetUnfolderBase]: 7297/11837 cut-off events. [2024-06-27 22:07:04,721 INFO L125 PetriNetUnfolderBase]: For 384348/384496 co-relation queries the response was YES. [2024-06-27 22:07:04,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84837 conditions, 11837 events. 7297/11837 cut-off events. For 384348/384496 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 78595 event pairs, 2652 based on Foata normal form. 116/11597 useless extension candidates. Maximal degree in co-relation 84738. Up to 10201 conditions per place. [2024-06-27 22:07:04,879 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 449 selfloop transitions, 38 changer transitions 0/525 dead transitions. [2024-06-27 22:07:04,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 525 transitions, 10808 flow [2024-06-27 22:07:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 22:07:04,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 22:07:04,881 INFO L175 Difference]: Start difference. First operand has 210 places, 476 transitions, 9338 flow. Second operand 7 states and 165 transitions. [2024-06-27 22:07:04,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 525 transitions, 10808 flow [2024-06-27 22:07:05,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 525 transitions, 10198 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:05,775 INFO L231 Difference]: Finished difference. Result has 215 places, 500 transitions, 9210 flow [2024-06-27 22:07:05,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8730, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9210, PETRI_PLACES=215, PETRI_TRANSITIONS=500} [2024-06-27 22:07:05,775 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-27 22:07:05,776 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 500 transitions, 9210 flow [2024-06-27 22:07:05,776 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 22:07:05,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:05,776 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 22:07:05,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:07:05,776 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:05,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1273992406, now seen corresponding path program 1 times [2024-06-27 22:07:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774235259] [2024-06-27 22:07:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:07,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774235259] [2024-06-27 22:07:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774235259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:07,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78177186] [2024-06-27 22:07:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:07,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:07,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:07:07,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 500 transitions, 9210 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:07,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:07,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:07:07,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:10,539 INFO L124 PetriNetUnfolderBase]: 7599/11816 cut-off events. [2024-06-27 22:07:10,539 INFO L125 PetriNetUnfolderBase]: For 415494/415573 co-relation queries the response was YES. [2024-06-27 22:07:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90097 conditions, 11816 events. 7599/11816 cut-off events. For 415494/415573 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 74847 event pairs, 1398 based on Foata normal form. 57/11623 useless extension candidates. Maximal degree in co-relation 89994. Up to 7728 conditions per place. [2024-06-27 22:07:10,681 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 258 selfloop transitions, 360 changer transitions 0/652 dead transitions. [2024-06-27 22:07:10,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 652 transitions, 12581 flow [2024-06-27 22:07:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:07:10,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-27 22:07:10,683 INFO L175 Difference]: Start difference. First operand has 215 places, 500 transitions, 9210 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:07:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 652 transitions, 12581 flow [2024-06-27 22:07:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 652 transitions, 12463 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-06-27 22:07:11,477 INFO L231 Difference]: Finished difference. Result has 226 places, 592 transitions, 11691 flow [2024-06-27 22:07:11,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11691, PETRI_PLACES=226, PETRI_TRANSITIONS=592} [2024-06-27 22:07:11,478 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 22:07:11,478 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 592 transitions, 11691 flow [2024-06-27 22:07:11,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:11,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:11,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:07:11,478 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:11,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash -171770049, now seen corresponding path program 1 times [2024-06-27 22:07:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740698573] [2024-06-27 22:07:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:12,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740698573] [2024-06-27 22:07:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740698573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:12,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:12,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:12,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300281933] [2024-06-27 22:07:12,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:12,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:12,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:12,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:12,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 592 transitions, 11691 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:12,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:12,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:12,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:15,416 INFO L124 PetriNetUnfolderBase]: 8109/12495 cut-off events. [2024-06-27 22:07:15,417 INFO L125 PetriNetUnfolderBase]: For 469344/469384 co-relation queries the response was YES. [2024-06-27 22:07:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101006 conditions, 12495 events. 8109/12495 cut-off events. For 469344/469384 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 78434 event pairs, 2506 based on Foata normal form. 4/12263 useless extension candidates. Maximal degree in co-relation 100897. Up to 10589 conditions per place. [2024-06-27 22:07:15,589 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 462 selfloop transitions, 173 changer transitions 0/649 dead transitions. [2024-06-27 22:07:15,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 649 transitions, 13602 flow [2024-06-27 22:07:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:07:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 22:07:15,591 INFO L175 Difference]: Start difference. First operand has 226 places, 592 transitions, 11691 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:07:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 649 transitions, 13602 flow [2024-06-27 22:07:16,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 649 transitions, 13516 flow, removed 42 selfloop flow, removed 1 redundant places. [2024-06-27 22:07:16,592 INFO L231 Difference]: Finished difference. Result has 235 places, 609 transitions, 12354 flow [2024-06-27 22:07:16,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11605, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12354, PETRI_PLACES=235, PETRI_TRANSITIONS=609} [2024-06-27 22:07:16,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 22:07:16,598 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 609 transitions, 12354 flow [2024-06-27 22:07:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:16,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:07:16,598 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:16,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -171597069, now seen corresponding path program 2 times [2024-06-27 22:07:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394081014] [2024-06-27 22:07:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394081014] [2024-06-27 22:07:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394081014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258215537] [2024-06-27 22:07:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:18,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:18,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 609 transitions, 12354 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:18,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:18,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:20,955 INFO L124 PetriNetUnfolderBase]: 8169/12575 cut-off events. [2024-06-27 22:07:20,955 INFO L125 PetriNetUnfolderBase]: For 489129/489169 co-relation queries the response was YES. [2024-06-27 22:07:21,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103777 conditions, 12575 events. 8169/12575 cut-off events. For 489129/489169 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 78824 event pairs, 2516 based on Foata normal form. 5/12343 useless extension candidates. Maximal degree in co-relation 103663. Up to 10653 conditions per place. [2024-06-27 22:07:21,136 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 478 selfloop transitions, 192 changer transitions 0/684 dead transitions. [2024-06-27 22:07:21,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 684 transitions, 14922 flow [2024-06-27 22:07:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:07:21,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 22:07:21,138 INFO L175 Difference]: Start difference. First operand has 235 places, 609 transitions, 12354 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:07:21,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 684 transitions, 14922 flow [2024-06-27 22:07:22,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 684 transitions, 14683 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 22:07:22,590 INFO L231 Difference]: Finished difference. Result has 242 places, 638 transitions, 13128 flow [2024-06-27 22:07:22,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12144, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13128, PETRI_PLACES=242, PETRI_TRANSITIONS=638} [2024-06-27 22:07:22,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 22:07:22,591 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 638 transitions, 13128 flow [2024-06-27 22:07:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:22,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:22,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:22,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:07:22,592 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:22,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash -171590559, now seen corresponding path program 3 times [2024-06-27 22:07:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303310034] [2024-06-27 22:07:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303310034] [2024-06-27 22:07:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303310034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548845072] [2024-06-27 22:07:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:24,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:24,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 638 transitions, 13128 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:24,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:24,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:24,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:27,960 INFO L124 PetriNetUnfolderBase]: 8155/12550 cut-off events. [2024-06-27 22:07:27,960 INFO L125 PetriNetUnfolderBase]: For 504852/504892 co-relation queries the response was YES. [2024-06-27 22:07:28,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103871 conditions, 12550 events. 8155/12550 cut-off events. For 504852/504892 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 78644 event pairs, 2502 based on Foata normal form. 5/12318 useless extension candidates. Maximal degree in co-relation 103755. Up to 10637 conditions per place. [2024-06-27 22:07:28,106 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 488 selfloop transitions, 194 changer transitions 0/696 dead transitions. [2024-06-27 22:07:28,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 696 transitions, 15066 flow [2024-06-27 22:07:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-06-27 22:07:28,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981060606060606 [2024-06-27 22:07:28,107 INFO L175 Difference]: Start difference. First operand has 242 places, 638 transitions, 13128 flow. Second operand 11 states and 263 transitions. [2024-06-27 22:07:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 696 transitions, 15066 flow [2024-06-27 22:07:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 696 transitions, 14726 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:28,987 INFO L231 Difference]: Finished difference. Result has 249 places, 638 transitions, 13199 flow [2024-06-27 22:07:28,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12788, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13199, PETRI_PLACES=249, PETRI_TRANSITIONS=638} [2024-06-27 22:07:28,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 22:07:28,988 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 638 transitions, 13199 flow [2024-06-27 22:07:28,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:28,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:28,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:28,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:07:28,991 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:28,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1804456100, now seen corresponding path program 1 times [2024-06-27 22:07:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631015917] [2024-06-27 22:07:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:30,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:30,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631015917] [2024-06-27 22:07:30,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631015917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:30,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:30,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:07:30,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012711793] [2024-06-27 22:07:30,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:30,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:07:30,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:07:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:07:30,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 638 transitions, 13199 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:33,965 INFO L124 PetriNetUnfolderBase]: 8278/12890 cut-off events. [2024-06-27 22:07:33,965 INFO L125 PetriNetUnfolderBase]: For 526040/526215 co-relation queries the response was YES. [2024-06-27 22:07:34,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104554 conditions, 12890 events. 8278/12890 cut-off events. For 526040/526215 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 82505 event pairs, 2734 based on Foata normal form. 121/12741 useless extension candidates. Maximal degree in co-relation 104437. Up to 11436 conditions per place. [2024-06-27 22:07:34,121 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 613 selfloop transitions, 45 changer transitions 0/697 dead transitions. [2024-06-27 22:07:34,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 697 transitions, 15175 flow [2024-06-27 22:07:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:07:34,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 22:07:34,124 INFO L175 Difference]: Start difference. First operand has 249 places, 638 transitions, 13199 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:07:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 697 transitions, 15175 flow [2024-06-27 22:07:35,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 697 transitions, 14730 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 22:07:35,166 INFO L231 Difference]: Finished difference. Result has 250 places, 661 transitions, 13227 flow [2024-06-27 22:07:35,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12754, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13227, PETRI_PLACES=250, PETRI_TRANSITIONS=661} [2024-06-27 22:07:35,167 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-27 22:07:35,167 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 661 transitions, 13227 flow [2024-06-27 22:07:35,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:35,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:35,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:35,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:07:35,168 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:35,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash -593594392, now seen corresponding path program 1 times [2024-06-27 22:07:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470123817] [2024-06-27 22:07:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:37,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:37,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470123817] [2024-06-27 22:07:37,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470123817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:37,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:37,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841301104] [2024-06-27 22:07:37,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:37,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:37,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:37,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:37,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:07:37,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 661 transitions, 13227 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:37,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:37,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:07:37,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:40,710 INFO L124 PetriNetUnfolderBase]: 7865/12475 cut-off events. [2024-06-27 22:07:40,711 INFO L125 PetriNetUnfolderBase]: For 592355/592542 co-relation queries the response was YES. [2024-06-27 22:07:40,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103573 conditions, 12475 events. 7865/12475 cut-off events. For 592355/592542 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 82542 event pairs, 1995 based on Foata normal form. 70/12091 useless extension candidates. Maximal degree in co-relation 103451. Up to 8091 conditions per place. [2024-06-27 22:07:40,904 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 368 selfloop transitions, 321 changer transitions 0/735 dead transitions. [2024-06-27 22:07:40,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 735 transitions, 15406 flow [2024-06-27 22:07:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 22:07:40,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:07:40,906 INFO L175 Difference]: Start difference. First operand has 250 places, 661 transitions, 13227 flow. Second operand 9 states and 243 transitions. [2024-06-27 22:07:40,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 735 transitions, 15406 flow [2024-06-27 22:07:42,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 735 transitions, 15311 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-27 22:07:42,068 INFO L231 Difference]: Finished difference. Result has 260 places, 668 transitions, 13912 flow [2024-06-27 22:07:42,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13132, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13912, PETRI_PLACES=260, PETRI_TRANSITIONS=668} [2024-06-27 22:07:42,069 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:07:42,069 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 668 transitions, 13912 flow [2024-06-27 22:07:42,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:42,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:42,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:07:42,070 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:42,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash 357433700, now seen corresponding path program 2 times [2024-06-27 22:07:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900418581] [2024-06-27 22:07:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:43,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:43,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900418581] [2024-06-27 22:07:43,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900418581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:43,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:43,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:07:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936495705] [2024-06-27 22:07:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:07:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:07:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:07:43,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:07:43,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 668 transitions, 13912 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 22:07:43,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:43,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:07:43,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:46,862 INFO L124 PetriNetUnfolderBase]: 8494/13222 cut-off events. [2024-06-27 22:07:46,863 INFO L125 PetriNetUnfolderBase]: For 575165/575363 co-relation queries the response was YES. [2024-06-27 22:07:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110502 conditions, 13222 events. 8494/13222 cut-off events. For 575165/575363 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 84975 event pairs, 2871 based on Foata normal form. 130/13077 useless extension candidates. Maximal degree in co-relation 110375. Up to 11848 conditions per place. [2024-06-27 22:07:47,023 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 614 selfloop transitions, 41 changer transitions 0/695 dead transitions. [2024-06-27 22:07:47,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 695 transitions, 15489 flow [2024-06-27 22:07:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:07:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:07:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 22:07:47,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 22:07:47,025 INFO L175 Difference]: Start difference. First operand has 260 places, 668 transitions, 13912 flow. Second operand 6 states and 142 transitions. [2024-06-27 22:07:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 695 transitions, 15489 flow [2024-06-27 22:07:48,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 695 transitions, 14796 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:48,078 INFO L231 Difference]: Finished difference. Result has 262 places, 671 transitions, 13398 flow [2024-06-27 22:07:48,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13219, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13398, PETRI_PLACES=262, PETRI_TRANSITIONS=671} [2024-06-27 22:07:48,079 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-27 22:07:48,079 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 671 transitions, 13398 flow [2024-06-27 22:07:48,079 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 22:07:48,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:07:48,079 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:07:48,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash -295837984, now seen corresponding path program 2 times [2024-06-27 22:07:48,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575938611] [2024-06-27 22:07:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat