./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.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/mix009.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/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.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 22:05:46,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:05:46,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:05:46,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:05:46,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:05:46,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:05:46,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:05:46,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:05:46,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:05:46,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:05:46,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:05:46,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:05:46,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:05:46,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:05:46,628 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:05:46,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:05:46,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:05:46,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:05:46,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:05:46,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:05:46,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:05:46,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:05:46,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:05:46,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:05:46,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:05:46,630 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:05:46,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:05:46,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:05:46,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:05:46,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:05:46,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:05:46,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:05:46,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:46,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:05:46,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:05:46,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:05:46,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:05:46,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:05:46,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:05:46,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:05:46,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:05:46,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:05:46,856 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:05:46,857 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:05:46,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.oepc.yml/witness.yml [2024-06-27 22:05:46,997 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:05:46,997 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:05:46,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 22:05:47,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:05:48,217 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:05:48,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 22:05:48,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41dec3bff/a3a7e39b82174cd5bad7739297b7bcb5/FLAG28567dda0 [2024-06-27 22:05:48,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41dec3bff/a3a7e39b82174cd5bad7739297b7bcb5 [2024-06-27 22:05:48,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:05:48,255 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:05:48,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:48,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:05:48,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:05:48,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:46" (1/2) ... [2024-06-27 22:05:48,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602a4190 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:48, skipping insertion in model container [2024-06-27 22:05:48,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:46" (1/2) ... [2024-06-27 22:05:48,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4169cd23 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:48, skipping insertion in model container [2024-06-27 22:05:48,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:48" (2/2) ... [2024-06-27 22:05:48,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602a4190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48, skipping insertion in model container [2024-06-27 22:05:48,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:48" (2/2) ... [2024-06-27 22:05:48,267 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:05:48,288 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:05:48,289 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_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_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$w_buff0_used >= 0LL) && (0LL - (long long )z$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_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$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 )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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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_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$w_buff0_used >= 0LL) && (long long )z$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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$w_buff1_used >= 0LL) [2024-06-27 22:05:48,290 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$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$r_buff1_thd0) + (long long )z$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$read_delayed) + (long long )z$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$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (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$w_buff0_used >= 0LL) && (long long )main$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_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$r_buff0_thd1 + (long long )z$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$r_buff1_thd0 + (long long )z$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$read_delayed + (long long )z$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$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$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$r_buff1_thd0 >= 0LL) && (long long )z$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$read_delayed >= 0LL) && (long long )z$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 22:05:48,290 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:05:48,290 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-27 22:05:48,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:05:48,464 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/mix009.oepc.i[945,958] [2024-06-27 22:05:48,566 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:48,574 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:05:48,602 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/mix009.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:05:48,777 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:48,824 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:05:48,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48 WrapperNode [2024-06-27 22:05:48,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:48,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:48,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:05:48,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:05:48,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,898 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 118 [2024-06-27 22:05:48,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:48,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:05:48,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:05:48,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:05:48,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,943 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 22:05:48,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:05:48,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:05:48,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:05:48,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:05:48,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (1/1) ... [2024-06-27 22:05:48,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:48,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:05:49,025 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 22:05:49,028 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 22:05:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:05:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:05:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:05:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:05:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:05:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:05:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:05:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:05:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:05:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:05:49,061 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 22:05:49,156 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:05:49,157 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:05:49,576 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:05:49,576 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:05:49,704 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:05:49,704 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:05:49,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:49 BoogieIcfgContainer [2024-06-27 22:05:49,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:05:49,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:05:49,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:05:49,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:05:49,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:46" (1/4) ... [2024-06-27 22:05:49,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68066722 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:05:49, skipping insertion in model container [2024-06-27 22:05:49,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:05:48" (2/4) ... [2024-06-27 22:05:49,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68066722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:05:49, skipping insertion in model container [2024-06-27 22:05:49,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:48" (3/4) ... [2024-06-27 22:05:49,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68066722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:05:49, skipping insertion in model container [2024-06-27 22:05:49,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:49" (4/4) ... [2024-06-27 22:05:49,712 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-27 22:05:49,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:05:49,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:05:49,724 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:05:49,767 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:05:49,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:05:49,818 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 22:05:49,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:49,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 22:05:49,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:05:49,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 22:05:49,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:05:49,844 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;@7876ab7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:05:49,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:05:49,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:05:49,848 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:05:49,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:49,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:49,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:05:49,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:49,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:49,878 INFO L85 PathProgramCache]: Analyzing trace with hash 319772151, now seen corresponding path program 1 times [2024-06-27 22:05:49,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:49,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561903693] [2024-06-27 22:05:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:51,251 INFO 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 22:05:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561903693] [2024-06-27 22:05:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561903693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:51,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:51,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:05:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764257718] [2024-06-27 22:05:51,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:51,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:05:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:05:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:05:51,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:05:51,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:51,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:51,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:05:51,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:51,557 INFO L124 PetriNetUnfolderBase]: 460/821 cut-off events. [2024-06-27 22:05:51,557 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:05:51,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 821 events. 460/821 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4284 event pairs, 210 based on Foata normal form. 42/811 useless extension candidates. Maximal degree in co-relation 1598. Up to 761 conditions per place. [2024-06-27 22:05:51,565 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-27 22:05:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 165 flow [2024-06-27 22:05:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:05:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:05:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 22:05:51,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-27 22:05:51,576 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-27 22:05:51,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 165 flow [2024-06-27 22:05:51,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:51,581 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 97 flow [2024-06-27 22:05:51,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-27 22:05:51,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 22:05:51,585 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 97 flow [2024-06-27 22:05:51,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:51,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:51,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:51,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:05:51,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:51,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1936590603, now seen corresponding path program 1 times [2024-06-27 22:05:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625817108] [2024-06-27 22:05:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:51,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:52,465 INFO 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 22:05:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625817108] [2024-06-27 22:05:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625817108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:05:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577444570] [2024-06-27 22:05:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:52,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:05:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:05:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:05:52,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:05:52,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:52,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:05:52,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:52,707 INFO L124 PetriNetUnfolderBase]: 462/932 cut-off events. [2024-06-27 22:05:52,707 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-06-27 22:05:52,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 932 events. 462/932 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5310 event pairs, 318 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 1892. Up to 753 conditions per place. [2024-06-27 22:05:52,711 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 36 selfloop transitions, 6 changer transitions 1/55 dead transitions. [2024-06-27 22:05:52,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 231 flow [2024-06-27 22:05:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:05:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:05:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-27 22:05:52,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2024-06-27 22:05:52,729 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 97 flow. Second operand 4 states and 99 transitions. [2024-06-27 22:05:52,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 231 flow [2024-06-27 22:05:52,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:52,731 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 143 flow [2024-06-27 22:05:52,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-27 22:05:52,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-27 22:05:52,732 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 143 flow [2024-06-27 22:05:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:52,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:52,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:05:52,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:52,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 95234092, now seen corresponding path program 1 times [2024-06-27 22:05:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824933612] [2024-06-27 22:05:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:53,451 INFO 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 22:05:53,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824933612] [2024-06-27 22:05:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824933612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:53,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:53,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479588444] [2024-06-27 22:05:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:53,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:05:53,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:53,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:53,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:05:53,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:53,721 INFO L124 PetriNetUnfolderBase]: 539/1058 cut-off events. [2024-06-27 22:05:53,721 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-06-27 22:05:53,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 1058 events. 539/1058 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5961 event pairs, 278 based on Foata normal form. 2/977 useless extension candidates. Maximal degree in co-relation 2371. Up to 860 conditions per place. [2024-06-27 22:05:53,726 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 44 selfloop transitions, 8 changer transitions 2/65 dead transitions. [2024-06-27 22:05:53,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 311 flow [2024-06-27 22:05:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:05:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:05:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 22:05:53,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-06-27 22:05:53,728 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 143 flow. Second operand 5 states and 119 transitions. [2024-06-27 22:05:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 311 flow [2024-06-27 22:05:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:53,730 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 171 flow [2024-06-27 22:05:53,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 22:05:53,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-27 22:05:53,731 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 171 flow [2024-06-27 22:05:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:53,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:53,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:05:53,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:53,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1342709772, now seen corresponding path program 1 times [2024-06-27 22:05:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025998822] [2024-06-27 22:05:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:54,530 INFO 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 22:05:54,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025998822] [2024-06-27 22:05:54,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025998822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:54,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:54,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586733190] [2024-06-27 22:05:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:54,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:54,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:05:54,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 171 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 22:05:54,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:54,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:05:54,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:54,814 INFO L124 PetriNetUnfolderBase]: 541/1071 cut-off events. [2024-06-27 22:05:54,815 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2024-06-27 22:05:54,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2554 conditions, 1071 events. 541/1071 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6107 event pairs, 229 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 2537. Up to 846 conditions per place. [2024-06-27 22:05:54,819 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 51 selfloop transitions, 10 changer transitions 3/75 dead transitions. [2024-06-27 22:05:54,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 381 flow [2024-06-27 22:05:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:05:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:05:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 22:05:54,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-27 22:05:54,821 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 171 flow. Second operand 6 states and 142 transitions. [2024-06-27 22:05:54,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 381 flow [2024-06-27 22:05:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 364 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:05:54,823 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 195 flow [2024-06-27 22:05:54,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 22:05:54,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-27 22:05:54,824 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 195 flow [2024-06-27 22:05:54,824 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 22:05:54,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:54,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:54,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:05:54,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:54,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1139303855, now seen corresponding path program 1 times [2024-06-27 22:05:54,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:54,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839349602] [2024-06-27 22:05:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:54,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:54,875 INFO 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 22:05:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839349602] [2024-06-27 22:05:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839349602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:54,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:54,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:05:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100307845] [2024-06-27 22:05:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:05:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:05:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:05:54,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-06-27 22:05:54,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:54,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:54,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-06-27 22:05:54,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:54,964 INFO L124 PetriNetUnfolderBase]: 226/577 cut-off events. [2024-06-27 22:05:54,964 INFO L125 PetriNetUnfolderBase]: For 282/285 co-relation queries the response was YES. [2024-06-27 22:05:54,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 577 events. 226/577 cut-off events. For 282/285 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3571 event pairs, 92 based on Foata normal form. 2/535 useless extension candidates. Maximal degree in co-relation 1265. Up to 331 conditions per place. [2024-06-27 22:05:54,967 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-06-27 22:05:54,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 279 flow [2024-06-27 22:05:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:05:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:05:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 22:05:54,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2024-06-27 22:05:54,969 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 195 flow. Second operand 3 states and 88 transitions. [2024-06-27 22:05:54,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 279 flow [2024-06-27 22:05:54,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 256 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:05:54,971 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 176 flow [2024-06-27 22:05:54,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:05:54,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-27 22:05:54,972 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 176 flow [2024-06-27 22:05:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:54,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:54,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:05:54,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:54,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1139303401, now seen corresponding path program 1 times [2024-06-27 22:05:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812933915] [2024-06-27 22:05:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:56,226 INFO 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 22:05:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812933915] [2024-06-27 22:05:56,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812933915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:56,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:56,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368703402] [2024-06-27 22:05:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:56,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:56,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:05:56,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:56,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:56,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:05:56,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:56,605 INFO L124 PetriNetUnfolderBase]: 700/1371 cut-off events. [2024-06-27 22:05:56,605 INFO L125 PetriNetUnfolderBase]: For 1190/1193 co-relation queries the response was YES. [2024-06-27 22:05:56,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1371 events. 700/1371 cut-off events. For 1190/1193 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7705 event pairs, 343 based on Foata normal form. 4/1318 useless extension candidates. Maximal degree in co-relation 3282. Up to 1139 conditions per place. [2024-06-27 22:05:56,611 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 43 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 22:05:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 332 flow [2024-06-27 22:05:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:05:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:05:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-06-27 22:05:56,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:05:56,613 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 176 flow. Second operand 5 states and 97 transitions. [2024-06-27 22:05:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 332 flow [2024-06-27 22:05:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:56,615 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 219 flow [2024-06-27 22:05:56,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 22:05:56,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-27 22:05:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 219 flow [2024-06-27 22:05:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:56,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:56,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:05:56,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1853879565, now seen corresponding path program 1 times [2024-06-27 22:05:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278187533] [2024-06-27 22:05:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278187533] [2024-06-27 22:05:57,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278187533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:57,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:05:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651906228] [2024-06-27 22:05:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:05:57,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:05:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:05:58,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:05:58,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 219 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 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 22:05:58,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:58,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:05:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:58,332 INFO L124 PetriNetUnfolderBase]: 575/1024 cut-off events. [2024-06-27 22:05:58,332 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-06-27 22:05:58,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1024 events. 575/1024 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5326 event pairs, 94 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 2797. Up to 830 conditions per place. [2024-06-27 22:05:58,338 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 65 selfloop transitions, 24 changer transitions 7/106 dead transitions. [2024-06-27 22:05:58,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 106 transitions, 605 flow [2024-06-27 22:05:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:05:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:05:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-27 22:05:58,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-06-27 22:05:58,339 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 219 flow. Second operand 9 states and 186 transitions. [2024-06-27 22:05:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 106 transitions, 605 flow [2024-06-27 22:05:58,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 591 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:58,343 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 364 flow [2024-06-27 22:05:58,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-27 22:05:58,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-27 22:05:58,345 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 364 flow [2024-06-27 22:05:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 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 22:05:58,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:58,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:58,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:05:58,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:58,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 937420572, now seen corresponding path program 1 times [2024-06-27 22:05:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977414530] [2024-06-27 22:05:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:59,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977414530] [2024-06-27 22:05:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977414530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:59,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:05:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266081796] [2024-06-27 22:05:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:05:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:05:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:05:59,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:05:59,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:59,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:59,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:05:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:00,366 INFO L124 PetriNetUnfolderBase]: 593/1117 cut-off events. [2024-06-27 22:06:00,366 INFO L125 PetriNetUnfolderBase]: For 1936/1942 co-relation queries the response was YES. [2024-06-27 22:06:00,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1117 events. 593/1117 cut-off events. For 1936/1942 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5970 event pairs, 180 based on Foata normal form. 9/1097 useless extension candidates. Maximal degree in co-relation 3292. Up to 940 conditions per place. [2024-06-27 22:06:00,373 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 57 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-27 22:06:00,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 552 flow [2024-06-27 22:06:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:06:00,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-06-27 22:06:00,375 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 364 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:06:00,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 552 flow [2024-06-27 22:06:00,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 518 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:00,393 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 371 flow [2024-06-27 22:06:00,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-06-27 22:06:00,394 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-27 22:06:00,394 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 371 flow [2024-06-27 22:06:00,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:00,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:00,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:06:00,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:00,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1013284091, now seen corresponding path program 1 times [2024-06-27 22:06:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806441346] [2024-06-27 22:06:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:01,651 INFO 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 22:06:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806441346] [2024-06-27 22:06:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806441346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:01,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082699102] [2024-06-27 22:06:01,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:01,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:01,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:01,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:01,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:01,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:02,085 INFO L124 PetriNetUnfolderBase]: 632/1184 cut-off events. [2024-06-27 22:06:02,086 INFO L125 PetriNetUnfolderBase]: For 2337/2340 co-relation queries the response was YES. [2024-06-27 22:06:02,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 1184 events. 632/1184 cut-off events. For 2337/2340 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6363 event pairs, 143 based on Foata normal form. 4/1153 useless extension candidates. Maximal degree in co-relation 3659. Up to 1003 conditions per place. [2024-06-27 22:06:02,093 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 62 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-06-27 22:06:02,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 635 flow [2024-06-27 22:06:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:06:02,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-06-27 22:06:02,095 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 371 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:06:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 635 flow [2024-06-27 22:06:02,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 87 transitions, 599 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:02,100 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 450 flow [2024-06-27 22:06:02,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-06-27 22:06:02,101 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-27 22:06:02,102 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 450 flow [2024-06-27 22:06:02,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:02,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:02,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:02,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:06:02,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:02,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1995603185, now seen corresponding path program 2 times [2024-06-27 22:06:02,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:02,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259006416] [2024-06-27 22:06:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259006416] [2024-06-27 22:06:03,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259006416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:03,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:03,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657492191] [2024-06-27 22:06:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:03,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:03,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:03,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:03,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:03,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:03,408 INFO L124 PetriNetUnfolderBase]: 629/1190 cut-off events. [2024-06-27 22:06:03,408 INFO L125 PetriNetUnfolderBase]: For 2899/2905 co-relation queries the response was YES. [2024-06-27 22:06:03,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1190 events. 629/1190 cut-off events. For 2899/2905 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6453 event pairs, 190 based on Foata normal form. 7/1165 useless extension candidates. Maximal degree in co-relation 3883. Up to 1023 conditions per place. [2024-06-27 22:06:03,415 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 61 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-27 22:06:03,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 628 flow [2024-06-27 22:06:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 22:06:03,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 22:06:03,417 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 450 flow. Second operand 6 states and 109 transitions. [2024-06-27 22:06:03,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 628 flow [2024-06-27 22:06:03,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 615 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:03,422 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 466 flow [2024-06-27 22:06:03,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-06-27 22:06:03,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-27 22:06:03,424 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 466 flow [2024-06-27 22:06:03,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:03,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:03,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:03,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:06:03,425 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:03,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1635690902, now seen corresponding path program 1 times [2024-06-27 22:06:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:03,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937631420] [2024-06-27 22:06:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:04,777 INFO 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 22:06:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937631420] [2024-06-27 22:06:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937631420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:06:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175702101] [2024-06-27 22:06:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:06:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:06:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:06:04,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:04,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 466 flow. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 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 22:06:04,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:04,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:04,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:05,240 INFO L124 PetriNetUnfolderBase]: 507/928 cut-off events. [2024-06-27 22:06:05,240 INFO L125 PetriNetUnfolderBase]: For 3142/3142 co-relation queries the response was YES. [2024-06-27 22:06:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 928 events. 507/928 cut-off events. For 3142/3142 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4721 event pairs, 44 based on Foata normal form. 4/920 useless extension candidates. Maximal degree in co-relation 3285. Up to 690 conditions per place. [2024-06-27 22:06:05,246 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 74 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-27 22:06:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 792 flow [2024-06-27 22:06:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:06:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:06:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:06:05,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:06:05,247 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 466 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:06:05,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 792 flow [2024-06-27 22:06:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 770 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:05,252 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 490 flow [2024-06-27 22:06:05,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=490, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-06-27 22:06:05,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-27 22:06:05,253 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 490 flow [2024-06-27 22:06:05,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 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 22:06:05,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:05,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:05,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:06:05,254 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:05,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1910539703, now seen corresponding path program 3 times [2024-06-27 22:06:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667570645] [2024-06-27 22:06:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:06,407 INFO 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 22:06:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667570645] [2024-06-27 22:06:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667570645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:06,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:06,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111271841] [2024-06-27 22:06:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:06,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:06,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:06,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:06,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:06,863 INFO L124 PetriNetUnfolderBase]: 639/1226 cut-off events. [2024-06-27 22:06:06,864 INFO L125 PetriNetUnfolderBase]: For 3904/3910 co-relation queries the response was YES. [2024-06-27 22:06:06,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 1226 events. 639/1226 cut-off events. For 3904/3910 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6728 event pairs, 180 based on Foata normal form. 7/1196 useless extension candidates. Maximal degree in co-relation 4156. Up to 1001 conditions per place. [2024-06-27 22:06:06,872 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 69 selfloop transitions, 30 changer transitions 0/109 dead transitions. [2024-06-27 22:06:06,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 917 flow [2024-06-27 22:06:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-27 22:06:06,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2024-06-27 22:06:06,874 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 490 flow. Second operand 6 states and 119 transitions. [2024-06-27 22:06:06,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 917 flow [2024-06-27 22:06:06,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 824 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:06:06,879 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 696 flow [2024-06-27 22:06:06,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=696, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-06-27 22:06:06,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-27 22:06:06,880 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 696 flow [2024-06-27 22:06:06,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:06,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:06,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:06:06,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:06,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1347214268, now seen corresponding path program 1 times [2024-06-27 22:06:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:06,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358184544] [2024-06-27 22:06:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:06,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:07,983 INFO 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 22:06:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:07,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358184544] [2024-06-27 22:06:07,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358184544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:07,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:07,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:07,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594754348] [2024-06-27 22:06:07,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:07,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:07,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:08,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:08,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 696 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:08,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:08,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:08,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:08,335 INFO L124 PetriNetUnfolderBase]: 718/1327 cut-off events. [2024-06-27 22:06:08,335 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-06-27 22:06:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 1327 events. 718/1327 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7166 event pairs, 148 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 4754. Up to 1072 conditions per place. [2024-06-27 22:06:08,344 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 82 selfloop transitions, 32 changer transitions 0/121 dead transitions. [2024-06-27 22:06:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 121 transitions, 1074 flow [2024-06-27 22:06:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:06:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:08,346 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 696 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:06:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 121 transitions, 1074 flow [2024-06-27 22:06:08,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 1039 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:08,353 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 804 flow [2024-06-27 22:06:08,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2024-06-27 22:06:08,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-27 22:06:08,354 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 804 flow [2024-06-27 22:06:08,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:08,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:08,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:06:08,354 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:08,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:08,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1870696076, now seen corresponding path program 1 times [2024-06-27 22:06:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947729954] [2024-06-27 22:06:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:08,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:09,454 INFO 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 22:06:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947729954] [2024-06-27 22:06:09,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947729954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:09,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:09,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:09,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985005141] [2024-06-27 22:06:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:09,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:09,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:09,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:09,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:09,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:09,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:09,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:09,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:10,008 INFO L124 PetriNetUnfolderBase]: 752/1434 cut-off events. [2024-06-27 22:06:10,008 INFO L125 PetriNetUnfolderBase]: For 6470/6504 co-relation queries the response was YES. [2024-06-27 22:06:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 1434 events. 752/1434 cut-off events. For 6470/6504 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8107 event pairs, 203 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 5249. Up to 1076 conditions per place. [2024-06-27 22:06:10,018 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 90 selfloop transitions, 31 changer transitions 0/134 dead transitions. [2024-06-27 22:06:10,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 1208 flow [2024-06-27 22:06:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 22:06:10,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112781954887218 [2024-06-27 22:06:10,020 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 804 flow. Second operand 7 states and 136 transitions. [2024-06-27 22:06:10,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 1208 flow [2024-06-27 22:06:10,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 1166 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:10,030 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 894 flow [2024-06-27 22:06:10,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2024-06-27 22:06:10,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-27 22:06:10,030 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 894 flow [2024-06-27 22:06:10,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:10,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:10,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:06:10,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1347034778, now seen corresponding path program 2 times [2024-06-27 22:06:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:10,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688065577] [2024-06-27 22:06:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:11,123 INFO 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 22:06:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688065577] [2024-06-27 22:06:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688065577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703823082] [2024-06-27 22:06:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:11,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:11,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:11,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 894 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:11,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:11,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:11,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:11,472 INFO L124 PetriNetUnfolderBase]: 801/1475 cut-off events. [2024-06-27 22:06:11,472 INFO L125 PetriNetUnfolderBase]: For 7678/7678 co-relation queries the response was YES. [2024-06-27 22:06:11,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5999 conditions, 1475 events. 801/1475 cut-off events. For 7678/7678 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8115 event pairs, 161 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 5955. Up to 1195 conditions per place. [2024-06-27 22:06:11,481 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 97 selfloop transitions, 30 changer transitions 0/134 dead transitions. [2024-06-27 22:06:11,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 1298 flow [2024-06-27 22:06:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:06:11,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:11,482 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 894 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:06:11,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 1298 flow [2024-06-27 22:06:11,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1275 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:11,498 INFO L231 Difference]: Finished difference. Result has 100 places, 107 transitions, 957 flow [2024-06-27 22:06:11,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=957, PETRI_PLACES=100, PETRI_TRANSITIONS=107} [2024-06-27 22:06:11,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-27 22:06:11,499 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 107 transitions, 957 flow [2024-06-27 22:06:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:11,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:11,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:11,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:06:11,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:11,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2138046980, now seen corresponding path program 2 times [2024-06-27 22:06:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237710385] [2024-06-27 22:06:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:12,550 INFO 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 22:06:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237710385] [2024-06-27 22:06:12,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237710385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:12,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022554432] [2024-06-27 22:06:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:12,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:12,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 107 transitions, 957 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:12,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:12,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:12,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:12,966 INFO L124 PetriNetUnfolderBase]: 794/1511 cut-off events. [2024-06-27 22:06:12,967 INFO L125 PetriNetUnfolderBase]: For 8604/8638 co-relation queries the response was YES. [2024-06-27 22:06:12,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 1511 events. 794/1511 cut-off events. For 8604/8638 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8654 event pairs, 206 based on Foata normal form. 31/1494 useless extension candidates. Maximal degree in co-relation 6015. Up to 1178 conditions per place. [2024-06-27 22:06:12,980 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 99 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-06-27 22:06:12,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 1337 flow [2024-06-27 22:06:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:06:12,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-06-27 22:06:12,982 INFO L175 Difference]: Start difference. First operand has 100 places, 107 transitions, 957 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:06:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 1337 flow [2024-06-27 22:06:12,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 1286 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:13,000 INFO L231 Difference]: Finished difference. Result has 103 places, 109 transitions, 975 flow [2024-06-27 22:06:13,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=975, PETRI_PLACES=103, PETRI_TRANSITIONS=109} [2024-06-27 22:06:13,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-27 22:06:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 109 transitions, 975 flow [2024-06-27 22:06:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:06:13,002 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:13,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1082260058, now seen corresponding path program 3 times [2024-06-27 22:06:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605868141] [2024-06-27 22:06:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:13,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:13,995 INFO 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 22:06:13,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:13,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605868141] [2024-06-27 22:06:13,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605868141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:13,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609679802] [2024-06-27 22:06:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:13,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:14,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:14,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 109 transitions, 975 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:14,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:14,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:14,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:14,369 INFO L124 PetriNetUnfolderBase]: 832/1554 cut-off events. [2024-06-27 22:06:14,369 INFO L125 PetriNetUnfolderBase]: For 9399/9399 co-relation queries the response was YES. [2024-06-27 22:06:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6364 conditions, 1554 events. 832/1554 cut-off events. For 9399/9399 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8742 event pairs, 209 based on Foata normal form. 1/1506 useless extension candidates. Maximal degree in co-relation 6316. Up to 1315 conditions per place. [2024-06-27 22:06:14,379 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 103 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2024-06-27 22:06:14,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 1281 flow [2024-06-27 22:06:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:06:14,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:06:14,380 INFO L175 Difference]: Start difference. First operand has 103 places, 109 transitions, 975 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:06:14,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 1281 flow [2024-06-27 22:06:14,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 128 transitions, 1211 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:14,395 INFO L231 Difference]: Finished difference. Result has 104 places, 109 transitions, 948 flow [2024-06-27 22:06:14,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=948, PETRI_PLACES=104, PETRI_TRANSITIONS=109} [2024-06-27 22:06:14,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-27 22:06:14,396 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 109 transitions, 948 flow [2024-06-27 22:06:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:14,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:14,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:06:14,397 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:14,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1492310696, now seen corresponding path program 3 times [2024-06-27 22:06:14,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:14,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299483849] [2024-06-27 22:06:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:15,467 INFO 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 22:06:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299483849] [2024-06-27 22:06:15,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299483849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:15,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756913543] [2024-06-27 22:06:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:15,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:15,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:15,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:15,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:15,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 109 transitions, 948 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:15,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:15,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:15,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:15,971 INFO L124 PetriNetUnfolderBase]: 786/1499 cut-off events. [2024-06-27 22:06:15,972 INFO L125 PetriNetUnfolderBase]: For 9079/9113 co-relation queries the response was YES. [2024-06-27 22:06:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5925 conditions, 1499 events. 786/1499 cut-off events. For 9079/9113 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8565 event pairs, 204 based on Foata normal form. 31/1482 useless extension candidates. Maximal degree in co-relation 5877. Up to 1218 conditions per place. [2024-06-27 22:06:15,980 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 98 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-06-27 22:06:15,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 1230 flow [2024-06-27 22:06:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 22:06:15,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:15,982 INFO L175 Difference]: Start difference. First operand has 104 places, 109 transitions, 948 flow. Second operand 7 states and 126 transitions. [2024-06-27 22:06:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 1230 flow [2024-06-27 22:06:15,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 1189 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:15,995 INFO L231 Difference]: Finished difference. Result has 106 places, 109 transitions, 942 flow [2024-06-27 22:06:15,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=942, PETRI_PLACES=106, PETRI_TRANSITIONS=109} [2024-06-27 22:06:15,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-27 22:06:15,996 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 109 transitions, 942 flow [2024-06-27 22:06:15,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:15,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:15,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:15,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:06:15,997 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:15,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash 529443540, now seen corresponding path program 4 times [2024-06-27 22:06:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:15,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087811208] [2024-06-27 22:06:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:17,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087811208] [2024-06-27 22:06:17,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087811208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:17,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:17,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:17,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133624806] [2024-06-27 22:06:17,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:17,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:17,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:17,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 109 transitions, 942 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:17,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:17,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:17,865 INFO L124 PetriNetUnfolderBase]: 867/1700 cut-off events. [2024-06-27 22:06:17,865 INFO L125 PetriNetUnfolderBase]: For 9956/9956 co-relation queries the response was YES. [2024-06-27 22:06:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 1700 events. 867/1700 cut-off events. For 9956/9956 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9865 event pairs, 196 based on Foata normal form. 1/1630 useless extension candidates. Maximal degree in co-relation 6560. Up to 1266 conditions per place. [2024-06-27 22:06:17,875 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 101 selfloop transitions, 57 changer transitions 0/165 dead transitions. [2024-06-27 22:06:17,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 165 transitions, 1639 flow [2024-06-27 22:06:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:06:17,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-27 22:06:17,876 INFO L175 Difference]: Start difference. First operand has 106 places, 109 transitions, 942 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:06:17,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 165 transitions, 1639 flow [2024-06-27 22:06:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 1596 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:17,892 INFO L231 Difference]: Finished difference. Result has 109 places, 140 transitions, 1345 flow [2024-06-27 22:06:17,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1345, PETRI_PLACES=109, PETRI_TRANSITIONS=140} [2024-06-27 22:06:17,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-27 22:06:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 140 transitions, 1345 flow [2024-06-27 22:06:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:17,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:06:17,893 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:17,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 902632832, now seen corresponding path program 5 times [2024-06-27 22:06:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810878805] [2024-06-27 22:06:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:19,244 INFO 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 22:06:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:19,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810878805] [2024-06-27 22:06:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810878805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:19,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:19,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272315906] [2024-06-27 22:06:19,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:19,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:19,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 140 transitions, 1345 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:19,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:19,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:19,814 INFO L124 PetriNetUnfolderBase]: 903/1757 cut-off events. [2024-06-27 22:06:19,815 INFO L125 PetriNetUnfolderBase]: For 11990/11990 co-relation queries the response was YES. [2024-06-27 22:06:19,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 1757 events. 903/1757 cut-off events. For 11990/11990 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10213 event pairs, 200 based on Foata normal form. 1/1687 useless extension candidates. Maximal degree in co-relation 7405. Up to 1306 conditions per place. [2024-06-27 22:06:19,825 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 102 selfloop transitions, 77 changer transitions 0/186 dead transitions. [2024-06-27 22:06:19,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 2112 flow [2024-06-27 22:06:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:06:19,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-27 22:06:19,826 INFO L175 Difference]: Start difference. First operand has 109 places, 140 transitions, 1345 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:06:19,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 2112 flow [2024-06-27 22:06:19,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 186 transitions, 1973 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:19,849 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1712 flow [2024-06-27 22:06:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1712, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2024-06-27 22:06:19,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-27 22:06:19,849 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1712 flow [2024-06-27 22:06:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:19,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:19,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:19,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:06:19,850 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:19,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash 924060032, now seen corresponding path program 6 times [2024-06-27 22:06:19,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:19,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20551502] [2024-06-27 22:06:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20551502] [2024-06-27 22:06:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20551502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:21,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438880270] [2024-06-27 22:06:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:21,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:21,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1712 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:21,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:21,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:21,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:21,729 INFO L124 PetriNetUnfolderBase]: 905/1759 cut-off events. [2024-06-27 22:06:21,730 INFO L125 PetriNetUnfolderBase]: For 12754/12754 co-relation queries the response was YES. [2024-06-27 22:06:21,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7702 conditions, 1759 events. 905/1759 cut-off events. For 12754/12754 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10187 event pairs, 198 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 7646. Up to 1309 conditions per place. [2024-06-27 22:06:21,740 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 102 selfloop transitions, 81 changer transitions 0/190 dead transitions. [2024-06-27 22:06:21,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 2218 flow [2024-06-27 22:06:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:06:21,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-06-27 22:06:21,742 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1712 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:06:21,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 2218 flow [2024-06-27 22:06:21,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 190 transitions, 2129 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:21,766 INFO L231 Difference]: Finished difference. Result has 122 places, 168 transitions, 1839 flow [2024-06-27 22:06:21,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1839, PETRI_PLACES=122, PETRI_TRANSITIONS=168} [2024-06-27 22:06:21,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-27 22:06:21,767 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 168 transitions, 1839 flow [2024-06-27 22:06:21,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:06:21,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:21,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:21,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:06:21,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:21,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash 902812570, now seen corresponding path program 4 times [2024-06-27 22:06:21,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:21,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067356101] [2024-06-27 22:06:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:23,161 INFO 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 22:06:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067356101] [2024-06-27 22:06:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067356101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:23,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:23,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:23,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484656187] [2024-06-27 22:06:23,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:23,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:23,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 168 transitions, 1839 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:23,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:23,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:23,822 INFO L124 PetriNetUnfolderBase]: 865/1727 cut-off events. [2024-06-27 22:06:23,822 INFO L125 PetriNetUnfolderBase]: For 13288/13288 co-relation queries the response was YES. [2024-06-27 22:06:23,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 1727 events. 865/1727 cut-off events. For 13288/13288 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10284 event pairs, 199 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 7345. Up to 1258 conditions per place. [2024-06-27 22:06:23,833 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 121 selfloop transitions, 44 changer transitions 0/203 dead transitions. [2024-06-27 22:06:23,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 203 transitions, 2343 flow [2024-06-27 22:06:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:06:23,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:06:23,857 INFO L175 Difference]: Start difference. First operand has 122 places, 168 transitions, 1839 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:06:23,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 203 transitions, 2343 flow [2024-06-27 22:06:23,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 2215 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:23,881 INFO L231 Difference]: Finished difference. Result has 126 places, 183 transitions, 1939 flow [2024-06-27 22:06:23,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1939, PETRI_PLACES=126, PETRI_TRANSITIONS=183} [2024-06-27 22:06:23,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 22:06:23,881 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 183 transitions, 1939 flow [2024-06-27 22:06:23,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:23,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:23,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:06:23,882 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:23,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1185881924, now seen corresponding path program 1 times [2024-06-27 22:06:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221115273] [2024-06-27 22:06:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221115273] [2024-06-27 22:06:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221115273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:25,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440812460] [2024-06-27 22:06:25,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:25,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:25,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:25,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 183 transitions, 1939 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:25,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:25,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:25,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:25,448 INFO L124 PetriNetUnfolderBase]: 946/1715 cut-off events. [2024-06-27 22:06:25,448 INFO L125 PetriNetUnfolderBase]: For 15888/15888 co-relation queries the response was YES. [2024-06-27 22:06:25,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 1715 events. 946/1715 cut-off events. For 15888/15888 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9582 event pairs, 175 based on Foata normal form. 1/1671 useless extension candidates. Maximal degree in co-relation 8156. Up to 1378 conditions per place. [2024-06-27 22:06:25,459 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 149 selfloop transitions, 63 changer transitions 0/219 dead transitions. [2024-06-27 22:06:25,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 219 transitions, 2625 flow [2024-06-27 22:06:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 22:06:25,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-06-27 22:06:25,460 INFO L175 Difference]: Start difference. First operand has 126 places, 183 transitions, 1939 flow. Second operand 9 states and 149 transitions. [2024-06-27 22:06:25,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 219 transitions, 2625 flow [2024-06-27 22:06:25,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 219 transitions, 2577 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:25,490 INFO L231 Difference]: Finished difference. Result has 136 places, 198 transitions, 2249 flow [2024-06-27 22:06:25,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2249, PETRI_PLACES=136, PETRI_TRANSITIONS=198} [2024-06-27 22:06:25,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-27 22:06:25,491 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 198 transitions, 2249 flow [2024-06-27 22:06:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:25,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:25,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:06:25,493 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:25,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 505744724, now seen corresponding path program 2 times [2024-06-27 22:06:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953687045] [2024-06-27 22:06:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953687045] [2024-06-27 22:06:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953687045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947023002] [2024-06-27 22:06:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:26,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:26,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 198 transitions, 2249 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:26,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:26,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:27,165 INFO L124 PetriNetUnfolderBase]: 954/1727 cut-off events. [2024-06-27 22:06:27,165 INFO L125 PetriNetUnfolderBase]: For 18048/18048 co-relation queries the response was YES. [2024-06-27 22:06:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8740 conditions, 1727 events. 954/1727 cut-off events. For 18048/18048 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9648 event pairs, 174 based on Foata normal form. 1/1683 useless extension candidates. Maximal degree in co-relation 8675. Up to 1387 conditions per place. [2024-06-27 22:06:27,176 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 157 selfloop transitions, 61 changer transitions 0/225 dead transitions. [2024-06-27 22:06:27,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 225 transitions, 2894 flow [2024-06-27 22:06:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:06:27,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:06:27,186 INFO L175 Difference]: Start difference. First operand has 136 places, 198 transitions, 2249 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:06:27,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 225 transitions, 2894 flow [2024-06-27 22:06:27,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 225 transitions, 2823 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:27,222 INFO L231 Difference]: Finished difference. Result has 142 places, 204 transitions, 2411 flow [2024-06-27 22:06:27,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2411, PETRI_PLACES=142, PETRI_TRANSITIONS=204} [2024-06-27 22:06:27,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-27 22:06:27,223 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 204 transitions, 2411 flow [2024-06-27 22:06:27,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:27,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:27,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:27,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:06:27,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:27,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1186031871, now seen corresponding path program 1 times [2024-06-27 22:06:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136333081] [2024-06-27 22:06:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:28,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136333081] [2024-06-27 22:06:28,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136333081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:28,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678336501] [2024-06-27 22:06:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:28,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:28,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 204 transitions, 2411 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:28,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:28,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:28,811 INFO L124 PetriNetUnfolderBase]: 972/1754 cut-off events. [2024-06-27 22:06:28,811 INFO L125 PetriNetUnfolderBase]: For 19806/19806 co-relation queries the response was YES. [2024-06-27 22:06:28,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 1754 events. 972/1754 cut-off events. For 19806/19806 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9815 event pairs, 180 based on Foata normal form. 1/1710 useless extension candidates. Maximal degree in co-relation 9019. Up to 1376 conditions per place. [2024-06-27 22:06:28,820 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 156 selfloop transitions, 69 changer transitions 0/232 dead transitions. [2024-06-27 22:06:28,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 232 transitions, 3064 flow [2024-06-27 22:06:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:06:28,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-27 22:06:28,822 INFO L175 Difference]: Start difference. First operand has 142 places, 204 transitions, 2411 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:06:28,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 232 transitions, 3064 flow [2024-06-27 22:06:28,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 232 transitions, 2988 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:28,858 INFO L231 Difference]: Finished difference. Result has 148 places, 212 transitions, 2592 flow [2024-06-27 22:06:28,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=148, PETRI_TRANSITIONS=212} [2024-06-27 22:06:28,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-27 22:06:28,858 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 212 transitions, 2592 flow [2024-06-27 22:06:28,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:28,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:28,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:06:28,859 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:28,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1364510089, now seen corresponding path program 2 times [2024-06-27 22:06:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:28,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363072182] [2024-06-27 22:06:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:28,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:30,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:30,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363072182] [2024-06-27 22:06:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363072182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:30,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:30,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954869373] [2024-06-27 22:06:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:30,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:30,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:30,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 212 transitions, 2592 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:30,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:30,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:30,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,700 INFO L124 PetriNetUnfolderBase]: 1073/1939 cut-off events. [2024-06-27 22:06:30,700 INFO L125 PetriNetUnfolderBase]: For 24490/24490 co-relation queries the response was YES. [2024-06-27 22:06:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 1939 events. 1073/1939 cut-off events. For 24490/24490 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11124 event pairs, 195 based on Foata normal form. 3/1890 useless extension candidates. Maximal degree in co-relation 10262. Up to 1266 conditions per place. [2024-06-27 22:06:30,713 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 195 selfloop transitions, 66 changer transitions 0/268 dead transitions. [2024-06-27 22:06:30,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 268 transitions, 3642 flow [2024-06-27 22:06:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:06:30,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:06:30,715 INFO L175 Difference]: Start difference. First operand has 148 places, 212 transitions, 2592 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:06:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 268 transitions, 3642 flow [2024-06-27 22:06:30,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 268 transitions, 3541 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:30,757 INFO L231 Difference]: Finished difference. Result has 152 places, 220 transitions, 2742 flow [2024-06-27 22:06:30,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2742, PETRI_PLACES=152, PETRI_TRANSITIONS=220} [2024-06-27 22:06:30,758 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-27 22:06:30,758 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 220 transitions, 2742 flow [2024-06-27 22:06:30,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:30,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:30,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:30,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:06:30,759 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:30,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1364517746, now seen corresponding path program 3 times [2024-06-27 22:06:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705499355] [2024-06-27 22:06:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:30,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:31,847 INFO 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 22:06:31,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705499355] [2024-06-27 22:06:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705499355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700203498] [2024-06-27 22:06:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:31,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:31,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 220 transitions, 2742 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:31,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:31,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:31,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:32,332 INFO L124 PetriNetUnfolderBase]: 1081/1955 cut-off events. [2024-06-27 22:06:32,333 INFO L125 PetriNetUnfolderBase]: For 25983/25983 co-relation queries the response was YES. [2024-06-27 22:06:32,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1955 events. 1081/1955 cut-off events. For 25983/25983 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11263 event pairs, 202 based on Foata normal form. 1/1903 useless extension candidates. Maximal degree in co-relation 10648. Up to 1579 conditions per place. [2024-06-27 22:06:32,348 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 176 selfloop transitions, 67 changer transitions 0/250 dead transitions. [2024-06-27 22:06:32,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 250 transitions, 3493 flow [2024-06-27 22:06:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 22:06:32,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-06-27 22:06:32,350 INFO L175 Difference]: Start difference. First operand has 152 places, 220 transitions, 2742 flow. Second operand 9 states and 149 transitions. [2024-06-27 22:06:32,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 250 transitions, 3493 flow [2024-06-27 22:06:32,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 250 transitions, 3425 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:32,401 INFO L231 Difference]: Finished difference. Result has 159 places, 229 transitions, 2959 flow [2024-06-27 22:06:32,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2959, PETRI_PLACES=159, PETRI_TRANSITIONS=229} [2024-06-27 22:06:32,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-27 22:06:32,404 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 229 transitions, 2959 flow [2024-06-27 22:06:32,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:32,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:32,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:32,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:06:32,405 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1364517529, now seen corresponding path program 3 times [2024-06-27 22:06:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478593661] [2024-06-27 22:06:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:33,568 INFO 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 22:06:33,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478593661] [2024-06-27 22:06:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478593661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:33,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027751791] [2024-06-27 22:06:33,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:33,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:33,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 229 transitions, 2959 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:33,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:33,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:33,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:34,017 INFO L124 PetriNetUnfolderBase]: 1079/1952 cut-off events. [2024-06-27 22:06:34,017 INFO L125 PetriNetUnfolderBase]: For 26892/26892 co-relation queries the response was YES. [2024-06-27 22:06:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 1952 events. 1079/1952 cut-off events. For 26892/26892 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11271 event pairs, 197 based on Foata normal form. 1/1900 useless extension candidates. Maximal degree in co-relation 10763. Up to 1535 conditions per place. [2024-06-27 22:06:34,031 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 175 selfloop transitions, 78 changer transitions 0/260 dead transitions. [2024-06-27 22:06:34,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 260 transitions, 3691 flow [2024-06-27 22:06:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:06:34,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-06-27 22:06:34,033 INFO L175 Difference]: Start difference. First operand has 159 places, 229 transitions, 2959 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:06:34,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 260 transitions, 3691 flow [2024-06-27 22:06:34,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 260 transitions, 3624 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:34,090 INFO L231 Difference]: Finished difference. Result has 163 places, 237 transitions, 3119 flow [2024-06-27 22:06:34,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3119, PETRI_PLACES=163, PETRI_TRANSITIONS=237} [2024-06-27 22:06:34,090 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-27 22:06:34,090 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 237 transitions, 3119 flow [2024-06-27 22:06:34,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:34,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:34,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:06:34,091 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:34,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1844855469, now seen corresponding path program 4 times [2024-06-27 22:06:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909963846] [2024-06-27 22:06:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:35,085 INFO 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 22:06:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909963846] [2024-06-27 22:06:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909963846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:35,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:35,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768425424] [2024-06-27 22:06:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:35,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:35,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:35,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:35,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:35,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 237 transitions, 3119 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:35,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:35,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:35,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:35,673 INFO L124 PetriNetUnfolderBase]: 1087/1961 cut-off events. [2024-06-27 22:06:35,673 INFO L125 PetriNetUnfolderBase]: For 28556/28556 co-relation queries the response was YES. [2024-06-27 22:06:35,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11016 conditions, 1961 events. 1087/1961 cut-off events. For 28556/28556 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11272 event pairs, 199 based on Foata normal form. 1/1909 useless extension candidates. Maximal degree in co-relation 10941. Up to 1703 conditions per place. [2024-06-27 22:06:35,686 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 232 selfloop transitions, 22 changer transitions 0/261 dead transitions. [2024-06-27 22:06:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 261 transitions, 3770 flow [2024-06-27 22:06:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 22:06:35,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:06:35,688 INFO L175 Difference]: Start difference. First operand has 163 places, 237 transitions, 3119 flow. Second operand 8 states and 132 transitions. [2024-06-27 22:06:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 261 transitions, 3770 flow [2024-06-27 22:06:35,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 261 transitions, 3684 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:35,744 INFO L231 Difference]: Finished difference. Result has 169 places, 244 transitions, 3183 flow [2024-06-27 22:06:35,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3183, PETRI_PLACES=169, PETRI_TRANSITIONS=244} [2024-06-27 22:06:35,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 22:06:35,744 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 244 transitions, 3183 flow [2024-06-27 22:06:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:35,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:35,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:06:35,745 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:35,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash 820131268, now seen corresponding path program 1 times [2024-06-27 22:06:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:35,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034663689] [2024-06-27 22:06:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:35,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:36,969 INFO 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 22:06:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:36,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034663689] [2024-06-27 22:06:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034663689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:36,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:36,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070630242] [2024-06-27 22:06:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:37,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:37,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 244 transitions, 3183 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:37,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:37,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:37,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:37,619 INFO L124 PetriNetUnfolderBase]: 1046/1942 cut-off events. [2024-06-27 22:06:37,619 INFO L125 PetriNetUnfolderBase]: For 29620/29620 co-relation queries the response was YES. [2024-06-27 22:06:37,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 1942 events. 1046/1942 cut-off events. For 29620/29620 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11483 event pairs, 176 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 10567. Up to 1498 conditions per place. [2024-06-27 22:06:37,635 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 208 selfloop transitions, 20 changer transitions 0/274 dead transitions. [2024-06-27 22:06:37,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 274 transitions, 3791 flow [2024-06-27 22:06:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:06:37,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 22:06:37,636 INFO L175 Difference]: Start difference. First operand has 169 places, 244 transitions, 3183 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:06:37,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 274 transitions, 3791 flow [2024-06-27 22:06:37,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 274 transitions, 3725 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:37,698 INFO L231 Difference]: Finished difference. Result has 172 places, 248 transitions, 3210 flow [2024-06-27 22:06:37,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3210, PETRI_PLACES=172, PETRI_TRANSITIONS=248} [2024-06-27 22:06:37,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-27 22:06:37,699 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 248 transitions, 3210 flow [2024-06-27 22:06:37,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:37,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:37,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:06:37,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:37,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 809677572, now seen corresponding path program 4 times [2024-06-27 22:06:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:37,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377758976] [2024-06-27 22:06:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:38,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:38,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377758976] [2024-06-27 22:06:38,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377758976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:38,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:38,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357945029] [2024-06-27 22:06:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:38,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:38,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 248 transitions, 3210 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:38,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:38,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:39,274 INFO L124 PetriNetUnfolderBase]: 1107/1993 cut-off events. [2024-06-27 22:06:39,274 INFO L125 PetriNetUnfolderBase]: For 31444/31444 co-relation queries the response was YES. [2024-06-27 22:06:39,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11366 conditions, 1993 events. 1107/1993 cut-off events. For 31444/31444 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11511 event pairs, 204 based on Foata normal form. 1/1941 useless extension candidates. Maximal degree in co-relation 11288. Up to 1728 conditions per place. [2024-06-27 22:06:39,290 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 236 selfloop transitions, 28 changer transitions 0/271 dead transitions. [2024-06-27 22:06:39,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 271 transitions, 3911 flow [2024-06-27 22:06:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 22:06:39,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:06:39,293 INFO L175 Difference]: Start difference. First operand has 172 places, 248 transitions, 3210 flow. Second operand 8 states and 132 transitions. [2024-06-27 22:06:39,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 271 transitions, 3911 flow [2024-06-27 22:06:39,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 271 transitions, 3864 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:39,357 INFO L231 Difference]: Finished difference. Result has 178 places, 254 transitions, 3357 flow [2024-06-27 22:06:39,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3357, PETRI_PLACES=178, PETRI_TRANSITIONS=254} [2024-06-27 22:06:39,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-06-27 22:06:39,358 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 254 transitions, 3357 flow [2024-06-27 22:06:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:39,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:39,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:06:39,359 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:39,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash 809677789, now seen corresponding path program 5 times [2024-06-27 22:06:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:39,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845294646] [2024-06-27 22:06:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:39,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:40,455 INFO 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 22:06:40,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:40,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845294646] [2024-06-27 22:06:40,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845294646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:40,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:40,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548077544] [2024-06-27 22:06:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:40,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:40,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 254 transitions, 3357 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:40,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:40,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:40,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:41,015 INFO L124 PetriNetUnfolderBase]: 1115/2005 cut-off events. [2024-06-27 22:06:41,015 INFO L125 PetriNetUnfolderBase]: For 32995/32995 co-relation queries the response was YES. [2024-06-27 22:06:41,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11445 conditions, 2005 events. 1115/2005 cut-off events. For 32995/32995 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11574 event pairs, 202 based on Foata normal form. 1/1953 useless extension candidates. Maximal degree in co-relation 11363. Up to 1696 conditions per place. [2024-06-27 22:06:41,033 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 224 selfloop transitions, 46 changer transitions 0/277 dead transitions. [2024-06-27 22:06:41,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 277 transitions, 4082 flow [2024-06-27 22:06:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:06:41,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:06:41,035 INFO L175 Difference]: Start difference. First operand has 178 places, 254 transitions, 3357 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:06:41,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 277 transitions, 4082 flow [2024-06-27 22:06:41,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 277 transitions, 4052 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:41,118 INFO L231 Difference]: Finished difference. Result has 183 places, 257 transitions, 3462 flow [2024-06-27 22:06:41,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3462, PETRI_PLACES=183, PETRI_TRANSITIONS=257} [2024-06-27 22:06:41,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-27 22:06:41,119 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 257 transitions, 3462 flow [2024-06-27 22:06:41,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:41,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:41,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:41,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:06:41,120 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:41,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 809685229, now seen corresponding path program 6 times [2024-06-27 22:06:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:41,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141660760] [2024-06-27 22:06:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:42,155 INFO 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 22:06:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:42,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141660760] [2024-06-27 22:06:42,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141660760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:42,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:42,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586104050] [2024-06-27 22:06:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:42,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:42,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:42,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 257 transitions, 3462 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:42,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:42,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:42,732 INFO L124 PetriNetUnfolderBase]: 1113/2002 cut-off events. [2024-06-27 22:06:42,732 INFO L125 PetriNetUnfolderBase]: For 34092/34092 co-relation queries the response was YES. [2024-06-27 22:06:42,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11518 conditions, 2002 events. 1113/2002 cut-off events. For 34092/34092 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11545 event pairs, 212 based on Foata normal form. 1/1950 useless extension candidates. Maximal degree in co-relation 11435. Up to 1694 conditions per place. [2024-06-27 22:06:42,748 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 227 selfloop transitions, 44 changer transitions 0/278 dead transitions. [2024-06-27 22:06:42,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 278 transitions, 4107 flow [2024-06-27 22:06:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:06:42,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:06:42,750 INFO L175 Difference]: Start difference. First operand has 183 places, 257 transitions, 3462 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:06:42,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 278 transitions, 4107 flow [2024-06-27 22:06:42,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 278 transitions, 4038 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:42,822 INFO L231 Difference]: Finished difference. Result has 187 places, 257 transitions, 3488 flow [2024-06-27 22:06:42,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3488, PETRI_PLACES=187, PETRI_TRANSITIONS=257} [2024-06-27 22:06:42,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2024-06-27 22:06:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 257 transitions, 3488 flow [2024-06-27 22:06:42,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:42,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:42,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:06:42,823 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:42,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -274231284, now seen corresponding path program 5 times [2024-06-27 22:06:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309347416] [2024-06-27 22:06:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:43,958 INFO 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 22:06:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309347416] [2024-06-27 22:06:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309347416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:43,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:43,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247341037] [2024-06-27 22:06:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:44,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:44,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 257 transitions, 3488 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:44,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:44,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:44,616 INFO L124 PetriNetUnfolderBase]: 1158/2187 cut-off events. [2024-06-27 22:06:44,616 INFO L125 PetriNetUnfolderBase]: For 36258/36258 co-relation queries the response was YES. [2024-06-27 22:06:44,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 2187 events. 1158/2187 cut-off events. For 36258/36258 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13115 event pairs, 204 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 11953. Up to 1572 conditions per place. [2024-06-27 22:06:44,633 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 168 selfloop transitions, 142 changer transitions 0/317 dead transitions. [2024-06-27 22:06:44,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 317 transitions, 4587 flow [2024-06-27 22:06:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:06:44,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032894736842105 [2024-06-27 22:06:44,635 INFO L175 Difference]: Start difference. First operand has 187 places, 257 transitions, 3488 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:06:44,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 317 transitions, 4587 flow [2024-06-27 22:06:44,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 317 transitions, 4460 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:44,710 INFO L231 Difference]: Finished difference. Result has 190 places, 289 transitions, 4050 flow [2024-06-27 22:06:44,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3361, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4050, PETRI_PLACES=190, PETRI_TRANSITIONS=289} [2024-06-27 22:06:44,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-27 22:06:44,711 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 289 transitions, 4050 flow [2024-06-27 22:06:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:44,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:44,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:06:44,712 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash -788515882, now seen corresponding path program 6 times [2024-06-27 22:06:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290086662] [2024-06-27 22:06:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290086662] [2024-06-27 22:06:46,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290086662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:46,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:46,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699018678] [2024-06-27 22:06:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:46,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:46,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:46,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:46,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:46,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:46,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 289 transitions, 4050 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:46,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:46,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:46,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:46,796 INFO L124 PetriNetUnfolderBase]: 1221/2286 cut-off events. [2024-06-27 22:06:46,797 INFO L125 PetriNetUnfolderBase]: For 41051/41051 co-relation queries the response was YES. [2024-06-27 22:06:46,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13326 conditions, 2286 events. 1221/2286 cut-off events. For 41051/41051 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13760 event pairs, 216 based on Foata normal form. 1/2208 useless extension candidates. Maximal degree in co-relation 13241. Up to 1639 conditions per place. [2024-06-27 22:06:46,814 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 179 selfloop transitions, 165 changer transitions 0/351 dead transitions. [2024-06-27 22:06:46,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 351 transitions, 5452 flow [2024-06-27 22:06:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:06:46,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:06:46,816 INFO L175 Difference]: Start difference. First operand has 190 places, 289 transitions, 4050 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:06:46,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 351 transitions, 5452 flow [2024-06-27 22:06:46,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 351 transitions, 5135 flow, removed 104 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:46,922 INFO L231 Difference]: Finished difference. Result has 198 places, 324 transitions, 4657 flow [2024-06-27 22:06:46,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4657, PETRI_PLACES=198, PETRI_TRANSITIONS=324} [2024-06-27 22:06:46,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-27 22:06:46,923 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 324 transitions, 4657 flow [2024-06-27 22:06:46,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:46,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:46,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:06:46,923 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:46,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -767118442, now seen corresponding path program 7 times [2024-06-27 22:06:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668316789] [2024-06-27 22:06:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:48,183 INFO 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 22:06:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668316789] [2024-06-27 22:06:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668316789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:48,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394960568] [2024-06-27 22:06:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:48,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:48,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 324 transitions, 4657 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:48,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:48,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:48,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:48,933 INFO L124 PetriNetUnfolderBase]: 1227/2294 cut-off events. [2024-06-27 22:06:48,934 INFO L125 PetriNetUnfolderBase]: For 41995/41995 co-relation queries the response was YES. [2024-06-27 22:06:48,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13726 conditions, 2294 events. 1227/2294 cut-off events. For 41995/41995 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13769 event pairs, 215 based on Foata normal form. 1/2215 useless extension candidates. Maximal degree in co-relation 13636. Up to 1647 conditions per place. [2024-06-27 22:06:49,001 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 182 selfloop transitions, 169 changer transitions 0/358 dead transitions. [2024-06-27 22:06:49,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 5631 flow [2024-06-27 22:06:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:06:49,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:06:49,006 INFO L175 Difference]: Start difference. First operand has 198 places, 324 transitions, 4657 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:06:49,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 5631 flow [2024-06-27 22:06:49,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 358 transitions, 5439 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:49,125 INFO L231 Difference]: Finished difference. Result has 203 places, 331 transitions, 4905 flow [2024-06-27 22:06:49,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4905, PETRI_PLACES=203, PETRI_TRANSITIONS=331} [2024-06-27 22:06:49,125 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2024-06-27 22:06:49,125 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 331 transitions, 4905 flow [2024-06-27 22:06:49,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:49,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:49,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:49,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:06:49,126 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:49,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -788365935, now seen corresponding path program 7 times [2024-06-27 22:06:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:49,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165446311] [2024-06-27 22:06:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165446311] [2024-06-27 22:06:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165446311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941804471] [2024-06-27 22:06:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:50,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:50,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 331 transitions, 4905 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:50,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:50,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:50,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:51,278 INFO L124 PetriNetUnfolderBase]: 1267/2357 cut-off events. [2024-06-27 22:06:51,279 INFO L125 PetriNetUnfolderBase]: For 45033/45033 co-relation queries the response was YES. [2024-06-27 22:06:51,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 2357 events. 1267/2357 cut-off events. For 45033/45033 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14179 event pairs, 219 based on Foata normal form. 1/2279 useless extension candidates. Maximal degree in co-relation 14042. Up to 1711 conditions per place. [2024-06-27 22:06:51,297 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 222 selfloop transitions, 158 changer transitions 0/387 dead transitions. [2024-06-27 22:06:51,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 387 transitions, 6131 flow [2024-06-27 22:06:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:51,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:51,299 INFO L175 Difference]: Start difference. First operand has 203 places, 331 transitions, 4905 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 387 transitions, 6131 flow [2024-06-27 22:06:51,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 387 transitions, 5862 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:51,416 INFO L231 Difference]: Finished difference. Result has 207 places, 362 transitions, 5337 flow [2024-06-27 22:06:51,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5337, PETRI_PLACES=207, PETRI_TRANSITIONS=362} [2024-06-27 22:06:51,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-27 22:06:51,417 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 362 transitions, 5337 flow [2024-06-27 22:06:51,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:51,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:51,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:51,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:06:51,418 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:51,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2083302008, now seen corresponding path program 8 times [2024-06-27 22:06:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762897136] [2024-06-27 22:06:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:52,975 INFO 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 22:06:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:52,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762897136] [2024-06-27 22:06:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762897136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:52,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:52,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:52,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099178496] [2024-06-27 22:06:52,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:52,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:53,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:53,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 362 transitions, 5337 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:53,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:53,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:53,817 INFO L124 PetriNetUnfolderBase]: 1319/2438 cut-off events. [2024-06-27 22:06:53,818 INFO L125 PetriNetUnfolderBase]: For 48516/48516 co-relation queries the response was YES. [2024-06-27 22:06:53,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15055 conditions, 2438 events. 1319/2438 cut-off events. For 48516/48516 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14735 event pairs, 238 based on Foata normal form. 1/2359 useless extension candidates. Maximal degree in co-relation 14962. Up to 1765 conditions per place. [2024-06-27 22:06:53,839 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 205 changer transitions 0/424 dead transitions. [2024-06-27 22:06:53,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 424 transitions, 6799 flow [2024-06-27 22:06:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:53,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:53,841 INFO L175 Difference]: Start difference. First operand has 207 places, 362 transitions, 5337 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:53,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 424 transitions, 6799 flow [2024-06-27 22:06:53,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 424 transitions, 6673 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:53,967 INFO L231 Difference]: Finished difference. Result has 215 places, 401 transitions, 6202 flow [2024-06-27 22:06:53,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6202, PETRI_PLACES=215, PETRI_TRANSITIONS=401} [2024-06-27 22:06:53,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-27 22:06:53,967 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 401 transitions, 6202 flow [2024-06-27 22:06:53,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:53,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:53,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:53,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:06:53,968 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:53,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2083152061, now seen corresponding path program 8 times [2024-06-27 22:06:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:53,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132512188] [2024-06-27 22:06:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:55,465 INFO 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 22:06:55,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:55,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132512188] [2024-06-27 22:06:55,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132512188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:55,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:55,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:55,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921994137] [2024-06-27 22:06:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:55,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:55,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:55,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 401 transitions, 6202 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:55,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:55,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:56,263 INFO L124 PetriNetUnfolderBase]: 1359/2500 cut-off events. [2024-06-27 22:06:56,263 INFO L125 PetriNetUnfolderBase]: For 51402/51402 co-relation queries the response was YES. [2024-06-27 22:06:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15975 conditions, 2500 events. 1359/2500 cut-off events. For 51402/51402 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15210 event pairs, 233 based on Foata normal form. 1/2422 useless extension candidates. Maximal degree in co-relation 15878. Up to 1838 conditions per place. [2024-06-27 22:06:56,286 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 264 selfloop transitions, 181 changer transitions 0/452 dead transitions. [2024-06-27 22:06:56,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 452 transitions, 7549 flow [2024-06-27 22:06:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:56,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:56,288 INFO L175 Difference]: Start difference. First operand has 215 places, 401 transitions, 6202 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:56,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 452 transitions, 7549 flow [2024-06-27 22:06:56,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 452 transitions, 7320 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:56,438 INFO L231 Difference]: Finished difference. Result has 221 places, 429 transitions, 6692 flow [2024-06-27 22:06:56,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5973, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6692, PETRI_PLACES=221, PETRI_TRANSITIONS=429} [2024-06-27 22:06:56,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-27 22:06:56,439 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 429 transitions, 6692 flow [2024-06-27 22:06:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:56,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:56,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:06:56,439 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2083152278, now seen corresponding path program 9 times [2024-06-27 22:06:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172445396] [2024-06-27 22:06:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:57,931 INFO 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 22:06:57,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172445396] [2024-06-27 22:06:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172445396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:57,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:57,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936464703] [2024-06-27 22:06:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:57,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:58,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:06:58,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 429 transitions, 6692 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:58,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:58,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:06:58,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:58,814 INFO L124 PetriNetUnfolderBase]: 1375/2525 cut-off events. [2024-06-27 22:06:58,814 INFO L125 PetriNetUnfolderBase]: For 54436/54436 co-relation queries the response was YES. [2024-06-27 22:06:58,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16330 conditions, 2525 events. 1375/2525 cut-off events. For 54436/54436 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15341 event pairs, 240 based on Foata normal form. 1/2446 useless extension candidates. Maximal degree in co-relation 16231. Up to 1844 conditions per place. [2024-06-27 22:06:58,838 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 246 selfloop transitions, 209 changer transitions 0/462 dead transitions. [2024-06-27 22:06:58,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 462 transitions, 7899 flow [2024-06-27 22:06:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:58,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:58,840 INFO L175 Difference]: Start difference. First operand has 221 places, 429 transitions, 6692 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:58,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 462 transitions, 7899 flow [2024-06-27 22:06:58,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 462 transitions, 7693 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:58,983 INFO L231 Difference]: Finished difference. Result has 226 places, 438 transitions, 7037 flow [2024-06-27 22:06:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6486, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7037, PETRI_PLACES=226, PETRI_TRANSITIONS=438} [2024-06-27 22:06:58,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-27 22:06:58,984 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 438 transitions, 7037 flow [2024-06-27 22:06:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:58,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:06:58,984 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:58,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1418901421, now seen corresponding path program 9 times [2024-06-27 22:06:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641599246] [2024-06-27 22:06:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:00,480 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 22:07:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641599246] [2024-06-27 22:07:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641599246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219556700] [2024-06-27 22:07:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:00,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:00,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:00,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 438 transitions, 7037 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:00,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:00,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:00,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:01,393 INFO L124 PetriNetUnfolderBase]: 1395/2555 cut-off events. [2024-06-27 22:07:01,393 INFO L125 PetriNetUnfolderBase]: For 57999/57999 co-relation queries the response was YES. [2024-06-27 22:07:01,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16680 conditions, 2555 events. 1395/2555 cut-off events. For 57999/57999 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15459 event pairs, 236 based on Foata normal form. 1/2476 useless extension candidates. Maximal degree in co-relation 16580. Up to 1886 conditions per place. [2024-06-27 22:07:01,418 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 272 selfloop transitions, 195 changer transitions 0/474 dead transitions. [2024-06-27 22:07:01,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 474 transitions, 8308 flow [2024-06-27 22:07:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:07:01,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:07:01,420 INFO L175 Difference]: Start difference. First operand has 226 places, 438 transitions, 7037 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:07:01,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 474 transitions, 8308 flow [2024-06-27 22:07:01,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 474 transitions, 7945 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:01,587 INFO L231 Difference]: Finished difference. Result has 229 places, 450 transitions, 7222 flow [2024-06-27 22:07:01,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6674, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7222, PETRI_PLACES=229, PETRI_TRANSITIONS=450} [2024-06-27 22:07:01,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 22:07:01,587 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 450 transitions, 7222 flow [2024-06-27 22:07:01,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:01,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:01,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:07:01,588 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:01,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2077580152, now seen corresponding path program 2 times [2024-06-27 22:07:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030419388] [2024-06-27 22:07:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:03,261 INFO 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 22:07:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030419388] [2024-06-27 22:07:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030419388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:03,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638355025] [2024-06-27 22:07:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:03,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:03,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 450 transitions, 7222 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:03,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:03,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:03,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:04,122 INFO L124 PetriNetUnfolderBase]: 1354/2514 cut-off events. [2024-06-27 22:07:04,122 INFO L125 PetriNetUnfolderBase]: For 61059/61138 co-relation queries the response was YES. [2024-06-27 22:07:04,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16091 conditions, 2514 events. 1354/2514 cut-off events. For 61059/61138 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15409 event pairs, 210 based on Foata normal form. 63/2495 useless extension candidates. Maximal degree in co-relation 15990. Up to 1805 conditions per place. [2024-06-27 22:07:04,147 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 353 selfloop transitions, 87 changer transitions 0/510 dead transitions. [2024-06-27 22:07:04,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 510 transitions, 8559 flow [2024-06-27 22:07:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:07:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:07:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:07:04,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:07:04,149 INFO L175 Difference]: Start difference. First operand has 229 places, 450 transitions, 7222 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:07:04,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 510 transitions, 8559 flow [2024-06-27 22:07:04,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 510 transitions, 8242 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:04,347 INFO L231 Difference]: Finished difference. Result has 239 places, 484 transitions, 7511 flow [2024-06-27 22:07:04,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6905, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7511, PETRI_PLACES=239, PETRI_TRANSITIONS=484} [2024-06-27 22:07:04,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-27 22:07:04,348 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 484 transitions, 7511 flow [2024-06-27 22:07:04,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:04,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:04,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:04,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:07:04,348 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:04,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2077588088, now seen corresponding path program 10 times [2024-06-27 22:07:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771307861] [2024-06-27 22:07:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:05,806 INFO 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 22:07:05,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:05,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771307861] [2024-06-27 22:07:05,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771307861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:05,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:05,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:05,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227831114] [2024-06-27 22:07:05,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:05,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:05,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:05,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:05,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:05,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 484 transitions, 7511 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:05,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:05,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:05,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:06,690 INFO L124 PetriNetUnfolderBase]: 1433/2613 cut-off events. [2024-06-27 22:07:06,691 INFO L125 PetriNetUnfolderBase]: For 62481/62481 co-relation queries the response was YES. [2024-06-27 22:07:06,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17310 conditions, 2613 events. 1433/2613 cut-off events. For 62481/62481 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15852 event pairs, 193 based on Foata normal form. 1/2533 useless extension candidates. Maximal degree in co-relation 17204. Up to 1931 conditions per place. [2024-06-27 22:07:06,715 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 289 selfloop transitions, 219 changer transitions 0/515 dead transitions. [2024-06-27 22:07:06,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 515 transitions, 8759 flow [2024-06-27 22:07:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:07:06,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 22:07:06,717 INFO L175 Difference]: Start difference. First operand has 239 places, 484 transitions, 7511 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:07:06,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 515 transitions, 8759 flow [2024-06-27 22:07:06,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 515 transitions, 8613 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:06,923 INFO L231 Difference]: Finished difference. Result has 245 places, 490 transitions, 7914 flow [2024-06-27 22:07:06,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7371, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7914, PETRI_PLACES=245, PETRI_TRANSITIONS=490} [2024-06-27 22:07:06,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-27 22:07:06,924 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 490 transitions, 7914 flow [2024-06-27 22:07:06,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:06,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:06,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:06,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:07:06,925 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:06,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2077587871, now seen corresponding path program 10 times [2024-06-27 22:07:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:06,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259010703] [2024-06-27 22:07:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:06,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:08,402 INFO 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 22:07:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:08,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259010703] [2024-06-27 22:07:08,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259010703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170992816] [2024-06-27 22:07:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:08,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:08,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 490 transitions, 7914 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:08,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:08,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:08,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:09,404 INFO L124 PetriNetUnfolderBase]: 1431/2611 cut-off events. [2024-06-27 22:07:09,404 INFO L125 PetriNetUnfolderBase]: For 63900/63900 co-relation queries the response was YES. [2024-06-27 22:07:09,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17505 conditions, 2611 events. 1431/2611 cut-off events. For 63900/63900 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15868 event pairs, 194 based on Foata normal form. 1/2532 useless extension candidates. Maximal degree in co-relation 17396. Up to 1941 conditions per place. [2024-06-27 22:07:09,425 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 318 selfloop transitions, 189 changer transitions 0/514 dead transitions. [2024-06-27 22:07:09,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 514 transitions, 9052 flow [2024-06-27 22:07:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:07:09,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:07:09,427 INFO L175 Difference]: Start difference. First operand has 245 places, 490 transitions, 7914 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:07:09,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 514 transitions, 9052 flow [2024-06-27 22:07:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 514 transitions, 8718 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:09,627 INFO L231 Difference]: Finished difference. Result has 249 places, 490 transitions, 7972 flow [2024-06-27 22:07:09,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7580, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7972, PETRI_PLACES=249, PETRI_TRANSITIONS=490} [2024-06-27 22:07:09,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-27 22:07:09,628 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 490 transitions, 7972 flow [2024-06-27 22:07:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:09,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:09,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:07:09,632 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1844487065, now seen corresponding path program 1 times [2024-06-27 22:07:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:09,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356871825] [2024-06-27 22:07:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:11,554 INFO 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 22:07:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356871825] [2024-06-27 22:07:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356871825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:11,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126787894] [2024-06-27 22:07:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:11,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 490 transitions, 7972 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 22:07:11,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:11,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:11,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:12,468 INFO L124 PetriNetUnfolderBase]: 1352/2519 cut-off events. [2024-06-27 22:07:12,468 INFO L125 PetriNetUnfolderBase]: For 65902/65955 co-relation queries the response was YES. [2024-06-27 22:07:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16694 conditions, 2519 events. 1352/2519 cut-off events. For 65902/65955 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15454 event pairs, 231 based on Foata normal form. 41/2473 useless extension candidates. Maximal degree in co-relation 16584. Up to 1905 conditions per place. [2024-06-27 22:07:12,493 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 426 selfloop transitions, 20 changer transitions 0/516 dead transitions. [2024-06-27 22:07:12,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 516 transitions, 9014 flow [2024-06-27 22:07:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:07:12,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-06-27 22:07:12,495 INFO L175 Difference]: Start difference. First operand has 249 places, 490 transitions, 7972 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:07:12,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 516 transitions, 9014 flow [2024-06-27 22:07:12,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 516 transitions, 8604 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:12,789 INFO L231 Difference]: Finished difference. Result has 250 places, 490 transitions, 7606 flow [2024-06-27 22:07:12,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7562, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7606, PETRI_PLACES=250, PETRI_TRANSITIONS=490} [2024-06-27 22:07:12,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-27 22:07:12,790 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 490 transitions, 7606 flow [2024-06-27 22:07:12,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 22:07:12,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:12,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:07:12,790 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:12,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1892369637, now seen corresponding path program 1 times [2024-06-27 22:07:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730399786] [2024-06-27 22:07:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:14,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:14,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730399786] [2024-06-27 22:07:14,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730399786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:14,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:14,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:14,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889205882] [2024-06-27 22:07:14,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:14,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:14,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:14,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:14,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:14,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:14,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 490 transitions, 7606 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:14,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:14,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:14,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:15,012 INFO L124 PetriNetUnfolderBase]: 1454/2574 cut-off events. [2024-06-27 22:07:15,012 INFO L125 PetriNetUnfolderBase]: For 65728/65728 co-relation queries the response was YES. [2024-06-27 22:07:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17277 conditions, 2574 events. 1454/2574 cut-off events. For 65728/65728 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15527 event pairs, 213 based on Foata normal form. 1/2513 useless extension candidates. Maximal degree in co-relation 17166. Up to 2203 conditions per place. [2024-06-27 22:07:15,036 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 485 selfloop transitions, 35 changer transitions 0/527 dead transitions. [2024-06-27 22:07:15,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 527 transitions, 8909 flow [2024-06-27 22:07:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:07:15,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 22:07:15,051 INFO L175 Difference]: Start difference. First operand has 250 places, 490 transitions, 7606 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:07:15,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 527 transitions, 8909 flow [2024-06-27 22:07:15,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 527 transitions, 8856 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:15,286 INFO L231 Difference]: Finished difference. Result has 253 places, 496 transitions, 7721 flow [2024-06-27 22:07:15,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7553, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7721, PETRI_PLACES=253, PETRI_TRANSITIONS=496} [2024-06-27 22:07:15,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-27 22:07:15,287 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 496 transitions, 7721 flow [2024-06-27 22:07:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:15,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:15,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:07:15,287 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:15,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1892364987, now seen corresponding path program 2 times [2024-06-27 22:07:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481139978] [2024-06-27 22:07:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481139978] [2024-06-27 22:07:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481139978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885292519] [2024-06-27 22:07:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:16,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:16,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 496 transitions, 7721 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:16,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:16,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:16,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:17,350 INFO L124 PetriNetUnfolderBase]: 1484/2624 cut-off events. [2024-06-27 22:07:17,350 INFO L125 PetriNetUnfolderBase]: For 69413/69413 co-relation queries the response was YES. [2024-06-27 22:07:17,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17822 conditions, 2624 events. 1484/2624 cut-off events. For 69413/69413 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15887 event pairs, 208 based on Foata normal form. 1/2561 useless extension candidates. Maximal degree in co-relation 17709. Up to 2001 conditions per place. [2024-06-27 22:07:17,379 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 97 changer transitions 0/534 dead transitions. [2024-06-27 22:07:17,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 534 transitions, 9141 flow [2024-06-27 22:07:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:07:17,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:07:17,380 INFO L175 Difference]: Start difference. First operand has 253 places, 496 transitions, 7721 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:07:17,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 534 transitions, 9141 flow [2024-06-27 22:07:17,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 534 transitions, 9027 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:17,627 INFO L231 Difference]: Finished difference. Result has 257 places, 502 transitions, 7915 flow [2024-06-27 22:07:17,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7607, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7915, PETRI_PLACES=257, PETRI_TRANSITIONS=502} [2024-06-27 22:07:17,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-27 22:07:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 502 transitions, 7915 flow [2024-06-27 22:07:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:17,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:17,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:17,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:07:17,629 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:17,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1887896151, now seen corresponding path program 1 times [2024-06-27 22:07:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:17,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668153498] [2024-06-27 22:07:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:17,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:18,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668153498] [2024-06-27 22:07:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668153498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:18,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:18,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732403999] [2024-06-27 22:07:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:18,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:18,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:18,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 502 transitions, 7915 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:18,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:18,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:18,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:19,625 INFO L124 PetriNetUnfolderBase]: 1508/2758 cut-off events. [2024-06-27 22:07:19,626 INFO L125 PetriNetUnfolderBase]: For 73556/73556 co-relation queries the response was YES. [2024-06-27 22:07:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18529 conditions, 2758 events. 1508/2758 cut-off events. For 73556/73556 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17052 event pairs, 247 based on Foata normal form. 1/2672 useless extension candidates. Maximal degree in co-relation 18414. Up to 1839 conditions per place. [2024-06-27 22:07:19,654 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 394 selfloop transitions, 143 changer transitions 0/544 dead transitions. [2024-06-27 22:07:19,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 544 transitions, 9386 flow [2024-06-27 22:07:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:07:19,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:07:19,656 INFO L175 Difference]: Start difference. First operand has 257 places, 502 transitions, 7915 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:07:19,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 544 transitions, 9386 flow [2024-06-27 22:07:19,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 544 transitions, 9280 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:19,904 INFO L231 Difference]: Finished difference. Result has 264 places, 514 transitions, 8371 flow [2024-06-27 22:07:19,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8371, PETRI_PLACES=264, PETRI_TRANSITIONS=514} [2024-06-27 22:07:19,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-27 22:07:19,904 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 514 transitions, 8371 flow [2024-06-27 22:07:19,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:19,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:19,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:19,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:07:19,905 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:19,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:19,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1887723171, now seen corresponding path program 2 times [2024-06-27 22:07:19,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:19,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142777048] [2024-06-27 22:07:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:21,092 INFO 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 22:07:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142777048] [2024-06-27 22:07:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142777048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104599541] [2024-06-27 22:07:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:21,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:21,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:21,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 514 transitions, 8371 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:21,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:21,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:21,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:21,815 INFO L124 PetriNetUnfolderBase]: 1538/2822 cut-off events. [2024-06-27 22:07:21,815 INFO L125 PetriNetUnfolderBase]: For 78608/78608 co-relation queries the response was YES. [2024-06-27 22:07:21,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19623 conditions, 2822 events. 1538/2822 cut-off events. For 78608/78608 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17601 event pairs, 246 based on Foata normal form. 1/2732 useless extension candidates. Maximal degree in co-relation 19504. Up to 1869 conditions per place. [2024-06-27 22:07:21,845 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 431 selfloop transitions, 120 changer transitions 0/558 dead transitions. [2024-06-27 22:07:21,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 558 transitions, 10049 flow [2024-06-27 22:07:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:07:21,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:07:21,847 INFO L175 Difference]: Start difference. First operand has 264 places, 514 transitions, 8371 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:07:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 558 transitions, 10049 flow [2024-06-27 22:07:22,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 558 transitions, 9978 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:22,161 INFO L231 Difference]: Finished difference. Result has 272 places, 521 transitions, 8705 flow [2024-06-27 22:07:22,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8705, PETRI_PLACES=272, PETRI_TRANSITIONS=521} [2024-06-27 22:07:22,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-27 22:07:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 521 transitions, 8705 flow [2024-06-27 22:07:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:22,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:22,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:07:22,163 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:22,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1887723357, now seen corresponding path program 3 times [2024-06-27 22:07:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:22,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030784708] [2024-06-27 22:07:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:23,553 INFO 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 22:07:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030784708] [2024-06-27 22:07:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030784708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122388944] [2024-06-27 22:07:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:23,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:23,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:23,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 521 transitions, 8705 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:23,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:23,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:23,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:24,340 INFO L124 PetriNetUnfolderBase]: 1549/2750 cut-off events. [2024-06-27 22:07:24,341 INFO L125 PetriNetUnfolderBase]: For 82494/82494 co-relation queries the response was YES. [2024-06-27 22:07:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20049 conditions, 2750 events. 1549/2750 cut-off events. For 82494/82494 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16906 event pairs, 213 based on Foata normal form. 1/2681 useless extension candidates. Maximal degree in co-relation 19926. Up to 2094 conditions per place. [2024-06-27 22:07:24,370 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 459 selfloop transitions, 91 changer transitions 0/557 dead transitions. [2024-06-27 22:07:24,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 557 transitions, 10179 flow [2024-06-27 22:07:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:07:24,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:07:24,373 INFO L175 Difference]: Start difference. First operand has 272 places, 521 transitions, 8705 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:07:24,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 557 transitions, 10179 flow [2024-06-27 22:07:24,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 557 transitions, 10055 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:24,743 INFO L231 Difference]: Finished difference. Result has 278 places, 524 transitions, 8834 flow [2024-06-27 22:07:24,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8585, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8834, PETRI_PLACES=278, PETRI_TRANSITIONS=524} [2024-06-27 22:07:24,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 22:07:24,743 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 524 transitions, 8834 flow [2024-06-27 22:07:24,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:24,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:24,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:24,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:07:24,744 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:24,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1887716413, now seen corresponding path program 1 times [2024-06-27 22:07:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:24,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516560602] [2024-06-27 22:07:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:24,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:26,243 INFO 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 22:07:26,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516560602] [2024-06-27 22:07:26,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516560602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:26,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:26,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:26,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337160277] [2024-06-27 22:07:26,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:26,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:26,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:26,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 524 transitions, 8834 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:26,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:26,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:27,238 INFO L124 PetriNetUnfolderBase]: 1611/2949 cut-off events. [2024-06-27 22:07:27,238 INFO L125 PetriNetUnfolderBase]: For 89912/89912 co-relation queries the response was YES. [2024-06-27 22:07:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20884 conditions, 2949 events. 1611/2949 cut-off events. For 89912/89912 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18513 event pairs, 256 based on Foata normal form. 2/2857 useless extension candidates. Maximal degree in co-relation 20759. Up to 1886 conditions per place. [2024-06-27 22:07:27,270 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 433 selfloop transitions, 127 changer transitions 0/567 dead transitions. [2024-06-27 22:07:27,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 567 transitions, 10348 flow [2024-06-27 22:07:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:07:27,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:07:27,272 INFO L175 Difference]: Start difference. First operand has 278 places, 524 transitions, 8834 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:07:27,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 567 transitions, 10348 flow [2024-06-27 22:07:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 567 transitions, 10184 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:27,618 INFO L231 Difference]: Finished difference. Result has 283 places, 530 transitions, 9135 flow [2024-06-27 22:07:27,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8670, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9135, PETRI_PLACES=283, PETRI_TRANSITIONS=530} [2024-06-27 22:07:27,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-27 22:07:27,619 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 530 transitions, 9135 flow [2024-06-27 22:07:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:27,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:27,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:27,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:07:27,619 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:27,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1887716661, now seen corresponding path program 3 times [2024-06-27 22:07:27,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340358652] [2024-06-27 22:07:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:28,795 INFO 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 22:07:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340358652] [2024-06-27 22:07:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340358652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:28,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:28,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274205799] [2024-06-27 22:07:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:28,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:28,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:28,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 530 transitions, 9135 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:28,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:28,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:29,723 INFO L124 PetriNetUnfolderBase]: 1609/2952 cut-off events. [2024-06-27 22:07:29,723 INFO L125 PetriNetUnfolderBase]: For 91639/91639 co-relation queries the response was YES. [2024-06-27 22:07:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21422 conditions, 2952 events. 1609/2952 cut-off events. For 91639/91639 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18582 event pairs, 255 based on Foata normal form. 1/2857 useless extension candidates. Maximal degree in co-relation 21295. Up to 1980 conditions per place. [2024-06-27 22:07:29,759 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 429 selfloop transitions, 127 changer transitions 0/563 dead transitions. [2024-06-27 22:07:29,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 563 transitions, 10586 flow [2024-06-27 22:07:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:07:29,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:07:29,760 INFO L175 Difference]: Start difference. First operand has 283 places, 530 transitions, 9135 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:07:29,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 563 transitions, 10586 flow [2024-06-27 22:07:30,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 563 transitions, 10416 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:30,132 INFO L231 Difference]: Finished difference. Result has 287 places, 530 transitions, 9228 flow [2024-06-27 22:07:30,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8965, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9228, PETRI_PLACES=287, PETRI_TRANSITIONS=530} [2024-06-27 22:07:30,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-27 22:07:30,142 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 530 transitions, 9228 flow [2024-06-27 22:07:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:30,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:30,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:07:30,143 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:30,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash 649861203, now seen corresponding path program 4 times [2024-06-27 22:07:30,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602671238] [2024-06-27 22:07:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:31,362 INFO 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 22:07:31,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:31,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602671238] [2024-06-27 22:07:31,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602671238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:31,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630518639] [2024-06-27 22:07:31,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:31,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:31,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:31,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 530 transitions, 9228 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:31,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:31,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:31,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:32,288 INFO L124 PetriNetUnfolderBase]: 1636/3009 cut-off events. [2024-06-27 22:07:32,289 INFO L125 PetriNetUnfolderBase]: For 97166/97166 co-relation queries the response was YES. [2024-06-27 22:07:32,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 3009 events. 1636/3009 cut-off events. For 97166/97166 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19080 event pairs, 262 based on Foata normal form. 1/2911 useless extension candidates. Maximal degree in co-relation 21642. Up to 2008 conditions per place. [2024-06-27 22:07:32,324 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 431 selfloop transitions, 137 changer transitions 0/575 dead transitions. [2024-06-27 22:07:32,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 575 transitions, 10979 flow [2024-06-27 22:07:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:07:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:07:32,325 INFO L175 Difference]: Start difference. First operand has 287 places, 530 transitions, 9228 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:07:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 575 transitions, 10979 flow [2024-06-27 22:07:32,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 575 transitions, 10673 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:07:32,703 INFO L231 Difference]: Finished difference. Result has 288 places, 539 transitions, 9392 flow [2024-06-27 22:07:32,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8938, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9392, PETRI_PLACES=288, PETRI_TRANSITIONS=539} [2024-06-27 22:07:32,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-27 22:07:32,705 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 539 transitions, 9392 flow [2024-06-27 22:07:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:32,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:32,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:32,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:07:32,706 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:32,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233281, now seen corresponding path program 5 times [2024-06-27 22:07:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:32,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124003025] [2024-06-27 22:07:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:33,929 INFO 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 22:07:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124003025] [2024-06-27 22:07:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124003025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859095308] [2024-06-27 22:07:33,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:33,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:34,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:34,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 539 transitions, 9392 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:34,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:34,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:34,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:34,803 INFO L124 PetriNetUnfolderBase]: 1647/3030 cut-off events. [2024-06-27 22:07:34,803 INFO L125 PetriNetUnfolderBase]: For 99488/99488 co-relation queries the response was YES. [2024-06-27 22:07:34,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22029 conditions, 3030 events. 1647/3030 cut-off events. For 99488/99488 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19253 event pairs, 258 based on Foata normal form. 1/2931 useless extension candidates. Maximal degree in co-relation 21900. Up to 2020 conditions per place. [2024-06-27 22:07:34,836 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 447 selfloop transitions, 127 changer transitions 0/581 dead transitions. [2024-06-27 22:07:34,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 581 transitions, 11141 flow [2024-06-27 22:07:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:07:34,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:07:34,838 INFO L175 Difference]: Start difference. First operand has 288 places, 539 transitions, 9392 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:07:34,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 581 transitions, 11141 flow [2024-06-27 22:07:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 581 transitions, 11035 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:35,281 INFO L231 Difference]: Finished difference. Result has 294 places, 541 transitions, 9578 flow [2024-06-27 22:07:35,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9290, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9578, PETRI_PLACES=294, PETRI_TRANSITIONS=541} [2024-06-27 22:07:35,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 22:07:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 541 transitions, 9578 flow [2024-06-27 22:07:35,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:35,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:35,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:07:35,282 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:35,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233467, now seen corresponding path program 4 times [2024-06-27 22:07:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772277623] [2024-06-27 22:07:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:36,667 INFO 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 22:07:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772277623] [2024-06-27 22:07:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772277623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:36,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538328626] [2024-06-27 22:07:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:36,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:36,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:36,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 541 transitions, 9578 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:36,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:36,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:36,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:37,502 INFO L124 PetriNetUnfolderBase]: 1658/2958 cut-off events. [2024-06-27 22:07:37,502 INFO L125 PetriNetUnfolderBase]: For 103984/103984 co-relation queries the response was YES. [2024-06-27 22:07:37,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22207 conditions, 2958 events. 1658/2958 cut-off events. For 103984/103984 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18539 event pairs, 225 based on Foata normal form. 1/2880 useless extension candidates. Maximal degree in co-relation 22077. Up to 2255 conditions per place. [2024-06-27 22:07:37,537 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 479 selfloop transitions, 91 changer transitions 0/577 dead transitions. [2024-06-27 22:07:37,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 577 transitions, 11138 flow [2024-06-27 22:07:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:07:37,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:07:37,539 INFO L175 Difference]: Start difference. First operand has 294 places, 541 transitions, 9578 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:07:37,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 577 transitions, 11138 flow [2024-06-27 22:07:37,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 577 transitions, 10999 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:37,974 INFO L231 Difference]: Finished difference. Result has 299 places, 543 transitions, 9663 flow [2024-06-27 22:07:37,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9441, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9663, PETRI_PLACES=299, PETRI_TRANSITIONS=543} [2024-06-27 22:07:37,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-27 22:07:37,975 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 543 transitions, 9663 flow [2024-06-27 22:07:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:37,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:37,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:07:37,975 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:37,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1715226523, now seen corresponding path program 2 times [2024-06-27 22:07:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:37,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383190477] [2024-06-27 22:07:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:39,379 INFO 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 22:07:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383190477] [2024-06-27 22:07:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383190477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:39,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548695693] [2024-06-27 22:07:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:39,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:39,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 543 transitions, 9663 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:39,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:39,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:39,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:40,338 INFO L124 PetriNetUnfolderBase]: 1654/3045 cut-off events. [2024-06-27 22:07:40,339 INFO L125 PetriNetUnfolderBase]: For 105734/105734 co-relation queries the response was YES. [2024-06-27 22:07:40,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22216 conditions, 3045 events. 1654/3045 cut-off events. For 105734/105734 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19363 event pairs, 257 based on Foata normal form. 2/2946 useless extension candidates. Maximal degree in co-relation 22085. Up to 1956 conditions per place. [2024-06-27 22:07:40,372 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 480 selfloop transitions, 106 changer transitions 0/593 dead transitions. [2024-06-27 22:07:40,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 593 transitions, 11361 flow [2024-06-27 22:07:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:07:40,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:07:40,374 INFO L175 Difference]: Start difference. First operand has 299 places, 543 transitions, 9663 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:07:40,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 593 transitions, 11361 flow [2024-06-27 22:07:40,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 593 transitions, 11085 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:40,789 INFO L231 Difference]: Finished difference. Result has 301 places, 543 transitions, 9608 flow [2024-06-27 22:07:40,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9387, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9608, PETRI_PLACES=301, PETRI_TRANSITIONS=543} [2024-06-27 22:07:40,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-27 22:07:40,790 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 543 transitions, 9608 flow [2024-06-27 22:07:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:40,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:40,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:40,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:07:40,791 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:40,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1715226771, now seen corresponding path program 6 times [2024-06-27 22:07:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193788332] [2024-06-27 22:07:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:41,894 INFO 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 22:07:41,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:41,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193788332] [2024-06-27 22:07:41,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193788332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:41,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:41,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:41,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488041488] [2024-06-27 22:07:41,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:41,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:41,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 543 transitions, 9608 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:41,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:41,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:41,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:42,844 INFO L124 PetriNetUnfolderBase]: 1652/3042 cut-off events. [2024-06-27 22:07:42,845 INFO L125 PetriNetUnfolderBase]: For 104886/104886 co-relation queries the response was YES. [2024-06-27 22:07:42,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22102 conditions, 3042 events. 1652/3042 cut-off events. For 104886/104886 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19338 event pairs, 259 based on Foata normal form. 1/2942 useless extension candidates. Maximal degree in co-relation 21971. Up to 2029 conditions per place. [2024-06-27 22:07:42,880 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 456 selfloop transitions, 122 changer transitions 0/585 dead transitions. [2024-06-27 22:07:42,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 585 transitions, 11281 flow [2024-06-27 22:07:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:07:42,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:07:42,882 INFO L175 Difference]: Start difference. First operand has 301 places, 543 transitions, 9608 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:07:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 585 transitions, 11281 flow [2024-06-27 22:07:43,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 585 transitions, 11052 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:43,312 INFO L231 Difference]: Finished difference. Result has 303 places, 543 transitions, 9632 flow [2024-06-27 22:07:43,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9379, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9632, PETRI_PLACES=303, PETRI_TRANSITIONS=543} [2024-06-27 22:07:43,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-27 22:07:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 543 transitions, 9632 flow [2024-06-27 22:07:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:43,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:07:43,313 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1668986339, now seen corresponding path program 7 times [2024-06-27 22:07:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930130442] [2024-06-27 22:07:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:44,398 INFO 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 22:07:44,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:44,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930130442] [2024-06-27 22:07:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930130442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:44,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:44,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:44,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608372844] [2024-06-27 22:07:44,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:44,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:44,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:44,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 543 transitions, 9632 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:44,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:44,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:44,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:45,394 INFO L124 PetriNetUnfolderBase]: 1663/3060 cut-off events. [2024-06-27 22:07:45,394 INFO L125 PetriNetUnfolderBase]: For 107351/107351 co-relation queries the response was YES. [2024-06-27 22:07:45,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22251 conditions, 3060 events. 1663/3060 cut-off events. For 107351/107351 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19494 event pairs, 273 based on Foata normal form. 1/2959 useless extension candidates. Maximal degree in co-relation 22119. Up to 2424 conditions per place. [2024-06-27 22:07:45,431 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 506 selfloop transitions, 63 changer transitions 0/576 dead transitions. [2024-06-27 22:07:45,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 576 transitions, 11156 flow [2024-06-27 22:07:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:07:45,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 22:07:45,433 INFO L175 Difference]: Start difference. First operand has 303 places, 543 transitions, 9632 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:07:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 576 transitions, 11156 flow [2024-06-27 22:07:45,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 576 transitions, 10884 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:45,909 INFO L231 Difference]: Finished difference. Result has 305 places, 546 transitions, 9570 flow [2024-06-27 22:07:45,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9364, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9570, PETRI_PLACES=305, PETRI_TRANSITIONS=546} [2024-06-27 22:07:45,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-27 22:07:45,910 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 546 transitions, 9570 flow [2024-06-27 22:07:45,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:45,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:45,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:45,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:07:45,911 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:45,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:45,913 INFO L85 PathProgramCache]: Analyzing trace with hash -345733497, now seen corresponding path program 3 times [2024-06-27 22:07:45,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:45,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415831014] [2024-06-27 22:07:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:47,253 INFO 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 22:07:47,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415831014] [2024-06-27 22:07:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415831014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796373354] [2024-06-27 22:07:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:47,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:47,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:47,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 546 transitions, 9570 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:47,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:47,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:48,220 INFO L124 PetriNetUnfolderBase]: 1673/3065 cut-off events. [2024-06-27 22:07:48,220 INFO L125 PetriNetUnfolderBase]: For 109214/109214 co-relation queries the response was YES. [2024-06-27 22:07:48,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22135 conditions, 3065 events. 1673/3065 cut-off events. For 109214/109214 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19443 event pairs, 281 based on Foata normal form. 3/2968 useless extension candidates. Maximal degree in co-relation 22001. Up to 2523 conditions per place. [2024-06-27 22:07:48,259 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 548 selfloop transitions, 30 changer transitions 0/585 dead transitions. [2024-06-27 22:07:48,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 585 transitions, 11035 flow [2024-06-27 22:07:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:07:48,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-27 22:07:48,260 INFO L175 Difference]: Start difference. First operand has 305 places, 546 transitions, 9570 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:07:48,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 585 transitions, 11035 flow [2024-06-27 22:07:48,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 585 transitions, 10694 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:48,779 INFO L231 Difference]: Finished difference. Result has 309 places, 553 transitions, 9416 flow [2024-06-27 22:07:48,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9229, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9416, PETRI_PLACES=309, PETRI_TRANSITIONS=553} [2024-06-27 22:07:48,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-27 22:07:48,779 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 553 transitions, 9416 flow [2024-06-27 22:07:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:48,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:48,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:48,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:07:48,780 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:48,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1706543975, now seen corresponding path program 5 times [2024-06-27 22:07:48,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:48,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978715203] [2024-06-27 22:07:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:48,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:49,961 INFO 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 22:07:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978715203] [2024-06-27 22:07:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978715203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:49,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:49,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:49,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705010424] [2024-06-27 22:07:49,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:49,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:49,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:50,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:50,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 553 transitions, 9416 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:50,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:50,888 INFO L124 PetriNetUnfolderBase]: 1671/3073 cut-off events. [2024-06-27 22:07:50,888 INFO L125 PetriNetUnfolderBase]: For 104961/104961 co-relation queries the response was YES. [2024-06-27 22:07:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22117 conditions, 3073 events. 1671/3073 cut-off events. For 104961/104961 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19565 event pairs, 278 based on Foata normal form. 1/2972 useless extension candidates. Maximal degree in co-relation 21980. Up to 2553 conditions per place. [2024-06-27 22:07:50,928 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 536 selfloop transitions, 36 changer transitions 0/579 dead transitions. [2024-06-27 22:07:50,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 579 transitions, 10732 flow [2024-06-27 22:07:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:07:50,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-06-27 22:07:50,933 INFO L175 Difference]: Start difference. First operand has 309 places, 553 transitions, 9416 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:07:50,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 579 transitions, 10732 flow [2024-06-27 22:07:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 579 transitions, 10613 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:51,499 INFO L231 Difference]: Finished difference. Result has 315 places, 554 transitions, 9403 flow [2024-06-27 22:07:51,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9297, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9403, PETRI_PLACES=315, PETRI_TRANSITIONS=554} [2024-06-27 22:07:51,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-27 22:07:51,500 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 554 transitions, 9403 flow [2024-06-27 22:07:51,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:51,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:51,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:51,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:07:51,501 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:51,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1706537279, now seen corresponding path program 8 times [2024-06-27 22:07:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469748807] [2024-06-27 22:07:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469748807] [2024-06-27 22:07:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469748807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247832185] [2024-06-27 22:07:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:52,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:52,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 554 transitions, 9403 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:52,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:52,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:52,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:53,636 INFO L124 PetriNetUnfolderBase]: 1685/3103 cut-off events. [2024-06-27 22:07:53,636 INFO L125 PetriNetUnfolderBase]: For 107048/107048 co-relation queries the response was YES. [2024-06-27 22:07:53,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22195 conditions, 3103 events. 1685/3103 cut-off events. For 107048/107048 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 19820 event pairs, 277 based on Foata normal form. 1/3000 useless extension candidates. Maximal degree in co-relation 22056. Up to 2451 conditions per place. [2024-06-27 22:07:53,673 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 523 selfloop transitions, 61 changer transitions 0/591 dead transitions. [2024-06-27 22:07:53,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 591 transitions, 11018 flow [2024-06-27 22:07:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:07:53,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-27 22:07:53,675 INFO L175 Difference]: Start difference. First operand has 315 places, 554 transitions, 9403 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:07:53,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 591 transitions, 11018 flow [2024-06-27 22:07:54,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 591 transitions, 10805 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 22:07:54,267 INFO L231 Difference]: Finished difference. Result has 315 places, 558 transitions, 9391 flow [2024-06-27 22:07:54,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9193, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9391, PETRI_PLACES=315, PETRI_TRANSITIONS=558} [2024-06-27 22:07:54,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-27 22:07:54,267 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 558 transitions, 9391 flow [2024-06-27 22:07:54,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:54,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:54,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:54,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:07:54,268 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:54,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1706306639, now seen corresponding path program 9 times [2024-06-27 22:07:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23942227] [2024-06-27 22:07:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:54,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:55,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:55,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23942227] [2024-06-27 22:07:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23942227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892237340] [2024-06-27 22:07:55,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:55,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:55,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:55,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:55,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 558 transitions, 9391 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:55,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:55,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:55,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:56,605 INFO L124 PetriNetUnfolderBase]: 1699/3133 cut-off events. [2024-06-27 22:07:56,605 INFO L125 PetriNetUnfolderBase]: For 108668/108668 co-relation queries the response was YES. [2024-06-27 22:07:56,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22391 conditions, 3133 events. 1699/3133 cut-off events. For 108668/108668 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20085 event pairs, 280 based on Foata normal form. 1/3028 useless extension candidates. Maximal degree in co-relation 22251. Up to 2465 conditions per place. [2024-06-27 22:07:56,643 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 529 selfloop transitions, 62 changer transitions 0/598 dead transitions. [2024-06-27 22:07:56,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 598 transitions, 11066 flow [2024-06-27 22:07:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:07:56,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-06-27 22:07:56,644 INFO L175 Difference]: Start difference. First operand has 315 places, 558 transitions, 9391 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:07:56,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 598 transitions, 11066 flow [2024-06-27 22:07:57,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 598 transitions, 10992 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:57,310 INFO L231 Difference]: Finished difference. Result has 320 places, 563 transitions, 9531 flow [2024-06-27 22:07:57,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9322, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9531, PETRI_PLACES=320, PETRI_TRANSITIONS=563} [2024-06-27 22:07:57,311 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 278 predicate places. [2024-06-27 22:07:57,311 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 563 transitions, 9531 flow [2024-06-27 22:07:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:57,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:57,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:07:57,312 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -721272157, now seen corresponding path program 4 times [2024-06-27 22:07:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794832286] [2024-06-27 22:07:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:58,773 INFO 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 22:07:58,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794832286] [2024-06-27 22:07:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794832286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:58,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:58,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194478368] [2024-06-27 22:07:58,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:58,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:58,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:58,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:58,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:58,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:07:58,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 563 transitions, 9531 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:58,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:58,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:07:58,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:59,915 INFO L124 PetriNetUnfolderBase]: 1773/3267 cut-off events. [2024-06-27 22:07:59,916 INFO L125 PetriNetUnfolderBase]: For 123423/123423 co-relation queries the response was YES. [2024-06-27 22:07:59,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23503 conditions, 3267 events. 1773/3267 cut-off events. For 123423/123423 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21119 event pairs, 283 based on Foata normal form. 2/3158 useless extension candidates. Maximal degree in co-relation 23361. Up to 2403 conditions per place. [2024-06-27 22:07:59,960 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 552 selfloop transitions, 64 changer transitions 0/623 dead transitions. [2024-06-27 22:07:59,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 623 transitions, 11687 flow [2024-06-27 22:07:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:07:59,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:07:59,964 INFO L175 Difference]: Start difference. First operand has 320 places, 563 transitions, 9531 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:07:59,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 623 transitions, 11687 flow [2024-06-27 22:08:00,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 623 transitions, 11626 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:00,525 INFO L231 Difference]: Finished difference. Result has 325 places, 569 transitions, 9690 flow [2024-06-27 22:08:00,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9470, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9690, PETRI_PLACES=325, PETRI_TRANSITIONS=569} [2024-06-27 22:08:00,526 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-27 22:08:00,526 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 569 transitions, 9690 flow [2024-06-27 22:08:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:08:00,527 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:00,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:00,527 INFO L85 PathProgramCache]: Analyzing trace with hash -669552057, now seen corresponding path program 5 times [2024-06-27 22:08:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847188751] [2024-06-27 22:08:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:02,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847188751] [2024-06-27 22:08:02,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847188751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:02,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:02,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:02,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314938214] [2024-06-27 22:08:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:02,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:02,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:02,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:02,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:02,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 569 transitions, 9690 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:02,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:02,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:03,184 INFO L124 PetriNetUnfolderBase]: 1794/3307 cut-off events. [2024-06-27 22:08:03,184 INFO L125 PetriNetUnfolderBase]: For 124205/124205 co-relation queries the response was YES. [2024-06-27 22:08:03,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23802 conditions, 3307 events. 1794/3307 cut-off events. For 124205/124205 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21445 event pairs, 294 based on Foata normal form. 2/3197 useless extension candidates. Maximal degree in co-relation 23659. Up to 2599 conditions per place. [2024-06-27 22:08:03,226 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 534 selfloop transitions, 85 changer transitions 0/626 dead transitions. [2024-06-27 22:08:03,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 626 transitions, 11636 flow [2024-06-27 22:08:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:08:03,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 22:08:03,228 INFO L175 Difference]: Start difference. First operand has 325 places, 569 transitions, 9690 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:08:03,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 626 transitions, 11636 flow [2024-06-27 22:08:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 626 transitions, 11426 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:03,771 INFO L231 Difference]: Finished difference. Result has 332 places, 588 transitions, 10137 flow [2024-06-27 22:08:03,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9526, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10137, PETRI_PLACES=332, PETRI_TRANSITIONS=588} [2024-06-27 22:08:03,772 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-27 22:08:03,772 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 588 transitions, 10137 flow [2024-06-27 22:08:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:03,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:03,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:03,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:08:03,773 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:03,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash -356754927, now seen corresponding path program 6 times [2024-06-27 22:08:03,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:03,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092933761] [2024-06-27 22:08:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:03,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092933761] [2024-06-27 22:08:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092933761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:05,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333523064] [2024-06-27 22:08:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:05,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:05,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:05,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 588 transitions, 10137 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:05,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:05,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:05,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:06,334 INFO L124 PetriNetUnfolderBase]: 1816/3338 cut-off events. [2024-06-27 22:08:06,335 INFO L125 PetriNetUnfolderBase]: For 128453/128453 co-relation queries the response was YES. [2024-06-27 22:08:06,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24393 conditions, 3338 events. 1816/3338 cut-off events. For 128453/128453 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21662 event pairs, 297 based on Foata normal form. 2/3228 useless extension candidates. Maximal degree in co-relation 24248. Up to 2656 conditions per place. [2024-06-27 22:08:06,378 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 576 selfloop transitions, 45 changer transitions 0/628 dead transitions. [2024-06-27 22:08:06,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 628 transitions, 11847 flow [2024-06-27 22:08:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:08:06,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-27 22:08:06,380 INFO L175 Difference]: Start difference. First operand has 332 places, 588 transitions, 10137 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:08:06,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 628 transitions, 11847 flow [2024-06-27 22:08:06,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 628 transitions, 11638 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:06,998 INFO L231 Difference]: Finished difference. Result has 335 places, 590 transitions, 10052 flow [2024-06-27 22:08:06,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9928, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10052, PETRI_PLACES=335, PETRI_TRANSITIONS=590} [2024-06-27 22:08:06,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-27 22:08:06,998 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 590 transitions, 10052 flow [2024-06-27 22:08:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:06,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:06,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:06,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:08:06,999 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:06,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash -669791067, now seen corresponding path program 7 times [2024-06-27 22:08:07,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:07,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563838458] [2024-06-27 22:08:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:07,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563838458] [2024-06-27 22:08:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563838458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:08,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436875724] [2024-06-27 22:08:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:08,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:08,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 590 transitions, 10052 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:08,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:08,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:08,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:09,565 INFO L124 PetriNetUnfolderBase]: 1811/3329 cut-off events. [2024-06-27 22:08:09,566 INFO L125 PetriNetUnfolderBase]: For 122943/122943 co-relation queries the response was YES. [2024-06-27 22:08:09,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24361 conditions, 3329 events. 1811/3329 cut-off events. For 122943/122943 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21576 event pairs, 281 based on Foata normal form. 2/3220 useless extension candidates. Maximal degree in co-relation 24216. Up to 2435 conditions per place. [2024-06-27 22:08:09,608 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 534 selfloop transitions, 86 changer transitions 0/627 dead transitions. [2024-06-27 22:08:09,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 627 transitions, 11750 flow [2024-06-27 22:08:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:08:09,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:08:09,611 INFO L175 Difference]: Start difference. First operand has 335 places, 590 transitions, 10052 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:08:09,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 627 transitions, 11750 flow [2024-06-27 22:08:10,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 627 transitions, 11609 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:10,280 INFO L231 Difference]: Finished difference. Result has 335 places, 586 transitions, 10053 flow [2024-06-27 22:08:10,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9881, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10053, PETRI_PLACES=335, PETRI_TRANSITIONS=586} [2024-06-27 22:08:10,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-27 22:08:10,281 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 586 transitions, 10053 flow [2024-06-27 22:08:10,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:10,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:10,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:10,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:08:10,282 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:10,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -408466905, now seen corresponding path program 10 times [2024-06-27 22:08:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:10,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171548528] [2024-06-27 22:08:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:10,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171548528] [2024-06-27 22:08:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171548528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:11,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263071503] [2024-06-27 22:08:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:11,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:11,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:11,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 586 transitions, 10053 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:11,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:11,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:11,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:12,467 INFO L124 PetriNetUnfolderBase]: 1833/3373 cut-off events. [2024-06-27 22:08:12,467 INFO L125 PetriNetUnfolderBase]: For 126111/126111 co-relation queries the response was YES. [2024-06-27 22:08:12,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24542 conditions, 3373 events. 1833/3373 cut-off events. For 126111/126111 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21964 event pairs, 299 based on Foata normal form. 3/3262 useless extension candidates. Maximal degree in co-relation 24397. Up to 2684 conditions per place. [2024-06-27 22:08:12,512 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 586 selfloop transitions, 33 changer transitions 0/626 dead transitions. [2024-06-27 22:08:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 626 transitions, 11757 flow [2024-06-27 22:08:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:08:12,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-27 22:08:12,514 INFO L175 Difference]: Start difference. First operand has 335 places, 586 transitions, 10053 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:08:12,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 626 transitions, 11757 flow [2024-06-27 22:08:13,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 626 transitions, 11455 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:13,234 INFO L231 Difference]: Finished difference. Result has 335 places, 588 transitions, 9860 flow [2024-06-27 22:08:13,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9751, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9860, PETRI_PLACES=335, PETRI_TRANSITIONS=588} [2024-06-27 22:08:13,235 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-27 22:08:13,235 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 588 transitions, 9860 flow [2024-06-27 22:08:13,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:13,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:13,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:08:13,235 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:13,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -356746557, now seen corresponding path program 8 times [2024-06-27 22:08:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:13,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987658165] [2024-06-27 22:08:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987658165] [2024-06-27 22:08:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987658165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:14,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419078062] [2024-06-27 22:08:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:14,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:14,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:14,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 588 transitions, 9860 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:14,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:14,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:14,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:15,680 INFO L124 PetriNetUnfolderBase]: 1827/3367 cut-off events. [2024-06-27 22:08:15,680 INFO L125 PetriNetUnfolderBase]: For 120358/120358 co-relation queries the response was YES. [2024-06-27 22:08:15,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24158 conditions, 3367 events. 1827/3367 cut-off events. For 120358/120358 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21942 event pairs, 300 based on Foata normal form. 2/3254 useless extension candidates. Maximal degree in co-relation 24012. Up to 2676 conditions per place. [2024-06-27 22:08:15,720 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 579 selfloop transitions, 41 changer transitions 0/627 dead transitions. [2024-06-27 22:08:15,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 627 transitions, 11418 flow [2024-06-27 22:08:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:08:15,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:08:15,722 INFO L175 Difference]: Start difference. First operand has 335 places, 588 transitions, 9860 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:08:15,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 627 transitions, 11418 flow [2024-06-27 22:08:16,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 627 transitions, 11287 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:16,298 INFO L231 Difference]: Finished difference. Result has 337 places, 588 transitions, 9819 flow [2024-06-27 22:08:16,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9729, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9819, PETRI_PLACES=337, PETRI_TRANSITIONS=588} [2024-06-27 22:08:16,299 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-27 22:08:16,299 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 588 transitions, 9819 flow [2024-06-27 22:08:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:16,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:16,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:16,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:08:16,300 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:16,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1469156629, now seen corresponding path program 6 times [2024-06-27 22:08:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:16,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238594779] [2024-06-27 22:08:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:16,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:17,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:17,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238594779] [2024-06-27 22:08:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238594779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:17,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449785963] [2024-06-27 22:08:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:17,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:17,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 588 transitions, 9819 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:17,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:17,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:17,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:18,551 INFO L124 PetriNetUnfolderBase]: 1870/3442 cut-off events. [2024-06-27 22:08:18,551 INFO L125 PetriNetUnfolderBase]: For 123591/123591 co-relation queries the response was YES. [2024-06-27 22:08:18,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24704 conditions, 3442 events. 1870/3442 cut-off events. For 123591/123591 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22469 event pairs, 222 based on Foata normal form. 1/3330 useless extension candidates. Maximal degree in co-relation 24558. Up to 2764 conditions per place. [2024-06-27 22:08:18,595 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 557 selfloop transitions, 93 changer transitions 0/657 dead transitions. [2024-06-27 22:08:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 657 transitions, 11893 flow [2024-06-27 22:08:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:08:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:08:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:08:18,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-06-27 22:08:18,596 INFO L175 Difference]: Start difference. First operand has 337 places, 588 transitions, 9819 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:08:18,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 657 transitions, 11893 flow [2024-06-27 22:08:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 657 transitions, 11836 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:19,273 INFO L231 Difference]: Finished difference. Result has 343 places, 616 transitions, 10405 flow [2024-06-27 22:08:19,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9762, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10405, PETRI_PLACES=343, PETRI_TRANSITIONS=616} [2024-06-27 22:08:19,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-27 22:08:19,274 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 616 transitions, 10405 flow [2024-06-27 22:08:19,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:19,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:19,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:19,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:08:19,274 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:19,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 88765821, now seen corresponding path program 7 times [2024-06-27 22:08:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509096336] [2024-06-27 22:08:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509096336] [2024-06-27 22:08:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509096336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:20,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200576589] [2024-06-27 22:08:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:20,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:20,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:20,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 616 transitions, 10405 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:21,821 INFO L124 PetriNetUnfolderBase]: 1933/3532 cut-off events. [2024-06-27 22:08:21,822 INFO L125 PetriNetUnfolderBase]: For 133077/133077 co-relation queries the response was YES. [2024-06-27 22:08:21,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26104 conditions, 3532 events. 1933/3532 cut-off events. For 133077/133077 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23042 event pairs, 207 based on Foata normal form. 1/3420 useless extension candidates. Maximal degree in co-relation 25957. Up to 2497 conditions per place. [2024-06-27 22:08:21,869 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 425 selfloop transitions, 258 changer transitions 0/690 dead transitions. [2024-06-27 22:08:21,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 690 transitions, 12825 flow [2024-06-27 22:08:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:08:21,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:08:21,871 INFO L175 Difference]: Start difference. First operand has 343 places, 616 transitions, 10405 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:08:21,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 690 transitions, 12825 flow [2024-06-27 22:08:22,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 690 transitions, 12426 flow, removed 188 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:22,685 INFO L231 Difference]: Finished difference. Result has 352 places, 659 transitions, 11350 flow [2024-06-27 22:08:22,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10140, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11350, PETRI_PLACES=352, PETRI_TRANSITIONS=659} [2024-06-27 22:08:22,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-27 22:08:22,686 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 659 transitions, 11350 flow [2024-06-27 22:08:22,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:22,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:22,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:22,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:08:22,687 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:22,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -248088549, now seen corresponding path program 8 times [2024-06-27 22:08:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:22,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042724832] [2024-06-27 22:08:22,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:22,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042724832] [2024-06-27 22:08:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042724832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:23,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828640207] [2024-06-27 22:08:23,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:24,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:24,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 659 transitions, 11350 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:24,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:24,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:24,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:25,191 INFO L124 PetriNetUnfolderBase]: 1939/3554 cut-off events. [2024-06-27 22:08:25,192 INFO L125 PetriNetUnfolderBase]: For 136996/136996 co-relation queries the response was YES. [2024-06-27 22:08:25,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26877 conditions, 3554 events. 1939/3554 cut-off events. For 136996/136996 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23297 event pairs, 225 based on Foata normal form. 1/3442 useless extension candidates. Maximal degree in co-relation 26727. Up to 2875 conditions per place. [2024-06-27 22:08:25,240 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 598 selfloop transitions, 94 changer transitions 0/699 dead transitions. [2024-06-27 22:08:25,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 699 transitions, 13041 flow [2024-06-27 22:08:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:08:25,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:08:25,242 INFO L175 Difference]: Start difference. First operand has 352 places, 659 transitions, 11350 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:08:25,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 699 transitions, 13041 flow [2024-06-27 22:08:26,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 699 transitions, 12774 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:26,056 INFO L231 Difference]: Finished difference. Result has 359 places, 668 transitions, 11440 flow [2024-06-27 22:08:26,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11083, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11440, PETRI_PLACES=359, PETRI_TRANSITIONS=668} [2024-06-27 22:08:26,056 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-27 22:08:26,057 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 668 transitions, 11440 flow [2024-06-27 22:08:26,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:26,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:26,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:26,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:08:26,057 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:26,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 88766007, now seen corresponding path program 11 times [2024-06-27 22:08:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425537332] [2024-06-27 22:08:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:26,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:27,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425537332] [2024-06-27 22:08:27,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425537332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:27,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:27,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913997742] [2024-06-27 22:08:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:27,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:27,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 668 transitions, 11440 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:27,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:27,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:28,740 INFO L124 PetriNetUnfolderBase]: 1995/3641 cut-off events. [2024-06-27 22:08:28,741 INFO L125 PetriNetUnfolderBase]: For 139465/139465 co-relation queries the response was YES. [2024-06-27 22:08:28,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27573 conditions, 3641 events. 1995/3641 cut-off events. For 139465/139465 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23902 event pairs, 220 based on Foata normal form. 1/3529 useless extension candidates. Maximal degree in co-relation 27420. Up to 2417 conditions per place. [2024-06-27 22:08:28,782 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 396 selfloop transitions, 347 changer transitions 0/750 dead transitions. [2024-06-27 22:08:28,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 750 transitions, 13958 flow [2024-06-27 22:08:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:08:28,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:08:28,783 INFO L175 Difference]: Start difference. First operand has 359 places, 668 transitions, 11440 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:08:28,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 750 transitions, 13958 flow [2024-06-27 22:08:29,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 750 transitions, 13800 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:29,562 INFO L231 Difference]: Finished difference. Result has 365 places, 720 transitions, 12902 flow [2024-06-27 22:08:29,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11282, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12902, PETRI_PLACES=365, PETRI_TRANSITIONS=720} [2024-06-27 22:08:29,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-27 22:08:29,563 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 720 transitions, 12902 flow [2024-06-27 22:08:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:29,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:29,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:08:29,565 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:29,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1325692497, now seen corresponding path program 9 times [2024-06-27 22:08:29,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:29,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658100884] [2024-06-27 22:08:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658100884] [2024-06-27 22:08:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658100884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:31,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:31,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830994520] [2024-06-27 22:08:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:31,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:31,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 720 transitions, 12902 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:31,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:31,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:32,424 INFO L124 PetriNetUnfolderBase]: 2040/3719 cut-off events. [2024-06-27 22:08:32,424 INFO L125 PetriNetUnfolderBase]: For 149069/149069 co-relation queries the response was YES. [2024-06-27 22:08:32,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29182 conditions, 3719 events. 2040/3719 cut-off events. For 149069/149069 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24478 event pairs, 228 based on Foata normal form. 1/3607 useless extension candidates. Maximal degree in co-relation 29027. Up to 3017 conditions per place. [2024-06-27 22:08:32,475 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 663 selfloop transitions, 106 changer transitions 0/776 dead transitions. [2024-06-27 22:08:32,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 776 transitions, 14957 flow [2024-06-27 22:08:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:08:32,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:08:32,476 INFO L175 Difference]: Start difference. First operand has 365 places, 720 transitions, 12902 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:08:32,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 776 transitions, 14957 flow [2024-06-27 22:08:33,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 776 transitions, 14356 flow, removed 149 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:33,412 INFO L231 Difference]: Finished difference. Result has 370 places, 748 transitions, 12963 flow [2024-06-27 22:08:33,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12312, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12963, PETRI_PLACES=370, PETRI_TRANSITIONS=748} [2024-06-27 22:08:33,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-27 22:08:33,413 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 748 transitions, 12963 flow [2024-06-27 22:08:33,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:33,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:33,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:33,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:08:33,414 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:33,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:33,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1845761517, now seen corresponding path program 10 times [2024-06-27 22:08:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:33,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526635887] [2024-06-27 22:08:33,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526635887] [2024-06-27 22:08:34,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526635887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:34,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:34,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318993176] [2024-06-27 22:08:34,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:34,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:34,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:34,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 748 transitions, 12963 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:34,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:34,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:34,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:36,159 INFO L124 PetriNetUnfolderBase]: 2086/3788 cut-off events. [2024-06-27 22:08:36,159 INFO L125 PetriNetUnfolderBase]: For 150145/150145 co-relation queries the response was YES. [2024-06-27 22:08:36,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29272 conditions, 3788 events. 2086/3788 cut-off events. For 150145/150145 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24946 event pairs, 220 based on Foata normal form. 1/3676 useless extension candidates. Maximal degree in co-relation 29115. Up to 2686 conditions per place. [2024-06-27 22:08:36,214 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 494 selfloop transitions, 301 changer transitions 0/802 dead transitions. [2024-06-27 22:08:36,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 802 transitions, 15274 flow [2024-06-27 22:08:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:08:36,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:08:36,216 INFO L175 Difference]: Start difference. First operand has 370 places, 748 transitions, 12963 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:08:36,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 802 transitions, 15274 flow [2024-06-27 22:08:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 802 transitions, 15073 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:37,301 INFO L231 Difference]: Finished difference. Result has 377 places, 773 transitions, 13761 flow [2024-06-27 22:08:37,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12762, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13761, PETRI_PLACES=377, PETRI_TRANSITIONS=773} [2024-06-27 22:08:37,302 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 22:08:37,302 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 773 transitions, 13761 flow [2024-06-27 22:08:37,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:37,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:37,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:37,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:08:37,303 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:37,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1325812653, now seen corresponding path program 12 times [2024-06-27 22:08:37,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:37,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146173732] [2024-06-27 22:08:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:38,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146173732] [2024-06-27 22:08:38,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146173732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:38,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:38,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:38,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472490212] [2024-06-27 22:08:38,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:38,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:38,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:38,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:38,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:38,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 773 transitions, 13761 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:38,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:40,302 INFO L124 PetriNetUnfolderBase]: 2156/3895 cut-off events. [2024-06-27 22:08:40,302 INFO L125 PetriNetUnfolderBase]: For 158140/158140 co-relation queries the response was YES. [2024-06-27 22:08:40,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30615 conditions, 3895 events. 2156/3895 cut-off events. For 158140/158140 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25688 event pairs, 223 based on Foata normal form. 1/3783 useless extension candidates. Maximal degree in co-relation 30456. Up to 2639 conditions per place. [2024-06-27 22:08:40,353 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 473 selfloop transitions, 358 changer transitions 0/838 dead transitions. [2024-06-27 22:08:40,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 838 transitions, 16262 flow [2024-06-27 22:08:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:08:40,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:08:40,355 INFO L175 Difference]: Start difference. First operand has 377 places, 773 transitions, 13761 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:08:40,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 838 transitions, 16262 flow [2024-06-27 22:08:41,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 838 transitions, 15869 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:41,408 INFO L231 Difference]: Finished difference. Result has 383 places, 809 transitions, 14635 flow [2024-06-27 22:08:41,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13368, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14635, PETRI_PLACES=383, PETRI_TRANSITIONS=809} [2024-06-27 22:08:41,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-27 22:08:41,409 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 809 transitions, 14635 flow [2024-06-27 22:08:41,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:41,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:41,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:08:41,409 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:41,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1989133107, now seen corresponding path program 11 times [2024-06-27 22:08:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:41,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795453951] [2024-06-27 22:08:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:41,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795453951] [2024-06-27 22:08:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795453951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:43,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:43,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778607747] [2024-06-27 22:08:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:43,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:43,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:43,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 809 transitions, 14635 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:43,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:43,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:43,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:44,389 INFO L124 PetriNetUnfolderBase]: 2162/3902 cut-off events. [2024-06-27 22:08:44,389 INFO L125 PetriNetUnfolderBase]: For 162322/162322 co-relation queries the response was YES. [2024-06-27 22:08:44,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31090 conditions, 3902 events. 2162/3902 cut-off events. For 162322/162322 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25687 event pairs, 220 based on Foata normal form. 1/3789 useless extension candidates. Maximal degree in co-relation 30929. Up to 2799 conditions per place. [2024-06-27 22:08:44,447 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 527 selfloop transitions, 308 changer transitions 0/842 dead transitions. [2024-06-27 22:08:44,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 842 transitions, 16686 flow [2024-06-27 22:08:44,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:08:44,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:08:44,448 INFO L175 Difference]: Start difference. First operand has 383 places, 809 transitions, 14635 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:08:44,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 842 transitions, 16686 flow [2024-06-27 22:08:45,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 842 transitions, 16255 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:45,491 INFO L231 Difference]: Finished difference. Result has 388 places, 814 transitions, 14904 flow [2024-06-27 22:08:45,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14212, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14904, PETRI_PLACES=388, PETRI_TRANSITIONS=814} [2024-06-27 22:08:45,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-27 22:08:45,493 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 814 transitions, 14904 flow [2024-06-27 22:08:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:45,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:45,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:08:45,493 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:45,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1330454283, now seen corresponding path program 13 times [2024-06-27 22:08:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512763391] [2024-06-27 22:08:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:46,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:46,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512763391] [2024-06-27 22:08:46,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512763391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:46,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:46,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285356473] [2024-06-27 22:08:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:46,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:47,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:47,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 814 transitions, 14904 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:47,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:47,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:47,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:48,572 INFO L124 PetriNetUnfolderBase]: 2186/3940 cut-off events. [2024-06-27 22:08:48,573 INFO L125 PetriNetUnfolderBase]: For 166576/166576 co-relation queries the response was YES. [2024-06-27 22:08:48,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31335 conditions, 3940 events. 2186/3940 cut-off events. For 166576/166576 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25960 event pairs, 224 based on Foata normal form. 1/3827 useless extension candidates. Maximal degree in co-relation 31173. Up to 2677 conditions per place. [2024-06-27 22:08:48,623 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 491 selfloop transitions, 359 changer transitions 0/857 dead transitions. [2024-06-27 22:08:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 857 transitions, 17243 flow [2024-06-27 22:08:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:08:48,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:08:48,625 INFO L175 Difference]: Start difference. First operand has 388 places, 814 transitions, 14904 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:08:48,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 857 transitions, 17243 flow [2024-06-27 22:08:49,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 857 transitions, 16731 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:49,752 INFO L231 Difference]: Finished difference. Result has 392 places, 827 transitions, 15287 flow [2024-06-27 22:08:49,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14392, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15287, PETRI_PLACES=392, PETRI_TRANSITIONS=827} [2024-06-27 22:08:49,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-27 22:08:49,753 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 827 transitions, 15287 flow [2024-06-27 22:08:49,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:49,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:49,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:49,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:08:49,754 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:49,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1330460793, now seen corresponding path program 14 times [2024-06-27 22:08:49,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:49,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890770744] [2024-06-27 22:08:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890770744] [2024-06-27 22:08:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890770744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:51,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762468464] [2024-06-27 22:08:51,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:51,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:51,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:51,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:51,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 827 transitions, 15287 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:51,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:51,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:51,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:52,756 INFO L124 PetriNetUnfolderBase]: 2184/3937 cut-off events. [2024-06-27 22:08:52,757 INFO L125 PetriNetUnfolderBase]: For 168538/168538 co-relation queries the response was YES. [2024-06-27 22:08:52,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31414 conditions, 3937 events. 2184/3937 cut-off events. For 168538/168538 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 25979 event pairs, 224 based on Foata normal form. 1/3824 useless extension candidates. Maximal degree in co-relation 31251. Up to 2675 conditions per place. [2024-06-27 22:08:52,815 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 481 selfloop transitions, 367 changer transitions 0/855 dead transitions. [2024-06-27 22:08:52,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 855 transitions, 17300 flow [2024-06-27 22:08:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:08:52,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:08:52,817 INFO L175 Difference]: Start difference. First operand has 392 places, 827 transitions, 15287 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:08:52,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 855 transitions, 17300 flow [2024-06-27 22:08:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 855 transitions, 16703 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:53,918 INFO L231 Difference]: Finished difference. Result has 396 places, 827 transitions, 15437 flow [2024-06-27 22:08:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14690, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15437, PETRI_PLACES=396, PETRI_TRANSITIONS=827} [2024-06-27 22:08:53,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 354 predicate places. [2024-06-27 22:08:53,919 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 827 transitions, 15437 flow [2024-06-27 22:08:53,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:53,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:53,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:53,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:08:53,920 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:53,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1330461041, now seen corresponding path program 9 times [2024-06-27 22:08:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:53,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774169699] [2024-06-27 22:08:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:55,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:55,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774169699] [2024-06-27 22:08:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774169699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595565392] [2024-06-27 22:08:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:55,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:55,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:08:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 827 transitions, 15437 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:55,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:08:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:57,319 INFO L124 PetriNetUnfolderBase]: 2288/4107 cut-off events. [2024-06-27 22:08:57,319 INFO L125 PetriNetUnfolderBase]: For 183282/183282 co-relation queries the response was YES. [2024-06-27 22:08:57,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32719 conditions, 4107 events. 2288/4107 cut-off events. For 183282/183282 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 27282 event pairs, 243 based on Foata normal form. 2/3995 useless extension candidates. Maximal degree in co-relation 32555. Up to 3005 conditions per place. [2024-06-27 22:08:57,374 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 661 selfloop transitions, 247 changer transitions 0/915 dead transitions. [2024-06-27 22:08:57,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 915 transitions, 18386 flow [2024-06-27 22:08:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:08:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:08:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 22:08:57,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:08:57,375 INFO L175 Difference]: Start difference. First operand has 396 places, 827 transitions, 15437 flow. Second operand 12 states and 210 transitions. [2024-06-27 22:08:57,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 915 transitions, 18386 flow [2024-06-27 22:08:58,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 915 transitions, 17613 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:58,562 INFO L231 Difference]: Finished difference. Result has 402 places, 883 transitions, 16132 flow [2024-06-27 22:08:58,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14664, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16132, PETRI_PLACES=402, PETRI_TRANSITIONS=883} [2024-06-27 22:08:58,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-27 22:08:58,563 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 883 transitions, 16132 flow [2024-06-27 22:08:58,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:58,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:58,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:08:58,564 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash -157971745, now seen corresponding path program 12 times [2024-06-27 22:08:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787330378] [2024-06-27 22:08:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:00,364 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 22:09:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787330378] [2024-06-27 22:09:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787330378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:00,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:00,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138579496] [2024-06-27 22:09:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:00,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:00,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 883 transitions, 16132 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:00,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:00,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:00,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:01,980 INFO L124 PetriNetUnfolderBase]: 2318/4153 cut-off events. [2024-06-27 22:09:01,981 INFO L125 PetriNetUnfolderBase]: For 182771/182771 co-relation queries the response was YES. [2024-06-27 22:09:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33576 conditions, 4153 events. 2318/4153 cut-off events. For 182771/182771 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27599 event pairs, 269 based on Foata normal form. 1/4039 useless extension candidates. Maximal degree in co-relation 33408. Up to 3427 conditions per place. [2024-06-27 22:09:02,042 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 809 selfloop transitions, 120 changer transitions 0/936 dead transitions. [2024-06-27 22:09:02,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 936 transitions, 18526 flow [2024-06-27 22:09:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:09:02,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:09:02,044 INFO L175 Difference]: Start difference. First operand has 402 places, 883 transitions, 16132 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:09:02,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 936 transitions, 18526 flow [2024-06-27 22:09:03,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 936 transitions, 18125 flow, removed 146 selfloop flow, removed 6 redundant places. [2024-06-27 22:09:03,293 INFO L231 Difference]: Finished difference. Result has 407 places, 911 transitions, 16473 flow [2024-06-27 22:09:03,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15735, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16473, PETRI_PLACES=407, PETRI_TRANSITIONS=911} [2024-06-27 22:09:03,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-27 22:09:03,309 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 911 transitions, 16473 flow [2024-06-27 22:09:03,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:03,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:03,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:09:03,309 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:03,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -157851589, now seen corresponding path program 15 times [2024-06-27 22:09:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864561353] [2024-06-27 22:09:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:05,051 INFO 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 22:09:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864561353] [2024-06-27 22:09:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864561353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:05,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:05,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:05,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359089208] [2024-06-27 22:09:05,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:05,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:05,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:05,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 911 transitions, 16473 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:05,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:05,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:05,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:06,680 INFO L124 PetriNetUnfolderBase]: 2386/4261 cut-off events. [2024-06-27 22:09:06,681 INFO L125 PetriNetUnfolderBase]: For 180220/180220 co-relation queries the response was YES. [2024-06-27 22:09:06,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33869 conditions, 4261 events. 2386/4261 cut-off events. For 180220/180220 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 28462 event pairs, 242 based on Foata normal form. 1/4147 useless extension candidates. Maximal degree in co-relation 33698. Up to 2960 conditions per place. [2024-06-27 22:09:06,745 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 564 selfloop transitions, 408 changer transitions 0/979 dead transitions. [2024-06-27 22:09:06,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 979 transitions, 19227 flow [2024-06-27 22:09:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:09:06,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:09:06,747 INFO L175 Difference]: Start difference. First operand has 407 places, 911 transitions, 16473 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:09:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 979 transitions, 19227 flow [2024-06-27 22:09:07,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 979 transitions, 19113 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 22:09:07,708 INFO L231 Difference]: Finished difference. Result has 415 places, 953 transitions, 17784 flow [2024-06-27 22:09:07,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16359, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17784, PETRI_PLACES=415, PETRI_TRANSITIONS=953} [2024-06-27 22:09:07,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-27 22:09:07,709 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 953 transitions, 17784 flow [2024-06-27 22:09:07,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:07,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:07,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:07,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:09:07,710 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:07,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash -157851775, now seen corresponding path program 13 times [2024-06-27 22:09:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:07,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155004980] [2024-06-27 22:09:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155004980] [2024-06-27 22:09:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155004980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496924050] [2024-06-27 22:09:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:09,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:09,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 953 transitions, 17784 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:09,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:09,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:09,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:11,053 INFO L124 PetriNetUnfolderBase]: 2426/4322 cut-off events. [2024-06-27 22:09:11,053 INFO L125 PetriNetUnfolderBase]: For 187435/187435 co-relation queries the response was YES. [2024-06-27 22:09:11,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35203 conditions, 4322 events. 2426/4322 cut-off events. For 187435/187435 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 28881 event pairs, 254 based on Foata normal form. 1/4208 useless extension candidates. Maximal degree in co-relation 35030. Up to 3169 conditions per place. [2024-06-27 22:09:11,127 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 649 selfloop transitions, 351 changer transitions 0/1007 dead transitions. [2024-06-27 22:09:11,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 1007 transitions, 20416 flow [2024-06-27 22:09:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:09:11,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:09:11,128 INFO L175 Difference]: Start difference. First operand has 415 places, 953 transitions, 17784 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:09:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 1007 transitions, 20416 flow [2024-06-27 22:09:12,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 1007 transitions, 19918 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:12,149 INFO L231 Difference]: Finished difference. Result has 421 places, 981 transitions, 18396 flow [2024-06-27 22:09:12,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17286, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18396, PETRI_PLACES=421, PETRI_TRANSITIONS=981} [2024-06-27 22:09:12,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-27 22:09:12,150 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 981 transitions, 18396 flow [2024-06-27 22:09:12,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:12,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:12,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:09:12,151 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:12,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash -153203449, now seen corresponding path program 16 times [2024-06-27 22:09:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241851217] [2024-06-27 22:09:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:12,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:13,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241851217] [2024-06-27 22:09:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241851217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494582783] [2024-06-27 22:09:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:14,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:14,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 981 transitions, 18396 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:14,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:15,625 INFO L124 PetriNetUnfolderBase]: 2460/4375 cut-off events. [2024-06-27 22:09:15,625 INFO L125 PetriNetUnfolderBase]: For 197504/197504 co-relation queries the response was YES. [2024-06-27 22:09:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35736 conditions, 4375 events. 2460/4375 cut-off events. For 197504/197504 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 29295 event pairs, 247 based on Foata normal form. 1/4261 useless extension candidates. Maximal degree in co-relation 35561. Up to 3060 conditions per place. [2024-06-27 22:09:15,692 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 606 selfloop transitions, 415 changer transitions 0/1028 dead transitions. [2024-06-27 22:09:15,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1028 transitions, 21222 flow [2024-06-27 22:09:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:09:15,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:09:15,693 INFO L175 Difference]: Start difference. First operand has 421 places, 981 transitions, 18396 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:09:15,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1028 transitions, 21222 flow [2024-06-27 22:09:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1028 transitions, 20747 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:16,776 INFO L231 Difference]: Finished difference. Result has 426 places, 999 transitions, 19029 flow [2024-06-27 22:09:16,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17921, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=981, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19029, PETRI_PLACES=426, PETRI_TRANSITIONS=999} [2024-06-27 22:09:16,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-27 22:09:16,777 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 999 transitions, 19029 flow [2024-06-27 22:09:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:16,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:16,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:16,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:09:16,777 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash -153210145, now seen corresponding path program 14 times [2024-06-27 22:09:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901768340] [2024-06-27 22:09:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:18,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901768340] [2024-06-27 22:09:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901768340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:18,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958312467] [2024-06-27 22:09:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:18,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:18,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:18,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 999 transitions, 19029 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:18,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:18,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:18,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:20,185 INFO L124 PetriNetUnfolderBase]: 2476/4400 cut-off events. [2024-06-27 22:09:20,185 INFO L125 PetriNetUnfolderBase]: For 204920/204920 co-relation queries the response was YES. [2024-06-27 22:09:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36119 conditions, 4400 events. 2476/4400 cut-off events. For 204920/204920 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 29427 event pairs, 257 based on Foata normal form. 1/4286 useless extension candidates. Maximal degree in co-relation 35943. Up to 3239 conditions per place. [2024-06-27 22:09:20,252 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 674 selfloop transitions, 355 changer transitions 0/1036 dead transitions. [2024-06-27 22:09:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 1036 transitions, 21610 flow [2024-06-27 22:09:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:09:20,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:09:20,254 INFO L175 Difference]: Start difference. First operand has 426 places, 999 transitions, 19029 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:09:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 1036 transitions, 21610 flow [2024-06-27 22:09:21,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1036 transitions, 20845 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 22:09:21,470 INFO L231 Difference]: Finished difference. Result has 430 places, 1008 transitions, 19142 flow [2024-06-27 22:09:21,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18264, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19142, PETRI_PLACES=430, PETRI_TRANSITIONS=1008} [2024-06-27 22:09:21,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-27 22:09:21,471 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1008 transitions, 19142 flow [2024-06-27 22:09:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:21,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:21,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:09:21,472 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:21,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash -153209959, now seen corresponding path program 17 times [2024-06-27 22:09:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:21,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287130594] [2024-06-27 22:09:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:21,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:23,294 INFO 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 22:09:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287130594] [2024-06-27 22:09:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287130594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064807808] [2024-06-27 22:09:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:23,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:23,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1008 transitions, 19142 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:23,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:23,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:23,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:25,032 INFO L124 PetriNetUnfolderBase]: 2474/4397 cut-off events. [2024-06-27 22:09:25,032 INFO L125 PetriNetUnfolderBase]: For 204520/204520 co-relation queries the response was YES. [2024-06-27 22:09:25,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35899 conditions, 4397 events. 2474/4397 cut-off events. For 204520/204520 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29421 event pairs, 246 based on Foata normal form. 1/4283 useless extension candidates. Maximal degree in co-relation 35722. Up to 3082 conditions per place. [2024-06-27 22:09:25,098 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 621 selfloop transitions, 410 changer transitions 0/1038 dead transitions. [2024-06-27 22:09:25,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1038 transitions, 21609 flow [2024-06-27 22:09:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:09:25,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:09:25,100 INFO L175 Difference]: Start difference. First operand has 430 places, 1008 transitions, 19142 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:09:25,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1038 transitions, 21609 flow [2024-06-27 22:09:26,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1038 transitions, 20911 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:26,601 INFO L231 Difference]: Finished difference. Result has 433 places, 1008 transitions, 19285 flow [2024-06-27 22:09:26,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18444, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19285, PETRI_PLACES=433, PETRI_TRANSITIONS=1008} [2024-06-27 22:09:26,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 22:09:26,604 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1008 transitions, 19285 flow [2024-06-27 22:09:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:26,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:26,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:09:26,604 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:26,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -153203201, now seen corresponding path program 10 times [2024-06-27 22:09:26,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:26,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286233050] [2024-06-27 22:09:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:26,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:28,132 INFO 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 22:09:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286233050] [2024-06-27 22:09:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286233050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16601520] [2024-06-27 22:09:28,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:28,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:28,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1008 transitions, 19285 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:28,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:28,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:30,333 INFO L124 PetriNetUnfolderBase]: 2876/5387 cut-off events. [2024-06-27 22:09:30,334 INFO L125 PetriNetUnfolderBase]: For 221421/221421 co-relation queries the response was YES. [2024-06-27 22:09:30,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41032 conditions, 5387 events. 2876/5387 cut-off events. For 221421/221421 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 39893 event pairs, 248 based on Foata normal form. 2/5192 useless extension candidates. Maximal degree in co-relation 40854. Up to 3442 conditions per place. [2024-06-27 22:09:30,423 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 826 selfloop transitions, 380 changer transitions 0/1213 dead transitions. [2024-06-27 22:09:30,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1213 transitions, 24515 flow [2024-06-27 22:09:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:09:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:09:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 257 transitions. [2024-06-27 22:09:30,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830827067669173 [2024-06-27 22:09:30,425 INFO L175 Difference]: Start difference. First operand has 433 places, 1008 transitions, 19285 flow. Second operand 14 states and 257 transitions. [2024-06-27 22:09:30,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 1213 transitions, 24515 flow [2024-06-27 22:09:32,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1213 transitions, 23660 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:09:32,039 INFO L231 Difference]: Finished difference. Result has 444 places, 1138 transitions, 21565 flow [2024-06-27 22:09:32,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18430, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21565, PETRI_PLACES=444, PETRI_TRANSITIONS=1138} [2024-06-27 22:09:32,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-27 22:09:32,040 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1138 transitions, 21565 flow [2024-06-27 22:09:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:32,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:32,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:09:32,041 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:32,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1036261471, now seen corresponding path program 11 times [2024-06-27 22:09:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:32,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084967092] [2024-06-27 22:09:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084967092] [2024-06-27 22:09:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084967092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92868262] [2024-06-27 22:09:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:33,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:33,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:33,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1138 transitions, 21565 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:33,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:33,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:35,910 INFO L124 PetriNetUnfolderBase]: 3072/5850 cut-off events. [2024-06-27 22:09:35,911 INFO L125 PetriNetUnfolderBase]: For 240145/240145 co-relation queries the response was YES. [2024-06-27 22:09:35,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45059 conditions, 5850 events. 3072/5850 cut-off events. For 240145/240145 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 44847 event pairs, 261 based on Foata normal form. 2/5618 useless extension candidates. Maximal degree in co-relation 44875. Up to 3311 conditions per place. [2024-06-27 22:09:36,005 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 892 selfloop transitions, 372 changer transitions 0/1271 dead transitions. [2024-06-27 22:09:36,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1271 transitions, 26055 flow [2024-06-27 22:09:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:09:36,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:09:36,006 INFO L175 Difference]: Start difference. First operand has 444 places, 1138 transitions, 21565 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:09:36,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1271 transitions, 26055 flow [2024-06-27 22:09:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1271 transitions, 25595 flow, removed 209 selfloop flow, removed 3 redundant places. [2024-06-27 22:09:37,691 INFO L231 Difference]: Finished difference. Result has 456 places, 1201 transitions, 23301 flow [2024-06-27 22:09:37,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21143, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23301, PETRI_PLACES=456, PETRI_TRANSITIONS=1201} [2024-06-27 22:09:37,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-27 22:09:37,692 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 1201 transitions, 23301 flow [2024-06-27 22:09:37,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:37,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:37,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:09:37,693 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:37,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 19517329, now seen corresponding path program 12 times [2024-06-27 22:09:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027622779] [2024-06-27 22:09:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:39,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027622779] [2024-06-27 22:09:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027622779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173949388] [2024-06-27 22:09:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:39,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:39,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 1201 transitions, 23301 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:39,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:39,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:39,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:41,700 INFO L124 PetriNetUnfolderBase]: 3105/5914 cut-off events. [2024-06-27 22:09:41,700 INFO L125 PetriNetUnfolderBase]: For 243812/243812 co-relation queries the response was YES. [2024-06-27 22:09:41,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47567 conditions, 5914 events. 3105/5914 cut-off events. For 243812/243812 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 45427 event pairs, 251 based on Foata normal form. 2/5679 useless extension candidates. Maximal degree in co-relation 47375. Up to 3689 conditions per place. [2024-06-27 22:09:41,794 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 866 selfloop transitions, 416 changer transitions 0/1289 dead transitions. [2024-06-27 22:09:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1289 transitions, 27120 flow [2024-06-27 22:09:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:09:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:09:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 261 transitions. [2024-06-27 22:09:41,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906015037593985 [2024-06-27 22:09:41,795 INFO L175 Difference]: Start difference. First operand has 456 places, 1201 transitions, 23301 flow. Second operand 14 states and 261 transitions. [2024-06-27 22:09:41,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1289 transitions, 27120 flow [2024-06-27 22:09:43,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1289 transitions, 26617 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:43,170 INFO L231 Difference]: Finished difference. Result has 468 places, 1221 transitions, 24164 flow [2024-06-27 22:09:43,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=22849, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24164, PETRI_PLACES=468, PETRI_TRANSITIONS=1221} [2024-06-27 22:09:43,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-27 22:09:43,171 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1221 transitions, 24164 flow [2024-06-27 22:09:43,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:43,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:43,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:43,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:09:43,174 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:43,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 19286441, now seen corresponding path program 18 times [2024-06-27 22:09:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:43,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001216274] [2024-06-27 22:09:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:44,921 INFO 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 22:09:44,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001216274] [2024-06-27 22:09:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001216274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:44,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004951159] [2024-06-27 22:09:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:44,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:45,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:45,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1221 transitions, 24164 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:45,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:45,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:45,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:47,120 INFO L124 PetriNetUnfolderBase]: 3151/5924 cut-off events. [2024-06-27 22:09:47,120 INFO L125 PetriNetUnfolderBase]: For 253533/253533 co-relation queries the response was YES. [2024-06-27 22:09:47,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47993 conditions, 5924 events. 3151/5924 cut-off events. For 253533/253533 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 45033 event pairs, 270 based on Foata normal form. 1/5702 useless extension candidates. Maximal degree in co-relation 47799. Up to 4151 conditions per place. [2024-06-27 22:09:47,226 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 836 selfloop transitions, 434 changer transitions 0/1277 dead transitions. [2024-06-27 22:09:47,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1277 transitions, 27690 flow [2024-06-27 22:09:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:09:47,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:09:47,228 INFO L175 Difference]: Start difference. First operand has 468 places, 1221 transitions, 24164 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:09:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1277 transitions, 27690 flow [2024-06-27 22:09:49,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1277 transitions, 27057 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:49,457 INFO L231 Difference]: Finished difference. Result has 473 places, 1246 transitions, 24796 flow [2024-06-27 22:09:49,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23531, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24796, PETRI_PLACES=473, PETRI_TRANSITIONS=1246} [2024-06-27 22:09:49,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 431 predicate places. [2024-06-27 22:09:49,458 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1246 transitions, 24796 flow [2024-06-27 22:09:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:49,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:49,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:49,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:09:49,458 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:49,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash 19517081, now seen corresponding path program 19 times [2024-06-27 22:09:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:49,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111908852] [2024-06-27 22:09:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:51,167 INFO 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 22:09:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111908852] [2024-06-27 22:09:51,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111908852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:51,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:51,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:51,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751632509] [2024-06-27 22:09:51,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:51,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:51,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:51,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:51,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:51,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1246 transitions, 24796 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:51,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:51,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:51,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:53,439 INFO L124 PetriNetUnfolderBase]: 3149/5921 cut-off events. [2024-06-27 22:09:53,439 INFO L125 PetriNetUnfolderBase]: For 255394/255394 co-relation queries the response was YES. [2024-06-27 22:09:53,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47704 conditions, 5921 events. 3149/5921 cut-off events. For 255394/255394 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 44999 event pairs, 270 based on Foata normal form. 1/5699 useless extension candidates. Maximal degree in co-relation 47509. Up to 4149 conditions per place. [2024-06-27 22:09:53,536 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 806 selfloop transitions, 459 changer transitions 0/1272 dead transitions. [2024-06-27 22:09:53,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1272 transitions, 27667 flow [2024-06-27 22:09:53,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:09:53,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:09:53,538 INFO L175 Difference]: Start difference. First operand has 473 places, 1246 transitions, 24796 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:09:53,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1272 transitions, 27667 flow [2024-06-27 22:09:55,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1272 transitions, 26924 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:55,422 INFO L231 Difference]: Finished difference. Result has 478 places, 1246 transitions, 24987 flow [2024-06-27 22:09:55,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24053, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24987, PETRI_PLACES=478, PETRI_TRANSITIONS=1246} [2024-06-27 22:09:55,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 22:09:55,423 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 1246 transitions, 24987 flow [2024-06-27 22:09:55,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:55,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:55,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:09:55,423 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash 19286689, now seen corresponding path program 13 times [2024-06-27 22:09:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080302043] [2024-06-27 22:09:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:56,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080302043] [2024-06-27 22:09:56,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080302043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:56,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:56,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:56,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649172690] [2024-06-27 22:09:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:56,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:56,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:09:56,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1246 transitions, 24987 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:56,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:56,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:09:56,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:59,533 INFO L124 PetriNetUnfolderBase]: 3144/5974 cut-off events. [2024-06-27 22:09:59,533 INFO L125 PetriNetUnfolderBase]: For 257700/257700 co-relation queries the response was YES. [2024-06-27 22:09:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47677 conditions, 5974 events. 3144/5974 cut-off events. For 257700/257700 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 45887 event pairs, 253 based on Foata normal form. 2/5739 useless extension candidates. Maximal degree in co-relation 47481. Up to 3750 conditions per place. [2024-06-27 22:09:59,625 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 901 selfloop transitions, 405 changer transitions 0/1313 dead transitions. [2024-06-27 22:09:59,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1313 transitions, 28256 flow [2024-06-27 22:09:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:09:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:09:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-06-27 22:09:59,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-06-27 22:09:59,627 INFO L175 Difference]: Start difference. First operand has 478 places, 1246 transitions, 24987 flow. Second operand 14 states and 260 transitions. [2024-06-27 22:09:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1313 transitions, 28256 flow [2024-06-27 22:10:01,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1313 transitions, 27271 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:01,219 INFO L231 Difference]: Finished difference. Result has 486 places, 1246 transitions, 24951 flow [2024-06-27 22:10:01,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23948, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=838, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24951, PETRI_PLACES=486, PETRI_TRANSITIONS=1246} [2024-06-27 22:10:01,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-27 22:10:01,220 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 1246 transitions, 24951 flow [2024-06-27 22:10:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:01,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:01,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:10:01,220 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:01,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 19279745, now seen corresponding path program 15 times [2024-06-27 22:10:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589351233] [2024-06-27 22:10:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589351233] [2024-06-27 22:10:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589351233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753650451] [2024-06-27 22:10:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:03,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:03,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:03,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:03,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:03,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1246 transitions, 24951 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:03,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:03,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:03,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:05,195 INFO L124 PetriNetUnfolderBase]: 3146/5915 cut-off events. [2024-06-27 22:10:05,195 INFO L125 PetriNetUnfolderBase]: For 256637/256637 co-relation queries the response was YES. [2024-06-27 22:10:05,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47841 conditions, 5915 events. 3146/5915 cut-off events. For 256637/256637 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 44951 event pairs, 285 based on Foata normal form. 1/5693 useless extension candidates. Maximal degree in co-relation 47642. Up to 4311 conditions per place. [2024-06-27 22:10:05,300 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 897 selfloop transitions, 370 changer transitions 0/1274 dead transitions. [2024-06-27 22:10:05,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1274 transitions, 27705 flow [2024-06-27 22:10:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:10:05,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:10:05,302 INFO L175 Difference]: Start difference. First operand has 486 places, 1246 transitions, 24951 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:10:05,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 1274 transitions, 27705 flow [2024-06-27 22:10:07,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1274 transitions, 26899 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:07,743 INFO L231 Difference]: Finished difference. Result has 488 places, 1249 transitions, 24945 flow [2024-06-27 22:10:07,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24145, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24945, PETRI_PLACES=488, PETRI_TRANSITIONS=1249} [2024-06-27 22:10:07,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-27 22:10:07,744 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1249 transitions, 24945 flow [2024-06-27 22:10:07,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:07,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:07,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:10:07,745 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:07,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash 19279931, now seen corresponding path program 20 times [2024-06-27 22:10:07,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:07,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932300698] [2024-06-27 22:10:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:09,436 INFO 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 22:10:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932300698] [2024-06-27 22:10:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932300698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:09,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:09,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198011998] [2024-06-27 22:10:09,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:09,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:09,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1249 transitions, 24945 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:09,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:09,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:09,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:11,990 INFO L124 PetriNetUnfolderBase]: 3144/5913 cut-off events. [2024-06-27 22:10:11,990 INFO L125 PetriNetUnfolderBase]: For 253252/253252 co-relation queries the response was YES. [2024-06-27 22:10:12,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47468 conditions, 5913 events. 3144/5913 cut-off events. For 253252/253252 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44997 event pairs, 268 based on Foata normal form. 1/5691 useless extension candidates. Maximal degree in co-relation 47267. Up to 4142 conditions per place. [2024-06-27 22:10:12,097 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 832 selfloop transitions, 437 changer transitions 0/1276 dead transitions. [2024-06-27 22:10:12,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1276 transitions, 27689 flow [2024-06-27 22:10:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:10:12,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:10:12,101 INFO L175 Difference]: Start difference. First operand has 488 places, 1249 transitions, 24945 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:10:12,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1276 transitions, 27689 flow [2024-06-27 22:10:14,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1276 transitions, 27042 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:14,476 INFO L231 Difference]: Finished difference. Result has 491 places, 1249 transitions, 25189 flow [2024-06-27 22:10:14,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24298, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25189, PETRI_PLACES=491, PETRI_TRANSITIONS=1249} [2024-06-27 22:10:14,477 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-27 22:10:14,477 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 1249 transitions, 25189 flow [2024-06-27 22:10:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:14,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:14,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:14,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:10:14,478 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:14,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1005938763, now seen corresponding path program 1 times [2024-06-27 22:10:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282289118] [2024-06-27 22:10:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:14,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:14,548 INFO 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 22:10:14,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282289118] [2024-06-27 22:10:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282289118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:14,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:14,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:10:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963528639] [2024-06-27 22:10:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:10:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:10:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:10:14,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 22:10:14,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1249 transitions, 25189 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:14,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:14,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 22:10:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:15,353 INFO L124 PetriNetUnfolderBase]: 1348/2473 cut-off events. [2024-06-27 22:10:15,353 INFO L125 PetriNetUnfolderBase]: For 127265/127341 co-relation queries the response was YES. [2024-06-27 22:10:15,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21873 conditions, 2473 events. 1348/2473 cut-off events. For 127265/127341 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 15465 event pairs, 189 based on Foata normal form. 225/2444 useless extension candidates. Maximal degree in co-relation 21683. Up to 915 conditions per place. [2024-06-27 22:10:15,394 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 249 selfloop transitions, 73 changer transitions 0/827 dead transitions. [2024-06-27 22:10:15,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 827 transitions, 17566 flow [2024-06-27 22:10:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:10:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:10:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-27 22:10:15,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7039473684210527 [2024-06-27 22:10:15,395 INFO L175 Difference]: Start difference. First operand has 491 places, 1249 transitions, 25189 flow. Second operand 4 states and 107 transitions. [2024-06-27 22:10:15,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 827 transitions, 17566 flow [2024-06-27 22:10:16,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 827 transitions, 14495 flow, removed 286 selfloop flow, removed 89 redundant places. [2024-06-27 22:10:16,211 INFO L231 Difference]: Finished difference. Result has 403 places, 812 transitions, 14041 flow [2024-06-27 22:10:16,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13713, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=14041, PETRI_PLACES=403, PETRI_TRANSITIONS=812} [2024-06-27 22:10:16,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-06-27 22:10:16,211 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 812 transitions, 14041 flow [2024-06-27 22:10:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:16,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:16,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:10:16,212 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:16,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash -465866124, now seen corresponding path program 1 times [2024-06-27 22:10:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47432341] [2024-06-27 22:10:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:17,558 INFO 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 22:10:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47432341] [2024-06-27 22:10:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47432341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714003954] [2024-06-27 22:10:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:17,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:17,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 812 transitions, 14041 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:17,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:17,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:17,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:18,540 INFO L124 PetriNetUnfolderBase]: 1426/2619 cut-off events. [2024-06-27 22:10:18,540 INFO L125 PetriNetUnfolderBase]: For 245138/245138 co-relation queries the response was YES. [2024-06-27 22:10:18,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24180 conditions, 2619 events. 1426/2619 cut-off events. For 245138/245138 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16164 event pairs, 220 based on Foata normal form. 3/2521 useless extension candidates. Maximal degree in co-relation 24023. Up to 1560 conditions per place. [2024-06-27 22:10:18,578 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 610 selfloop transitions, 245 changer transitions 0/863 dead transitions. [2024-06-27 22:10:18,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 863 transitions, 16894 flow [2024-06-27 22:10:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:10:18,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:10:18,580 INFO L175 Difference]: Start difference. First operand has 403 places, 812 transitions, 14041 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:10:18,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 863 transitions, 16894 flow [2024-06-27 22:10:20,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 863 transitions, 16737 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:10:20,185 INFO L231 Difference]: Finished difference. Result has 411 places, 821 transitions, 14569 flow [2024-06-27 22:10:20,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13888, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14569, PETRI_PLACES=411, PETRI_TRANSITIONS=821} [2024-06-27 22:10:20,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 22:10:20,186 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 821 transitions, 14569 flow [2024-06-27 22:10:20,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:20,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:20,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:20,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:10:20,187 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:20,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1758552653, now seen corresponding path program 1 times [2024-06-27 22:10:20,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:20,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701921470] [2024-06-27 22:10:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:20,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:21,703 INFO 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 22:10:21,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701921470] [2024-06-27 22:10:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701921470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:21,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:21,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169711866] [2024-06-27 22:10:21,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:21,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:21,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:21,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 821 transitions, 14569 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:21,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:21,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:21,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:22,790 INFO L124 PetriNetUnfolderBase]: 1447/2654 cut-off events. [2024-06-27 22:10:22,791 INFO L125 PetriNetUnfolderBase]: For 246329/246329 co-relation queries the response was YES. [2024-06-27 22:10:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25106 conditions, 2654 events. 1447/2654 cut-off events. For 246329/246329 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 16382 event pairs, 218 based on Foata normal form. 1/2554 useless extension candidates. Maximal degree in co-relation 24947. Up to 2363 conditions per place. [2024-06-27 22:10:22,831 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 786 selfloop transitions, 52 changer transitions 0/846 dead transitions. [2024-06-27 22:10:22,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 846 transitions, 16603 flow [2024-06-27 22:10:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:10:22,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-27 22:10:22,836 INFO L175 Difference]: Start difference. First operand has 411 places, 821 transitions, 14569 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:10:22,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 846 transitions, 16603 flow [2024-06-27 22:10:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 846 transitions, 16339 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:10:24,454 INFO L231 Difference]: Finished difference. Result has 419 places, 827 transitions, 14499 flow [2024-06-27 22:10:24,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14305, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14499, PETRI_PLACES=419, PETRI_TRANSITIONS=827} [2024-06-27 22:10:24,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-27 22:10:24,455 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 827 transitions, 14499 flow [2024-06-27 22:10:24,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:24,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:24,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:24,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:10:24,456 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:24,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1462509541, now seen corresponding path program 2 times [2024-06-27 22:10:24,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107161816] [2024-06-27 22:10:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:26,026 INFO 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 22:10:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107161816] [2024-06-27 22:10:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107161816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:26,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:26,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:26,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124175370] [2024-06-27 22:10:26,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:26,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:26,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:26,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 827 transitions, 14499 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:26,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:26,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:26,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:27,115 INFO L124 PetriNetUnfolderBase]: 1445/2651 cut-off events. [2024-06-27 22:10:27,115 INFO L125 PetriNetUnfolderBase]: For 243491/243491 co-relation queries the response was YES. [2024-06-27 22:10:27,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24947 conditions, 2651 events. 1445/2651 cut-off events. For 243491/243491 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 16378 event pairs, 218 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 24785. Up to 2377 conditions per place. [2024-06-27 22:10:27,154 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 786 selfloop transitions, 48 changer transitions 0/842 dead transitions. [2024-06-27 22:10:27,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 842 transitions, 16243 flow [2024-06-27 22:10:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 22:10:27,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 22:10:27,156 INFO L175 Difference]: Start difference. First operand has 419 places, 827 transitions, 14499 flow. Second operand 10 states and 152 transitions. [2024-06-27 22:10:27,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 842 transitions, 16243 flow [2024-06-27 22:10:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 842 transitions, 16164 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:10:28,884 INFO L231 Difference]: Finished difference. Result has 423 places, 827 transitions, 14526 flow [2024-06-27 22:10:28,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14420, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14526, PETRI_PLACES=423, PETRI_TRANSITIONS=827} [2024-06-27 22:10:28,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-27 22:10:28,885 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 827 transitions, 14526 flow [2024-06-27 22:10:28,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:28,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:28,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:28,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:10:28,886 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:28,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1462509696, now seen corresponding path program 2 times [2024-06-27 22:10:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:28,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117501321] [2024-06-27 22:10:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:30,187 INFO 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 22:10:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117501321] [2024-06-27 22:10:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117501321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:30,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469207222] [2024-06-27 22:10:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:30,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:30,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 827 transitions, 14526 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:30,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:30,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:30,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:31,209 INFO L124 PetriNetUnfolderBase]: 1439/2642 cut-off events. [2024-06-27 22:10:31,210 INFO L125 PetriNetUnfolderBase]: For 243273/243273 co-relation queries the response was YES. [2024-06-27 22:10:31,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 2642 events. 1439/2642 cut-off events. For 243273/243273 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 16308 event pairs, 215 based on Foata normal form. 3/2544 useless extension candidates. Maximal degree in co-relation 24503. Up to 2358 conditions per place. [2024-06-27 22:10:31,249 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 789 selfloop transitions, 48 changer transitions 0/845 dead transitions. [2024-06-27 22:10:31,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 845 transitions, 16317 flow [2024-06-27 22:10:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:10:31,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-27 22:10:31,250 INFO L175 Difference]: Start difference. First operand has 423 places, 827 transitions, 14526 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:10:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 845 transitions, 16317 flow [2024-06-27 22:10:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 845 transitions, 16213 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:32,712 INFO L231 Difference]: Finished difference. Result has 424 places, 828 transitions, 14551 flow [2024-06-27 22:10:32,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14422, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14551, PETRI_PLACES=424, PETRI_TRANSITIONS=828} [2024-06-27 22:10:32,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 22:10:32,713 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 828 transitions, 14551 flow [2024-06-27 22:10:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:32,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:10:32,714 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:32,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1762361933, now seen corresponding path program 3 times [2024-06-27 22:10:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636125694] [2024-06-27 22:10:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:34,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636125694] [2024-06-27 22:10:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636125694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:34,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:34,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816267200] [2024-06-27 22:10:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:34,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:34,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:34,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 828 transitions, 14551 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:34,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:34,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:34,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:35,123 INFO L124 PetriNetUnfolderBase]: 1445/2652 cut-off events. [2024-06-27 22:10:35,123 INFO L125 PetriNetUnfolderBase]: For 237749/237749 co-relation queries the response was YES. [2024-06-27 22:10:35,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24799 conditions, 2652 events. 1445/2652 cut-off events. For 237749/237749 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 16387 event pairs, 217 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 24634. Up to 2276 conditions per place. [2024-06-27 22:10:35,165 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 704 selfloop transitions, 134 changer transitions 0/846 dead transitions. [2024-06-27 22:10:35,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 846 transitions, 16383 flow [2024-06-27 22:10:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:10:35,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-27 22:10:35,166 INFO L175 Difference]: Start difference. First operand has 424 places, 828 transitions, 14551 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:10:35,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 846 transitions, 16383 flow [2024-06-27 22:10:36,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 846 transitions, 16279 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:36,680 INFO L231 Difference]: Finished difference. Result has 426 places, 830 transitions, 14756 flow [2024-06-27 22:10:36,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14447, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14756, PETRI_PLACES=426, PETRI_TRANSITIONS=830} [2024-06-27 22:10:36,681 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-27 22:10:36,681 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 830 transitions, 14756 flow [2024-06-27 22:10:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:36,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:36,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:10:36,682 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:36,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1900895818, now seen corresponding path program 3 times [2024-06-27 22:10:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015425491] [2024-06-27 22:10:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:37,929 INFO 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 22:10:37,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015425491] [2024-06-27 22:10:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015425491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:37,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356297672] [2024-06-27 22:10:37,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:37,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:38,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 830 transitions, 14756 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:39,017 INFO L124 PetriNetUnfolderBase]: 1441/2645 cut-off events. [2024-06-27 22:10:39,018 INFO L125 PetriNetUnfolderBase]: For 237924/237924 co-relation queries the response was YES. [2024-06-27 22:10:39,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 2645 events. 1441/2645 cut-off events. For 237924/237924 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 16328 event pairs, 213 based on Foata normal form. 3/2544 useless extension candidates. Maximal degree in co-relation 24481. Up to 1593 conditions per place. [2024-06-27 22:10:39,060 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 608 selfloop transitions, 252 changer transitions 0/868 dead transitions. [2024-06-27 22:10:39,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 868 transitions, 17255 flow [2024-06-27 22:10:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:10:39,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:10:39,062 INFO L175 Difference]: Start difference. First operand has 426 places, 830 transitions, 14756 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:10:39,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 868 transitions, 17255 flow [2024-06-27 22:10:40,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 868 transitions, 16960 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:40,250 INFO L231 Difference]: Finished difference. Result has 428 places, 830 transitions, 14975 flow [2024-06-27 22:10:40,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14461, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14975, PETRI_PLACES=428, PETRI_TRANSITIONS=830} [2024-06-27 22:10:40,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 22:10:40,254 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 830 transitions, 14975 flow [2024-06-27 22:10:40,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:40,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:40,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:10:40,254 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1466234563, now seen corresponding path program 1 times [2024-06-27 22:10:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649506659] [2024-06-27 22:10:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:41,773 INFO 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 22:10:41,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649506659] [2024-06-27 22:10:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649506659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:41,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:41,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749715144] [2024-06-27 22:10:41,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:41,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:41,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:41,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:41,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:41,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 830 transitions, 14975 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:41,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:41,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:41,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:42,906 INFO L124 PetriNetUnfolderBase]: 1450/2657 cut-off events. [2024-06-27 22:10:42,906 INFO L125 PetriNetUnfolderBase]: For 237916/237916 co-relation queries the response was YES. [2024-06-27 22:10:42,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25037 conditions, 2657 events. 1450/2657 cut-off events. For 237916/237916 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 16404 event pairs, 209 based on Foata normal form. 2/2553 useless extension candidates. Maximal degree in co-relation 24870. Up to 1785 conditions per place. [2024-06-27 22:10:42,946 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 562 selfloop transitions, 290 changer transitions 0/860 dead transitions. [2024-06-27 22:10:42,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 860 transitions, 17180 flow [2024-06-27 22:10:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:10:42,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-27 22:10:42,947 INFO L175 Difference]: Start difference. First operand has 428 places, 830 transitions, 14975 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:10:42,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 860 transitions, 17180 flow [2024-06-27 22:10:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 860 transitions, 16637 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:44,161 INFO L231 Difference]: Finished difference. Result has 431 places, 833 transitions, 15263 flow [2024-06-27 22:10:44,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14434, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15263, PETRI_PLACES=431, PETRI_TRANSITIONS=833} [2024-06-27 22:10:44,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-27 22:10:44,162 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 833 transitions, 15263 flow [2024-06-27 22:10:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:44,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:44,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:10:44,163 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:44,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1826353069, now seen corresponding path program 2 times [2024-06-27 22:10:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635605103] [2024-06-27 22:10:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:45,658 INFO 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 22:10:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635605103] [2024-06-27 22:10:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635605103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:45,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129762917] [2024-06-27 22:10:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:45,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:45,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 833 transitions, 15263 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:45,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:45,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:46,985 INFO L124 PetriNetUnfolderBase]: 1476/2698 cut-off events. [2024-06-27 22:10:46,985 INFO L125 PetriNetUnfolderBase]: For 254965/254965 co-relation queries the response was YES. [2024-06-27 22:10:47,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25783 conditions, 2698 events. 1476/2698 cut-off events. For 254965/254965 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 16652 event pairs, 214 based on Foata normal form. 2/2593 useless extension candidates. Maximal degree in co-relation 25615. Up to 1808 conditions per place. [2024-06-27 22:10:47,022 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 641 selfloop transitions, 223 changer transitions 0/872 dead transitions. [2024-06-27 22:10:47,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 872 transitions, 17870 flow [2024-06-27 22:10:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:10:47,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-27 22:10:47,025 INFO L175 Difference]: Start difference. First operand has 431 places, 833 transitions, 15263 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:10:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 872 transitions, 17870 flow [2024-06-27 22:10:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 872 transitions, 17391 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:10:48,231 INFO L231 Difference]: Finished difference. Result has 432 places, 837 transitions, 15319 flow [2024-06-27 22:10:48,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14792, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15319, PETRI_PLACES=432, PETRI_TRANSITIONS=837} [2024-06-27 22:10:48,231 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-27 22:10:48,232 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 837 transitions, 15319 flow [2024-06-27 22:10:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:48,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:48,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:10:48,232 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:48,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1610119141, now seen corresponding path program 4 times [2024-06-27 22:10:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473800022] [2024-06-27 22:10:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:49,707 INFO 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 22:10:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:49,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473800022] [2024-06-27 22:10:49,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473800022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:49,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:49,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254180642] [2024-06-27 22:10:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:49,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:49,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 837 transitions, 15319 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:49,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:49,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:50,767 INFO L124 PetriNetUnfolderBase]: 1482/2709 cut-off events. [2024-06-27 22:10:50,767 INFO L125 PetriNetUnfolderBase]: For 253566/253566 co-relation queries the response was YES. [2024-06-27 22:10:50,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25869 conditions, 2709 events. 1482/2709 cut-off events. For 253566/253566 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 16741 event pairs, 216 based on Foata normal form. 1/2604 useless extension candidates. Maximal degree in co-relation 25700. Up to 2333 conditions per place. [2024-06-27 22:10:50,804 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 722 selfloop transitions, 127 changer transitions 0/857 dead transitions. [2024-06-27 22:10:50,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 857 transitions, 17281 flow [2024-06-27 22:10:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:10:50,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-27 22:10:50,805 INFO L175 Difference]: Start difference. First operand has 432 places, 837 transitions, 15319 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:10:50,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 857 transitions, 17281 flow [2024-06-27 22:10:52,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 857 transitions, 16982 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:52,147 INFO L231 Difference]: Finished difference. Result has 435 places, 839 transitions, 15319 flow [2024-06-27 22:10:52,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15020, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15319, PETRI_PLACES=435, PETRI_TRANSITIONS=839} [2024-06-27 22:10:52,148 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-27 22:10:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 839 transitions, 15319 flow [2024-06-27 22:10:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:52,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:52,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:10:52,149 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1610119296, now seen corresponding path program 4 times [2024-06-27 22:10:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873849681] [2024-06-27 22:10:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:53,550 INFO 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 22:10:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873849681] [2024-06-27 22:10:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873849681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:53,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049420526] [2024-06-27 22:10:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:53,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:53,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:53,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 839 transitions, 15319 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:53,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:53,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:53,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:54,749 INFO L124 PetriNetUnfolderBase]: 1520/2766 cut-off events. [2024-06-27 22:10:54,749 INFO L125 PetriNetUnfolderBase]: For 285467/285467 co-relation queries the response was YES. [2024-06-27 22:10:54,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26444 conditions, 2766 events. 1520/2766 cut-off events. For 285467/285467 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 17097 event pairs, 214 based on Foata normal form. 3/2659 useless extension candidates. Maximal degree in co-relation 26274. Up to 1660 conditions per place. [2024-06-27 22:10:54,794 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 707 selfloop transitions, 180 changer transitions 0/895 dead transitions. [2024-06-27 22:10:54,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 895 transitions, 18432 flow [2024-06-27 22:10:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:10:54,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:10:54,796 INFO L175 Difference]: Start difference. First operand has 435 places, 839 transitions, 15319 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:10:54,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 895 transitions, 18432 flow [2024-06-27 22:10:56,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 895 transitions, 18161 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:56,284 INFO L231 Difference]: Finished difference. Result has 437 places, 843 transitions, 15481 flow [2024-06-27 22:10:56,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15048, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15481, PETRI_PLACES=437, PETRI_TRANSITIONS=843} [2024-06-27 22:10:56,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 22:10:56,285 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 843 transitions, 15481 flow [2024-06-27 22:10:56,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:56,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:56,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:56,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:10:56,286 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:56,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1610124876, now seen corresponding path program 5 times [2024-06-27 22:10:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920286295] [2024-06-27 22:10:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:56,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:57,623 INFO 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 22:10:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920286295] [2024-06-27 22:10:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920286295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597393217] [2024-06-27 22:10:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:57,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:57,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:10:57,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 843 transitions, 15481 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:57,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:57,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:10:57,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:58,696 INFO L124 PetriNetUnfolderBase]: 1553/2818 cut-off events. [2024-06-27 22:10:58,697 INFO L125 PetriNetUnfolderBase]: For 302556/302556 co-relation queries the response was YES. [2024-06-27 22:10:58,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27282 conditions, 2818 events. 1553/2818 cut-off events. For 302556/302556 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17423 event pairs, 223 based on Foata normal form. 3/2709 useless extension candidates. Maximal degree in co-relation 27111. Up to 1681 conditions per place. [2024-06-27 22:10:58,739 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 716 selfloop transitions, 177 changer transitions 0/901 dead transitions. [2024-06-27 22:10:58,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 901 transitions, 18647 flow [2024-06-27 22:10:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:10:58,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:10:58,740 INFO L175 Difference]: Start difference. First operand has 437 places, 843 transitions, 15481 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:10:58,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 901 transitions, 18647 flow [2024-06-27 22:11:00,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 901 transitions, 18423 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:00,335 INFO L231 Difference]: Finished difference. Result has 443 places, 847 transitions, 15712 flow [2024-06-27 22:11:00,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15262, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15712, PETRI_PLACES=443, PETRI_TRANSITIONS=847} [2024-06-27 22:11:00,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-27 22:11:00,336 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 847 transitions, 15712 flow [2024-06-27 22:11:00,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:00,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:00,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:11:00,336 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1826562319, now seen corresponding path program 3 times [2024-06-27 22:11:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51336590] [2024-06-27 22:11:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:01,861 INFO 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 22:11:01,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51336590] [2024-06-27 22:11:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51336590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633915901] [2024-06-27 22:11:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:01,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:01,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 847 transitions, 15712 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:01,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:01,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:01,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:03,099 INFO L124 PetriNetUnfolderBase]: 1547/2808 cut-off events. [2024-06-27 22:11:03,099 INFO L125 PetriNetUnfolderBase]: For 291678/291678 co-relation queries the response was YES. [2024-06-27 22:11:03,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27152 conditions, 2808 events. 1547/2808 cut-off events. For 291678/291678 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17363 event pairs, 211 based on Foata normal form. 2/2698 useless extension candidates. Maximal degree in co-relation 26979. Up to 1911 conditions per place. [2024-06-27 22:11:03,144 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 669 selfloop transitions, 210 changer transitions 0/887 dead transitions. [2024-06-27 22:11:03,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 887 transitions, 18388 flow [2024-06-27 22:11:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:11:03,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-27 22:11:03,146 INFO L175 Difference]: Start difference. First operand has 443 places, 847 transitions, 15712 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:11:03,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 887 transitions, 18388 flow [2024-06-27 22:11:04,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 887 transitions, 18069 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:11:04,773 INFO L231 Difference]: Finished difference. Result has 448 places, 847 transitions, 15822 flow [2024-06-27 22:11:04,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15393, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15822, PETRI_PLACES=448, PETRI_TRANSITIONS=847} [2024-06-27 22:11:04,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-27 22:11:04,774 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 847 transitions, 15822 flow [2024-06-27 22:11:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:04,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:04,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:04,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:11:04,775 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:04,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1610326903, now seen corresponding path program 4 times [2024-06-27 22:11:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:04,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413913846] [2024-06-27 22:11:04,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:06,362 INFO 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 22:11:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413913846] [2024-06-27 22:11:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413913846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807513604] [2024-06-27 22:11:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:06,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:06,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 847 transitions, 15822 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:06,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:06,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:07,581 INFO L124 PetriNetUnfolderBase]: 1543/2802 cut-off events. [2024-06-27 22:11:07,581 INFO L125 PetriNetUnfolderBase]: For 285082/285082 co-relation queries the response was YES. [2024-06-27 22:11:07,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26956 conditions, 2802 events. 1543/2802 cut-off events. For 285082/285082 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17335 event pairs, 209 based on Foata normal form. 2/2692 useless extension candidates. Maximal degree in co-relation 26782. Up to 1908 conditions per place. [2024-06-27 22:11:07,626 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 661 selfloop transitions, 215 changer transitions 0/884 dead transitions. [2024-06-27 22:11:07,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 884 transitions, 18226 flow [2024-06-27 22:11:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:11:07,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-27 22:11:07,628 INFO L175 Difference]: Start difference. First operand has 448 places, 847 transitions, 15822 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:11:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 884 transitions, 18226 flow [2024-06-27 22:11:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 884 transitions, 17882 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:11:09,353 INFO L231 Difference]: Finished difference. Result has 449 places, 847 transitions, 15917 flow [2024-06-27 22:11:09,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15478, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15917, PETRI_PLACES=449, PETRI_TRANSITIONS=847} [2024-06-27 22:11:09,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 22:11:09,353 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 847 transitions, 15917 flow [2024-06-27 22:11:09,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:09,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:09,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:09,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:11:09,354 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1610326686, now seen corresponding path program 6 times [2024-06-27 22:11:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371204474] [2024-06-27 22:11:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:10,693 INFO 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 22:11:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:10,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371204474] [2024-06-27 22:11:10,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371204474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:10,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:10,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791914744] [2024-06-27 22:11:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:10,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:10,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 847 transitions, 15917 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:10,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:10,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:11,851 INFO L124 PetriNetUnfolderBase]: 1537/2793 cut-off events. [2024-06-27 22:11:11,851 INFO L125 PetriNetUnfolderBase]: For 279335/279335 co-relation queries the response was YES. [2024-06-27 22:11:11,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26639 conditions, 2793 events. 1537/2793 cut-off events. For 279335/279335 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 17275 event pairs, 214 based on Foata normal form. 3/2684 useless extension candidates. Maximal degree in co-relation 26465. Up to 1672 conditions per place. [2024-06-27 22:11:11,895 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 690 selfloop transitions, 194 changer transitions 0/892 dead transitions. [2024-06-27 22:11:11,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 892 transitions, 18455 flow [2024-06-27 22:11:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:11:11,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-06-27 22:11:11,896 INFO L175 Difference]: Start difference. First operand has 449 places, 847 transitions, 15917 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:11:11,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 892 transitions, 18455 flow [2024-06-27 22:11:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 892 transitions, 17941 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 22:11:13,332 INFO L231 Difference]: Finished difference. Result has 448 places, 847 transitions, 15804 flow [2024-06-27 22:11:13,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15405, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15804, PETRI_PLACES=448, PETRI_TRANSITIONS=847} [2024-06-27 22:11:13,333 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-27 22:11:13,333 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 847 transitions, 15804 flow [2024-06-27 22:11:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:13,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:13,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:11:13,333 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:13,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1632628861, now seen corresponding path program 5 times [2024-06-27 22:11:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119859731] [2024-06-27 22:11:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:13,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:14,809 INFO 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 22:11:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119859731] [2024-06-27 22:11:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119859731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:14,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:14,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420776564] [2024-06-27 22:11:14,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:14,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:14,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 847 transitions, 15804 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:14,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:14,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:14,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:15,950 INFO L124 PetriNetUnfolderBase]: 1543/2804 cut-off events. [2024-06-27 22:11:15,951 INFO L125 PetriNetUnfolderBase]: For 271196/271196 co-relation queries the response was YES. [2024-06-27 22:11:15,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26691 conditions, 2804 events. 1543/2804 cut-off events. For 271196/271196 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 17342 event pairs, 215 based on Foata normal form. 1/2694 useless extension candidates. Maximal degree in co-relation 26516. Up to 2428 conditions per place. [2024-06-27 22:11:15,994 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 735 selfloop transitions, 125 changer transitions 0/868 dead transitions. [2024-06-27 22:11:15,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 868 transitions, 17880 flow [2024-06-27 22:11:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:11:15,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-27 22:11:15,996 INFO L175 Difference]: Start difference. First operand has 448 places, 847 transitions, 15804 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:11:15,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 868 transitions, 17880 flow [2024-06-27 22:11:17,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 868 transitions, 17520 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:17,641 INFO L231 Difference]: Finished difference. Result has 449 places, 849 transitions, 15743 flow [2024-06-27 22:11:17,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15444, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15743, PETRI_PLACES=449, PETRI_TRANSITIONS=849} [2024-06-27 22:11:17,642 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 22:11:17,642 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 849 transitions, 15743 flow [2024-06-27 22:11:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:17,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:17,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:11:17,643 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:17,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1632622909, now seen corresponding path program 5 times [2024-06-27 22:11:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:17,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11414842] [2024-06-27 22:11:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:19,209 INFO 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 22:11:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:19,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11414842] [2024-06-27 22:11:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11414842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727235899] [2024-06-27 22:11:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:19,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:19,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 849 transitions, 15743 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:19,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:19,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:19,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:20,451 INFO L124 PetriNetUnfolderBase]: 1569/2844 cut-off events. [2024-06-27 22:11:20,451 INFO L125 PetriNetUnfolderBase]: For 294773/294773 co-relation queries the response was YES. [2024-06-27 22:11:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27040 conditions, 2844 events. 1569/2844 cut-off events. For 294773/294773 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 17607 event pairs, 214 based on Foata normal form. 2/2733 useless extension candidates. Maximal degree in co-relation 26864. Up to 1931 conditions per place. [2024-06-27 22:11:20,496 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 684 selfloop transitions, 211 changer transitions 0/903 dead transitions. [2024-06-27 22:11:20,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 903 transitions, 18778 flow [2024-06-27 22:11:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:11:20,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-27 22:11:20,497 INFO L175 Difference]: Start difference. First operand has 449 places, 849 transitions, 15743 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:11:20,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 903 transitions, 18778 flow [2024-06-27 22:11:22,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 903 transitions, 18507 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:22,103 INFO L231 Difference]: Finished difference. Result has 452 places, 853 transitions, 15983 flow [2024-06-27 22:11:22,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15472, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15983, PETRI_PLACES=452, PETRI_TRANSITIONS=853} [2024-06-27 22:11:22,104 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-27 22:11:22,104 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 853 transitions, 15983 flow [2024-06-27 22:11:22,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:22,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:22,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:11:22,105 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:22,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1632421316, now seen corresponding path program 7 times [2024-06-27 22:11:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385288701] [2024-06-27 22:11:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:23,441 INFO 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 22:11:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385288701] [2024-06-27 22:11:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385288701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:23,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:23,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:23,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306892712] [2024-06-27 22:11:23,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:23,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:23,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:23,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:23,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 853 transitions, 15983 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:23,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:24,645 INFO L124 PetriNetUnfolderBase]: 1646/2964 cut-off events. [2024-06-27 22:11:24,645 INFO L125 PetriNetUnfolderBase]: For 358298/358298 co-relation queries the response was YES. [2024-06-27 22:11:24,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29030 conditions, 2964 events. 1646/2964 cut-off events. For 358298/358298 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 18379 event pairs, 215 based on Foata normal form. 3/2850 useless extension candidates. Maximal degree in co-relation 28853. Up to 1745 conditions per place. [2024-06-27 22:11:24,690 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 755 selfloop transitions, 172 changer transitions 0/935 dead transitions. [2024-06-27 22:11:24,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 935 transitions, 19930 flow [2024-06-27 22:11:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:11:24,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:11:24,691 INFO L175 Difference]: Start difference. First operand has 452 places, 853 transitions, 15983 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:11:24,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 935 transitions, 19930 flow [2024-06-27 22:11:26,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 935 transitions, 19623 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:11:26,714 INFO L231 Difference]: Finished difference. Result has 456 places, 861 transitions, 16205 flow [2024-06-27 22:11:26,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15679, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16205, PETRI_PLACES=456, PETRI_TRANSITIONS=861} [2024-06-27 22:11:26,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-27 22:11:26,715 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 861 transitions, 16205 flow [2024-06-27 22:11:26,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:26,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:26,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:26,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:11:26,716 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:26,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1632628706, now seen corresponding path program 8 times [2024-06-27 22:11:26,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:26,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192701574] [2024-06-27 22:11:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192701574] [2024-06-27 22:11:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192701574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573853403] [2024-06-27 22:11:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:28,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:28,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 861 transitions, 16205 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:28,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:28,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:28,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:29,375 INFO L124 PetriNetUnfolderBase]: 1662/2989 cut-off events. [2024-06-27 22:11:29,375 INFO L125 PetriNetUnfolderBase]: For 365657/365657 co-relation queries the response was YES. [2024-06-27 22:11:29,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29331 conditions, 2989 events. 1662/2989 cut-off events. For 365657/365657 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 18577 event pairs, 212 based on Foata normal form. 3/2874 useless extension candidates. Maximal degree in co-relation 29152. Up to 1758 conditions per place. [2024-06-27 22:11:29,422 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 716 selfloop transitions, 201 changer transitions 0/925 dead transitions. [2024-06-27 22:11:29,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 925 transitions, 19635 flow [2024-06-27 22:11:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:11:29,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:11:29,423 INFO L175 Difference]: Start difference. First operand has 456 places, 861 transitions, 16205 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:11:29,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 925 transitions, 19635 flow [2024-06-27 22:11:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 925 transitions, 19424 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:31,551 INFO L231 Difference]: Finished difference. Result has 462 places, 863 transitions, 16445 flow [2024-06-27 22:11:31,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15998, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16445, PETRI_PLACES=462, PETRI_TRANSITIONS=863} [2024-06-27 22:11:31,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-27 22:11:31,552 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 863 transitions, 16445 flow [2024-06-27 22:11:31,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:31,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:31,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:31,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:11:31,553 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:31,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1336489804, now seen corresponding path program 9 times [2024-06-27 22:11:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173129016] [2024-06-27 22:11:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:32,961 INFO 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 22:11:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173129016] [2024-06-27 22:11:32,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173129016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:32,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:32,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647276414] [2024-06-27 22:11:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:32,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:33,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:33,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 863 transitions, 16445 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:33,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:33,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:33,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:34,182 INFO L124 PetriNetUnfolderBase]: 1656/2980 cut-off events. [2024-06-27 22:11:34,182 INFO L125 PetriNetUnfolderBase]: For 354125/354125 co-relation queries the response was YES. [2024-06-27 22:11:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29047 conditions, 2980 events. 1656/2980 cut-off events. For 354125/354125 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 18516 event pairs, 214 based on Foata normal form. 3/2865 useless extension candidates. Maximal degree in co-relation 28867. Up to 1754 conditions per place. [2024-06-27 22:11:34,232 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 729 selfloop transitions, 189 changer transitions 0/926 dead transitions. [2024-06-27 22:11:34,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 926 transitions, 19644 flow [2024-06-27 22:11:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:11:34,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:11:34,233 INFO L175 Difference]: Start difference. First operand has 462 places, 863 transitions, 16445 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:11:34,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 926 transitions, 19644 flow [2024-06-27 22:11:36,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 926 transitions, 19310 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:11:36,323 INFO L231 Difference]: Finished difference. Result has 466 places, 863 transitions, 16499 flow [2024-06-27 22:11:36,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16111, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16499, PETRI_PLACES=466, PETRI_TRANSITIONS=863} [2024-06-27 22:11:36,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-27 22:11:36,324 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 863 transitions, 16499 flow [2024-06-27 22:11:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:36,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:36,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:36,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:11:36,325 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:36,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1336287777, now seen corresponding path program 6 times [2024-06-27 22:11:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:36,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140941841] [2024-06-27 22:11:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:36,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:37,996 INFO 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 22:11:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:37,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140941841] [2024-06-27 22:11:37,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140941841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:37,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:37,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:37,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168296538] [2024-06-27 22:11:37,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:37,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:37,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:37,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:37,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:38,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:38,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 863 transitions, 16499 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:38,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:38,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:38,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:39,299 INFO L124 PetriNetUnfolderBase]: 1667/2997 cut-off events. [2024-06-27 22:11:39,299 INFO L125 PetriNetUnfolderBase]: For 354638/354638 co-relation queries the response was YES. [2024-06-27 22:11:39,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29205 conditions, 2997 events. 1667/2997 cut-off events. For 354638/354638 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18622 event pairs, 211 based on Foata normal form. 2/2880 useless extension candidates. Maximal degree in co-relation 29024. Up to 2067 conditions per place. [2024-06-27 22:11:39,346 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 719 selfloop transitions, 200 changer transitions 0/927 dead transitions. [2024-06-27 22:11:39,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 927 transitions, 19962 flow [2024-06-27 22:11:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:11:39,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:11:39,348 INFO L175 Difference]: Start difference. First operand has 466 places, 863 transitions, 16499 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:11:39,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 927 transitions, 19962 flow [2024-06-27 22:11:41,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 927 transitions, 19607 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:41,391 INFO L231 Difference]: Finished difference. Result has 469 places, 865 transitions, 16602 flow [2024-06-27 22:11:41,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16145, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16602, PETRI_PLACES=469, PETRI_TRANSITIONS=865} [2024-06-27 22:11:41,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-06-27 22:11:41,392 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 865 transitions, 16602 flow [2024-06-27 22:11:41,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:41,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:41,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:11:41,393 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:41,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1336280337, now seen corresponding path program 7 times [2024-06-27 22:11:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949356419] [2024-06-27 22:11:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:43,016 INFO 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 22:11:43,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:43,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949356419] [2024-06-27 22:11:43,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949356419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:43,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:43,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:43,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104587807] [2024-06-27 22:11:43,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:43,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:43,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:43,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 865 transitions, 16602 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:43,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:43,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:43,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:44,426 INFO L124 PetriNetUnfolderBase]: 1661/2987 cut-off events. [2024-06-27 22:11:44,427 INFO L125 PetriNetUnfolderBase]: For 346664/346664 co-relation queries the response was YES. [2024-06-27 22:11:44,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28969 conditions, 2987 events. 1661/2987 cut-off events. For 346664/346664 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18572 event pairs, 210 based on Foata normal form. 2/2870 useless extension candidates. Maximal degree in co-relation 28787. Up to 2060 conditions per place. [2024-06-27 22:11:44,474 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 710 selfloop transitions, 205 changer transitions 0/923 dead transitions. [2024-06-27 22:11:44,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 923 transitions, 19737 flow [2024-06-27 22:11:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:11:44,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-06-27 22:11:44,476 INFO L175 Difference]: Start difference. First operand has 469 places, 865 transitions, 16602 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:11:44,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 923 transitions, 19737 flow [2024-06-27 22:11:46,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 923 transitions, 19334 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:46,287 INFO L231 Difference]: Finished difference. Result has 471 places, 865 transitions, 16622 flow [2024-06-27 22:11:46,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16199, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16622, PETRI_PLACES=471, PETRI_TRANSITIONS=865} [2024-06-27 22:11:46,288 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 429 predicate places. [2024-06-27 22:11:46,288 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 865 transitions, 16622 flow [2024-06-27 22:11:46,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:46,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:46,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:46,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:11:46,289 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:46,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1329130497, now seen corresponding path program 8 times [2024-06-27 22:11:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311154258] [2024-06-27 22:11:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:47,779 INFO 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 22:11:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311154258] [2024-06-27 22:11:47,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311154258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:47,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:47,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:47,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100369200] [2024-06-27 22:11:47,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:47,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:47,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:47,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:47,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 865 transitions, 16622 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:47,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:47,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:47,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:49,093 INFO L124 PetriNetUnfolderBase]: 1706/3059 cut-off events. [2024-06-27 22:11:49,093 INFO L125 PetriNetUnfolderBase]: For 367390/367390 co-relation queries the response was YES. [2024-06-27 22:11:49,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29845 conditions, 3059 events. 1706/3059 cut-off events. For 367390/367390 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 19044 event pairs, 211 based on Foata normal form. 2/2937 useless extension candidates. Maximal degree in co-relation 29663. Up to 2093 conditions per place. [2024-06-27 22:11:49,145 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 706 selfloop transitions, 222 changer transitions 0/936 dead transitions. [2024-06-27 22:11:49,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 936 transitions, 20232 flow [2024-06-27 22:11:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:11:49,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-06-27 22:11:49,147 INFO L175 Difference]: Start difference. First operand has 471 places, 865 transitions, 16622 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:11:49,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 936 transitions, 20232 flow [2024-06-27 22:11:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 936 transitions, 19788 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:11:51,319 INFO L231 Difference]: Finished difference. Result has 473 places, 880 transitions, 17008 flow [2024-06-27 22:11:51,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16194, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17008, PETRI_PLACES=473, PETRI_TRANSITIONS=880} [2024-06-27 22:11:51,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 431 predicate places. [2024-06-27 22:11:51,320 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 880 transitions, 17008 flow [2024-06-27 22:11:51,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:51,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:51,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:51,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:11:51,320 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:51,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1329137937, now seen corresponding path program 9 times [2024-06-27 22:11:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348516972] [2024-06-27 22:11:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:53,012 INFO 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 22:11:53,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348516972] [2024-06-27 22:11:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348516972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:53,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:53,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049188924] [2024-06-27 22:11:53,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:53,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:53,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:53,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:53,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 880 transitions, 17008 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:53,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:53,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:53,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:54,427 INFO L124 PetriNetUnfolderBase]: 1702/3053 cut-off events. [2024-06-27 22:11:54,427 INFO L125 PetriNetUnfolderBase]: For 358665/358665 co-relation queries the response was YES. [2024-06-27 22:11:54,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29669 conditions, 3053 events. 1702/3053 cut-off events. For 358665/358665 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 18990 event pairs, 210 based on Foata normal form. 2/2931 useless extension candidates. Maximal degree in co-relation 29485. Up to 2090 conditions per place. [2024-06-27 22:11:54,477 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 689 selfloop transitions, 231 changer transitions 0/928 dead transitions. [2024-06-27 22:11:54,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 928 transitions, 19947 flow [2024-06-27 22:11:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:11:54,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 22:11:54,479 INFO L175 Difference]: Start difference. First operand has 473 places, 880 transitions, 17008 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:11:54,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 928 transitions, 19947 flow [2024-06-27 22:11:56,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 928 transitions, 19474 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:56,727 INFO L231 Difference]: Finished difference. Result has 476 places, 880 transitions, 17006 flow [2024-06-27 22:11:56,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16535, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17006, PETRI_PLACES=476, PETRI_TRANSITIONS=880} [2024-06-27 22:11:56,728 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-06-27 22:11:56,728 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 880 transitions, 17006 flow [2024-06-27 22:11:56,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:56,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:56,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:11:56,729 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:56,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1329138154, now seen corresponding path program 10 times [2024-06-27 22:11:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169732521] [2024-06-27 22:11:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169732521] [2024-06-27 22:11:58,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169732521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:58,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:58,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280146555] [2024-06-27 22:11:58,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:58,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:11:58,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 880 transitions, 17006 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:58,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:58,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:11:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:59,315 INFO L124 PetriNetUnfolderBase]: 1698/3048 cut-off events. [2024-06-27 22:11:59,315 INFO L125 PetriNetUnfolderBase]: For 349371/349371 co-relation queries the response was YES. [2024-06-27 22:11:59,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 3048 events. 1698/3048 cut-off events. For 349371/349371 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 18997 event pairs, 216 based on Foata normal form. 3/2927 useless extension candidates. Maximal degree in co-relation 29094. Up to 1771 conditions per place. [2024-06-27 22:11:59,366 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 706 selfloop transitions, 222 changer transitions 0/936 dead transitions. [2024-06-27 22:11:59,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 936 transitions, 20082 flow [2024-06-27 22:11:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:11:59,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:11:59,368 INFO L175 Difference]: Start difference. First operand has 476 places, 880 transitions, 17006 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:11:59,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 936 transitions, 20082 flow [2024-06-27 22:12:01,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 936 transitions, 19619 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:01,410 INFO L231 Difference]: Finished difference. Result has 478 places, 880 transitions, 17001 flow [2024-06-27 22:12:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16545, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17001, PETRI_PLACES=478, PETRI_TRANSITIONS=880} [2024-06-27 22:12:01,411 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 22:12:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 880 transitions, 17001 flow [2024-06-27 22:12:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:01,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:01,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:12:01,412 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1328871027, now seen corresponding path program 10 times [2024-06-27 22:12:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654012247] [2024-06-27 22:12:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:02,938 INFO 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 22:12:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654012247] [2024-06-27 22:12:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654012247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:02,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228185996] [2024-06-27 22:12:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:02,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:03,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:03,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 880 transitions, 17001 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:03,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:03,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:04,458 INFO L124 PetriNetUnfolderBase]: 1692/3038 cut-off events. [2024-06-27 22:12:04,458 INFO L125 PetriNetUnfolderBase]: For 333052/333052 co-relation queries the response was YES. [2024-06-27 22:12:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29025 conditions, 3038 events. 1692/3038 cut-off events. For 333052/333052 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 18920 event pairs, 211 based on Foata normal form. 2/2916 useless extension candidates. Maximal degree in co-relation 28839. Up to 2078 conditions per place. [2024-06-27 22:12:04,508 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 660 selfloop transitions, 255 changer transitions 0/923 dead transitions. [2024-06-27 22:12:04,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 923 transitions, 19624 flow [2024-06-27 22:12:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:12:04,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-27 22:12:04,510 INFO L175 Difference]: Start difference. First operand has 478 places, 880 transitions, 17001 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:12:04,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 923 transitions, 19624 flow [2024-06-27 22:12:06,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 923 transitions, 19025 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 22:12:06,402 INFO L231 Difference]: Finished difference. Result has 478 places, 880 transitions, 16925 flow [2024-06-27 22:12:06,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16402, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16925, PETRI_PLACES=478, PETRI_TRANSITIONS=880} [2024-06-27 22:12:06,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 22:12:06,404 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 880 transitions, 16925 flow [2024-06-27 22:12:06,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:06,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:06,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:06,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:12:06,405 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:06,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1328861107, now seen corresponding path program 1 times [2024-06-27 22:12:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117913791] [2024-06-27 22:12:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:08,079 INFO 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 22:12:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117913791] [2024-06-27 22:12:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117913791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573835091] [2024-06-27 22:12:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:08,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:08,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:08,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 880 transitions, 16925 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:08,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:08,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:08,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:09,523 INFO L124 PetriNetUnfolderBase]: 1663/3023 cut-off events. [2024-06-27 22:12:09,523 INFO L125 PetriNetUnfolderBase]: For 347762/347779 co-relation queries the response was YES. [2024-06-27 22:12:09,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28590 conditions, 3023 events. 1663/3023 cut-off events. For 347762/347779 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 19150 event pairs, 206 based on Foata normal form. 13/2902 useless extension candidates. Maximal degree in co-relation 28403. Up to 2409 conditions per place. [2024-06-27 22:12:09,568 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 680 selfloop transitions, 63 changer transitions 0/904 dead transitions. [2024-06-27 22:12:09,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 904 transitions, 18663 flow [2024-06-27 22:12:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:12:09,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:12:09,569 INFO L175 Difference]: Start difference. First operand has 478 places, 880 transitions, 16925 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:12:09,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 904 transitions, 18663 flow [2024-06-27 22:12:11,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 904 transitions, 18147 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 22:12:11,882 INFO L231 Difference]: Finished difference. Result has 478 places, 881 transitions, 16562 flow [2024-06-27 22:12:11,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16409, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=817, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16562, PETRI_PLACES=478, PETRI_TRANSITIONS=881} [2024-06-27 22:12:11,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 22:12:11,883 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 881 transitions, 16562 flow [2024-06-27 22:12:11,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:11,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:11,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:11,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:12:11,884 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:11,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:11,884 INFO L85 PathProgramCache]: Analyzing trace with hash 915419634, now seen corresponding path program 11 times [2024-06-27 22:12:11,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:11,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678301163] [2024-06-27 22:12:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:11,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:13,060 INFO 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 22:12:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678301163] [2024-06-27 22:12:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678301163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:13,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409145614] [2024-06-27 22:12:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:13,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:13,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:13,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 881 transitions, 16562 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:13,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:13,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:14,469 INFO L124 PetriNetUnfolderBase]: 1725/3100 cut-off events. [2024-06-27 22:12:14,469 INFO L125 PetriNetUnfolderBase]: For 347856/347856 co-relation queries the response was YES. [2024-06-27 22:12:14,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28959 conditions, 3100 events. 1725/3100 cut-off events. For 347856/347856 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 19417 event pairs, 217 based on Foata normal form. 3/2974 useless extension candidates. Maximal degree in co-relation 28772. Up to 2739 conditions per place. [2024-06-27 22:12:14,513 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 852 selfloop transitions, 52 changer transitions 0/912 dead transitions. [2024-06-27 22:12:14,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 912 transitions, 18744 flow [2024-06-27 22:12:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:12:14,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-27 22:12:14,514 INFO L175 Difference]: Start difference. First operand has 478 places, 881 transitions, 16562 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:12:14,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 912 transitions, 18744 flow [2024-06-27 22:12:16,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 912 transitions, 18345 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-27 22:12:16,461 INFO L231 Difference]: Finished difference. Result has 476 places, 883 transitions, 16324 flow [2024-06-27 22:12:16,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16167, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16324, PETRI_PLACES=476, PETRI_TRANSITIONS=883} [2024-06-27 22:12:16,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-06-27 22:12:16,462 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 883 transitions, 16324 flow [2024-06-27 22:12:16,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:16,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:16,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:12:16,463 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:16,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:16,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2127802813, now seen corresponding path program 11 times [2024-06-27 22:12:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:16,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841753620] [2024-06-27 22:12:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:16,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:17,862 INFO 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 22:12:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841753620] [2024-06-27 22:12:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841753620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486057836] [2024-06-27 22:12:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:17,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:17,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:17,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 883 transitions, 16324 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:17,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:17,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:17,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:19,278 INFO L124 PetriNetUnfolderBase]: 1727/3104 cut-off events. [2024-06-27 22:12:19,278 INFO L125 PetriNetUnfolderBase]: For 335742/335742 co-relation queries the response was YES. [2024-06-27 22:12:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28367 conditions, 3104 events. 1727/3104 cut-off events. For 335742/335742 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 19424 event pairs, 219 based on Foata normal form. 3/2978 useless extension candidates. Maximal degree in co-relation 28180. Up to 2791 conditions per place. [2024-06-27 22:12:19,324 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 860 selfloop transitions, 39 changer transitions 0/907 dead transitions. [2024-06-27 22:12:19,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 907 transitions, 18407 flow [2024-06-27 22:12:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 22:12:19,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-06-27 22:12:19,325 INFO L175 Difference]: Start difference. First operand has 476 places, 883 transitions, 16324 flow. Second operand 11 states and 161 transitions. [2024-06-27 22:12:19,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 907 transitions, 18407 flow [2024-06-27 22:12:21,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 907 transitions, 18292 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:21,527 INFO L231 Difference]: Finished difference. Result has 479 places, 886 transitions, 16366 flow [2024-06-27 22:12:21,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16209, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16366, PETRI_PLACES=479, PETRI_TRANSITIONS=886} [2024-06-27 22:12:21,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-27 22:12:21,528 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 886 transitions, 16366 flow [2024-06-27 22:12:21,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:21,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:21,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:21,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:12:21,528 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:21,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash 718456588, now seen corresponding path program 12 times [2024-06-27 22:12:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:21,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671244824] [2024-06-27 22:12:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:22,836 INFO 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 22:12:22,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671244824] [2024-06-27 22:12:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671244824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:22,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:22,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016623609] [2024-06-27 22:12:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:22,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:22,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 886 transitions, 16366 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:22,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:22,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:22,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:24,220 INFO L124 PetriNetUnfolderBase]: 1760/3156 cut-off events. [2024-06-27 22:12:24,220 INFO L125 PetriNetUnfolderBase]: For 357046/357046 co-relation queries the response was YES. [2024-06-27 22:12:24,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29047 conditions, 3156 events. 1760/3156 cut-off events. For 357046/357046 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 19773 event pairs, 217 based on Foata normal form. 3/3028 useless extension candidates. Maximal degree in co-relation 28859. Up to 2528 conditions per place. [2024-06-27 22:12:24,266 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 850 selfloop transitions, 89 changer transitions 0/947 dead transitions. [2024-06-27 22:12:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 947 transitions, 19629 flow [2024-06-27 22:12:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:12:24,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 22:12:24,267 INFO L175 Difference]: Start difference. First operand has 479 places, 886 transitions, 16366 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:12:24,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 947 transitions, 19629 flow [2024-06-27 22:12:26,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 947 transitions, 19513 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:26,552 INFO L231 Difference]: Finished difference. Result has 481 places, 890 transitions, 16552 flow [2024-06-27 22:12:26,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16250, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16552, PETRI_PLACES=481, PETRI_TRANSITIONS=890} [2024-06-27 22:12:26,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-27 22:12:26,553 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 890 transitions, 16552 flow [2024-06-27 22:12:26,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:26,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:26,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:26,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:12:26,553 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:26,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2115857273, now seen corresponding path program 2 times [2024-06-27 22:12:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986476895] [2024-06-27 22:12:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:28,154 INFO 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 22:12:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986476895] [2024-06-27 22:12:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986476895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110464423] [2024-06-27 22:12:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:28,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:28,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 890 transitions, 16552 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:28,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:28,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:28,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:29,588 INFO L124 PetriNetUnfolderBase]: 1777/3196 cut-off events. [2024-06-27 22:12:29,588 INFO L125 PetriNetUnfolderBase]: For 355938/355938 co-relation queries the response was YES. [2024-06-27 22:12:29,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29402 conditions, 3196 events. 1777/3196 cut-off events. For 355938/355938 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 20107 event pairs, 227 based on Foata normal form. 2/3064 useless extension candidates. Maximal degree in co-relation 29212. Up to 2891 conditions per place. [2024-06-27 22:12:29,637 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 880 selfloop transitions, 23 changer transitions 0/911 dead transitions. [2024-06-27 22:12:29,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 911 transitions, 18573 flow [2024-06-27 22:12:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 22:12:29,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093567251461988 [2024-06-27 22:12:29,638 INFO L175 Difference]: Start difference. First operand has 481 places, 890 transitions, 16552 flow. Second operand 9 states and 140 transitions. [2024-06-27 22:12:29,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 911 transitions, 18573 flow [2024-06-27 22:12:32,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 911 transitions, 18306 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:32,092 INFO L231 Difference]: Finished difference. Result has 482 places, 891 transitions, 16360 flow [2024-06-27 22:12:32,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16285, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=890, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16360, PETRI_PLACES=482, PETRI_TRANSITIONS=891} [2024-06-27 22:12:32,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 440 predicate places. [2024-06-27 22:12:32,093 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 891 transitions, 16360 flow [2024-06-27 22:12:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:32,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:32,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:32,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:12:32,093 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:32,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1825769543, now seen corresponding path program 3 times [2024-06-27 22:12:32,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:32,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639553636] [2024-06-27 22:12:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:32,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:33,786 INFO 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 22:12:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639553636] [2024-06-27 22:12:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639553636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913679009] [2024-06-27 22:12:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:33,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:33,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:33,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 891 transitions, 16360 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:33,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:33,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:33,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:35,256 INFO L124 PetriNetUnfolderBase]: 1747/3184 cut-off events. [2024-06-27 22:12:35,256 INFO L125 PetriNetUnfolderBase]: For 363601/363609 co-relation queries the response was YES. [2024-06-27 22:12:35,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28999 conditions, 3184 events. 1747/3184 cut-off events. For 363601/363609 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 20414 event pairs, 224 based on Foata normal form. 6/3049 useless extension candidates. Maximal degree in co-relation 28808. Up to 2609 conditions per place. [2024-06-27 22:12:35,310 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 724 selfloop transitions, 30 changer transitions 0/915 dead transitions. [2024-06-27 22:12:35,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 915 transitions, 18122 flow [2024-06-27 22:12:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:12:35,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 22:12:35,311 INFO L175 Difference]: Start difference. First operand has 482 places, 891 transitions, 16360 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:12:35,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 915 transitions, 18122 flow [2024-06-27 22:12:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 915 transitions, 18065 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:37,675 INFO L231 Difference]: Finished difference. Result has 485 places, 892 transitions, 16393 flow [2024-06-27 22:12:37,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16303, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16393, PETRI_PLACES=485, PETRI_TRANSITIONS=892} [2024-06-27 22:12:37,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-27 22:12:37,676 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 892 transitions, 16393 flow [2024-06-27 22:12:37,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:37,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:37,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:37,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:12:37,677 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:37,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2115442493, now seen corresponding path program 4 times [2024-06-27 22:12:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662381737] [2024-06-27 22:12:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:39,384 INFO 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 22:12:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662381737] [2024-06-27 22:12:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662381737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735627796] [2024-06-27 22:12:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:39,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:39,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 892 transitions, 16393 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:39,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:39,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:39,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:40,780 INFO L124 PetriNetUnfolderBase]: 1764/3216 cut-off events. [2024-06-27 22:12:40,780 INFO L125 PetriNetUnfolderBase]: For 369057/369065 co-relation queries the response was YES. [2024-06-27 22:12:40,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29235 conditions, 3216 events. 1764/3216 cut-off events. For 369057/369065 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 20627 event pairs, 217 based on Foata normal form. 6/3080 useless extension candidates. Maximal degree in co-relation 29043. Up to 2646 conditions per place. [2024-06-27 22:12:40,834 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 738 selfloop transitions, 16 changer transitions 0/915 dead transitions. [2024-06-27 22:12:40,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 915 transitions, 18121 flow [2024-06-27 22:12:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:12:40,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-27 22:12:40,835 INFO L175 Difference]: Start difference. First operand has 485 places, 892 transitions, 16393 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:12:40,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 915 transitions, 18121 flow [2024-06-27 22:12:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 915 transitions, 18018 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:43,375 INFO L231 Difference]: Finished difference. Result has 487 places, 895 transitions, 16381 flow [2024-06-27 22:12:43,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16290, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=892, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16381, PETRI_PLACES=487, PETRI_TRANSITIONS=895} [2024-06-27 22:12:43,376 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 22:12:43,376 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 895 transitions, 16381 flow [2024-06-27 22:12:43,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:43,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:43,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:43,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:12:43,377 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash 718456805, now seen corresponding path program 12 times [2024-06-27 22:12:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:43,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738394606] [2024-06-27 22:12:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:44,928 INFO 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 22:12:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738394606] [2024-06-27 22:12:44,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738394606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514847509] [2024-06-27 22:12:44,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:44,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:45,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:45,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 895 transitions, 16381 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:45,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:45,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:45,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:46,358 INFO L124 PetriNetUnfolderBase]: 1822/3292 cut-off events. [2024-06-27 22:12:46,358 INFO L125 PetriNetUnfolderBase]: For 368250/368250 co-relation queries the response was YES. [2024-06-27 22:12:46,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29866 conditions, 3292 events. 1822/3292 cut-off events. For 368250/368250 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 20921 event pairs, 229 based on Foata normal form. 2/3154 useless extension candidates. Maximal degree in co-relation 29672. Up to 2681 conditions per place. [2024-06-27 22:12:46,413 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 833 selfloop transitions, 109 changer transitions 0/950 dead transitions. [2024-06-27 22:12:46,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 950 transitions, 19581 flow [2024-06-27 22:12:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:12:46,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-27 22:12:46,414 INFO L175 Difference]: Start difference. First operand has 487 places, 895 transitions, 16381 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:12:46,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 950 transitions, 19581 flow [2024-06-27 22:12:49,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 950 transitions, 19518 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:49,040 INFO L231 Difference]: Finished difference. Result has 491 places, 897 transitions, 16592 flow [2024-06-27 22:12:49,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16318, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16592, PETRI_PLACES=491, PETRI_TRANSITIONS=897} [2024-06-27 22:12:49,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-27 22:12:49,041 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 897 transitions, 16592 flow [2024-06-27 22:12:49,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:49,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:49,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:49,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:12:49,042 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 718464245, now seen corresponding path program 13 times [2024-06-27 22:12:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954659388] [2024-06-27 22:12:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:50,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:50,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954659388] [2024-06-27 22:12:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954659388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:50,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:50,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146252553] [2024-06-27 22:12:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:50,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:50,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:50,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:50,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 897 transitions, 16592 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:50,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:50,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:50,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:51,905 INFO L124 PetriNetUnfolderBase]: 1833/3309 cut-off events. [2024-06-27 22:12:51,906 INFO L125 PetriNetUnfolderBase]: For 374374/374374 co-relation queries the response was YES. [2024-06-27 22:12:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30125 conditions, 3309 events. 1833/3309 cut-off events. For 374374/374374 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 21035 event pairs, 229 based on Foata normal form. 2/3170 useless extension candidates. Maximal degree in co-relation 29930. Up to 2691 conditions per place. [2024-06-27 22:12:51,962 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 847 selfloop transitions, 104 changer transitions 0/959 dead transitions. [2024-06-27 22:12:51,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 959 transitions, 19909 flow [2024-06-27 22:12:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:12:51,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 22:12:51,967 INFO L175 Difference]: Start difference. First operand has 491 places, 897 transitions, 16592 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:12:51,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 959 transitions, 19909 flow [2024-06-27 22:12:54,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 959 transitions, 19638 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:54,682 INFO L231 Difference]: Finished difference. Result has 492 places, 899 transitions, 16592 flow [2024-06-27 22:12:54,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16329, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=795, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16592, PETRI_PLACES=492, PETRI_TRANSITIONS=899} [2024-06-27 22:12:54,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-27 22:12:54,684 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 899 transitions, 16592 flow [2024-06-27 22:12:54,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:54,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:54,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:12:54,686 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:54,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 718723715, now seen corresponding path program 14 times [2024-06-27 22:12:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326152775] [2024-06-27 22:12:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:56,289 INFO 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 22:12:56,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:56,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326152775] [2024-06-27 22:12:56,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326152775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:56,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:56,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23974964] [2024-06-27 22:12:56,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:56,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:56,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:56,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:56,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:56,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:12:56,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 899 transitions, 16592 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:56,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:56,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:12:56,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:57,873 INFO L124 PetriNetUnfolderBase]: 1827/3291 cut-off events. [2024-06-27 22:12:57,873 INFO L125 PetriNetUnfolderBase]: For 361898/361898 co-relation queries the response was YES. [2024-06-27 22:12:57,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29754 conditions, 3291 events. 1827/3291 cut-off events. For 361898/361898 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 20842 event pairs, 232 based on Foata normal form. 2/3154 useless extension candidates. Maximal degree in co-relation 29559. Up to 2684 conditions per place. [2024-06-27 22:12:57,927 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 824 selfloop transitions, 115 changer transitions 0/947 dead transitions. [2024-06-27 22:12:57,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 947 transitions, 19412 flow [2024-06-27 22:12:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:12:57,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-06-27 22:12:57,929 INFO L175 Difference]: Start difference. First operand has 492 places, 899 transitions, 16592 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:12:57,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 947 transitions, 19412 flow [2024-06-27 22:13:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 947 transitions, 19204 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:00,691 INFO L231 Difference]: Finished difference. Result has 495 places, 899 transitions, 16625 flow [2024-06-27 22:13:00,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16384, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16625, PETRI_PLACES=495, PETRI_TRANSITIONS=899} [2024-06-27 22:13:00,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-27 22:13:00,692 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 899 transitions, 16625 flow [2024-06-27 22:13:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:00,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:00,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:13:00,693 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:00,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash 711314405, now seen corresponding path program 15 times [2024-06-27 22:13:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406729979] [2024-06-27 22:13:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:02,102 INFO 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 22:13:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406729979] [2024-06-27 22:13:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406729979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:02,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:02,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192313150] [2024-06-27 22:13:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:02,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:02,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 899 transitions, 16625 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:02,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:02,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:03,716 INFO L124 PetriNetUnfolderBase]: 1838/3314 cut-off events. [2024-06-27 22:13:03,717 INFO L125 PetriNetUnfolderBase]: For 366482/366482 co-relation queries the response was YES. [2024-06-27 22:13:03,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29911 conditions, 3314 events. 1838/3314 cut-off events. For 366482/366482 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 21014 event pairs, 230 based on Foata normal form. 2/3172 useless extension candidates. Maximal degree in co-relation 29715. Up to 2694 conditions per place. [2024-06-27 22:13:03,763 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 813 selfloop transitions, 120 changer transitions 0/941 dead transitions. [2024-06-27 22:13:03,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 941 transitions, 19368 flow [2024-06-27 22:13:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:13:03,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 22:13:03,765 INFO L175 Difference]: Start difference. First operand has 495 places, 899 transitions, 16625 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:13:03,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 941 transitions, 19368 flow [2024-06-27 22:13:06,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 941 transitions, 19122 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:06,265 INFO L231 Difference]: Finished difference. Result has 496 places, 901 transitions, 16677 flow [2024-06-27 22:13:06,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16385, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16677, PETRI_PLACES=496, PETRI_TRANSITIONS=901} [2024-06-27 22:13:06,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-27 22:13:06,265 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 901 transitions, 16677 flow [2024-06-27 22:13:06,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:06,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:06,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:13:06,266 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:06,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash 718733635, now seen corresponding path program 5 times [2024-06-27 22:13:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124666139] [2024-06-27 22:13:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:08,033 INFO 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 22:13:08,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124666139] [2024-06-27 22:13:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124666139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:08,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276671572] [2024-06-27 22:13:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:08,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:08,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 901 transitions, 16677 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:08,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:08,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:08,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:09,541 INFO L124 PetriNetUnfolderBase]: 1804/3293 cut-off events. [2024-06-27 22:13:09,542 INFO L125 PetriNetUnfolderBase]: For 379568/379576 co-relation queries the response was YES. [2024-06-27 22:13:09,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29693 conditions, 3293 events. 1804/3293 cut-off events. For 379568/379576 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 21253 event pairs, 232 based on Foata normal form. 6/3151 useless extension candidates. Maximal degree in co-relation 29496. Up to 2685 conditions per place. [2024-06-27 22:13:09,595 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 725 selfloop transitions, 42 changer transitions 0/928 dead transitions. [2024-06-27 22:13:09,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 928 transitions, 18539 flow [2024-06-27 22:13:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:13:09,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 22:13:09,596 INFO L175 Difference]: Start difference. First operand has 496 places, 901 transitions, 16677 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:13:09,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 928 transitions, 18539 flow [2024-06-27 22:13:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 928 transitions, 18012 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:13:12,271 INFO L231 Difference]: Finished difference. Result has 496 places, 902 transitions, 16268 flow [2024-06-27 22:13:12,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16150, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=859, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16268, PETRI_PLACES=496, PETRI_TRANSITIONS=902} [2024-06-27 22:13:12,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-27 22:13:12,272 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 902 transitions, 16268 flow [2024-06-27 22:13:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:12,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:12,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:12,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:13:12,273 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:12,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:12,273 INFO L85 PathProgramCache]: Analyzing trace with hash 711306965, now seen corresponding path program 16 times [2024-06-27 22:13:12,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:12,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552983662] [2024-06-27 22:13:12,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:12,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:13,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552983662] [2024-06-27 22:13:13,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552983662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:13,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:13,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:13,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103828059] [2024-06-27 22:13:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:13,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:13,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 902 transitions, 16268 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:13,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:13,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:13,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:15,349 INFO L124 PetriNetUnfolderBase]: 1866/3364 cut-off events. [2024-06-27 22:13:15,349 INFO L125 PetriNetUnfolderBase]: For 374559/374559 co-relation queries the response was YES. [2024-06-27 22:13:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30070 conditions, 3364 events. 1866/3364 cut-off events. For 374559/374559 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 21417 event pairs, 237 based on Foata normal form. 2/3221 useless extension candidates. Maximal degree in co-relation 29872. Up to 2735 conditions per place. [2024-06-27 22:13:15,404 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 821 selfloop transitions, 118 changer transitions 0/947 dead transitions. [2024-06-27 22:13:15,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 947 transitions, 19060 flow [2024-06-27 22:13:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:13:15,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-27 22:13:15,405 INFO L175 Difference]: Start difference. First operand has 496 places, 902 transitions, 16268 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:13:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 947 transitions, 19060 flow [2024-06-27 22:13:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 947 transitions, 18898 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 22:13:18,034 INFO L231 Difference]: Finished difference. Result has 497 places, 904 transitions, 16385 flow [2024-06-27 22:13:18,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16106, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16385, PETRI_PLACES=497, PETRI_TRANSITIONS=904} [2024-06-27 22:13:18,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-27 22:13:18,035 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 904 transitions, 16385 flow [2024-06-27 22:13:18,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:18,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:18,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:18,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:13:18,036 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:18,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash 711306748, now seen corresponding path program 13 times [2024-06-27 22:13:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274715980] [2024-06-27 22:13:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:19,258 INFO 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 22:13:19,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:19,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274715980] [2024-06-27 22:13:19,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274715980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:19,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:19,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:19,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550274519] [2024-06-27 22:13:19,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:19,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:19,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:19,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:19,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:19,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 904 transitions, 16385 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:19,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:19,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:19,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:20,608 INFO L124 PetriNetUnfolderBase]: 1882/3389 cut-off events. [2024-06-27 22:13:20,608 INFO L125 PetriNetUnfolderBase]: For 388699/388699 co-relation queries the response was YES. [2024-06-27 22:13:20,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30305 conditions, 3389 events. 1882/3389 cut-off events. For 388699/388699 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 21543 event pairs, 238 based on Foata normal form. 3/3246 useless extension candidates. Maximal degree in co-relation 30106. Up to 2677 conditions per place. [2024-06-27 22:13:20,663 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 850 selfloop transitions, 95 changer transitions 0/953 dead transitions. [2024-06-27 22:13:20,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 953 transitions, 19239 flow [2024-06-27 22:13:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:13:20,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:13:20,664 INFO L175 Difference]: Start difference. First operand has 497 places, 904 transitions, 16385 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:13:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 953 transitions, 19239 flow [2024-06-27 22:13:23,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 953 transitions, 19022 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:23,507 INFO L231 Difference]: Finished difference. Result has 499 places, 906 transitions, 16408 flow [2024-06-27 22:13:23,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16168, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16408, PETRI_PLACES=499, PETRI_TRANSITIONS=906} [2024-06-27 22:13:23,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-27 22:13:23,508 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 906 transitions, 16408 flow [2024-06-27 22:13:23,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:23,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:23,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:23,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:13:23,508 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:23,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash 711104938, now seen corresponding path program 14 times [2024-06-27 22:13:23,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:23,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196761166] [2024-06-27 22:13:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:23,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:24,725 INFO 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 22:13:24,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:24,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196761166] [2024-06-27 22:13:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196761166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458660713] [2024-06-27 22:13:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:24,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:24,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 906 transitions, 16408 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:24,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:24,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:24,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:26,110 INFO L124 PetriNetUnfolderBase]: 1900/3417 cut-off events. [2024-06-27 22:13:26,111 INFO L125 PetriNetUnfolderBase]: For 394718/394718 co-relation queries the response was YES. [2024-06-27 22:13:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30525 conditions, 3417 events. 1900/3417 cut-off events. For 394718/394718 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 21766 event pairs, 242 based on Foata normal form. 3/3272 useless extension candidates. Maximal degree in co-relation 30325. Up to 2693 conditions per place. [2024-06-27 22:13:26,168 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 808 selfloop transitions, 130 changer transitions 0/946 dead transitions. [2024-06-27 22:13:26,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 946 transitions, 19117 flow [2024-06-27 22:13:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:13:26,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:13:26,169 INFO L175 Difference]: Start difference. First operand has 499 places, 906 transitions, 16408 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:13:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 946 transitions, 19117 flow [2024-06-27 22:13:29,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 946 transitions, 18666 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:13:29,234 INFO L231 Difference]: Finished difference. Result has 499 places, 908 transitions, 16270 flow [2024-06-27 22:13:29,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15965, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16270, PETRI_PLACES=499, PETRI_TRANSITIONS=908} [2024-06-27 22:13:29,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-27 22:13:29,234 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 908 transitions, 16270 flow [2024-06-27 22:13:29,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:29,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:29,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:29,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:13:29,235 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:29,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash 711099203, now seen corresponding path program 6 times [2024-06-27 22:13:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093729207] [2024-06-27 22:13:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:30,876 INFO 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 22:13:30,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093729207] [2024-06-27 22:13:30,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093729207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:30,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:30,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8411477] [2024-06-27 22:13:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:31,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:31,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 908 transitions, 16270 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:31,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:31,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:31,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:32,269 INFO L124 PetriNetUnfolderBase]: 1906/3429 cut-off events. [2024-06-27 22:13:32,269 INFO L125 PetriNetUnfolderBase]: For 378441/378441 co-relation queries the response was YES. [2024-06-27 22:13:32,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30569 conditions, 3429 events. 1906/3429 cut-off events. For 378441/378441 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 21846 event pairs, 250 based on Foata normal form. 1/3284 useless extension candidates. Maximal degree in co-relation 30368. Up to 3131 conditions per place. [2024-06-27 22:13:32,325 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 882 selfloop transitions, 36 changer transitions 0/926 dead transitions. [2024-06-27 22:13:32,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 926 transitions, 18374 flow [2024-06-27 22:13:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-27 22:13:32,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37559808612440193 [2024-06-27 22:13:32,326 INFO L175 Difference]: Start difference. First operand has 499 places, 908 transitions, 16270 flow. Second operand 11 states and 157 transitions. [2024-06-27 22:13:32,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 926 transitions, 18374 flow [2024-06-27 22:13:35,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 926 transitions, 17913 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:35,333 INFO L231 Difference]: Finished difference. Result has 501 places, 910 transitions, 15933 flow [2024-06-27 22:13:35,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15809, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15933, PETRI_PLACES=501, PETRI_TRANSITIONS=910} [2024-06-27 22:13:35,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-27 22:13:35,334 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 910 transitions, 15933 flow [2024-06-27 22:13:35,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:35,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:35,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:35,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:13:35,335 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:35,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash -891964272, now seen corresponding path program 15 times [2024-06-27 22:13:35,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:35,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418880228] [2024-06-27 22:13:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:36,555 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 22:13:36,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418880228] [2024-06-27 22:13:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418880228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:36,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:36,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196862571] [2024-06-27 22:13:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:36,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:36,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:36,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 910 transitions, 15933 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:36,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:36,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:36,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:37,889 INFO L124 PetriNetUnfolderBase]: 1900/3419 cut-off events. [2024-06-27 22:13:37,889 INFO L125 PetriNetUnfolderBase]: For 372107/372107 co-relation queries the response was YES. [2024-06-27 22:13:37,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29716 conditions, 3419 events. 1900/3419 cut-off events. For 372107/372107 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 21781 event pairs, 242 based on Foata normal form. 3/3275 useless extension candidates. Maximal degree in co-relation 29514. Up to 2698 conditions per place. [2024-06-27 22:13:37,946 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 790 selfloop transitions, 148 changer transitions 0/946 dead transitions. [2024-06-27 22:13:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 946 transitions, 18577 flow [2024-06-27 22:13:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:13:37,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-06-27 22:13:37,947 INFO L175 Difference]: Start difference. First operand has 501 places, 910 transitions, 15933 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:13:37,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 946 transitions, 18577 flow [2024-06-27 22:13:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 946 transitions, 18479 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:40,572 INFO L231 Difference]: Finished difference. Result has 502 places, 910 transitions, 16139 flow [2024-06-27 22:13:40,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15835, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16139, PETRI_PLACES=502, PETRI_TRANSITIONS=910} [2024-06-27 22:13:40,573 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-27 22:13:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 910 transitions, 16139 flow [2024-06-27 22:13:40,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:40,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:40,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:13:40,574 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:40,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 711105155, now seen corresponding path program 17 times [2024-06-27 22:13:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453132886] [2024-06-27 22:13:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:42,010 INFO 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 22:13:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453132886] [2024-06-27 22:13:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453132886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120080027] [2024-06-27 22:13:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:42,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:42,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:42,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 910 transitions, 16139 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:42,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:43,471 INFO L124 PetriNetUnfolderBase]: 1894/3409 cut-off events. [2024-06-27 22:13:43,472 INFO L125 PetriNetUnfolderBase]: For 349721/349721 co-relation queries the response was YES. [2024-06-27 22:13:43,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29691 conditions, 3409 events. 1894/3409 cut-off events. For 349721/349721 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 21744 event pairs, 238 based on Foata normal form. 2/3264 useless extension candidates. Maximal degree in co-relation 29488. Up to 2782 conditions per place. [2024-06-27 22:13:43,530 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 774 selfloop transitions, 159 changer transitions 0/941 dead transitions. [2024-06-27 22:13:43,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 941 transitions, 18453 flow [2024-06-27 22:13:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 22:13:43,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043062200956938 [2024-06-27 22:13:43,531 INFO L175 Difference]: Start difference. First operand has 502 places, 910 transitions, 16139 flow. Second operand 11 states and 169 transitions. [2024-06-27 22:13:43,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 941 transitions, 18453 flow [2024-06-27 22:13:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 941 transitions, 18210 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:46,157 INFO L231 Difference]: Finished difference. Result has 506 places, 910 transitions, 16222 flow [2024-06-27 22:13:46,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15896, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16222, PETRI_PLACES=506, PETRI_TRANSITIONS=910} [2024-06-27 22:13:46,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-27 22:13:46,158 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 910 transitions, 16222 flow [2024-06-27 22:13:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:46,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:46,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:46,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:13:46,159 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:46,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash 567110765, now seen corresponding path program 7 times [2024-06-27 22:13:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:46,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744446700] [2024-06-27 22:13:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:47,323 INFO 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 22:13:47,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:47,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744446700] [2024-06-27 22:13:47,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744446700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:47,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:47,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558437740] [2024-06-27 22:13:47,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:47,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:47,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 910 transitions, 16222 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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 22:13:47,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:47,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:48,892 INFO L124 PetriNetUnfolderBase]: 1925/3459 cut-off events. [2024-06-27 22:13:48,893 INFO L125 PetriNetUnfolderBase]: For 354718/354718 co-relation queries the response was YES. [2024-06-27 22:13:48,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30242 conditions, 3459 events. 1925/3459 cut-off events. For 354718/354718 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 22053 event pairs, 177 based on Foata normal form. 1/3308 useless extension candidates. Maximal degree in co-relation 30038. Up to 2964 conditions per place. [2024-06-27 22:13:48,954 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 817 selfloop transitions, 130 changer transitions 0/955 dead transitions. [2024-06-27 22:13:48,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 955 transitions, 18833 flow [2024-06-27 22:13:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:13:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:13:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 22:13:48,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 22:13:48,957 INFO L175 Difference]: Start difference. First operand has 506 places, 910 transitions, 16222 flow. Second operand 12 states and 190 transitions. [2024-06-27 22:13:48,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 955 transitions, 18833 flow [2024-06-27 22:13:51,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 955 transitions, 18249 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 22:13:51,740 INFO L231 Difference]: Finished difference. Result has 507 places, 929 transitions, 16279 flow [2024-06-27 22:13:51,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15638, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=795, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16279, PETRI_PLACES=507, PETRI_TRANSITIONS=929} [2024-06-27 22:13:51,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-27 22:13:51,747 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 929 transitions, 16279 flow [2024-06-27 22:13:51,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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 22:13:51,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:51,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:51,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:13:51,747 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:51,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1700760288, now seen corresponding path program 16 times [2024-06-27 22:13:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:51,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580102663] [2024-06-27 22:13:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:53,144 INFO 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 22:13:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580102663] [2024-06-27 22:13:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580102663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758839935] [2024-06-27 22:13:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:53,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:13:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 929 transitions, 16279 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:13:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:54,831 INFO L124 PetriNetUnfolderBase]: 1940/3485 cut-off events. [2024-06-27 22:13:54,832 INFO L125 PetriNetUnfolderBase]: For 371290/371290 co-relation queries the response was YES. [2024-06-27 22:13:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30744 conditions, 3485 events. 1940/3485 cut-off events. For 371290/371290 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 22250 event pairs, 189 based on Foata normal form. 1/3335 useless extension candidates. Maximal degree in co-relation 30537. Up to 3044 conditions per place. [2024-06-27 22:13:54,894 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 839 selfloop transitions, 120 changer transitions 0/967 dead transitions. [2024-06-27 22:13:54,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 967 transitions, 18793 flow [2024-06-27 22:13:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:13:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:13:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-27 22:13:54,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048582995951417 [2024-06-27 22:13:54,895 INFO L175 Difference]: Start difference. First operand has 507 places, 929 transitions, 16279 flow. Second operand 13 states and 200 transitions. [2024-06-27 22:13:54,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 967 transitions, 18793 flow [2024-06-27 22:13:57,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 967 transitions, 18612 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 22:13:57,854 INFO L231 Difference]: Finished difference. Result has 515 places, 939 transitions, 16482 flow [2024-06-27 22:13:57,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16100, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16482, PETRI_PLACES=515, PETRI_TRANSITIONS=939} [2024-06-27 22:13:57,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-27 22:13:57,855 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 939 transitions, 16482 flow [2024-06-27 22:13:57,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:57,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:57,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:13:57,855 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:57,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1704247013, now seen corresponding path program 8 times [2024-06-27 22:13:57,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:57,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044477930] [2024-06-27 22:13:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:57,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:59,286 INFO 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 22:13:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:59,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044477930] [2024-06-27 22:13:59,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044477930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:59,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:59,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:59,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252535882] [2024-06-27 22:13:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:59,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:59,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 939 transitions, 16482 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:59,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:59,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:59,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:00,612 INFO L124 PetriNetUnfolderBase]: 1698/3226 cut-off events. [2024-06-27 22:14:00,612 INFO L125 PetriNetUnfolderBase]: For 366084/366168 co-relation queries the response was YES. [2024-06-27 22:14:00,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28524 conditions, 3226 events. 1698/3226 cut-off events. For 366084/366168 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 21920 event pairs, 226 based on Foata normal form. 8/3093 useless extension candidates. Maximal degree in co-relation 28315. Up to 2534 conditions per place. [2024-06-27 22:14:00,672 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 777 selfloop transitions, 142 changer transitions 0/964 dead transitions. [2024-06-27 22:14:00,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 964 transitions, 18716 flow [2024-06-27 22:14:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:14:00,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-27 22:14:00,682 INFO L175 Difference]: Start difference. First operand has 515 places, 939 transitions, 16482 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:14:00,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 964 transitions, 18716 flow [2024-06-27 22:14:03,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 964 transitions, 18547 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:03,400 INFO L231 Difference]: Finished difference. Result has 517 places, 943 transitions, 16679 flow [2024-06-27 22:14:03,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16313, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16679, PETRI_PLACES=517, PETRI_TRANSITIONS=943} [2024-06-27 22:14:03,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-27 22:14:03,401 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 943 transitions, 16679 flow [2024-06-27 22:14:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:03,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:03,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:14:03,403 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:03,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1722031403, now seen corresponding path program 9 times [2024-06-27 22:14:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396293230] [2024-06-27 22:14:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:04,986 INFO 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 22:14:04,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396293230] [2024-06-27 22:14:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396293230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:04,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:04,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:04,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407627069] [2024-06-27 22:14:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:04,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:05,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:05,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 943 transitions, 16679 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:05,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:05,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:05,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:06,305 INFO L124 PetriNetUnfolderBase]: 1696/3225 cut-off events. [2024-06-27 22:14:06,306 INFO L125 PetriNetUnfolderBase]: For 361111/361191 co-relation queries the response was YES. [2024-06-27 22:14:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28588 conditions, 3225 events. 1696/3225 cut-off events. For 361111/361191 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 21983 event pairs, 228 based on Foata normal form. 6/3090 useless extension candidates. Maximal degree in co-relation 28377. Up to 2584 conditions per place. [2024-06-27 22:14:06,364 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 792 selfloop transitions, 123 changer transitions 0/960 dead transitions. [2024-06-27 22:14:06,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 960 transitions, 18553 flow [2024-06-27 22:14:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:14:06,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-27 22:14:06,365 INFO L175 Difference]: Start difference. First operand has 517 places, 943 transitions, 16679 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:14:06,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 960 transitions, 18553 flow [2024-06-27 22:14:09,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 960 transitions, 18262 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:09,291 INFO L231 Difference]: Finished difference. Result has 519 places, 943 transitions, 16663 flow [2024-06-27 22:14:09,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16388, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=820, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16663, PETRI_PLACES=519, PETRI_TRANSITIONS=943} [2024-06-27 22:14:09,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-27 22:14:09,292 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 943 transitions, 16663 flow [2024-06-27 22:14:09,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:09,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:09,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:14:09,292 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:09,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash -180158490, now seen corresponding path program 17 times [2024-06-27 22:14:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064217680] [2024-06-27 22:14:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:09,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:10,880 INFO 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 22:14:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064217680] [2024-06-27 22:14:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064217680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727667753] [2024-06-27 22:14:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:10,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:11,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:11,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 943 transitions, 16663 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:11,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:11,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:12,523 INFO L124 PetriNetUnfolderBase]: 1954/3511 cut-off events. [2024-06-27 22:14:12,524 INFO L125 PetriNetUnfolderBase]: For 368114/368114 co-relation queries the response was YES. [2024-06-27 22:14:12,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31244 conditions, 3511 events. 1954/3511 cut-off events. For 368114/368114 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 22524 event pairs, 193 based on Foata normal form. 1/3360 useless extension candidates. Maximal degree in co-relation 31033. Up to 3119 conditions per place. [2024-06-27 22:14:12,587 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 868 selfloop transitions, 97 changer transitions 0/973 dead transitions. [2024-06-27 22:14:12,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 973 transitions, 18809 flow [2024-06-27 22:14:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:14:12,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-27 22:14:12,589 INFO L175 Difference]: Start difference. First operand has 519 places, 943 transitions, 16663 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:14:12,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 973 transitions, 18809 flow [2024-06-27 22:14:15,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 973 transitions, 18527 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:15,834 INFO L231 Difference]: Finished difference. Result has 520 places, 950 transitions, 16657 flow [2024-06-27 22:14:15,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16381, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16657, PETRI_PLACES=520, PETRI_TRANSITIONS=950} [2024-06-27 22:14:15,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-27 22:14:15,835 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 950 transitions, 16657 flow [2024-06-27 22:14:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:15,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:15,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:14:15,836 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:15,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1543219829, now seen corresponding path program 18 times [2024-06-27 22:14:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775712873] [2024-06-27 22:14:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:17,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775712873] [2024-06-27 22:14:17,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775712873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:17,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:17,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:17,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239801767] [2024-06-27 22:14:17,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:17,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:17,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:17,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 950 transitions, 16657 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:17,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:17,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:17,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:19,812 INFO L124 PetriNetUnfolderBase]: 2025/3648 cut-off events. [2024-06-27 22:14:19,812 INFO L125 PetriNetUnfolderBase]: For 379474/379474 co-relation queries the response was YES. [2024-06-27 22:14:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32030 conditions, 3648 events. 2025/3648 cut-off events. For 379474/379474 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 23740 event pairs, 176 based on Foata normal form. 2/3477 useless extension candidates. Maximal degree in co-relation 31819. Up to 2546 conditions per place. [2024-06-27 22:14:19,877 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 671 selfloop transitions, 384 changer transitions 0/1063 dead transitions. [2024-06-27 22:14:19,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1063 transitions, 20174 flow [2024-06-27 22:14:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:14:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:14:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-27 22:14:19,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271255060728745 [2024-06-27 22:14:19,879 INFO L175 Difference]: Start difference. First operand has 520 places, 950 transitions, 16657 flow. Second operand 13 states and 211 transitions. [2024-06-27 22:14:19,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1063 transitions, 20174 flow [2024-06-27 22:14:22,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1063 transitions, 20017 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:22,895 INFO L231 Difference]: Finished difference. Result has 528 places, 1036 transitions, 18484 flow [2024-06-27 22:14:22,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18484, PETRI_PLACES=528, PETRI_TRANSITIONS=1036} [2024-06-27 22:14:22,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-27 22:14:22,895 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1036 transitions, 18484 flow [2024-06-27 22:14:22,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:22,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:22,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:14:22,896 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:22,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2093068240, now seen corresponding path program 18 times [2024-06-27 22:14:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90997336] [2024-06-27 22:14:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:22,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:24,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90997336] [2024-06-27 22:14:24,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90997336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:24,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:24,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563759290] [2024-06-27 22:14:24,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:24,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:24,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:24,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1036 transitions, 18484 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:26,405 INFO L124 PetriNetUnfolderBase]: 2054/3715 cut-off events. [2024-06-27 22:14:26,406 INFO L125 PetriNetUnfolderBase]: For 394534/394534 co-relation queries the response was YES. [2024-06-27 22:14:26,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34004 conditions, 3715 events. 2054/3715 cut-off events. For 394534/394534 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 24406 event pairs, 165 based on Foata normal form. 1/3543 useless extension candidates. Maximal degree in co-relation 33789. Up to 2590 conditions per place. [2024-06-27 22:14:26,488 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 722 selfloop transitions, 372 changer transitions 0/1102 dead transitions. [2024-06-27 22:14:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1102 transitions, 21761 flow [2024-06-27 22:14:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:14:26,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:14:26,494 INFO L175 Difference]: Start difference. First operand has 528 places, 1036 transitions, 18484 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:14:26,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1102 transitions, 21761 flow [2024-06-27 22:14:29,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1102 transitions, 21385 flow, removed 82 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:29,958 INFO L231 Difference]: Finished difference. Result has 534 places, 1076 transitions, 19370 flow [2024-06-27 22:14:29,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18124, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19370, PETRI_PLACES=534, PETRI_TRANSITIONS=1076} [2024-06-27 22:14:29,959 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 492 predicate places. [2024-06-27 22:14:29,959 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 1076 transitions, 19370 flow [2024-06-27 22:14:29,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:29,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:29,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:29,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:14:29,960 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:29,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:29,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2093062660, now seen corresponding path program 19 times [2024-06-27 22:14:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:29,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128110861] [2024-06-27 22:14:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:29,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:31,617 INFO 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 22:14:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128110861] [2024-06-27 22:14:31,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128110861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:31,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:31,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719450824] [2024-06-27 22:14:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:31,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:31,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:31,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 1076 transitions, 19370 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:31,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:31,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:31,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:33,557 INFO L124 PetriNetUnfolderBase]: 2052/3712 cut-off events. [2024-06-27 22:14:33,558 INFO L125 PetriNetUnfolderBase]: For 389088/389088 co-relation queries the response was YES. [2024-06-27 22:14:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 3712 events. 2052/3712 cut-off events. For 389088/389088 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 24402 event pairs, 165 based on Foata normal form. 1/3540 useless extension candidates. Maximal degree in co-relation 34213. Up to 2588 conditions per place. [2024-06-27 22:14:33,631 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 731 selfloop transitions, 362 changer transitions 0/1101 dead transitions. [2024-06-27 22:14:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 1101 transitions, 22084 flow [2024-06-27 22:14:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:14:33,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:14:33,632 INFO L175 Difference]: Start difference. First operand has 534 places, 1076 transitions, 19370 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:14:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 1101 transitions, 22084 flow [2024-06-27 22:14:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1101 transitions, 21825 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:37,157 INFO L231 Difference]: Finished difference. Result has 540 places, 1076 transitions, 19844 flow [2024-06-27 22:14:37,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19111, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19844, PETRI_PLACES=540, PETRI_TRANSITIONS=1076} [2024-06-27 22:14:37,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-27 22:14:37,159 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1076 transitions, 19844 flow [2024-06-27 22:14:37,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:37,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:37,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:37,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:14:37,159 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:37,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2093062505, now seen corresponding path program 10 times [2024-06-27 22:14:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:37,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973086996] [2024-06-27 22:14:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:38,851 INFO 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 22:14:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973086996] [2024-06-27 22:14:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973086996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:38,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750774178] [2024-06-27 22:14:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:38,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:38,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:38,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:38,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1076 transitions, 19844 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:38,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:38,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:38,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:40,423 INFO L124 PetriNetUnfolderBase]: 1912/3576 cut-off events. [2024-06-27 22:14:40,424 INFO L125 PetriNetUnfolderBase]: For 389619/389669 co-relation queries the response was YES. [2024-06-27 22:14:40,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33120 conditions, 3576 events. 1912/3576 cut-off events. For 389619/389669 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 24446 event pairs, 206 based on Foata normal form. 2/3410 useless extension candidates. Maximal degree in co-relation 32900. Up to 2728 conditions per place. [2024-06-27 22:14:40,496 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 778 selfloop transitions, 267 changer transitions 0/1093 dead transitions. [2024-06-27 22:14:40,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1093 transitions, 22016 flow [2024-06-27 22:14:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:14:40,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-06-27 22:14:40,497 INFO L175 Difference]: Start difference. First operand has 540 places, 1076 transitions, 19844 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:14:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1093 transitions, 22016 flow [2024-06-27 22:14:43,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1093 transitions, 21252 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:43,692 INFO L231 Difference]: Finished difference. Result has 540 places, 1078 transitions, 19681 flow [2024-06-27 22:14:43,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19080, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19681, PETRI_PLACES=540, PETRI_TRANSITIONS=1078} [2024-06-27 22:14:43,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-27 22:14:43,693 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1078 transitions, 19681 flow [2024-06-27 22:14:43,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:43,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:43,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:43,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:14:43,694 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:43,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1853204334, now seen corresponding path program 20 times [2024-06-27 22:14:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792101516] [2024-06-27 22:14:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:45,594 INFO 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 22:14:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792101516] [2024-06-27 22:14:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792101516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:45,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:45,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:45,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22989567] [2024-06-27 22:14:45,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:45,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:45,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:45,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1078 transitions, 19681 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:45,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:45,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:47,501 INFO L124 PetriNetUnfolderBase]: 2067/3738 cut-off events. [2024-06-27 22:14:47,501 INFO L125 PetriNetUnfolderBase]: For 398774/398774 co-relation queries the response was YES. [2024-06-27 22:14:47,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34896 conditions, 3738 events. 2067/3738 cut-off events. For 398774/398774 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 24581 event pairs, 188 based on Foata normal form. 1/3565 useless extension candidates. Maximal degree in co-relation 34675. Up to 3311 conditions per place. [2024-06-27 22:14:47,574 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1004 selfloop transitions, 96 changer transitions 0/1108 dead transitions. [2024-06-27 22:14:47,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1108 transitions, 22121 flow [2024-06-27 22:14:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:14:47,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-27 22:14:47,575 INFO L175 Difference]: Start difference. First operand has 540 places, 1078 transitions, 19681 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:14:47,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1108 transitions, 22121 flow [2024-06-27 22:14:51,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1108 transitions, 21566 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:51,253 INFO L231 Difference]: Finished difference. Result has 543 places, 1087 transitions, 19449 flow [2024-06-27 22:14:51,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19126, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19449, PETRI_PLACES=543, PETRI_TRANSITIONS=1087} [2024-06-27 22:14:51,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-27 22:14:51,254 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 1087 transitions, 19449 flow [2024-06-27 22:14:51,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:51,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:51,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:14:51,254 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:51,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1384039195, now seen corresponding path program 19 times [2024-06-27 22:14:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241099358] [2024-06-27 22:14:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241099358] [2024-06-27 22:14:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241099358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724907130] [2024-06-27 22:14:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:52,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:14:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 1087 transitions, 19449 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:14:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:54,869 INFO L124 PetriNetUnfolderBase]: 2210/3991 cut-off events. [2024-06-27 22:14:54,870 INFO L125 PetriNetUnfolderBase]: For 432110/432110 co-relation queries the response was YES. [2024-06-27 22:14:54,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36659 conditions, 3991 events. 2210/3991 cut-off events. For 432110/432110 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 26653 event pairs, 187 based on Foata normal form. 2/3792 useless extension candidates. Maximal degree in co-relation 36437. Up to 2462 conditions per place. [2024-06-27 22:14:54,942 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 663 selfloop transitions, 575 changer transitions 0/1246 dead transitions. [2024-06-27 22:14:54,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1246 transitions, 24431 flow [2024-06-27 22:14:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:54,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:14:54,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:14:54,943 INFO L175 Difference]: Start difference. First operand has 543 places, 1087 transitions, 19449 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:14:54,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1246 transitions, 24431 flow [2024-06-27 22:14:58,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1246 transitions, 24276 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:58,744 INFO L231 Difference]: Finished difference. Result has 548 places, 1215 transitions, 22598 flow [2024-06-27 22:14:58,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19294, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22598, PETRI_PLACES=548, PETRI_TRANSITIONS=1215} [2024-06-27 22:14:58,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-27 22:14:58,745 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 1215 transitions, 22598 flow [2024-06-27 22:14:58,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:58,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:58,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:58,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:14:58,745 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:58,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1849479684, now seen corresponding path program 21 times [2024-06-27 22:14:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8382324] [2024-06-27 22:14:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:00,574 INFO 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 22:15:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8382324] [2024-06-27 22:15:00,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8382324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:00,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:00,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277609425] [2024-06-27 22:15:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:00,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 1215 transitions, 22598 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:00,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:00,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:00,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:02,610 INFO L124 PetriNetUnfolderBase]: 2248/4061 cut-off events. [2024-06-27 22:15:02,611 INFO L125 PetriNetUnfolderBase]: For 455559/455559 co-relation queries the response was YES. [2024-06-27 22:15:02,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39444 conditions, 4061 events. 2248/4061 cut-off events. For 455559/455559 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 27281 event pairs, 179 based on Foata normal form. 1/3860 useless extension candidates. Maximal degree in co-relation 39219. Up to 2897 conditions per place. [2024-06-27 22:15:02,689 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 889 selfloop transitions, 377 changer transitions 0/1274 dead transitions. [2024-06-27 22:15:02,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 1274 transitions, 26561 flow [2024-06-27 22:15:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:15:02,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:15:02,691 INFO L175 Difference]: Start difference. First operand has 548 places, 1215 transitions, 22598 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:15:02,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 1274 transitions, 26561 flow [2024-06-27 22:15:06,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 1274 transitions, 26306 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:06,172 INFO L231 Difference]: Finished difference. Result has 555 places, 1247 transitions, 23567 flow [2024-06-27 22:15:06,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=22349, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23567, PETRI_PLACES=555, PETRI_TRANSITIONS=1247} [2024-06-27 22:15:06,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 513 predicate places. [2024-06-27 22:15:06,173 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 1247 transitions, 23567 flow [2024-06-27 22:15:06,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:06,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:06,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:15:06,174 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:06,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1849485264, now seen corresponding path program 22 times [2024-06-27 22:15:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716182439] [2024-06-27 22:15:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:08,090 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 22:15:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716182439] [2024-06-27 22:15:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716182439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:08,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:08,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075552588] [2024-06-27 22:15:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:08,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:08,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1247 transitions, 23567 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:08,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:08,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:10,341 INFO L124 PetriNetUnfolderBase]: 2246/4058 cut-off events. [2024-06-27 22:15:10,341 INFO L125 PetriNetUnfolderBase]: For 447979/447979 co-relation queries the response was YES. [2024-06-27 22:15:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39880 conditions, 4058 events. 2246/4058 cut-off events. For 447979/447979 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 27228 event pairs, 178 based on Foata normal form. 1/3857 useless extension candidates. Maximal degree in co-relation 39652. Up to 2895 conditions per place. [2024-06-27 22:15:10,421 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 894 selfloop transitions, 371 changer transitions 0/1273 dead transitions. [2024-06-27 22:15:10,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1273 transitions, 26915 flow [2024-06-27 22:15:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:15:10,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:15:10,422 INFO L175 Difference]: Start difference. First operand has 555 places, 1247 transitions, 23567 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:15:10,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1273 transitions, 26915 flow [2024-06-27 22:15:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 1273 transitions, 26511 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:14,815 INFO L231 Difference]: Finished difference. Result has 561 places, 1247 transitions, 23919 flow [2024-06-27 22:15:14,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23163, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=876, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23919, PETRI_PLACES=561, PETRI_TRANSITIONS=1247} [2024-06-27 22:15:14,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 519 predicate places. [2024-06-27 22:15:14,816 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 1247 transitions, 23919 flow [2024-06-27 22:15:14,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:14,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:14,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:14,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:15:14,817 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:14,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1533800439, now seen corresponding path program 20 times [2024-06-27 22:15:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054797094] [2024-06-27 22:15:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:16,672 INFO 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 22:15:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054797094] [2024-06-27 22:15:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054797094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:16,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:16,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:16,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106151957] [2024-06-27 22:15:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:16,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:16,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:16,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:16,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 1247 transitions, 23919 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:16,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:16,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:19,012 INFO L124 PetriNetUnfolderBase]: 2293/4133 cut-off events. [2024-06-27 22:15:19,013 INFO L125 PetriNetUnfolderBase]: For 468759/468759 co-relation queries the response was YES. [2024-06-27 22:15:19,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40681 conditions, 4133 events. 2293/4133 cut-off events. For 468759/468759 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 27730 event pairs, 170 based on Foata normal form. 2/3918 useless extension candidates. Maximal degree in co-relation 40452. Up to 2896 conditions per place. [2024-06-27 22:15:19,098 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 870 selfloop transitions, 443 changer transitions 0/1321 dead transitions. [2024-06-27 22:15:19,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1321 transitions, 28364 flow [2024-06-27 22:15:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:15:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:15:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 228 transitions. [2024-06-27 22:15:19,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 22:15:19,125 INFO L175 Difference]: Start difference. First operand has 561 places, 1247 transitions, 23919 flow. Second operand 14 states and 228 transitions. [2024-06-27 22:15:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1321 transitions, 28364 flow [2024-06-27 22:15:24,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 1321 transitions, 27576 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:15:24,149 INFO L231 Difference]: Finished difference. Result has 568 places, 1293 transitions, 25154 flow [2024-06-27 22:15:24,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=23131, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=25154, PETRI_PLACES=568, PETRI_TRANSITIONS=1293} [2024-06-27 22:15:24,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 526 predicate places. [2024-06-27 22:15:24,150 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 1293 transitions, 25154 flow [2024-06-27 22:15:24,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:24,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:24,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:24,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:15:24,151 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:24,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1705387344, now seen corresponding path program 23 times [2024-06-27 22:15:24,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:24,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828083284] [2024-06-27 22:15:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828083284] [2024-06-27 22:15:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828083284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679440720] [2024-06-27 22:15:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:26,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:26,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 1293 transitions, 25154 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:26,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:26,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:28,129 INFO L124 PetriNetUnfolderBase]: 2303/4150 cut-off events. [2024-06-27 22:15:28,130 INFO L125 PetriNetUnfolderBase]: For 473301/473301 co-relation queries the response was YES. [2024-06-27 22:15:28,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41359 conditions, 4150 events. 2303/4150 cut-off events. For 473301/473301 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 27880 event pairs, 162 based on Foata normal form. 1/3933 useless extension candidates. Maximal degree in co-relation 41126. Up to 2985 conditions per place. [2024-06-27 22:15:28,217 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 915 selfloop transitions, 403 changer transitions 0/1326 dead transitions. [2024-06-27 22:15:28,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1326 transitions, 28725 flow [2024-06-27 22:15:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:15:28,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:15:28,218 INFO L175 Difference]: Start difference. First operand has 568 places, 1293 transitions, 25154 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:15:28,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1326 transitions, 28725 flow [2024-06-27 22:15:33,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1326 transitions, 28187 flow, removed 202 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:33,553 INFO L231 Difference]: Finished difference. Result has 574 places, 1302 transitions, 25550 flow [2024-06-27 22:15:33,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24624, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=899, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25550, PETRI_PLACES=574, PETRI_TRANSITIONS=1302} [2024-06-27 22:15:33,554 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 532 predicate places. [2024-06-27 22:15:33,554 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 1302 transitions, 25550 flow [2024-06-27 22:15:33,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:33,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:33,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:15:33,555 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:33,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 868650272, now seen corresponding path program 24 times [2024-06-27 22:15:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139434688] [2024-06-27 22:15:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:35,374 INFO 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 22:15:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:35,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139434688] [2024-06-27 22:15:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139434688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:35,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:35,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166079061] [2024-06-27 22:15:35,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:35,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:35,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:35,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 1302 transitions, 25550 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:35,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:35,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:35,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:37,729 INFO L124 PetriNetUnfolderBase]: 2309/4161 cut-off events. [2024-06-27 22:15:37,729 INFO L125 PetriNetUnfolderBase]: For 459386/459386 co-relation queries the response was YES. [2024-06-27 22:15:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41874 conditions, 4161 events. 2309/4161 cut-off events. For 459386/459386 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 28015 event pairs, 162 based on Foata normal form. 1/3944 useless extension candidates. Maximal degree in co-relation 41639. Up to 2993 conditions per place. [2024-06-27 22:15:37,802 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 943 selfloop transitions, 381 changer transitions 0/1332 dead transitions. [2024-06-27 22:15:37,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 1332 transitions, 29114 flow [2024-06-27 22:15:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:15:37,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:15:37,803 INFO L175 Difference]: Start difference. First operand has 574 places, 1302 transitions, 25550 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:15:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 1332 transitions, 29114 flow [2024-06-27 22:15:41,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1332 transitions, 28524 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:41,988 INFO L231 Difference]: Finished difference. Result has 578 places, 1306 transitions, 25795 flow [2024-06-27 22:15:41,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=24968, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25795, PETRI_PLACES=578, PETRI_TRANSITIONS=1306} [2024-06-27 22:15:41,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 536 predicate places. [2024-06-27 22:15:41,989 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 1306 transitions, 25795 flow [2024-06-27 22:15:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:41,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:41,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:41,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:15:41,990 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:41,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash 868650117, now seen corresponding path program 11 times [2024-06-27 22:15:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:41,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770166185] [2024-06-27 22:15:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:41,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:43,609 INFO 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 22:15:43,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770166185] [2024-06-27 22:15:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770166185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:15:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097605381] [2024-06-27 22:15:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:15:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:15:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:15:43,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:43,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 1306 transitions, 25795 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:43,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:43,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:43,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:45,532 INFO L124 PetriNetUnfolderBase]: 2186/4037 cut-off events. [2024-06-27 22:15:45,532 INFO L125 PetriNetUnfolderBase]: For 461085/461111 co-relation queries the response was YES. [2024-06-27 22:15:45,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40303 conditions, 4037 events. 2186/4037 cut-off events. For 461085/461111 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 27953 event pairs, 195 based on Foata normal form. 1/3821 useless extension candidates. Maximal degree in co-relation 40067. Up to 3145 conditions per place. [2024-06-27 22:15:45,615 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 1013 selfloop transitions, 255 changer transitions 0/1321 dead transitions. [2024-06-27 22:15:45,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1321 transitions, 28407 flow [2024-06-27 22:15:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:15:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:15:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:15:45,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 22:15:45,616 INFO L175 Difference]: Start difference. First operand has 578 places, 1306 transitions, 25795 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:15:45,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1321 transitions, 28407 flow [2024-06-27 22:15:50,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 1321 transitions, 27644 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:50,409 INFO L231 Difference]: Finished difference. Result has 580 places, 1308 transitions, 25607 flow [2024-06-27 22:15:50,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25032, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25607, PETRI_PLACES=580, PETRI_TRANSITIONS=1308} [2024-06-27 22:15:50,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 538 predicate places. [2024-06-27 22:15:50,410 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 1308 transitions, 25607 flow [2024-06-27 22:15:50,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:50,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:50,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:50,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:15:50,411 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:50,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1705387127, now seen corresponding path program 21 times [2024-06-27 22:15:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567123820] [2024-06-27 22:15:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:52,005 INFO 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 22:15:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567123820] [2024-06-27 22:15:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567123820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345699024] [2024-06-27 22:15:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:52,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:15:52,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 1308 transitions, 25607 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:52,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:52,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:15:52,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:54,238 INFO L124 PetriNetUnfolderBase]: 2329/4195 cut-off events. [2024-06-27 22:15:54,239 INFO L125 PetriNetUnfolderBase]: For 469928/469928 co-relation queries the response was YES. [2024-06-27 22:15:54,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41991 conditions, 4195 events. 2329/4195 cut-off events. For 469928/469928 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 28268 event pairs, 173 based on Foata normal form. 2/3977 useless extension candidates. Maximal degree in co-relation 41754. Up to 2640 conditions per place. [2024-06-27 22:15:54,326 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 761 selfloop transitions, 574 changer transitions 0/1343 dead transitions. [2024-06-27 22:15:54,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1343 transitions, 29269 flow [2024-06-27 22:15:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:15:54,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:15:54,327 INFO L175 Difference]: Start difference. First operand has 580 places, 1308 transitions, 25607 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:15:54,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 1343 transitions, 29269 flow [2024-06-27 22:15:59,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 1343 transitions, 28732 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:59,570 INFO L231 Difference]: Finished difference. Result has 583 places, 1314 transitions, 26326 flow [2024-06-27 22:15:59,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26326, PETRI_PLACES=583, PETRI_TRANSITIONS=1314} [2024-06-27 22:15:59,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 541 predicate places. [2024-06-27 22:15:59,571 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1314 transitions, 26326 flow [2024-06-27 22:15:59,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:59,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:59,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:15:59,572 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:59,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1705589154, now seen corresponding path program 25 times [2024-06-27 22:15:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:59,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234876293] [2024-06-27 22:15:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:01,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234876293] [2024-06-27 22:16:01,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234876293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:01,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:01,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:01,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108609929] [2024-06-27 22:16:01,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:01,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:01,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:01,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:01,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1314 transitions, 26326 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:01,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:01,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:01,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:03,715 INFO L124 PetriNetUnfolderBase]: 2327/4190 cut-off events. [2024-06-27 22:16:03,716 INFO L125 PetriNetUnfolderBase]: For 461797/461797 co-relation queries the response was YES. [2024-06-27 22:16:03,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42512 conditions, 4190 events. 2327/4190 cut-off events. For 461797/461797 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 28171 event pairs, 162 based on Foata normal form. 1/3970 useless extension candidates. Maximal degree in co-relation 42274. Up to 3022 conditions per place. [2024-06-27 22:16:03,800 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 956 selfloop transitions, 377 changer transitions 0/1341 dead transitions. [2024-06-27 22:16:03,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1341 transitions, 29588 flow [2024-06-27 22:16:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:16:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:16:03,804 INFO L175 Difference]: Start difference. First operand has 583 places, 1314 transitions, 26326 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:16:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 1341 transitions, 29588 flow [2024-06-27 22:16:08,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1341 transitions, 28962 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:16:08,906 INFO L231 Difference]: Finished difference. Result has 588 places, 1314 transitions, 26465 flow [2024-06-27 22:16:08,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25700, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26465, PETRI_PLACES=588, PETRI_TRANSITIONS=1314} [2024-06-27 22:16:08,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 546 predicate places. [2024-06-27 22:16:08,908 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 1314 transitions, 26465 flow [2024-06-27 22:16:08,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:08,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:08,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:08,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:16:08,908 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:08,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1705588937, now seen corresponding path program 22 times [2024-06-27 22:16:08,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:08,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258554654] [2024-06-27 22:16:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:08,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:10,531 INFO 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 22:16:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258554654] [2024-06-27 22:16:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258554654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:10,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:10,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122156689] [2024-06-27 22:16:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:10,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 1314 transitions, 26465 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:10,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:10,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:12,708 INFO L124 PetriNetUnfolderBase]: 2322/4184 cut-off events. [2024-06-27 22:16:12,708 INFO L125 PetriNetUnfolderBase]: For 457889/457889 co-relation queries the response was YES. [2024-06-27 22:16:12,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42111 conditions, 4184 events. 2322/4184 cut-off events. For 457889/457889 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 28174 event pairs, 173 based on Foata normal form. 2/3966 useless extension candidates. Maximal degree in co-relation 41872. Up to 2632 conditions per place. [2024-06-27 22:16:12,797 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 770 selfloop transitions, 564 changer transitions 0/1342 dead transitions. [2024-06-27 22:16:12,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1342 transitions, 29693 flow [2024-06-27 22:16:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:16:12,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:16:12,799 INFO L175 Difference]: Start difference. First operand has 588 places, 1314 transitions, 26465 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:16:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 1342 transitions, 29693 flow [2024-06-27 22:16:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1342 transitions, 28783 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 22:16:17,417 INFO L231 Difference]: Finished difference. Result has 586 places, 1311 transitions, 26631 flow [2024-06-27 22:16:17,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25488, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26631, PETRI_PLACES=586, PETRI_TRANSITIONS=1311} [2024-06-27 22:16:17,418 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 544 predicate places. [2024-06-27 22:16:17,418 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1311 transitions, 26631 flow [2024-06-27 22:16:17,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:17,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:17,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:16:17,419 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:17,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -602155580, now seen corresponding path program 26 times [2024-06-27 22:16:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664330891] [2024-06-27 22:16:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664330891] [2024-06-27 22:16:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664330891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564253230] [2024-06-27 22:16:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:19,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:19,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1311 transitions, 26631 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:19,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:19,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:21,906 INFO L124 PetriNetUnfolderBase]: 2324/4184 cut-off events. [2024-06-27 22:16:21,907 INFO L125 PetriNetUnfolderBase]: For 453041/453041 co-relation queries the response was YES. [2024-06-27 22:16:21,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42334 conditions, 4184 events. 2324/4184 cut-off events. For 453041/453041 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 28164 event pairs, 154 based on Foata normal form. 1/3964 useless extension candidates. Maximal degree in co-relation 42096. Up to 3729 conditions per place. [2024-06-27 22:16:21,985 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1236 selfloop transitions, 95 changer transitions 0/1339 dead transitions. [2024-06-27 22:16:21,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 1339 transitions, 29517 flow [2024-06-27 22:16:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:16:21,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-27 22:16:21,986 INFO L175 Difference]: Start difference. First operand has 586 places, 1311 transitions, 26631 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:16:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 1339 transitions, 29517 flow [2024-06-27 22:16:26,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1339 transitions, 28609 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:16:26,401 INFO L231 Difference]: Finished difference. Result has 588 places, 1320 transitions, 26056 flow [2024-06-27 22:16:26,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25723, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26056, PETRI_PLACES=588, PETRI_TRANSITIONS=1320} [2024-06-27 22:16:26,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 546 predicate places. [2024-06-27 22:16:26,402 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 1320 transitions, 26056 flow [2024-06-27 22:16:26,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:26,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:26,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:26,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:16:26,402 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:26,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -598430713, now seen corresponding path program 23 times [2024-06-27 22:16:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:26,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671260116] [2024-06-27 22:16:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:26,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:28,146 INFO 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 22:16:28,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671260116] [2024-06-27 22:16:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671260116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:28,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:28,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:28,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537157381] [2024-06-27 22:16:28,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:28,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:28,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:28,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:28,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 1320 transitions, 26056 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:28,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:28,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:28,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:30,671 INFO L124 PetriNetUnfolderBase]: 2410/4333 cut-off events. [2024-06-27 22:16:30,671 INFO L125 PetriNetUnfolderBase]: For 468948/468948 co-relation queries the response was YES. [2024-06-27 22:16:30,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42788 conditions, 4333 events. 2410/4333 cut-off events. For 468948/468948 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 29384 event pairs, 186 based on Foata normal form. 2/4089 useless extension candidates. Maximal degree in co-relation 42549. Up to 2968 conditions per place. [2024-06-27 22:16:30,766 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 832 selfloop transitions, 599 changer transitions 0/1439 dead transitions. [2024-06-27 22:16:30,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1439 transitions, 31230 flow [2024-06-27 22:16:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:16:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:16:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-06-27 22:16:30,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-06-27 22:16:30,768 INFO L175 Difference]: Start difference. First operand has 588 places, 1320 transitions, 26056 flow. Second operand 14 states and 234 transitions. [2024-06-27 22:16:30,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1439 transitions, 31230 flow [2024-06-27 22:16:36,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 1439 transitions, 31073 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:36,201 INFO L231 Difference]: Finished difference. Result has 598 places, 1410 transitions, 29047 flow [2024-06-27 22:16:36,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=25899, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=29047, PETRI_PLACES=598, PETRI_TRANSITIONS=1410} [2024-06-27 22:16:36,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 556 predicate places. [2024-06-27 22:16:36,202 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1410 transitions, 29047 flow [2024-06-27 22:16:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:36,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:36,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:16:36,203 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:36,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash -598430930, now seen corresponding path program 27 times [2024-06-27 22:16:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718819358] [2024-06-27 22:16:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:38,181 INFO 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 22:16:38,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718819358] [2024-06-27 22:16:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718819358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:38,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480922629] [2024-06-27 22:16:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:38,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:38,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1410 transitions, 29047 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:38,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:38,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:38,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:40,652 INFO L124 PetriNetUnfolderBase]: 2445/4400 cut-off events. [2024-06-27 22:16:40,653 INFO L125 PetriNetUnfolderBase]: For 488100/488100 co-relation queries the response was YES. [2024-06-27 22:16:40,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45077 conditions, 4400 events. 2445/4400 cut-off events. For 488100/488100 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 30018 event pairs, 195 based on Foata normal form. 1/4155 useless extension candidates. Maximal degree in co-relation 44834. Up to 3222 conditions per place. [2024-06-27 22:16:40,736 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1037 selfloop transitions, 430 changer transitions 0/1475 dead transitions. [2024-06-27 22:16:40,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1475 transitions, 33318 flow [2024-06-27 22:16:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:16:40,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:16:40,737 INFO L175 Difference]: Start difference. First operand has 598 places, 1410 transitions, 29047 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:16:40,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1475 transitions, 33318 flow [2024-06-27 22:16:46,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1475 transitions, 32285 flow, removed 216 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:46,856 INFO L231 Difference]: Finished difference. Result has 605 places, 1451 transitions, 29410 flow [2024-06-27 22:16:46,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=28014, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29410, PETRI_PLACES=605, PETRI_TRANSITIONS=1451} [2024-06-27 22:16:46,857 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 563 predicate places. [2024-06-27 22:16:46,857 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 1451 transitions, 29410 flow [2024-06-27 22:16:46,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:46,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:46,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:46,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:16:46,858 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:46,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 879350776, now seen corresponding path program 28 times [2024-06-27 22:16:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725266110] [2024-06-27 22:16:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:48,838 INFO 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 22:16:48,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725266110] [2024-06-27 22:16:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725266110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:48,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:48,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223287833] [2024-06-27 22:16:48,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:48,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:48,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:48,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 1451 transitions, 29410 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:48,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:48,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:48,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:51,291 INFO L124 PetriNetUnfolderBase]: 2443/4397 cut-off events. [2024-06-27 22:16:51,291 INFO L125 PetriNetUnfolderBase]: For 470430/470430 co-relation queries the response was YES. [2024-06-27 22:16:51,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44753 conditions, 4397 events. 2443/4397 cut-off events. For 470430/470430 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 29995 event pairs, 195 based on Foata normal form. 1/4152 useless extension candidates. Maximal degree in co-relation 44508. Up to 3220 conditions per place. [2024-06-27 22:16:51,383 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1042 selfloop transitions, 424 changer transitions 0/1474 dead transitions. [2024-06-27 22:16:51,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1474 transitions, 32916 flow [2024-06-27 22:16:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:16:51,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:16:51,384 INFO L175 Difference]: Start difference. First operand has 605 places, 1451 transitions, 29410 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:16:51,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1474 transitions, 32916 flow [2024-06-27 22:16:56,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 1474 transitions, 32414 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:56,161 INFO L231 Difference]: Finished difference. Result has 611 places, 1451 transitions, 29772 flow [2024-06-27 22:16:56,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=28908, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1027, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29772, PETRI_PLACES=611, PETRI_TRANSITIONS=1451} [2024-06-27 22:16:56,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 569 predicate places. [2024-06-27 22:16:56,162 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 1451 transitions, 29772 flow [2024-06-27 22:16:56,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:56,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:56,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:16:56,163 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:56,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -454545980, now seen corresponding path program 29 times [2024-06-27 22:16:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:56,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546225327] [2024-06-27 22:16:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:58,195 INFO 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 22:16:58,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546225327] [2024-06-27 22:16:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546225327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:58,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:58,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883530000] [2024-06-27 22:16:58,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:58,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:58,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:16:58,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 1451 transitions, 29772 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:58,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:58,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:16:58,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:00,728 INFO L124 PetriNetUnfolderBase]: 2459/4426 cut-off events. [2024-06-27 22:17:00,729 INFO L125 PetriNetUnfolderBase]: For 492079/492079 co-relation queries the response was YES. [2024-06-27 22:17:00,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45252 conditions, 4426 events. 2459/4426 cut-off events. For 492079/492079 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 30294 event pairs, 195 based on Foata normal form. 1/4181 useless extension candidates. Maximal degree in co-relation 45006. Up to 3242 conditions per place. [2024-06-27 22:17:00,815 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1059 selfloop transitions, 425 changer transitions 0/1492 dead transitions. [2024-06-27 22:17:00,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1492 transitions, 34042 flow [2024-06-27 22:17:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:17:00,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:17:00,816 INFO L175 Difference]: Start difference. First operand has 611 places, 1451 transitions, 29772 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:17:00,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1492 transitions, 34042 flow [2024-06-27 22:17:06,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1492 transitions, 33122 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:17:06,081 INFO L231 Difference]: Finished difference. Result has 612 places, 1463 transitions, 29926 flow [2024-06-27 22:17:06,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=28876, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29926, PETRI_PLACES=612, PETRI_TRANSITIONS=1463} [2024-06-27 22:17:06,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 570 predicate places. [2024-06-27 22:17:06,083 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 1463 transitions, 29926 flow [2024-06-27 22:17:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:06,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:06,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:06,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:17:06,084 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:06,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash -454338590, now seen corresponding path program 30 times [2024-06-27 22:17:06,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:06,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093736321] [2024-06-27 22:17:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093736321] [2024-06-27 22:17:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093736321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459220623] [2024-06-27 22:17:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:08,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:08,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1463 transitions, 29926 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:08,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:08,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:08,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:10,635 INFO L124 PetriNetUnfolderBase]: 2466/4439 cut-off events. [2024-06-27 22:17:10,635 INFO L125 PetriNetUnfolderBase]: For 497307/497307 co-relation queries the response was YES. [2024-06-27 22:17:10,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45361 conditions, 4439 events. 2466/4439 cut-off events. For 497307/497307 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 30400 event pairs, 195 based on Foata normal form. 1/4194 useless extension candidates. Maximal degree in co-relation 45114. Up to 3252 conditions per place. [2024-06-27 22:17:10,732 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1045 selfloop transitions, 442 changer transitions 0/1495 dead transitions. [2024-06-27 22:17:10,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1495 transitions, 34005 flow [2024-06-27 22:17:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:17:10,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:17:10,733 INFO L175 Difference]: Start difference. First operand has 612 places, 1463 transitions, 29926 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:17:10,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1495 transitions, 34005 flow [2024-06-27 22:17:16,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1495 transitions, 33191 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:16,563 INFO L231 Difference]: Finished difference. Result has 616 places, 1469 transitions, 30116 flow [2024-06-27 22:17:16,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=29142, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1027, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30116, PETRI_PLACES=616, PETRI_TRANSITIONS=1469} [2024-06-27 22:17:16,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 574 predicate places. [2024-06-27 22:17:16,564 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 1469 transitions, 30116 flow [2024-06-27 22:17:16,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:16,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:16,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:16,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:17:16,565 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:16,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:16,565 INFO L85 PathProgramCache]: Analyzing trace with hash -454540400, now seen corresponding path program 31 times [2024-06-27 22:17:16,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:16,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798577717] [2024-06-27 22:17:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:16,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:18,668 INFO 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 22:17:18,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:18,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798577717] [2024-06-27 22:17:18,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798577717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163564618] [2024-06-27 22:17:18,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:18,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:18,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:18,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 1469 transitions, 30116 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:18,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:18,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:18,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:21,345 INFO L124 PetriNetUnfolderBase]: 2464/4436 cut-off events. [2024-06-27 22:17:21,345 INFO L125 PetriNetUnfolderBase]: For 489818/489818 co-relation queries the response was YES. [2024-06-27 22:17:21,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45201 conditions, 4436 events. 2464/4436 cut-off events. For 489818/489818 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 30379 event pairs, 195 based on Foata normal form. 1/4191 useless extension candidates. Maximal degree in co-relation 44953. Up to 3250 conditions per place. [2024-06-27 22:17:21,427 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1065 selfloop transitions, 426 changer transitions 0/1499 dead transitions. [2024-06-27 22:17:21,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1499 transitions, 33935 flow [2024-06-27 22:17:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:17:21,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:17:21,428 INFO L175 Difference]: Start difference. First operand has 616 places, 1469 transitions, 30116 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:17:21,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1499 transitions, 33935 flow [2024-06-27 22:17:26,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 1499 transitions, 33128 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:26,061 INFO L231 Difference]: Finished difference. Result has 619 places, 1469 transitions, 30177 flow [2024-06-27 22:17:26,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=29309, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1043, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30177, PETRI_PLACES=619, PETRI_TRANSITIONS=1469} [2024-06-27 22:17:26,062 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 577 predicate places. [2024-06-27 22:17:26,062 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 1469 transitions, 30177 flow [2024-06-27 22:17:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:26,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:26,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:17:26,063 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:26,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash -454338373, now seen corresponding path program 24 times [2024-06-27 22:17:26,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:26,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091157820] [2024-06-27 22:17:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:27,838 INFO 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 22:17:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091157820] [2024-06-27 22:17:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091157820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:27,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488090045] [2024-06-27 22:17:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:27,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:27,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:27,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:27,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1469 transitions, 30177 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:27,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:27,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:27,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:30,505 INFO L124 PetriNetUnfolderBase]: 2533/4551 cut-off events. [2024-06-27 22:17:30,505 INFO L125 PetriNetUnfolderBase]: For 524918/524918 co-relation queries the response was YES. [2024-06-27 22:17:30,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46726 conditions, 4551 events. 2533/4551 cut-off events. For 524918/524918 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 31283 event pairs, 186 based on Foata normal form. 2/4297 useless extension candidates. Maximal degree in co-relation 46477. Up to 3142 conditions per place. [2024-06-27 22:17:30,607 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 950 selfloop transitions, 600 changer transitions 0/1558 dead transitions. [2024-06-27 22:17:30,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1558 transitions, 35821 flow [2024-06-27 22:17:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:17:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:17:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 256 transitions. [2024-06-27 22:17:30,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2024-06-27 22:17:30,608 INFO L175 Difference]: Start difference. First operand has 619 places, 1469 transitions, 30177 flow. Second operand 15 states and 256 transitions. [2024-06-27 22:17:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 1558 transitions, 35821 flow [2024-06-27 22:17:36,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 1558 transitions, 34845 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:17:36,059 INFO L231 Difference]: Finished difference. Result has 623 places, 1520 transitions, 31486 flow [2024-06-27 22:17:36,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=29201, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=31486, PETRI_PLACES=623, PETRI_TRANSITIONS=1520} [2024-06-27 22:17:36,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 581 predicate places. [2024-06-27 22:17:36,060 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 1520 transitions, 31486 flow [2024-06-27 22:17:36,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:36,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:36,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:17:36,060 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:36,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash -454330933, now seen corresponding path program 25 times [2024-06-27 22:17:36,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:36,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675884990] [2024-06-27 22:17:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:37,726 INFO 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 22:17:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:37,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675884990] [2024-06-27 22:17:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675884990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:37,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:37,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892167508] [2024-06-27 22:17:37,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:37,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:37,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 1520 transitions, 31486 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:37,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:37,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:37,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:40,546 INFO L124 PetriNetUnfolderBase]: 2536/4556 cut-off events. [2024-06-27 22:17:40,546 INFO L125 PetriNetUnfolderBase]: For 516945/516945 co-relation queries the response was YES. [2024-06-27 22:17:40,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46996 conditions, 4556 events. 2536/4556 cut-off events. For 516945/516945 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 31293 event pairs, 200 based on Foata normal form. 2/4299 useless extension candidates. Maximal degree in co-relation 46746. Up to 2929 conditions per place. [2024-06-27 22:17:40,644 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 854 selfloop transitions, 695 changer transitions 0/1557 dead transitions. [2024-06-27 22:17:40,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1557 transitions, 35726 flow [2024-06-27 22:17:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:17:40,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:17:40,645 INFO L175 Difference]: Start difference. First operand has 623 places, 1520 transitions, 31486 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:17:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 1557 transitions, 35726 flow [2024-06-27 22:17:46,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 1557 transitions, 34665 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:46,066 INFO L231 Difference]: Finished difference. Result has 630 places, 1530 transitions, 32426 flow [2024-06-27 22:17:46,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=30322, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=682, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=830, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32426, PETRI_PLACES=630, PETRI_TRANSITIONS=1530} [2024-06-27 22:17:46,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 588 predicate places. [2024-06-27 22:17:46,068 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1530 transitions, 32426 flow [2024-06-27 22:17:46,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:46,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:46,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:17:46,068 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:46,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -454540183, now seen corresponding path program 26 times [2024-06-27 22:17:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:46,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624000050] [2024-06-27 22:17:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:47,776 INFO 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 22:17:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624000050] [2024-06-27 22:17:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624000050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:47,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181888672] [2024-06-27 22:17:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:47,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:47,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:47,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:47,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:47,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:47,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1530 transitions, 32426 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:47,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:47,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:47,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:50,559 INFO L124 PetriNetUnfolderBase]: 2531/4547 cut-off events. [2024-06-27 22:17:50,559 INFO L125 PetriNetUnfolderBase]: For 512878/512878 co-relation queries the response was YES. [2024-06-27 22:17:50,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47797 conditions, 4547 events. 2531/4547 cut-off events. For 512878/512878 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 31220 event pairs, 186 based on Foata normal form. 2/4289 useless extension candidates. Maximal degree in co-relation 47544. Up to 3144 conditions per place. [2024-06-27 22:17:50,648 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 967 selfloop transitions, 589 changer transitions 0/1564 dead transitions. [2024-06-27 22:17:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1564 transitions, 36357 flow [2024-06-27 22:17:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:17:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:17:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 251 transitions. [2024-06-27 22:17:50,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44035087719298244 [2024-06-27 22:17:50,650 INFO L175 Difference]: Start difference. First operand has 630 places, 1530 transitions, 32426 flow. Second operand 15 states and 251 transitions. [2024-06-27 22:17:50,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1564 transitions, 36357 flow [2024-06-27 22:17:56,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 1564 transitions, 35568 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:56,400 INFO L231 Difference]: Finished difference. Result has 640 places, 1527 transitions, 32764 flow [2024-06-27 22:17:56,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=31570, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=589, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=938, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=32764, PETRI_PLACES=640, PETRI_TRANSITIONS=1527} [2024-06-27 22:17:56,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 598 predicate places. [2024-06-27 22:17:56,401 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 1527 transitions, 32764 flow [2024-06-27 22:17:56,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:56,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:56,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:17:56,402 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:56,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2059600654, now seen corresponding path program 32 times [2024-06-27 22:17:56,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:56,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936906026] [2024-06-27 22:17:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:58,514 INFO 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 22:17:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936906026] [2024-06-27 22:17:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936906026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447690796] [2024-06-27 22:17:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:58,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:58,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:17:58,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 1527 transitions, 32764 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:58,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:58,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:17:58,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:01,153 INFO L124 PetriNetUnfolderBase]: 2542/4565 cut-off events. [2024-06-27 22:18:01,153 INFO L125 PetriNetUnfolderBase]: For 524205/524205 co-relation queries the response was YES. [2024-06-27 22:18:01,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47921 conditions, 4565 events. 2542/4565 cut-off events. For 524205/524205 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 31323 event pairs, 163 based on Foata normal form. 1/4306 useless extension candidates. Maximal degree in co-relation 47667. Up to 3373 conditions per place. [2024-06-27 22:18:01,258 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1047 selfloop transitions, 504 changer transitions 0/1559 dead transitions. [2024-06-27 22:18:01,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 1559 transitions, 36595 flow [2024-06-27 22:18:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:18:01,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:18:01,260 INFO L175 Difference]: Start difference. First operand has 640 places, 1527 transitions, 32764 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:18:01,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 1559 transitions, 36595 flow [2024-06-27 22:18:07,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 1559 transitions, 35489 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-27 22:18:07,909 INFO L231 Difference]: Finished difference. Result has 638 places, 1538 transitions, 32840 flow [2024-06-27 22:18:07,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=31658, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32840, PETRI_PLACES=638, PETRI_TRANSITIONS=1538} [2024-06-27 22:18:07,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 596 predicate places. [2024-06-27 22:18:07,910 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 1538 transitions, 32840 flow [2024-06-27 22:18:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:07,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:07,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:18:07,911 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1197752677, now seen corresponding path program 27 times [2024-06-27 22:18:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784400419] [2024-06-27 22:18:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:09,736 INFO 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 22:18:09,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784400419] [2024-06-27 22:18:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784400419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:09,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:09,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898959847] [2024-06-27 22:18:09,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:09,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:18:09,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 1538 transitions, 32840 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:09,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:09,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:18:09,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:12,683 INFO L124 PetriNetUnfolderBase]: 2605/4671 cut-off events. [2024-06-27 22:18:12,683 INFO L125 PetriNetUnfolderBase]: For 546709/546709 co-relation queries the response was YES. [2024-06-27 22:18:12,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48970 conditions, 4671 events. 2605/4671 cut-off events. For 546709/546709 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 32115 event pairs, 163 based on Foata normal form. 2/4400 useless extension candidates. Maximal degree in co-relation 48715. Up to 3238 conditions per place. [2024-06-27 22:18:12,783 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 953 selfloop transitions, 661 changer transitions 0/1622 dead transitions. [2024-06-27 22:18:12,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 1622 transitions, 38238 flow [2024-06-27 22:18:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:18:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:18:12,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 249 transitions. [2024-06-27 22:18:12,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:18:12,785 INFO L175 Difference]: Start difference. First operand has 638 places, 1538 transitions, 32840 flow. Second operand 15 states and 249 transitions. [2024-06-27 22:18:12,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 1622 transitions, 38238 flow [2024-06-27 22:18:18,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 1622 transitions, 37599 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:18,294 INFO L231 Difference]: Finished difference. Result has 647 places, 1590 transitions, 34652 flow [2024-06-27 22:18:18,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=32201, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=929, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=34652, PETRI_PLACES=647, PETRI_TRANSITIONS=1590} [2024-06-27 22:18:18,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 605 predicate places. [2024-06-27 22:18:18,296 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 1590 transitions, 34652 flow [2024-06-27 22:18:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:18,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:18:18,296 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:18,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1205104327, now seen corresponding path program 28 times [2024-06-27 22:18:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086231859] [2024-06-27 22:18:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:20,123 INFO 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 22:18:20,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086231859] [2024-06-27 22:18:20,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086231859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:20,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:20,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855771821] [2024-06-27 22:18:20,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:20,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:18:20,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1590 transitions, 34652 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:20,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:20,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:18:20,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:23,124 INFO L124 PetriNetUnfolderBase]: 2624/4703 cut-off events. [2024-06-27 22:18:23,124 INFO L125 PetriNetUnfolderBase]: For 556785/556785 co-relation queries the response was YES. [2024-06-27 22:18:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49914 conditions, 4703 events. 2624/4703 cut-off events. For 556785/556785 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 32352 event pairs, 163 based on Foata normal form. 2/4429 useless extension candidates. Maximal degree in co-relation 49658. Up to 3259 conditions per place. [2024-06-27 22:18:23,223 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 969 selfloop transitions, 660 changer transitions 0/1637 dead transitions. [2024-06-27 22:18:23,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1637 transitions, 39063 flow [2024-06-27 22:18:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:18:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:18:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 247 transitions. [2024-06-27 22:18:23,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 22:18:23,225 INFO L175 Difference]: Start difference. First operand has 647 places, 1590 transitions, 34652 flow. Second operand 15 states and 247 transitions. [2024-06-27 22:18:23,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 1637 transitions, 39063 flow [2024-06-27 22:18:29,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 1637 transitions, 38109 flow, removed 121 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:29,310 INFO L231 Difference]: Finished difference. Result has 655 places, 1604 transitions, 35372 flow [2024-06-27 22:18:29,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=33747, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=35372, PETRI_PLACES=655, PETRI_TRANSITIONS=1604} [2024-06-27 22:18:29,311 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 613 predicate places. [2024-06-27 22:18:29,311 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 1604 transitions, 35372 flow [2024-06-27 22:18:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:29,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:29,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:29,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:18:29,312 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:29,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1205104544, now seen corresponding path program 33 times [2024-06-27 22:18:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204109879] [2024-06-27 22:18:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204109879] [2024-06-27 22:18:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204109879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:31,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:31,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711137147] [2024-06-27 22:18:31,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:31,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:31,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:18:31,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 1604 transitions, 35372 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:31,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:31,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:18:31,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:34,322 INFO L124 PetriNetUnfolderBase]: 2640/4731 cut-off events. [2024-06-27 22:18:34,322 INFO L125 PetriNetUnfolderBase]: For 579297/579297 co-relation queries the response was YES. [2024-06-27 22:18:34,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50424 conditions, 4731 events. 2640/4731 cut-off events. For 579297/579297 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 32589 event pairs, 163 based on Foata normal form. 1/4456 useless extension candidates. Maximal degree in co-relation 50167. Up to 3526 conditions per place. [2024-06-27 22:18:34,410 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 1177 selfloop transitions, 458 changer transitions 0/1643 dead transitions. [2024-06-27 22:18:34,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 1643 transitions, 39922 flow [2024-06-27 22:18:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:18:34,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:18:34,412 INFO L175 Difference]: Start difference. First operand has 655 places, 1604 transitions, 35372 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:18:34,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 1643 transitions, 39922 flow [2024-06-27 22:18:41,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 1643 transitions, 38854 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:41,277 INFO L231 Difference]: Finished difference. Result has 657 places, 1616 transitions, 35429 flow [2024-06-27 22:18:41,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=34304, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=35429, PETRI_PLACES=657, PETRI_TRANSITIONS=1616} [2024-06-27 22:18:41,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 615 predicate places. [2024-06-27 22:18:41,278 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 1616 transitions, 35429 flow [2024-06-27 22:18:41,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:41,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:41,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:41,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:18:41,279 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:41,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1197745237, now seen corresponding path program 29 times [2024-06-27 22:18:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:41,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069513714] [2024-06-27 22:18:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069513714] [2024-06-27 22:18:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069513714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196886493] [2024-06-27 22:18:42,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:43,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:18:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 1616 transitions, 35429 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:18:43,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:45,962 INFO L124 PetriNetUnfolderBase]: 2661/4767 cut-off events. [2024-06-27 22:18:45,962 INFO L125 PetriNetUnfolderBase]: For 586060/586060 co-relation queries the response was YES. [2024-06-27 22:18:46,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50447 conditions, 4767 events. 2661/4767 cut-off events. For 586060/586060 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 32876 event pairs, 163 based on Foata normal form. 2/4489 useless extension candidates. Maximal degree in co-relation 50189. Up to 3090 conditions per place. [2024-06-27 22:18:46,082 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 898 selfloop transitions, 755 changer transitions 0/1661 dead transitions. [2024-06-27 22:18:46,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 1661 transitions, 40160 flow [2024-06-27 22:18:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:18:46,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:18:46,083 INFO L175 Difference]: Start difference. First operand has 657 places, 1616 transitions, 35429 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:18:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 1661 transitions, 40160 flow [2024-06-27 22:18:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 658 places, 1661 transitions, 38994 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:53,924 INFO L231 Difference]: Finished difference. Result has 659 places, 1629 transitions, 36103 flow [2024-06-27 22:18:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=34276, PETRI_DIFFERENCE_MINUEND_PLACES=648, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=36103, PETRI_PLACES=659, PETRI_TRANSITIONS=1629} [2024-06-27 22:18:53,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 617 predicate places. [2024-06-27 22:18:53,926 INFO L495 AbstractCegarLoop]: Abstraction has has 659 places, 1629 transitions, 36103 flow [2024-06-27 22:18:53,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:53,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:53,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:18:53,926 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:53,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1197475847, now seen corresponding path program 6 times [2024-06-27 22:18:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294510413] [2024-06-27 22:18:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294510413] [2024-06-27 22:18:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294510413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:18:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803698761] [2024-06-27 22:18:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:56,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:18:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:56,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:18:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:18:56,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:18:56,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 1629 transitions, 36103 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:56,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:56,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:18:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:59,372 INFO L124 PetriNetUnfolderBase]: 2617/4752 cut-off events. [2024-06-27 22:18:59,372 INFO L125 PetriNetUnfolderBase]: For 592862/592871 co-relation queries the response was YES. [2024-06-27 22:18:59,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50182 conditions, 4752 events. 2617/4752 cut-off events. For 592862/592871 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 33295 event pairs, 221 based on Foata normal form. 8/4473 useless extension candidates. Maximal degree in co-relation 49923. Up to 3967 conditions per place. [2024-06-27 22:18:59,486 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 1420 selfloop transitions, 66 changer transitions 0/1655 dead transitions. [2024-06-27 22:18:59,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1655 transitions, 39367 flow [2024-06-27 22:18:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:18:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:18:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 22:18:59,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:18:59,488 INFO L175 Difference]: Start difference. First operand has 659 places, 1629 transitions, 36103 flow. Second operand 12 states and 198 transitions. [2024-06-27 22:18:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 1655 transitions, 39367 flow [2024-06-27 22:19:07,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 1655 transitions, 38223 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:07,739 INFO L231 Difference]: Finished difference. Result has 664 places, 1631 transitions, 35135 flow [2024-06-27 22:19:07,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=34959, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35135, PETRI_PLACES=664, PETRI_TRANSITIONS=1631} [2024-06-27 22:19:07,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 622 predicate places. [2024-06-27 22:19:07,740 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 1631 transitions, 35135 flow [2024-06-27 22:19:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:07,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:07,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:19:07,741 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:07,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1205110279, now seen corresponding path program 12 times [2024-06-27 22:19:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454254801] [2024-06-27 22:19:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:09,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454254801] [2024-06-27 22:19:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454254801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:09,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386639079] [2024-06-27 22:19:09,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:09,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:09,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:09,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:19:09,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 1631 transitions, 35135 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:09,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:09,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:19:09,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:11,535 INFO L124 PetriNetUnfolderBase]: 2542/4665 cut-off events. [2024-06-27 22:19:11,536 INFO L125 PetriNetUnfolderBase]: For 545667/545695 co-relation queries the response was YES. [2024-06-27 22:19:11,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47529 conditions, 4665 events. 2542/4665 cut-off events. For 545667/545695 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 33069 event pairs, 202 based on Foata normal form. 1/4381 useless extension candidates. Maximal degree in co-relation 47269. Up to 3714 conditions per place. [2024-06-27 22:19:11,635 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 1341 selfloop transitions, 246 changer transitions 0/1644 dead transitions. [2024-06-27 22:19:11,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 1644 transitions, 38379 flow [2024-06-27 22:19:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:19:11,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-27 22:19:11,636 INFO L175 Difference]: Start difference. First operand has 664 places, 1631 transitions, 35135 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:19:11,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 1644 transitions, 38379 flow [2024-06-27 22:19:17,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 1644 transitions, 38249 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:19:17,346 INFO L231 Difference]: Finished difference. Result has 664 places, 1633 transitions, 35559 flow [2024-06-27 22:19:17,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=35005, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35559, PETRI_PLACES=664, PETRI_TRANSITIONS=1633} [2024-06-27 22:19:17,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 622 predicate places. [2024-06-27 22:19:17,347 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 1633 transitions, 35559 flow [2024-06-27 22:19:17,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:17,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:17,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:19:17,347 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:17,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 605297671, now seen corresponding path program 30 times [2024-06-27 22:19:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093340681] [2024-06-27 22:19:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093340681] [2024-06-27 22:19:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093340681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117005830] [2024-06-27 22:19:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:19,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:19:19,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 1633 transitions, 35559 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:19,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:19,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:19:19,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,181 INFO L124 PetriNetUnfolderBase]: 2666/4797 cut-off events. [2024-06-27 22:19:22,181 INFO L125 PetriNetUnfolderBase]: For 542493/542493 co-relation queries the response was YES. [2024-06-27 22:19:22,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49344 conditions, 4797 events. 2666/4797 cut-off events. For 542493/542493 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 33211 event pairs, 167 based on Foata normal form. 2/4514 useless extension candidates. Maximal degree in co-relation 49083. Up to 3106 conditions per place. [2024-06-27 22:19:22,288 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 851 selfloop transitions, 797 changer transitions 0/1656 dead transitions. [2024-06-27 22:19:22,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 1656 transitions, 39442 flow [2024-06-27 22:19:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:19:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:19:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:19:22,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 22:19:22,290 INFO L175 Difference]: Start difference. First operand has 664 places, 1633 transitions, 35559 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:19:22,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 1656 transitions, 39442 flow [2024-06-27 22:19:28,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 1656 transitions, 38910 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:28,193 INFO L231 Difference]: Finished difference. Result has 668 places, 1630 transitions, 36573 flow [2024-06-27 22:19:28,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=34954, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=36573, PETRI_PLACES=668, PETRI_TRANSITIONS=1630} [2024-06-27 22:19:28,194 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 626 predicate places. [2024-06-27 22:19:28,194 INFO L495 AbstractCegarLoop]: Abstraction has has 668 places, 1630 transitions, 36573 flow [2024-06-27 22:19:28,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:28,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:28,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:19:28,195 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:28,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 597888361, now seen corresponding path program 31 times [2024-06-27 22:19:28,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:28,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185703315] [2024-06-27 22:19:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:28,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:29,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:29,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185703315] [2024-06-27 22:19:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185703315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:29,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819665625] [2024-06-27 22:19:29,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:29,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:29,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:30,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 22:19:30,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1630 transitions, 36573 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:30,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:30,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 22:19:30,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:32,818 INFO L124 PetriNetUnfolderBase]: 2685/4829 cut-off events. [2024-06-27 22:19:32,818 INFO L125 PetriNetUnfolderBase]: For 550902/550902 co-relation queries the response was YES. [2024-06-27 22:19:32,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50695 conditions, 4829 events. 2685/4829 cut-off events. For 550902/550902 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 33455 event pairs, 167 based on Foata normal form. 2/4543 useless extension candidates. Maximal degree in co-relation 50433. Up to 3127 conditions per place. [2024-06-27 22:19:32,924 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 924 selfloop transitions, 743 changer transitions 0/1675 dead transitions. [2024-06-27 22:19:32,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 1675 transitions, 41084 flow [2024-06-27 22:19:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:19:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:19:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:19:32,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:19:32,926 INFO L175 Difference]: Start difference. First operand has 668 places, 1630 transitions, 36573 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:19:32,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 1675 transitions, 41084 flow [2024-06-27 22:19:39,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 1675 transitions, 39679 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:19:39,054 INFO L231 Difference]: Finished difference. Result has 670 places, 1641 transitions, 36951 flow [2024-06-27 22:19:39,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=35191, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=36951, PETRI_PLACES=670, PETRI_TRANSITIONS=1641} [2024-06-27 22:19:39,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 628 predicate places. [2024-06-27 22:19:39,055 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 1641 transitions, 36951 flow [2024-06-27 22:19:39,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:39,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:39,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:39,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:19:39,056 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:39,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:39,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1204902734, now seen corresponding path program 34 times [2024-06-27 22:19:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810752568] [2024-06-27 22:19:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:39,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15