./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:19:14,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:19:14,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:19:14,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:19:14,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:19:14,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:19:14,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:19:14,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:19:14,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:19:14,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:19:14,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:19:14,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:19:14,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:19:14,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:19:14,275 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:19:14,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:19:14,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:19:14,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:19:14,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:19:14,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:19:14,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:19:14,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:19:14,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:19:14,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:19:14,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:19:14,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:19:14,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:19:14,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:19:14,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:19:14,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:19:14,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:19:14,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:19:14,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:19:14,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:19:14,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:19:14,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:19:14,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:19:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:19:14,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:19:14,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:19:14,283 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:19:14,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:19:14,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:19:14,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:19:14,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:19:14,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:19:14,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:19:14,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:19:14,553 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:19:14,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-27 22:19:15,727 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:19:15,967 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:19:15,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_pso.opt_tso.opt.i [2024-06-27 22:19:15,986 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/783732bd7/311a191abf5f42b2a1e92a25d66fb710/FLAG7c0242284 [2024-06-27 22:19:15,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/783732bd7/311a191abf5f42b2a1e92a25d66fb710 [2024-06-27 22:19:16,000 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:19:16,001 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:19:16,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_pso.opt_tso.opt.yml/witness.yml [2024-06-27 22:19:16,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:19:16,089 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:19:16,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:19:16,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:19:16,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:19:16,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:19:15" (1/2) ... [2024-06-27 22:19:16,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32285120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:19:16, skipping insertion in model container [2024-06-27 22:19:16,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:19:15" (1/2) ... [2024-06-27 22:19:16,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6347a296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:19:16, skipping insertion in model container [2024-06-27 22:19:16,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:16" (2/2) ... [2024-06-27 22:19:16,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32285120 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16, skipping insertion in model container [2024-06-27 22:19:16,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:16" (2/2) ... [2024-06-27 22:19:16,100 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:19:16,127 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:19:16,128 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:19:16,129 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:19:16,129 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:19:16,129 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-27 22:19:16,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:19:16,409 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/mix034_pso.opt_tso.opt.i[999,1012] [2024-06-27 22:19:16,602 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:19:16,611 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:19:16,651 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/mix034_pso.opt_tso.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:19:16,746 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:19:16,778 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:19:16,779 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16 WrapperNode [2024-06-27 22:19:16,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:19:16,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:19:16,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:19:16,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:19:16,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,867 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-06-27 22:19:16,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:19:16,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:19:16,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:19:16,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:19:16,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,900 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,919 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 22:19:16,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:19:16,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:19:16,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:19:16,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:19:16,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (1/1) ... [2024-06-27 22:19:16,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:19:16,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:19:16,998 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 22:19:17,017 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 22:19:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:19:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:19:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:19:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:19:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:19:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:19:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:19:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:19:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:19:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:19:17,036 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 22:19:17,165 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:19:17,166 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:19:17,547 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:19:17,548 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:19:17,730 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:19:17,731 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:19:17,731 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:19:17 BoogieIcfgContainer [2024-06-27 22:19:17,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:19:17,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:19:17,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:19:17,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:19:17,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:19:15" (1/4) ... [2024-06-27 22:19:17,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc4af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:19:17, skipping insertion in model container [2024-06-27 22:19:17,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:19:16" (2/4) ... [2024-06-27 22:19:17,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc4af0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:19:17, skipping insertion in model container [2024-06-27 22:19:17,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:19:16" (3/4) ... [2024-06-27 22:19:17,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc4af0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:19:17, skipping insertion in model container [2024-06-27 22:19:17,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:19:17" (4/4) ... [2024-06-27 22:19:17,742 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_pso.opt_tso.opt.i [2024-06-27 22:19:17,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:19:17,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:19:17,760 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:19:17,820 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:19:17,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:19:17,888 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:19:17,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:19:17,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 22:19:17,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:19:17,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:19:17,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:19:17,922 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;@4a8c5284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:19:17,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:19:17,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:19:17,930 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:19:17,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:19:17,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:19:17,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:17,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 307960714, now seen corresponding path program 1 times [2024-06-27 22:19:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413376332] [2024-06-27 22:19:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:19,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413376332] [2024-06-27 22:19:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413376332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:19:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013879068] [2024-06-27 22:19:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:19:19,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:19:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:19:19,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 22:19:19,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 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 22:19:19,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:19,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 22:19:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:19,648 INFO L124 PetriNetUnfolderBase]: 372/760 cut-off events. [2024-06-27 22:19:19,648 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:19:19,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 760 events. 372/760 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4260 event pairs, 284 based on Foata normal form. 30/712 useless extension candidates. Maximal degree in co-relation 1394. Up to 620 conditions per place. [2024-06-27 22:19:19,659 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:19:19,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 161 flow [2024-06-27 22:19:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:19:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:19:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 22:19:19,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 22:19:19,673 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 22:19:19,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 161 flow [2024-06-27 22:19:19,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:19,679 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:19:19,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:19:19,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:19:19,685 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:19:19,685 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 22:19:19,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:19,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:19:19,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:19,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash -402458967, now seen corresponding path program 1 times [2024-06-27 22:19:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:19,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22548347] [2024-06-27 22:19:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:20,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:20,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22548347] [2024-06-27 22:19:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22548347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:20,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:19:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132421316] [2024-06-27 22:19:20,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:20,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:19:20,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:20,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:19:20,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:19:20,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:19:20,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:20,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:20,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:19:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:20,757 INFO L124 PetriNetUnfolderBase]: 414/757 cut-off events. [2024-06-27 22:19:20,758 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-06-27 22:19:20,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 757 events. 414/757 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3850 event pairs, 181 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 1618. Up to 671 conditions per place. [2024-06-27 22:19:20,764 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 38 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-27 22:19:20,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 223 flow [2024-06-27 22:19:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:19:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:19:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-27 22:19:20,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-06-27 22:19:20,768 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 98 transitions. [2024-06-27 22:19:20,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 223 flow [2024-06-27 22:19:20,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:20,772 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 121 flow [2024-06-27 22:19:20,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 22:19:20,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 22:19:20,773 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 121 flow [2024-06-27 22:19:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:20,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:20,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:19:20,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:20,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash 408675169, now seen corresponding path program 1 times [2024-06-27 22:19:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:20,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090697777] [2024-06-27 22:19:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:20,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090697777] [2024-06-27 22:19:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090697777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:22,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:22,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:19:22,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660040145] [2024-06-27 22:19:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:19:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:19:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:19:22,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:19:22,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 121 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 22:19:22,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:22,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:19:22,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,513 INFO L124 PetriNetUnfolderBase]: 398/722 cut-off events. [2024-06-27 22:19:22,513 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2024-06-27 22:19:22,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 722 events. 398/722 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3604 event pairs, 80 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 1689. Up to 629 conditions per place. [2024-06-27 22:19:22,518 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 46 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-27 22:19:22,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 289 flow [2024-06-27 22:19:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:19:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:19:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 22:19:22,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654054054054054 [2024-06-27 22:19:22,524 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 121 flow. Second operand 5 states and 121 transitions. [2024-06-27 22:19:22,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 289 flow [2024-06-27 22:19:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 280 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:22,527 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 147 flow [2024-06-27 22:19:22,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-27 22:19:22,528 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 22:19:22,528 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 147 flow [2024-06-27 22:19:22,529 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 22:19:22,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:22,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:22,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:19:22,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:22,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash -682958130, now seen corresponding path program 1 times [2024-06-27 22:19:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020091275] [2024-06-27 22:19:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:22,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020091275] [2024-06-27 22:19:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020091275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:24,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324015999] [2024-06-27 22:19:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:24,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:19:24,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 147 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 22:19:24,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:24,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:19:24,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:24,663 INFO L124 PetriNetUnfolderBase]: 375/740 cut-off events. [2024-06-27 22:19:24,664 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2024-06-27 22:19:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 740 events. 375/740 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3873 event pairs, 125 based on Foata normal form. 4/711 useless extension candidates. Maximal degree in co-relation 1739. Up to 554 conditions per place. [2024-06-27 22:19:24,669 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 44 selfloop transitions, 8 changer transitions 5/68 dead transitions. [2024-06-27 22:19:24,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 311 flow [2024-06-27 22:19:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 22:19:24,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 22:19:24,672 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 147 flow. Second operand 6 states and 138 transitions. [2024-06-27 22:19:24,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 311 flow [2024-06-27 22:19:24,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 296 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:24,677 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 134 flow [2024-06-27 22:19:24,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2024-06-27 22:19:24,678 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-06-27 22:19:24,679 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 134 flow [2024-06-27 22:19:24,679 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 22:19:24,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:24,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:24,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:19:24,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:24,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1079448319, now seen corresponding path program 1 times [2024-06-27 22:19:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966109988] [2024-06-27 22:19:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:25,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:25,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966109988] [2024-06-27 22:19:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966109988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:19:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423712913] [2024-06-27 22:19:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:25,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:19:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:19:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:19:25,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:25,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:25,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:25,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:25,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:25,934 INFO L124 PetriNetUnfolderBase]: 373/759 cut-off events. [2024-06-27 22:19:25,934 INFO L125 PetriNetUnfolderBase]: For 615/615 co-relation queries the response was YES. [2024-06-27 22:19:25,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 759 events. 373/759 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4030 event pairs, 128 based on Foata normal form. 1/733 useless extension candidates. Maximal degree in co-relation 1801. Up to 614 conditions per place. [2024-06-27 22:19:25,941 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 34 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-27 22:19:25,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 274 flow [2024-06-27 22:19:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:19:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:19:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-27 22:19:25,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 22:19:25,943 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 134 flow. Second operand 5 states and 94 transitions. [2024-06-27 22:19:25,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 274 flow [2024-06-27 22:19:25,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 248 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:25,949 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 189 flow [2024-06-27 22:19:25,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:19:25,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 22:19:25,954 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 189 flow [2024-06-27 22:19:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:25,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:25,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:19:25,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash -896839634, now seen corresponding path program 1 times [2024-06-27 22:19:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100277490] [2024-06-27 22:19:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:27,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:27,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100277490] [2024-06-27 22:19:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100277490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16988063] [2024-06-27 22:19:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:27,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:27,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 189 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 22:19:27,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:27,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:27,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:27,484 INFO L124 PetriNetUnfolderBase]: 429/849 cut-off events. [2024-06-27 22:19:27,485 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2024-06-27 22:19:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 849 events. 429/849 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4525 event pairs, 147 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 2129. Up to 697 conditions per place. [2024-06-27 22:19:27,491 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 38 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-27 22:19:27,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 327 flow [2024-06-27 22:19:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 22:19:27,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:19:27,492 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 189 flow. Second operand 6 states and 106 transitions. [2024-06-27 22:19:27,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 327 flow [2024-06-27 22:19:27,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 325 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:19:27,496 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 237 flow [2024-06-27 22:19:27,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-27 22:19:27,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-27 22:19:27,499 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 237 flow [2024-06-27 22:19:27,499 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 22:19:27,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:27,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:27,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:19:27,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:27,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2032470080, now seen corresponding path program 1 times [2024-06-27 22:19:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:27,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609675393] [2024-06-27 22:19:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:27,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:28,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609675393] [2024-06-27 22:19:28,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609675393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:28,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:28,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344367790] [2024-06-27 22:19:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:28,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:28,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:28,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:28,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:28,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:28,943 INFO L124 PetriNetUnfolderBase]: 414/865 cut-off events. [2024-06-27 22:19:28,943 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-06-27 22:19:28,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 865 events. 414/865 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4739 event pairs, 133 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 2300. Up to 652 conditions per place. [2024-06-27 22:19:28,949 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 44 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-27 22:19:28,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 443 flow [2024-06-27 22:19:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-27 22:19:28,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:19:28,951 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 237 flow. Second operand 6 states and 114 transitions. [2024-06-27 22:19:28,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 443 flow [2024-06-27 22:19:28,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 415 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:28,957 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 321 flow [2024-06-27 22:19:28,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-27 22:19:28,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 22:19:28,958 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 321 flow [2024-06-27 22:19:28,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:28,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:28,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:19:28,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:28,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2032232930, now seen corresponding path program 2 times [2024-06-27 22:19:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:28,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279734451] [2024-06-27 22:19:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:30,060 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 22:19:30,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:30,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279734451] [2024-06-27 22:19:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279734451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:30,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:30,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60681713] [2024-06-27 22:19:30,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:30,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:30,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:30,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:30,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:30,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:30,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:30,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:30,466 INFO L124 PetriNetUnfolderBase]: 422/878 cut-off events. [2024-06-27 22:19:30,466 INFO L125 PetriNetUnfolderBase]: For 1734/1734 co-relation queries the response was YES. [2024-06-27 22:19:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 878 events. 422/878 cut-off events. For 1734/1734 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4791 event pairs, 137 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 2515. Up to 642 conditions per place. [2024-06-27 22:19:30,472 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 42 selfloop transitions, 25 changer transitions 0/77 dead transitions. [2024-06-27 22:19:30,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 535 flow [2024-06-27 22:19:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 22:19:30,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-06-27 22:19:30,474 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 321 flow. Second operand 6 states and 115 transitions. [2024-06-27 22:19:30,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 535 flow [2024-06-27 22:19:30,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 521 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-27 22:19:30,479 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 409 flow [2024-06-27 22:19:30,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-27 22:19:30,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 22:19:30,481 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 409 flow [2024-06-27 22:19:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:30,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:30,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:19:30,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1814778082, now seen corresponding path program 3 times [2024-06-27 22:19:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35072514] [2024-06-27 22:19:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:30,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:31,441 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 22:19:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35072514] [2024-06-27 22:19:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35072514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:31,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:19:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875217166] [2024-06-27 22:19:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:31,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:19:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:31,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:19:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:19:31,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:31,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 409 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:31,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:31,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:31,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:31,886 INFO L124 PetriNetUnfolderBase]: 428/887 cut-off events. [2024-06-27 22:19:31,887 INFO L125 PetriNetUnfolderBase]: For 2289/2289 co-relation queries the response was YES. [2024-06-27 22:19:31,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 887 events. 428/887 cut-off events. For 2289/2289 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4846 event pairs, 132 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 2745. Up to 669 conditions per place. [2024-06-27 22:19:31,893 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 54 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-27 22:19:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 653 flow [2024-06-27 22:19:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:19:31,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 22:19:31,898 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 409 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:19:31,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 653 flow [2024-06-27 22:19:31,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 616 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:31,903 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 496 flow [2024-06-27 22:19:31,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-06-27 22:19:31,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 22:19:31,904 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 496 flow [2024-06-27 22:19:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:31,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:31,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:31,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:19:31,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2032224002, now seen corresponding path program 1 times [2024-06-27 22:19:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:31,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053998580] [2024-06-27 22:19:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:33,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053998580] [2024-06-27 22:19:33,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053998580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:33,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:33,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:33,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941845025] [2024-06-27 22:19:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:33,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:33,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:33,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:33,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:33,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 496 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 22:19:33,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:33,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:33,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:33,479 INFO L124 PetriNetUnfolderBase]: 458/917 cut-off events. [2024-06-27 22:19:33,479 INFO L125 PetriNetUnfolderBase]: For 2620/2620 co-relation queries the response was YES. [2024-06-27 22:19:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 917 events. 458/917 cut-off events. For 2620/2620 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4899 event pairs, 141 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 2982. Up to 734 conditions per place. [2024-06-27 22:19:33,487 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 65 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-27 22:19:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 716 flow [2024-06-27 22:19:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 22:19:33,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-27 22:19:33,489 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 496 flow. Second operand 7 states and 122 transitions. [2024-06-27 22:19:33,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 716 flow [2024-06-27 22:19:33,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 666 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:33,497 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 510 flow [2024-06-27 22:19:33,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-27 22:19:33,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 22:19:33,498 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 510 flow [2024-06-27 22:19:33,499 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 22:19:33,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:33,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:19:33,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:33,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1247114258, now seen corresponding path program 1 times [2024-06-27 22:19:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544720844] [2024-06-27 22:19:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:33,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:35,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:35,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544720844] [2024-06-27 22:19:35,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544720844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:35,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123833846] [2024-06-27 22:19:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:35,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:35,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:35,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:35,593 INFO L124 PetriNetUnfolderBase]: 450/927 cut-off events. [2024-06-27 22:19:35,593 INFO L125 PetriNetUnfolderBase]: For 3279/3279 co-relation queries the response was YES. [2024-06-27 22:19:35,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 927 events. 450/927 cut-off events. For 3279/3279 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5076 event pairs, 95 based on Foata normal form. 1/885 useless extension candidates. Maximal degree in co-relation 3126. Up to 664 conditions per place. [2024-06-27 22:19:35,601 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-27 22:19:35,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 832 flow [2024-06-27 22:19:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:19:35,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328185328185329 [2024-06-27 22:19:35,603 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 510 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:19:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 832 flow [2024-06-27 22:19:35,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 790 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:35,610 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 605 flow [2024-06-27 22:19:35,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=605, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-27 22:19:35,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 22:19:35,611 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 605 flow [2024-06-27 22:19:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:35,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:35,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:19:35,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:35,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1247235158, now seen corresponding path program 2 times [2024-06-27 22:19:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23899459] [2024-06-27 22:19:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23899459] [2024-06-27 22:19:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23899459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547216086] [2024-06-27 22:19:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:37,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:37,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 605 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:37,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:37,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:37,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:38,010 INFO L124 PetriNetUnfolderBase]: 460/975 cut-off events. [2024-06-27 22:19:38,011 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-06-27 22:19:38,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 975 events. 460/975 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5484 event pairs, 117 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 3420. Up to 679 conditions per place. [2024-06-27 22:19:38,019 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 33 changer transitions 0/110 dead transitions. [2024-06-27 22:19:38,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 952 flow [2024-06-27 22:19:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:19:38,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:19:38,024 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 605 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:19:38,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 952 flow [2024-06-27 22:19:38,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 904 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:19:38,031 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 784 flow [2024-06-27 22:19:38,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2024-06-27 22:19:38,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 22:19:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 784 flow [2024-06-27 22:19:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:38,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:38,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:38,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:19:38,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1247235375, now seen corresponding path program 1 times [2024-06-27 22:19:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628123329] [2024-06-27 22:19:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628123329] [2024-06-27 22:19:39,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628123329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:39,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:39,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:39,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704745744] [2024-06-27 22:19:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:39,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:39,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 784 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 22:19:39,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:39,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:39,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:39,572 INFO L124 PetriNetUnfolderBase]: 500/1021 cut-off events. [2024-06-27 22:19:39,572 INFO L125 PetriNetUnfolderBase]: For 5096/5096 co-relation queries the response was YES. [2024-06-27 22:19:39,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1021 events. 500/1021 cut-off events. For 5096/5096 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5625 event pairs, 121 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 3812. Up to 783 conditions per place. [2024-06-27 22:19:39,582 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 78 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2024-06-27 22:19:39,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 112 transitions, 1058 flow [2024-06-27 22:19:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 22:19:39,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-27 22:19:39,584 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 784 flow. Second operand 7 states and 125 transitions. [2024-06-27 22:19:39,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 112 transitions, 1058 flow [2024-06-27 22:19:39,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 1013 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:39,595 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 832 flow [2024-06-27 22:19:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-06-27 22:19:39,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-27 22:19:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 832 flow [2024-06-27 22:19:39,597 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 22:19:39,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:39,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:19:39,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:39,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -296355217, now seen corresponding path program 2 times [2024-06-27 22:19:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746140008] [2024-06-27 22:19:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:40,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:40,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746140008] [2024-06-27 22:19:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746140008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:40,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130850103] [2024-06-27 22:19:40,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:40,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:40,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 832 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 22:19:40,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:40,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:40,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:41,216 INFO L124 PetriNetUnfolderBase]: 528/1061 cut-off events. [2024-06-27 22:19:41,217 INFO L125 PetriNetUnfolderBase]: For 6388/6388 co-relation queries the response was YES. [2024-06-27 22:19:41,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 1061 events. 528/1061 cut-off events. For 6388/6388 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5790 event pairs, 126 based on Foata normal form. 1/1015 useless extension candidates. Maximal degree in co-relation 4208. Up to 726 conditions per place. [2024-06-27 22:19:41,228 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 63 selfloop transitions, 53 changer transitions 0/124 dead transitions. [2024-06-27 22:19:41,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 1272 flow [2024-06-27 22:19:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:41,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:19:41,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 22:19:41,230 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 832 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:19:41,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 1272 flow [2024-06-27 22:19:41,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 1203 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:41,247 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 1025 flow [2024-06-27 22:19:41,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-27 22:19:41,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 22:19:41,248 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 1025 flow [2024-06-27 22:19:41,249 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 22:19:41,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:41,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:41,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:19:41,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:41,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1251905618, now seen corresponding path program 3 times [2024-06-27 22:19:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980022170] [2024-06-27 22:19:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:41,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:42,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:42,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980022170] [2024-06-27 22:19:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980022170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:42,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:42,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134495814] [2024-06-27 22:19:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:42,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:43,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:43,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 1025 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:43,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:43,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:43,471 INFO L124 PetriNetUnfolderBase]: 511/1051 cut-off events. [2024-06-27 22:19:43,471 INFO L125 PetriNetUnfolderBase]: For 7758/7758 co-relation queries the response was YES. [2024-06-27 22:19:43,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4561 conditions, 1051 events. 511/1051 cut-off events. For 7758/7758 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5871 event pairs, 120 based on Foata normal form. 1/1006 useless extension candidates. Maximal degree in co-relation 4512. Up to 695 conditions per place. [2024-06-27 22:19:43,480 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 47 changer transitions 0/129 dead transitions. [2024-06-27 22:19:43,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 129 transitions, 1413 flow [2024-06-27 22:19:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 22:19:43,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212355212355212 [2024-06-27 22:19:43,482 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 1025 flow. Second operand 7 states and 135 transitions. [2024-06-27 22:19:43,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 129 transitions, 1413 flow [2024-06-27 22:19:43,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 129 transitions, 1351 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:43,497 INFO L231 Difference]: Finished difference. Result has 102 places, 114 transitions, 1157 flow [2024-06-27 22:19:43,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1157, PETRI_PLACES=102, PETRI_TRANSITIONS=114} [2024-06-27 22:19:43,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-27 22:19:43,497 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 114 transitions, 1157 flow [2024-06-27 22:19:43,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:43,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:43,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:19:43,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:43,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1030715439, now seen corresponding path program 3 times [2024-06-27 22:19:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717918099] [2024-06-27 22:19:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717918099] [2024-06-27 22:19:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717918099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:44,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:44,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:44,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338879894] [2024-06-27 22:19:44,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:44,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:44,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:44,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 114 transitions, 1157 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 22:19:44,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:44,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:44,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:44,977 INFO L124 PetriNetUnfolderBase]: 544/1091 cut-off events. [2024-06-27 22:19:44,977 INFO L125 PetriNetUnfolderBase]: For 8564/8564 co-relation queries the response was YES. [2024-06-27 22:19:44,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 1091 events. 544/1091 cut-off events. For 8564/8564 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6006 event pairs, 122 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 4897. Up to 799 conditions per place. [2024-06-27 22:19:44,984 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 84 selfloop transitions, 42 changer transitions 0/134 dead transitions. [2024-06-27 22:19:44,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 134 transitions, 1529 flow [2024-06-27 22:19:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:19:44,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:19:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 22:19:44,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 22:19:44,986 INFO L175 Difference]: Start difference. First operand has 102 places, 114 transitions, 1157 flow. Second operand 7 states and 128 transitions. [2024-06-27 22:19:44,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 134 transitions, 1529 flow [2024-06-27 22:19:45,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 134 transitions, 1459 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:45,003 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 1231 flow [2024-06-27 22:19:45,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1231, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-06-27 22:19:45,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 22:19:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 1231 flow [2024-06-27 22:19:45,004 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 22:19:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:45,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:19:45,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash -423665966, now seen corresponding path program 4 times [2024-06-27 22:19:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812468767] [2024-06-27 22:19:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:46,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812468767] [2024-06-27 22:19:46,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812468767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:46,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:46,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111749952] [2024-06-27 22:19:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:46,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:46,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:46,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:46,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 1231 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:46,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:46,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:46,862 INFO L124 PetriNetUnfolderBase]: 547/1114 cut-off events. [2024-06-27 22:19:46,862 INFO L125 PetriNetUnfolderBase]: For 9135/9135 co-relation queries the response was YES. [2024-06-27 22:19:46,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5189 conditions, 1114 events. 547/1114 cut-off events. For 9135/9135 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6237 event pairs, 113 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 5136. Up to 801 conditions per place. [2024-06-27 22:19:46,872 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 100 selfloop transitions, 40 changer transitions 0/155 dead transitions. [2024-06-27 22:19:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 155 transitions, 1770 flow [2024-06-27 22:19:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:19:46,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:19:46,877 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 1231 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:19:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 155 transitions, 1770 flow [2024-06-27 22:19:46,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 1725 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:46,904 INFO L231 Difference]: Finished difference. Result has 112 places, 135 transitions, 1505 flow [2024-06-27 22:19:46,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1505, PETRI_PLACES=112, PETRI_TRANSITIONS=135} [2024-06-27 22:19:46,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 22:19:46,905 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 135 transitions, 1505 flow [2024-06-27 22:19:46,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:46,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:46,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:19:46,905 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:46,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash -40068728, now seen corresponding path program 5 times [2024-06-27 22:19:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162210370] [2024-06-27 22:19:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:46,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:47,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:47,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162210370] [2024-06-27 22:19:47,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162210370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:47,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539631750] [2024-06-27 22:19:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:47,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:47,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:48,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:48,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 1505 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:48,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:48,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:48,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:48,468 INFO L124 PetriNetUnfolderBase]: 564/1149 cut-off events. [2024-06-27 22:19:48,468 INFO L125 PetriNetUnfolderBase]: For 9884/9884 co-relation queries the response was YES. [2024-06-27 22:19:48,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 1149 events. 564/1149 cut-off events. For 9884/9884 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6501 event pairs, 112 based on Foata normal form. 1/1105 useless extension candidates. Maximal degree in co-relation 5500. Up to 814 conditions per place. [2024-06-27 22:19:48,478 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 51 changer transitions 0/171 dead transitions. [2024-06-27 22:19:48,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 171 transitions, 2072 flow [2024-06-27 22:19:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:19:48,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:19:48,480 INFO L175 Difference]: Start difference. First operand has 112 places, 135 transitions, 1505 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:19:48,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 171 transitions, 2072 flow [2024-06-27 22:19:48,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 171 transitions, 1941 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:48,507 INFO L231 Difference]: Finished difference. Result has 120 places, 149 transitions, 1734 flow [2024-06-27 22:19:48,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=120, PETRI_TRANSITIONS=149} [2024-06-27 22:19:48,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-27 22:19:48,508 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 149 transitions, 1734 flow [2024-06-27 22:19:48,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:48,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:48,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:19:48,509 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:48,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -448389265, now seen corresponding path program 4 times [2024-06-27 22:19:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7922431] [2024-06-27 22:19:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:49,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7922431] [2024-06-27 22:19:49,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7922431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:49,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:49,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114958654] [2024-06-27 22:19:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:49,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:49,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 149 transitions, 1734 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 22:19:49,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:49,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:49,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:50,013 INFO L124 PetriNetUnfolderBase]: 599/1184 cut-off events. [2024-06-27 22:19:50,013 INFO L125 PetriNetUnfolderBase]: For 10608/10608 co-relation queries the response was YES. [2024-06-27 22:19:50,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 1184 events. 599/1184 cut-off events. For 10608/10608 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6590 event pairs, 124 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 5756. Up to 861 conditions per place. [2024-06-27 22:19:50,027 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 101 selfloop transitions, 65 changer transitions 0/174 dead transitions. [2024-06-27 22:19:50,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 174 transitions, 2184 flow [2024-06-27 22:19:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:19:50,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 22:19:50,029 INFO L175 Difference]: Start difference. First operand has 120 places, 149 transitions, 1734 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:19:50,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 174 transitions, 2184 flow [2024-06-27 22:19:50,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 174 transitions, 2037 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:50,058 INFO L231 Difference]: Finished difference. Result has 121 places, 155 transitions, 1805 flow [2024-06-27 22:19:50,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1805, PETRI_PLACES=121, PETRI_TRANSITIONS=155} [2024-06-27 22:19:50,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-27 22:19:50,059 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 155 transitions, 1805 flow [2024-06-27 22:19:50,059 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 22:19:50,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:50,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:50,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:19:50,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:50,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -448389482, now seen corresponding path program 6 times [2024-06-27 22:19:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411210383] [2024-06-27 22:19:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:50,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:51,379 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 22:19:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411210383] [2024-06-27 22:19:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411210383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:51,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040939142] [2024-06-27 22:19:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:51,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:19:51,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 155 transitions, 1805 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:51,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:51,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:19:51,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:51,959 INFO L124 PetriNetUnfolderBase]: 573/1162 cut-off events. [2024-06-27 22:19:51,960 INFO L125 PetriNetUnfolderBase]: For 11156/11156 co-relation queries the response was YES. [2024-06-27 22:19:51,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5709 conditions, 1162 events. 573/1162 cut-off events. For 11156/11156 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6564 event pairs, 117 based on Foata normal form. 1/1118 useless extension candidates. Maximal degree in co-relation 5651. Up to 805 conditions per place. [2024-06-27 22:19:51,971 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 98 selfloop transitions, 62 changer transitions 0/177 dead transitions. [2024-06-27 22:19:51,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 177 transitions, 2206 flow [2024-06-27 22:19:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:19:51,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:19:51,973 INFO L175 Difference]: Start difference. First operand has 121 places, 155 transitions, 1805 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:19:51,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 177 transitions, 2206 flow [2024-06-27 22:19:51,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 177 transitions, 2064 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:52,001 INFO L231 Difference]: Finished difference. Result has 123 places, 158 transitions, 1824 flow [2024-06-27 22:19:52,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1824, PETRI_PLACES=123, PETRI_TRANSITIONS=158} [2024-06-27 22:19:52,002 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 22:19:52,002 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 158 transitions, 1824 flow [2024-06-27 22:19:52,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:52,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:52,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:52,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:19:52,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:52,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -296345297, now seen corresponding path program 1 times [2024-06-27 22:19:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612709326] [2024-06-27 22:19:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:53,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:53,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612709326] [2024-06-27 22:19:53,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612709326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:53,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:53,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18096697] [2024-06-27 22:19:53,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:53,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:53,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:53,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 158 transitions, 1824 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 22:19:53,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:53,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:53,747 INFO L124 PetriNetUnfolderBase]: 599/1190 cut-off events. [2024-06-27 22:19:53,747 INFO L125 PetriNetUnfolderBase]: For 11647/11647 co-relation queries the response was YES. [2024-06-27 22:19:53,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5858 conditions, 1190 events. 599/1190 cut-off events. For 11647/11647 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6692 event pairs, 144 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 5799. Up to 942 conditions per place. [2024-06-27 22:19:53,784 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 151 selfloop transitions, 19 changer transitions 0/178 dead transitions. [2024-06-27 22:19:53,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 178 transitions, 2252 flow [2024-06-27 22:19:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:19:53,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:19:53,787 INFO L175 Difference]: Start difference. First operand has 123 places, 158 transitions, 1824 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:19:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 178 transitions, 2252 flow [2024-06-27 22:19:53,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 2024 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:53,810 INFO L231 Difference]: Finished difference. Result has 123 places, 161 transitions, 1678 flow [2024-06-27 22:19:53,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1678, PETRI_PLACES=123, PETRI_TRANSITIONS=161} [2024-06-27 22:19:53,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 22:19:53,811 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 161 transitions, 1678 flow [2024-06-27 22:19:53,811 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 22:19:53,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:53,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:53,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:19:53,812 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:53,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 5837179, now seen corresponding path program 1 times [2024-06-27 22:19:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350670860] [2024-06-27 22:19:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:55,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:55,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350670860] [2024-06-27 22:19:55,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350670860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:55,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150325619] [2024-06-27 22:19:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:55,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:55,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:55,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 161 transitions, 1678 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 22:19:55,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:55,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:55,718 INFO L124 PetriNetUnfolderBase]: 601/1195 cut-off events. [2024-06-27 22:19:55,718 INFO L125 PetriNetUnfolderBase]: For 11333/11333 co-relation queries the response was YES. [2024-06-27 22:19:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5752 conditions, 1195 events. 601/1195 cut-off events. For 11333/11333 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6715 event pairs, 121 based on Foata normal form. 1/1149 useless extension candidates. Maximal degree in co-relation 5693. Up to 899 conditions per place. [2024-06-27 22:19:55,726 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 123 selfloop transitions, 50 changer transitions 0/181 dead transitions. [2024-06-27 22:19:55,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 181 transitions, 2102 flow [2024-06-27 22:19:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:19:55,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:19:55,728 INFO L175 Difference]: Start difference. First operand has 123 places, 161 transitions, 1678 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:19:55,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 181 transitions, 2102 flow [2024-06-27 22:19:55,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 181 transitions, 2032 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:55,756 INFO L231 Difference]: Finished difference. Result has 126 places, 164 transitions, 1751 flow [2024-06-27 22:19:55,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1751, PETRI_PLACES=126, PETRI_TRANSITIONS=164} [2024-06-27 22:19:55,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-27 22:19:55,756 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 164 transitions, 1751 flow [2024-06-27 22:19:55,757 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 22:19:55,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:55,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:19:55,757 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:55,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash 9591589, now seen corresponding path program 2 times [2024-06-27 22:19:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:55,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95219315] [2024-06-27 22:19:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:55,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:57,252 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 22:19:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95219315] [2024-06-27 22:19:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95219315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:57,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438339419] [2024-06-27 22:19:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:57,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:57,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:57,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:57,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 164 transitions, 1751 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 22:19:57,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:57,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:57,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:57,787 INFO L124 PetriNetUnfolderBase]: 619/1226 cut-off events. [2024-06-27 22:19:57,787 INFO L125 PetriNetUnfolderBase]: For 12857/12857 co-relation queries the response was YES. [2024-06-27 22:19:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 1226 events. 619/1226 cut-off events. For 12857/12857 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6911 event pairs, 133 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 5949. Up to 877 conditions per place. [2024-06-27 22:19:57,798 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 110 selfloop transitions, 70 changer transitions 0/188 dead transitions. [2024-06-27 22:19:57,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 188 transitions, 2295 flow [2024-06-27 22:19:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:19:57,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:19:57,800 INFO L175 Difference]: Start difference. First operand has 126 places, 164 transitions, 1751 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:19:57,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 188 transitions, 2295 flow [2024-06-27 22:19:57,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 188 transitions, 2136 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:57,827 INFO L231 Difference]: Finished difference. Result has 127 places, 170 transitions, 1829 flow [2024-06-27 22:19:57,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1829, PETRI_PLACES=127, PETRI_TRANSITIONS=170} [2024-06-27 22:19:57,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 22:19:57,827 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 170 transitions, 1829 flow [2024-06-27 22:19:57,828 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 22:19:57,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:57,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:57,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:19:57,828 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 9591837, now seen corresponding path program 1 times [2024-06-27 22:19:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650362084] [2024-06-27 22:19:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650362084] [2024-06-27 22:19:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650362084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:58,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:58,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959782291] [2024-06-27 22:19:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:58,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:19:58,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 170 transitions, 1829 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 22:19:58,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:58,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:19:58,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:59,332 INFO L124 PetriNetUnfolderBase]: 627/1239 cut-off events. [2024-06-27 22:19:59,333 INFO L125 PetriNetUnfolderBase]: For 14176/14176 co-relation queries the response was YES. [2024-06-27 22:19:59,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6204 conditions, 1239 events. 627/1239 cut-off events. For 14176/14176 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6984 event pairs, 110 based on Foata normal form. 1/1195 useless extension candidates. Maximal degree in co-relation 6144. Up to 965 conditions per place. [2024-06-27 22:19:59,345 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 150 selfloop transitions, 32 changer transitions 0/190 dead transitions. [2024-06-27 22:19:59,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 2287 flow [2024-06-27 22:19:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:19:59,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:19:59,347 INFO L175 Difference]: Start difference. First operand has 127 places, 170 transitions, 1829 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:19:59,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 2287 flow [2024-06-27 22:19:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 190 transitions, 2179 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:59,378 INFO L231 Difference]: Finished difference. Result has 130 places, 173 transitions, 1838 flow [2024-06-27 22:19:59,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1838, PETRI_PLACES=130, PETRI_TRANSITIONS=173} [2024-06-27 22:19:59,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 22:19:59,379 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 173 transitions, 1838 flow [2024-06-27 22:19:59,380 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 22:19:59,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:59,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:59,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:19:59,380 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:59,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 9585079, now seen corresponding path program 3 times [2024-06-27 22:19:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540021205] [2024-06-27 22:19:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:59,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540021205] [2024-06-27 22:20:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540021205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:00,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244547134] [2024-06-27 22:20:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:00,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:00,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:00,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 173 transitions, 1838 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 22:20:00,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:00,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:00,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:01,422 INFO L124 PetriNetUnfolderBase]: 625/1235 cut-off events. [2024-06-27 22:20:01,422 INFO L125 PetriNetUnfolderBase]: For 14324/14324 co-relation queries the response was YES. [2024-06-27 22:20:01,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6306 conditions, 1235 events. 625/1235 cut-off events. For 14324/14324 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6934 event pairs, 119 based on Foata normal form. 1/1189 useless extension candidates. Maximal degree in co-relation 6244. Up to 887 conditions per place. [2024-06-27 22:20:01,433 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 115 selfloop transitions, 67 changer transitions 0/190 dead transitions. [2024-06-27 22:20:01,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 190 transitions, 2256 flow [2024-06-27 22:20:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:20:01,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:20:01,435 INFO L175 Difference]: Start difference. First operand has 130 places, 173 transitions, 1838 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:20:01,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 190 transitions, 2256 flow [2024-06-27 22:20:01,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 190 transitions, 2147 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:01,468 INFO L231 Difference]: Finished difference. Result has 133 places, 173 transitions, 1870 flow [2024-06-27 22:20:01,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=133, PETRI_TRANSITIONS=173} [2024-06-27 22:20:01,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 22:20:01,469 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 173 transitions, 1870 flow [2024-06-27 22:20:01,469 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 22:20:01,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:01,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:01,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:20:01,470 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:01,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1242871901, now seen corresponding path program 2 times [2024-06-27 22:20:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:01,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976377912] [2024-06-27 22:20:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:02,617 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 22:20:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976377912] [2024-06-27 22:20:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976377912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:02,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:02,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:02,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674001893] [2024-06-27 22:20:02,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:02,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:02,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:02,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 173 transitions, 1870 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 22:20:02,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:02,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:02,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:03,096 INFO L124 PetriNetUnfolderBase]: 643/1262 cut-off events. [2024-06-27 22:20:03,096 INFO L125 PetriNetUnfolderBase]: For 15860/15860 co-relation queries the response was YES. [2024-06-27 22:20:03,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6550 conditions, 1262 events. 643/1262 cut-off events. For 15860/15860 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7093 event pairs, 122 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 6487. Up to 810 conditions per place. [2024-06-27 22:20:03,108 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 87 selfloop transitions, 103 changer transitions 0/198 dead transitions. [2024-06-27 22:20:03,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 198 transitions, 2464 flow [2024-06-27 22:20:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:20:03,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:20:03,113 INFO L175 Difference]: Start difference. First operand has 133 places, 173 transitions, 1870 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:20:03,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 198 transitions, 2464 flow [2024-06-27 22:20:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 198 transitions, 2303 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:03,151 INFO L231 Difference]: Finished difference. Result has 134 places, 180 transitions, 2054 flow [2024-06-27 22:20:03,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2054, PETRI_PLACES=134, PETRI_TRANSITIONS=180} [2024-06-27 22:20:03,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 22:20:03,152 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 180 transitions, 2054 flow [2024-06-27 22:20:03,153 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 22:20:03,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:03,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:20:03,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:03,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1242574983, now seen corresponding path program 4 times [2024-06-27 22:20:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:03,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153771478] [2024-06-27 22:20:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153771478] [2024-06-27 22:20:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153771478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:04,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269544871] [2024-06-27 22:20:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:04,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:04,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:04,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:04,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 180 transitions, 2054 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 22:20:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:04,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:04,984 INFO L124 PetriNetUnfolderBase]: 651/1282 cut-off events. [2024-06-27 22:20:04,984 INFO L125 PetriNetUnfolderBase]: For 17570/17570 co-relation queries the response was YES. [2024-06-27 22:20:04,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6938 conditions, 1282 events. 651/1282 cut-off events. For 17570/17570 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7238 event pairs, 118 based on Foata normal form. 1/1236 useless extension candidates. Maximal degree in co-relation 6873. Up to 806 conditions per place. [2024-06-27 22:20:04,993 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 89 selfloop transitions, 107 changer transitions 0/204 dead transitions. [2024-06-27 22:20:04,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 204 transitions, 2664 flow [2024-06-27 22:20:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:20:05,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:20:05,005 INFO L175 Difference]: Start difference. First operand has 134 places, 180 transitions, 2054 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:20:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 204 transitions, 2664 flow [2024-06-27 22:20:05,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 204 transitions, 2487 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:05,073 INFO L231 Difference]: Finished difference. Result has 139 places, 186 transitions, 2211 flow [2024-06-27 22:20:05,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2211, PETRI_PLACES=139, PETRI_TRANSITIONS=186} [2024-06-27 22:20:05,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-27 22:20:05,074 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 186 transitions, 2211 flow [2024-06-27 22:20:05,074 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 22:20:05,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:05,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:05,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:20:05,075 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:05,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1242575231, now seen corresponding path program 3 times [2024-06-27 22:20:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:05,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977653295] [2024-06-27 22:20:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977653295] [2024-06-27 22:20:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977653295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844149803] [2024-06-27 22:20:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:06,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:06,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:06,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 186 transitions, 2211 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 22:20:06,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:06,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:06,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:06,626 INFO L124 PetriNetUnfolderBase]: 659/1291 cut-off events. [2024-06-27 22:20:06,627 INFO L125 PetriNetUnfolderBase]: For 19236/19236 co-relation queries the response was YES. [2024-06-27 22:20:06,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 1291 events. 659/1291 cut-off events. For 19236/19236 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7272 event pairs, 102 based on Foata normal form. 1/1247 useless extension candidates. Maximal degree in co-relation 7179. Up to 931 conditions per place. [2024-06-27 22:20:06,634 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 143 selfloop transitions, 58 changer transitions 0/209 dead transitions. [2024-06-27 22:20:06,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 209 transitions, 2790 flow [2024-06-27 22:20:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:20:06,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 22:20:06,636 INFO L175 Difference]: Start difference. First operand has 139 places, 186 transitions, 2211 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:20:06,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 209 transitions, 2790 flow [2024-06-27 22:20:06,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 209 transitions, 2634 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:06,666 INFO L231 Difference]: Finished difference. Result has 142 places, 191 transitions, 2246 flow [2024-06-27 22:20:06,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2246, PETRI_PLACES=142, PETRI_TRANSITIONS=191} [2024-06-27 22:20:06,666 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 22:20:06,666 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 191 transitions, 2246 flow [2024-06-27 22:20:06,667 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 22:20:06,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:06,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:20:06,667 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:06,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1234301021, now seen corresponding path program 4 times [2024-06-27 22:20:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859162041] [2024-06-27 22:20:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859162041] [2024-06-27 22:20:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859162041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591587454] [2024-06-27 22:20:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:07,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:07,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 191 transitions, 2246 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 22:20:07,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:07,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:07,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:08,042 INFO L124 PetriNetUnfolderBase]: 667/1298 cut-off events. [2024-06-27 22:20:08,043 INFO L125 PetriNetUnfolderBase]: For 18586/18586 co-relation queries the response was YES. [2024-06-27 22:20:08,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 1298 events. 667/1298 cut-off events. For 18586/18586 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7313 event pairs, 122 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 7254. Up to 840 conditions per place. [2024-06-27 22:20:08,050 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 109 selfloop transitions, 95 changer transitions 0/212 dead transitions. [2024-06-27 22:20:08,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 212 transitions, 2813 flow [2024-06-27 22:20:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:20:08,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 22:20:08,051 INFO L175 Difference]: Start difference. First operand has 142 places, 191 transitions, 2246 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:20:08,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 212 transitions, 2813 flow [2024-06-27 22:20:08,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 212 transitions, 2744 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:08,082 INFO L231 Difference]: Finished difference. Result has 146 places, 194 transitions, 2418 flow [2024-06-27 22:20:08,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2418, PETRI_PLACES=146, PETRI_TRANSITIONS=194} [2024-06-27 22:20:08,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-27 22:20:08,083 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 194 transitions, 2418 flow [2024-06-27 22:20:08,083 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 22:20:08,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:08,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:08,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:20:08,084 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:08,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1234294263, now seen corresponding path program 5 times [2024-06-27 22:20:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263026223] [2024-06-27 22:20:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263026223] [2024-06-27 22:20:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263026223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:09,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391090752] [2024-06-27 22:20:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:09,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:09,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:09,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 194 transitions, 2418 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 22:20:09,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:09,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:09,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:10,151 INFO L124 PetriNetUnfolderBase]: 685/1333 cut-off events. [2024-06-27 22:20:10,151 INFO L125 PetriNetUnfolderBase]: For 20827/20827 co-relation queries the response was YES. [2024-06-27 22:20:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1333 events. 685/1333 cut-off events. For 20827/20827 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7551 event pairs, 118 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 7683. Up to 850 conditions per place. [2024-06-27 22:20:10,161 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 109 selfloop transitions, 102 changer transitions 0/219 dead transitions. [2024-06-27 22:20:10,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 219 transitions, 3112 flow [2024-06-27 22:20:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:20:10,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:20:10,163 INFO L175 Difference]: Start difference. First operand has 146 places, 194 transitions, 2418 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:20:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 219 transitions, 3112 flow [2024-06-27 22:20:10,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 219 transitions, 2958 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:10,204 INFO L231 Difference]: Finished difference. Result has 150 places, 200 transitions, 2570 flow [2024-06-27 22:20:10,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2570, PETRI_PLACES=150, PETRI_TRANSITIONS=200} [2024-06-27 22:20:10,205 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-27 22:20:10,205 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 200 transitions, 2570 flow [2024-06-27 22:20:10,205 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 22:20:10,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:10,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:10,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:20:10,206 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1234300773, now seen corresponding path program 6 times [2024-06-27 22:20:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357989124] [2024-06-27 22:20:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357989124] [2024-06-27 22:20:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357989124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8652686] [2024-06-27 22:20:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:11,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 200 transitions, 2570 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 22:20:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:11,938 INFO L124 PetriNetUnfolderBase]: 683/1330 cut-off events. [2024-06-27 22:20:11,939 INFO L125 PetriNetUnfolderBase]: For 21505/21505 co-relation queries the response was YES. [2024-06-27 22:20:11,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 1330 events. 683/1330 cut-off events. For 21505/21505 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7528 event pairs, 118 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 7696. Up to 848 conditions per place. [2024-06-27 22:20:11,949 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 109 selfloop transitions, 101 changer transitions 0/218 dead transitions. [2024-06-27 22:20:11,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 218 transitions, 3108 flow [2024-06-27 22:20:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:20:11,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:20:11,950 INFO L175 Difference]: Start difference. First operand has 150 places, 200 transitions, 2570 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:20:11,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 218 transitions, 3108 flow [2024-06-27 22:20:11,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 218 transitions, 2908 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:11,991 INFO L231 Difference]: Finished difference. Result has 154 places, 200 transitions, 2578 flow [2024-06-27 22:20:11,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2578, PETRI_PLACES=154, PETRI_TRANSITIONS=200} [2024-06-27 22:20:11,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-27 22:20:11,991 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 200 transitions, 2578 flow [2024-06-27 22:20:11,991 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 22:20:11,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:11,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:20:11,992 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:11,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash -244987555, now seen corresponding path program 5 times [2024-06-27 22:20:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647885325] [2024-06-27 22:20:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:12,880 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 22:20:12,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647885325] [2024-06-27 22:20:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647885325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:12,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:12,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540754723] [2024-06-27 22:20:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:12,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:12,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:12,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:12,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 200 transitions, 2578 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 22:20:12,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:12,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:12,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:13,321 INFO L124 PetriNetUnfolderBase]: 685/1329 cut-off events. [2024-06-27 22:20:13,321 INFO L125 PetriNetUnfolderBase]: For 21818/21818 co-relation queries the response was YES. [2024-06-27 22:20:13,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 1329 events. 685/1329 cut-off events. For 21818/21818 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7471 event pairs, 122 based on Foata normal form. 1/1286 useless extension candidates. Maximal degree in co-relation 7667. Up to 1051 conditions per place. [2024-06-27 22:20:13,330 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 181 selfloop transitions, 36 changer transitions 0/225 dead transitions. [2024-06-27 22:20:13,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 225 transitions, 3112 flow [2024-06-27 22:20:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:20:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:20:13,331 INFO L175 Difference]: Start difference. First operand has 154 places, 200 transitions, 2578 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:20:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 225 transitions, 3112 flow [2024-06-27 22:20:13,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 225 transitions, 2894 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:13,379 INFO L231 Difference]: Finished difference. Result has 155 places, 203 transitions, 2478 flow [2024-06-27 22:20:13,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2478, PETRI_PLACES=155, PETRI_TRANSITIONS=203} [2024-06-27 22:20:13,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 22:20:13,380 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 203 transitions, 2478 flow [2024-06-27 22:20:13,380 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 22:20:13,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:13,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:20:13,381 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:13,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1929450489, now seen corresponding path program 7 times [2024-06-27 22:20:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470942546] [2024-06-27 22:20:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470942546] [2024-06-27 22:20:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470942546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540588222] [2024-06-27 22:20:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:14,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:14,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 203 transitions, 2478 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 22:20:14,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:14,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:14,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:15,045 INFO L124 PetriNetUnfolderBase]: 701/1358 cut-off events. [2024-06-27 22:20:15,046 INFO L125 PetriNetUnfolderBase]: For 22502/22502 co-relation queries the response was YES. [2024-06-27 22:20:15,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1358 events. 701/1358 cut-off events. For 22502/22502 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7681 event pairs, 110 based on Foata normal form. 1/1314 useless extension candidates. Maximal degree in co-relation 7680. Up to 982 conditions per place. [2024-06-27 22:20:15,056 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 143 selfloop transitions, 84 changer transitions 0/235 dead transitions. [2024-06-27 22:20:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 235 transitions, 3167 flow [2024-06-27 22:20:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:20:15,057 INFO L175 Difference]: Start difference. First operand has 155 places, 203 transitions, 2478 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:15,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 235 transitions, 3167 flow [2024-06-27 22:20:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 235 transitions, 3047 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:15,102 INFO L231 Difference]: Finished difference. Result has 157 places, 212 transitions, 2674 flow [2024-06-27 22:20:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2674, PETRI_PLACES=157, PETRI_TRANSITIONS=212} [2024-06-27 22:20:15,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 22:20:15,103 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 212 transitions, 2674 flow [2024-06-27 22:20:15,103 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 22:20:15,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:15,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:20:15,103 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:15,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1929456999, now seen corresponding path program 8 times [2024-06-27 22:20:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678284525] [2024-06-27 22:20:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:15,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:16,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678284525] [2024-06-27 22:20:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678284525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:16,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203006579] [2024-06-27 22:20:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:16,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:16,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:16,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:16,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 212 transitions, 2674 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 22:20:16,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:16,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:16,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:17,317 INFO L124 PetriNetUnfolderBase]: 699/1355 cut-off events. [2024-06-27 22:20:17,317 INFO L125 PetriNetUnfolderBase]: For 23092/23092 co-relation queries the response was YES. [2024-06-27 22:20:17,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 1355 events. 699/1355 cut-off events. For 23092/23092 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7659 event pairs, 110 based on Foata normal form. 1/1311 useless extension candidates. Maximal degree in co-relation 7805. Up to 980 conditions per place. [2024-06-27 22:20:17,326 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 147 selfloop transitions, 79 changer transitions 0/234 dead transitions. [2024-06-27 22:20:17,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 234 transitions, 3196 flow [2024-06-27 22:20:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:17,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:20:17,328 INFO L175 Difference]: Start difference. First operand has 157 places, 212 transitions, 2674 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 234 transitions, 3196 flow [2024-06-27 22:20:17,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 234 transitions, 2887 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:17,373 INFO L231 Difference]: Finished difference. Result has 158 places, 212 transitions, 2533 flow [2024-06-27 22:20:17,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2533, PETRI_PLACES=158, PETRI_TRANSITIONS=212} [2024-06-27 22:20:17,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 22:20:17,374 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 212 transitions, 2533 flow [2024-06-27 22:20:17,374 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 22:20:17,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:17,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:17,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:20:17,375 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:17,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1242882813, now seen corresponding path program 1 times [2024-06-27 22:20:17,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:17,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968116098] [2024-06-27 22:20:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:17,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968116098] [2024-06-27 22:20:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968116098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:18,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252398159] [2024-06-27 22:20:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:18,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:18,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:18,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 212 transitions, 2533 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 22:20:18,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:18,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:18,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:19,232 INFO L124 PetriNetUnfolderBase]: 712/1380 cut-off events. [2024-06-27 22:20:19,232 INFO L125 PetriNetUnfolderBase]: For 23315/23315 co-relation queries the response was YES. [2024-06-27 22:20:19,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7888 conditions, 1380 events. 712/1380 cut-off events. For 23315/23315 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7858 event pairs, 145 based on Foata normal form. 1/1336 useless extension candidates. Maximal degree in co-relation 7811. Up to 1089 conditions per place. [2024-06-27 22:20:19,241 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 211 selfloop transitions, 30 changer transitions 0/249 dead transitions. [2024-06-27 22:20:19,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 249 transitions, 3219 flow [2024-06-27 22:20:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:20:19,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:20:19,242 INFO L175 Difference]: Start difference. First operand has 158 places, 212 transitions, 2533 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:20:19,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 249 transitions, 3219 flow [2024-06-27 22:20:19,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 249 transitions, 3030 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:19,284 INFO L231 Difference]: Finished difference. Result has 163 places, 222 transitions, 2548 flow [2024-06-27 22:20:19,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2548, PETRI_PLACES=163, PETRI_TRANSITIONS=222} [2024-06-27 22:20:19,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 22:20:19,285 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 222 transitions, 2548 flow [2024-06-27 22:20:19,285 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 22:20:19,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:19,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:19,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:20:19,285 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:19,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1310191415, now seen corresponding path program 1 times [2024-06-27 22:20:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:19,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311951432] [2024-06-27 22:20:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:20,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:20,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311951432] [2024-06-27 22:20:20,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311951432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:20,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:20,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:20,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934244340] [2024-06-27 22:20:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:20,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:20,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:20,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:20,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 222 transitions, 2548 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:20,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:20,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:20,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:21,009 INFO L124 PetriNetUnfolderBase]: 695/1369 cut-off events. [2024-06-27 22:20:21,009 INFO L125 PetriNetUnfolderBase]: For 25097/25097 co-relation queries the response was YES. [2024-06-27 22:20:21,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 1369 events. 695/1369 cut-off events. For 25097/25097 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7900 event pairs, 113 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 7878. Up to 947 conditions per place. [2024-06-27 22:20:21,018 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 168 selfloop transitions, 51 changer transitions 0/247 dead transitions. [2024-06-27 22:20:21,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 247 transitions, 3094 flow [2024-06-27 22:20:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:20:21,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:20:21,020 INFO L175 Difference]: Start difference. First operand has 163 places, 222 transitions, 2548 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:20:21,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 247 transitions, 3094 flow [2024-06-27 22:20:21,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 247 transitions, 3039 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:21,070 INFO L231 Difference]: Finished difference. Result has 170 places, 224 transitions, 2651 flow [2024-06-27 22:20:21,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2651, PETRI_PLACES=170, PETRI_TRANSITIONS=224} [2024-06-27 22:20:21,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-27 22:20:21,071 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 224 transitions, 2651 flow [2024-06-27 22:20:21,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:21,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:21,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:21,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:20:21,071 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:21,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1307304695, now seen corresponding path program 2 times [2024-06-27 22:20:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434276059] [2024-06-27 22:20:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:22,195 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 22:20:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434276059] [2024-06-27 22:20:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434276059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:22,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:22,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:22,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947329005] [2024-06-27 22:20:22,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:22,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:22,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:22,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 224 transitions, 2651 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:22,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:22,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:22,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:22,818 INFO L124 PetriNetUnfolderBase]: 714/1406 cut-off events. [2024-06-27 22:20:22,818 INFO L125 PetriNetUnfolderBase]: For 27146/27146 co-relation queries the response was YES. [2024-06-27 22:20:22,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8361 conditions, 1406 events. 714/1406 cut-off events. For 27146/27146 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8236 event pairs, 108 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 8277. Up to 1004 conditions per place. [2024-06-27 22:20:22,829 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 181 selfloop transitions, 39 changer transitions 0/248 dead transitions. [2024-06-27 22:20:22,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 248 transitions, 3233 flow [2024-06-27 22:20:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:20:22,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:20:22,831 INFO L175 Difference]: Start difference. First operand has 170 places, 224 transitions, 2651 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:20:22,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 248 transitions, 3233 flow [2024-06-27 22:20:22,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 248 transitions, 3095 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:22,892 INFO L231 Difference]: Finished difference. Result has 173 places, 228 transitions, 2689 flow [2024-06-27 22:20:22,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2689, PETRI_PLACES=173, PETRI_TRANSITIONS=228} [2024-06-27 22:20:22,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 22:20:22,893 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 228 transitions, 2689 flow [2024-06-27 22:20:22,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:22,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:22,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:20:22,893 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:22,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 297132373, now seen corresponding path program 3 times [2024-06-27 22:20:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631662723] [2024-06-27 22:20:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:24,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631662723] [2024-06-27 22:20:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631662723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:24,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281256362] [2024-06-27 22:20:24,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:24,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:24,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:24,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 228 transitions, 2689 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:24,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:24,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:24,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:25,053 INFO L124 PetriNetUnfolderBase]: 733/1437 cut-off events. [2024-06-27 22:20:25,054 INFO L125 PetriNetUnfolderBase]: For 29167/29167 co-relation queries the response was YES. [2024-06-27 22:20:25,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8487 conditions, 1437 events. 733/1437 cut-off events. For 29167/29167 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8393 event pairs, 121 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 8402. Up to 1026 conditions per place. [2024-06-27 22:20:25,068 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 164 selfloop transitions, 56 changer transitions 0/248 dead transitions. [2024-06-27 22:20:25,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 248 transitions, 3237 flow [2024-06-27 22:20:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:20:25,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:20:25,071 INFO L175 Difference]: Start difference. First operand has 173 places, 228 transitions, 2689 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:20:25,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 248 transitions, 3237 flow [2024-06-27 22:20:25,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 248 transitions, 3123 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:25,142 INFO L231 Difference]: Finished difference. Result has 177 places, 230 transitions, 2749 flow [2024-06-27 22:20:25,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2749, PETRI_PLACES=177, PETRI_TRANSITIONS=230} [2024-06-27 22:20:25,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-27 22:20:25,143 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 230 transitions, 2749 flow [2024-06-27 22:20:25,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:25,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:25,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:20:25,143 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:25,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 180953425, now seen corresponding path program 1 times [2024-06-27 22:20:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:25,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080713281] [2024-06-27 22:20:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080713281] [2024-06-27 22:20:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080713281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868190386] [2024-06-27 22:20:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:26,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:26,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:26,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 230 transitions, 2749 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 22:20:26,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:26,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:27,028 INFO L124 PetriNetUnfolderBase]: 773/1481 cut-off events. [2024-06-27 22:20:27,028 INFO L125 PetriNetUnfolderBase]: For 29492/29492 co-relation queries the response was YES. [2024-06-27 22:20:27,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8843 conditions, 1481 events. 773/1481 cut-off events. For 29492/29492 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8544 event pairs, 119 based on Foata normal form. 1/1435 useless extension candidates. Maximal degree in co-relation 8756. Up to 1162 conditions per place. [2024-06-27 22:20:27,040 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 192 selfloop transitions, 53 changer transitions 0/253 dead transitions. [2024-06-27 22:20:27,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 253 transitions, 3345 flow [2024-06-27 22:20:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:20:27,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:20:27,042 INFO L175 Difference]: Start difference. First operand has 177 places, 230 transitions, 2749 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:20:27,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 253 transitions, 3345 flow [2024-06-27 22:20:27,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 253 transitions, 3189 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:27,113 INFO L231 Difference]: Finished difference. Result has 179 places, 233 transitions, 2756 flow [2024-06-27 22:20:27,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2756, PETRI_PLACES=179, PETRI_TRANSITIONS=233} [2024-06-27 22:20:27,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 22:20:27,114 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 233 transitions, 2756 flow [2024-06-27 22:20:27,114 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 22:20:27,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:27,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:27,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:20:27,115 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:27,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 297138325, now seen corresponding path program 2 times [2024-06-27 22:20:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:27,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504674223] [2024-06-27 22:20:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504674223] [2024-06-27 22:20:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504674223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:28,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:28,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971816967] [2024-06-27 22:20:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:28,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:28,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 233 transitions, 2756 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 22:20:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:28,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:29,662 INFO L124 PetriNetUnfolderBase]: 791/1512 cut-off events. [2024-06-27 22:20:29,662 INFO L125 PetriNetUnfolderBase]: For 30970/30970 co-relation queries the response was YES. [2024-06-27 22:20:29,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9018 conditions, 1512 events. 791/1512 cut-off events. For 30970/30970 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8782 event pairs, 120 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 8930. Up to 1104 conditions per place. [2024-06-27 22:20:29,673 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 170 selfloop transitions, 82 changer transitions 0/260 dead transitions. [2024-06-27 22:20:29,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 260 transitions, 3524 flow [2024-06-27 22:20:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:20:29,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:20:29,674 INFO L175 Difference]: Start difference. First operand has 179 places, 233 transitions, 2756 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:20:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 260 transitions, 3524 flow [2024-06-27 22:20:29,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 260 transitions, 3397 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:29,747 INFO L231 Difference]: Finished difference. Result has 182 places, 239 transitions, 2926 flow [2024-06-27 22:20:29,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2926, PETRI_PLACES=182, PETRI_TRANSITIONS=239} [2024-06-27 22:20:29,748 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 22:20:29,748 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 239 transitions, 2926 flow [2024-06-27 22:20:29,748 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 22:20:29,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:29,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:20:29,749 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:29,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 297340135, now seen corresponding path program 3 times [2024-06-27 22:20:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114822805] [2024-06-27 22:20:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:30,975 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 22:20:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114822805] [2024-06-27 22:20:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114822805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:30,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:30,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406442079] [2024-06-27 22:20:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:30,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:30,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:30,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:31,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:31,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 239 transitions, 2926 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 22:20:31,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:31,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:31,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:31,802 INFO L124 PetriNetUnfolderBase]: 799/1528 cut-off events. [2024-06-27 22:20:31,802 INFO L125 PetriNetUnfolderBase]: For 33180/33180 co-relation queries the response was YES. [2024-06-27 22:20:31,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9286 conditions, 1528 events. 799/1528 cut-off events. For 33180/33180 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8874 event pairs, 116 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 9197. Up to 1113 conditions per place. [2024-06-27 22:20:31,814 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 167 selfloop transitions, 88 changer transitions 0/263 dead transitions. [2024-06-27 22:20:31,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 263 transitions, 3648 flow [2024-06-27 22:20:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:20:31,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:20:31,815 INFO L175 Difference]: Start difference. First operand has 182 places, 239 transitions, 2926 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:20:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 263 transitions, 3648 flow [2024-06-27 22:20:31,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 263 transitions, 3476 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:31,900 INFO L231 Difference]: Finished difference. Result has 186 places, 242 transitions, 3003 flow [2024-06-27 22:20:31,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=186, PETRI_TRANSITIONS=242} [2024-06-27 22:20:31,901 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 22:20:31,901 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 242 transitions, 3003 flow [2024-06-27 22:20:31,901 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 22:20:31,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:31,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:31,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:20:31,902 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:31,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:31,902 INFO L85 PathProgramCache]: Analyzing trace with hash 297347854, now seen corresponding path program 1 times [2024-06-27 22:20:31,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:31,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640355307] [2024-06-27 22:20:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:31,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640355307] [2024-06-27 22:20:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640355307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:32,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:32,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107790800] [2024-06-27 22:20:32,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:32,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:32,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:32,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 242 transitions, 3003 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:32,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:32,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:32,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:33,397 INFO L124 PetriNetUnfolderBase]: 725/1415 cut-off events. [2024-06-27 22:20:33,397 INFO L125 PetriNetUnfolderBase]: For 33988/33988 co-relation queries the response was YES. [2024-06-27 22:20:33,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8658 conditions, 1415 events. 725/1415 cut-off events. For 33988/33988 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8396 event pairs, 119 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 8567. Up to 1101 conditions per place. [2024-06-27 22:20:33,412 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 204 selfloop transitions, 45 changer transitions 0/261 dead transitions. [2024-06-27 22:20:33,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 261 transitions, 3595 flow [2024-06-27 22:20:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:33,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:20:33,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:20:33,414 INFO L175 Difference]: Start difference. First operand has 186 places, 242 transitions, 3003 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:20:33,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 261 transitions, 3595 flow [2024-06-27 22:20:33,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 261 transitions, 3377 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:33,486 INFO L231 Difference]: Finished difference. Result has 186 places, 245 transitions, 2947 flow [2024-06-27 22:20:33,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2947, PETRI_PLACES=186, PETRI_TRANSITIONS=245} [2024-06-27 22:20:33,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 22:20:33,487 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 245 transitions, 2947 flow [2024-06-27 22:20:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:33,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:33,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:33,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:20:33,488 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:33,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 297347575, now seen corresponding path program 4 times [2024-06-27 22:20:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:33,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539014140] [2024-06-27 22:20:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:34,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:34,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539014140] [2024-06-27 22:20:34,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539014140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:34,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:34,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553914016] [2024-06-27 22:20:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:34,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:34,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 245 transitions, 2947 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 22:20:34,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:34,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:35,405 INFO L124 PetriNetUnfolderBase]: 805/1537 cut-off events. [2024-06-27 22:20:35,405 INFO L125 PetriNetUnfolderBase]: For 34454/34454 co-relation queries the response was YES. [2024-06-27 22:20:35,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9412 conditions, 1537 events. 805/1537 cut-off events. For 34454/34454 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8945 event pairs, 103 based on Foata normal form. 1/1491 useless extension candidates. Maximal degree in co-relation 9321. Up to 1123 conditions per place. [2024-06-27 22:20:35,417 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 165 selfloop transitions, 92 changer transitions 0/265 dead transitions. [2024-06-27 22:20:35,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 265 transitions, 3525 flow [2024-06-27 22:20:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:20:35,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:20:35,418 INFO L175 Difference]: Start difference. First operand has 186 places, 245 transitions, 2947 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:20:35,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 265 transitions, 3525 flow [2024-06-27 22:20:35,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 265 transitions, 3363 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:35,524 INFO L231 Difference]: Finished difference. Result has 189 places, 245 transitions, 2976 flow [2024-06-27 22:20:35,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2976, PETRI_PLACES=189, PETRI_TRANSITIONS=245} [2024-06-27 22:20:35,525 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 22:20:35,525 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 245 transitions, 2976 flow [2024-06-27 22:20:35,525 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 22:20:35,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:35,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:35,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:20:35,526 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:35,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash -391588587, now seen corresponding path program 4 times [2024-06-27 22:20:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677368112] [2024-06-27 22:20:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:36,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:36,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677368112] [2024-06-27 22:20:36,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677368112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:36,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:36,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:36,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160547421] [2024-06-27 22:20:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:36,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:36,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 245 transitions, 2976 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:36,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:36,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:36,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:37,471 INFO L124 PetriNetUnfolderBase]: 773/1513 cut-off events. [2024-06-27 22:20:37,471 INFO L125 PetriNetUnfolderBase]: For 37542/37542 co-relation queries the response was YES. [2024-06-27 22:20:37,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9419 conditions, 1513 events. 773/1513 cut-off events. For 37542/37542 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8977 event pairs, 120 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 9326. Up to 1040 conditions per place. [2024-06-27 22:20:37,484 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 161 selfloop transitions, 76 changer transitions 0/265 dead transitions. [2024-06-27 22:20:37,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 265 transitions, 3568 flow [2024-06-27 22:20:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:20:37,485 INFO L175 Difference]: Start difference. First operand has 189 places, 245 transitions, 2976 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:37,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 265 transitions, 3568 flow [2024-06-27 22:20:37,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 3372 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:37,592 INFO L231 Difference]: Finished difference. Result has 190 places, 247 transitions, 3001 flow [2024-06-27 22:20:37,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3001, PETRI_PLACES=190, PETRI_TRANSITIONS=247} [2024-06-27 22:20:37,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 22:20:37,593 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 247 transitions, 3001 flow [2024-06-27 22:20:37,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:37,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:37,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:37,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:20:37,594 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash -125676105, now seen corresponding path program 5 times [2024-06-27 22:20:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998160433] [2024-06-27 22:20:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:37,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998160433] [2024-06-27 22:20:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998160433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437765400] [2024-06-27 22:20:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:38,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:39,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:39,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 247 transitions, 3001 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 22:20:39,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:39,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:39,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:39,582 INFO L124 PetriNetUnfolderBase]: 825/1569 cut-off events. [2024-06-27 22:20:39,583 INFO L125 PetriNetUnfolderBase]: For 38476/38476 co-relation queries the response was YES. [2024-06-27 22:20:39,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 1569 events. 825/1569 cut-off events. For 38476/38476 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9153 event pairs, 127 based on Foata normal form. 1/1523 useless extension candidates. Maximal degree in co-relation 9681. Up to 941 conditions per place. [2024-06-27 22:20:39,596 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 109 selfloop transitions, 157 changer transitions 0/274 dead transitions. [2024-06-27 22:20:39,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 274 transitions, 3829 flow [2024-06-27 22:20:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:20:39,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:20:39,598 INFO L175 Difference]: Start difference. First operand has 190 places, 247 transitions, 3001 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:20:39,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 274 transitions, 3829 flow [2024-06-27 22:20:39,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 274 transitions, 3624 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:39,701 INFO L231 Difference]: Finished difference. Result has 193 places, 253 transitions, 3262 flow [2024-06-27 22:20:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3262, PETRI_PLACES=193, PETRI_TRANSITIONS=253} [2024-06-27 22:20:39,701 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 22:20:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 253 transitions, 3262 flow [2024-06-27 22:20:39,702 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 22:20:39,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:39,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:20:39,702 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -212305620, now seen corresponding path program 2 times [2024-06-27 22:20:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872156820] [2024-06-27 22:20:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872156820] [2024-06-27 22:20:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872156820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:40,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:40,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:40,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830658428] [2024-06-27 22:20:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:40,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:40,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 253 transitions, 3262 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:40,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:40,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:40,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:41,159 INFO L124 PetriNetUnfolderBase]: 752/1463 cut-off events. [2024-06-27 22:20:41,159 INFO L125 PetriNetUnfolderBase]: For 40591/40591 co-relation queries the response was YES. [2024-06-27 22:20:41,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9311 conditions, 1463 events. 752/1463 cut-off events. For 40591/40591 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8753 event pairs, 122 based on Foata normal form. 1/1412 useless extension candidates. Maximal degree in co-relation 9216. Up to 1073 conditions per place. [2024-06-27 22:20:41,172 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 192 selfloop transitions, 74 changer transitions 0/278 dead transitions. [2024-06-27 22:20:41,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 278 transitions, 4212 flow [2024-06-27 22:20:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:20:41,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:20:41,173 INFO L175 Difference]: Start difference. First operand has 193 places, 253 transitions, 3262 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:20:41,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 278 transitions, 4212 flow [2024-06-27 22:20:41,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 278 transitions, 3961 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:41,288 INFO L231 Difference]: Finished difference. Result has 195 places, 262 transitions, 3375 flow [2024-06-27 22:20:41,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3375, PETRI_PLACES=195, PETRI_TRANSITIONS=262} [2024-06-27 22:20:41,289 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-27 22:20:41,289 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 262 transitions, 3375 flow [2024-06-27 22:20:41,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:41,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:41,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:41,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:20:41,289 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:41,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1319970738, now seen corresponding path program 3 times [2024-06-27 22:20:41,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:41,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801504364] [2024-06-27 22:20:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:41,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801504364] [2024-06-27 22:20:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801504364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241559304] [2024-06-27 22:20:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:42,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:42,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:42,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 262 transitions, 3375 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 22:20:42,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:42,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:42,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:43,127 INFO L124 PetriNetUnfolderBase]: 841/1597 cut-off events. [2024-06-27 22:20:43,127 INFO L125 PetriNetUnfolderBase]: For 40790/40790 co-relation queries the response was YES. [2024-06-27 22:20:43,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10194 conditions, 1597 events. 841/1597 cut-off events. For 40790/40790 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9319 event pairs, 159 based on Foata normal form. 1/1553 useless extension candidates. Maximal degree in co-relation 10098. Up to 1314 conditions per place. [2024-06-27 22:20:43,140 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 252 selfloop transitions, 22 changer transitions 0/282 dead transitions. [2024-06-27 22:20:43,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 282 transitions, 3989 flow [2024-06-27 22:20:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:20:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:20:43,141 INFO L175 Difference]: Start difference. First operand has 195 places, 262 transitions, 3375 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:20:43,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 282 transitions, 3989 flow [2024-06-27 22:20:43,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 282 transitions, 3804 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-27 22:20:43,273 INFO L231 Difference]: Finished difference. Result has 202 places, 262 transitions, 3240 flow [2024-06-27 22:20:43,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3240, PETRI_PLACES=202, PETRI_TRANSITIONS=262} [2024-06-27 22:20:43,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 22:20:43,273 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 262 transitions, 3240 flow [2024-06-27 22:20:43,274 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 22:20:43,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:43,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:43,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:20:43,274 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:43,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1329501657, now seen corresponding path program 6 times [2024-06-27 22:20:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543387507] [2024-06-27 22:20:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:43,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:44,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:44,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543387507] [2024-06-27 22:20:44,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543387507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:44,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:44,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187389395] [2024-06-27 22:20:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:44,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:44,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:44,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:44,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 262 transitions, 3240 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 22:20:44,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:44,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:44,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:45,197 INFO L124 PetriNetUnfolderBase]: 859/1628 cut-off events. [2024-06-27 22:20:45,197 INFO L125 PetriNetUnfolderBase]: For 42562/42562 co-relation queries the response was YES. [2024-06-27 22:20:45,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10364 conditions, 1628 events. 859/1628 cut-off events. For 42562/42562 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9522 event pairs, 113 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 10265. Up to 985 conditions per place. [2024-06-27 22:20:45,211 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 133 selfloop transitions, 149 changer transitions 0/290 dead transitions. [2024-06-27 22:20:45,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 290 transitions, 4174 flow [2024-06-27 22:20:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:20:45,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:20:45,213 INFO L175 Difference]: Start difference. First operand has 202 places, 262 transitions, 3240 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:20:45,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 290 transitions, 4174 flow [2024-06-27 22:20:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 290 transitions, 4113 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:20:45,359 INFO L231 Difference]: Finished difference. Result has 201 places, 268 transitions, 3595 flow [2024-06-27 22:20:45,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3595, PETRI_PLACES=201, PETRI_TRANSITIONS=268} [2024-06-27 22:20:45,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-27 22:20:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 268 transitions, 3595 flow [2024-06-27 22:20:45,360 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 22:20:45,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:45,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:20:45,360 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:45,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash -134872596, now seen corresponding path program 4 times [2024-06-27 22:20:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075198831] [2024-06-27 22:20:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:46,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075198831] [2024-06-27 22:20:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075198831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644902266] [2024-06-27 22:20:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:46,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:46,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 268 transitions, 3595 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:46,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:46,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:46,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:46,947 INFO L124 PetriNetUnfolderBase]: 770/1494 cut-off events. [2024-06-27 22:20:46,949 INFO L125 PetriNetUnfolderBase]: For 43702/43702 co-relation queries the response was YES. [2024-06-27 22:20:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1494 events. 770/1494 cut-off events. For 43702/43702 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8942 event pairs, 121 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 9671. Up to 1099 conditions per place. [2024-06-27 22:20:46,960 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 200 selfloop transitions, 74 changer transitions 0/286 dead transitions. [2024-06-27 22:20:46,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 286 transitions, 4325 flow [2024-06-27 22:20:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:20:46,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:20:46,963 INFO L175 Difference]: Start difference. First operand has 201 places, 268 transitions, 3595 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:20:46,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 286 transitions, 4325 flow [2024-06-27 22:20:47,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 286 transitions, 4057 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:47,083 INFO L231 Difference]: Finished difference. Result has 205 places, 271 transitions, 3535 flow [2024-06-27 22:20:47,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3535, PETRI_PLACES=205, PETRI_TRANSITIONS=271} [2024-06-27 22:20:47,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 22:20:47,084 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 271 transitions, 3535 flow [2024-06-27 22:20:47,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:47,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:47,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:20:47,085 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:47,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash -134872875, now seen corresponding path program 7 times [2024-06-27 22:20:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245837518] [2024-06-27 22:20:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245837518] [2024-06-27 22:20:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245837518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:48,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:48,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:48,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474566806] [2024-06-27 22:20:48,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:48,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:48,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:48,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:48,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:48,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:48,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 271 transitions, 3535 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 22:20:48,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:48,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:48,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:49,085 INFO L124 PetriNetUnfolderBase]: 865/1634 cut-off events. [2024-06-27 22:20:49,085 INFO L125 PetriNetUnfolderBase]: For 44184/44184 co-relation queries the response was YES. [2024-06-27 22:20:49,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10567 conditions, 1634 events. 865/1634 cut-off events. For 44184/44184 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9534 event pairs, 123 based on Foata normal form. 1/1587 useless extension candidates. Maximal degree in co-relation 10468. Up to 995 conditions per place. [2024-06-27 22:20:49,098 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 136 selfloop transitions, 148 changer transitions 0/292 dead transitions. [2024-06-27 22:20:49,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 292 transitions, 4269 flow [2024-06-27 22:20:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:20:49,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:20:49,100 INFO L175 Difference]: Start difference. First operand has 205 places, 271 transitions, 3535 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:20:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 292 transitions, 4269 flow [2024-06-27 22:20:49,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 292 transitions, 4087 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:49,220 INFO L231 Difference]: Finished difference. Result has 209 places, 271 transitions, 3655 flow [2024-06-27 22:20:49,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3655, PETRI_PLACES=209, PETRI_TRANSITIONS=271} [2024-06-27 22:20:49,220 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 22:20:49,220 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 271 transitions, 3655 flow [2024-06-27 22:20:49,220 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 22:20:49,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:49,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:49,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:20:49,221 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:49,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:49,221 INFO L85 PathProgramCache]: Analyzing trace with hash -391582635, now seen corresponding path program 8 times [2024-06-27 22:20:49,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:49,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999659509] [2024-06-27 22:20:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:49,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:50,609 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 22:20:50,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:50,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999659509] [2024-06-27 22:20:50,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999659509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:50,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:50,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:50,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472727231] [2024-06-27 22:20:50,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:50,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:50,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:50,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:50,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:50,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 271 transitions, 3655 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 22:20:50,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:50,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:50,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:51,436 INFO L124 PetriNetUnfolderBase]: 883/1665 cut-off events. [2024-06-27 22:20:51,436 INFO L125 PetriNetUnfolderBase]: For 47883/47883 co-relation queries the response was YES. [2024-06-27 22:20:51,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10982 conditions, 1665 events. 883/1665 cut-off events. For 47883/47883 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9750 event pairs, 123 based on Foata normal form. 1/1618 useless extension candidates. Maximal degree in co-relation 10882. Up to 1015 conditions per place. [2024-06-27 22:20:51,451 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 146 selfloop transitions, 145 changer transitions 0/299 dead transitions. [2024-06-27 22:20:51,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 299 transitions, 4637 flow [2024-06-27 22:20:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:20:51,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:20:51,452 INFO L175 Difference]: Start difference. First operand has 209 places, 271 transitions, 3655 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:20:51,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 299 transitions, 4637 flow [2024-06-27 22:20:51,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 299 transitions, 4321 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:51,577 INFO L231 Difference]: Finished difference. Result has 210 places, 277 transitions, 3765 flow [2024-06-27 22:20:51,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3765, PETRI_PLACES=210, PETRI_TRANSITIONS=277} [2024-06-27 22:20:51,577 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 22:20:51,577 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 277 transitions, 3765 flow [2024-06-27 22:20:51,578 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 22:20:51,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:51,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:20:51,578 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:51,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -391373385, now seen corresponding path program 9 times [2024-06-27 22:20:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989622743] [2024-06-27 22:20:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:52,812 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 22:20:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989622743] [2024-06-27 22:20:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989622743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851924446] [2024-06-27 22:20:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:52,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:52,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:52,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 277 transitions, 3765 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 22:20:52,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:52,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:53,488 INFO L124 PetriNetUnfolderBase]: 891/1677 cut-off events. [2024-06-27 22:20:53,489 INFO L125 PetriNetUnfolderBase]: For 49763/49763 co-relation queries the response was YES. [2024-06-27 22:20:53,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11081 conditions, 1677 events. 891/1677 cut-off events. For 49763/49763 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9821 event pairs, 113 based on Foata normal form. 1/1630 useless extension candidates. Maximal degree in co-relation 10980. Up to 1024 conditions per place. [2024-06-27 22:20:53,504 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 146 changer transitions 0/302 dead transitions. [2024-06-27 22:20:53,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 302 transitions, 4692 flow [2024-06-27 22:20:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:20:53,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:20:53,506 INFO L175 Difference]: Start difference. First operand has 210 places, 277 transitions, 3765 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:20:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 302 transitions, 4692 flow [2024-06-27 22:20:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 302 transitions, 4439 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:53,649 INFO L231 Difference]: Finished difference. Result has 214 places, 280 transitions, 3875 flow [2024-06-27 22:20:53,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3529, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3875, PETRI_PLACES=214, PETRI_TRANSITIONS=280} [2024-06-27 22:20:53,649 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 22:20:53,649 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 280 transitions, 3875 flow [2024-06-27 22:20:53,650 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 22:20:53,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:53,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:53,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:20:53,650 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:53,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -391373106, now seen corresponding path program 5 times [2024-06-27 22:20:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:53,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566605220] [2024-06-27 22:20:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566605220] [2024-06-27 22:20:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566605220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144208970] [2024-06-27 22:20:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:54,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:54,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 280 transitions, 3875 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:54,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:54,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:54,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:55,201 INFO L124 PetriNetUnfolderBase]: 786/1521 cut-off events. [2024-06-27 22:20:55,201 INFO L125 PetriNetUnfolderBase]: For 48918/48918 co-relation queries the response was YES. [2024-06-27 22:20:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9943 conditions, 1521 events. 786/1521 cut-off events. For 48918/48918 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9166 event pairs, 121 based on Foata normal form. 1/1468 useless extension candidates. Maximal degree in co-relation 9841. Up to 1124 conditions per place. [2024-06-27 22:20:55,215 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 211 selfloop transitions, 71 changer transitions 0/294 dead transitions. [2024-06-27 22:20:55,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 294 transitions, 4469 flow [2024-06-27 22:20:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:20:55,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:20:55,216 INFO L175 Difference]: Start difference. First operand has 214 places, 280 transitions, 3875 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:20:55,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 294 transitions, 4469 flow [2024-06-27 22:20:55,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 294 transitions, 4228 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:55,386 INFO L231 Difference]: Finished difference. Result has 217 places, 280 transitions, 3782 flow [2024-06-27 22:20:55,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3782, PETRI_PLACES=217, PETRI_TRANSITIONS=280} [2024-06-27 22:20:55,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 22:20:55,387 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 280 transitions, 3782 flow [2024-06-27 22:20:55,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:55,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:55,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:20:55,388 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:55,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1586002167, now seen corresponding path program 10 times [2024-06-27 22:20:55,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:55,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563489937] [2024-06-27 22:20:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563489937] [2024-06-27 22:20:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563489937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:56,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596360465] [2024-06-27 22:20:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:56,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:20:56,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 280 transitions, 3782 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 22:20:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:56,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:20:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:57,337 INFO L124 PetriNetUnfolderBase]: 887/1671 cut-off events. [2024-06-27 22:20:57,338 INFO L125 PetriNetUnfolderBase]: For 49461/49461 co-relation queries the response was YES. [2024-06-27 22:20:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 1671 events. 887/1671 cut-off events. For 49461/49461 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9786 event pairs, 123 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 10691. Up to 1019 conditions per place. [2024-06-27 22:20:57,351 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 145 changer transitions 0/301 dead transitions. [2024-06-27 22:20:57,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 301 transitions, 4542 flow [2024-06-27 22:20:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:20:57,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 22:20:57,352 INFO L175 Difference]: Start difference. First operand has 217 places, 280 transitions, 3782 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:20:57,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 301 transitions, 4542 flow [2024-06-27 22:20:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 301 transitions, 4286 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:57,493 INFO L231 Difference]: Finished difference. Result has 217 places, 280 transitions, 3822 flow [2024-06-27 22:20:57,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3822, PETRI_PLACES=217, PETRI_TRANSITIONS=280} [2024-06-27 22:20:57,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 22:20:57,494 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 280 transitions, 3822 flow [2024-06-27 22:20:57,494 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 22:20:57,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:57,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:20:57,494 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:57,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1037477137, now seen corresponding path program 5 times [2024-06-27 22:20:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555272557] [2024-06-27 22:20:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555272557] [2024-06-27 22:20:58,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555272557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:20:58,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613401663] [2024-06-27 22:20:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:20:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:58,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:20:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:20:58,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:20:58,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 280 transitions, 3822 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:58,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:58,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:20:58,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:59,032 INFO L124 PetriNetUnfolderBase]: 874/1691 cut-off events. [2024-06-27 22:20:59,032 INFO L125 PetriNetUnfolderBase]: For 55043/55043 co-relation queries the response was YES. [2024-06-27 22:20:59,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11012 conditions, 1691 events. 874/1691 cut-off events. For 55043/55043 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10151 event pairs, 124 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 10908. Up to 1245 conditions per place. [2024-06-27 22:20:59,045 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 239 selfloop transitions, 49 changer transitions 0/316 dead transitions. [2024-06-27 22:20:59,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 316 transitions, 4621 flow [2024-06-27 22:20:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:20:59,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-27 22:20:59,046 INFO L175 Difference]: Start difference. First operand has 217 places, 280 transitions, 3822 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:20:59,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 316 transitions, 4621 flow [2024-06-27 22:20:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 316 transitions, 4295 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:59,252 INFO L231 Difference]: Finished difference. Result has 218 places, 288 transitions, 3760 flow [2024-06-27 22:20:59,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3760, PETRI_PLACES=218, PETRI_TRANSITIONS=288} [2024-06-27 22:20:59,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 22:20:59,252 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 288 transitions, 3760 flow [2024-06-27 22:20:59,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:59,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:59,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:20:59,253 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:59,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1094245515, now seen corresponding path program 6 times [2024-06-27 22:20:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:59,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697912480] [2024-06-27 22:20:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697912480] [2024-06-27 22:21:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697912480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:21:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600402518] [2024-06-27 22:21:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:21:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:21:00,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:21:00,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:00,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 288 transitions, 3760 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:00,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:00,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:00,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:00,874 INFO L124 PetriNetUnfolderBase]: 884/1690 cut-off events. [2024-06-27 22:21:00,874 INFO L125 PetriNetUnfolderBase]: For 57972/57981 co-relation queries the response was YES. [2024-06-27 22:21:00,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11024 conditions, 1690 events. 884/1690 cut-off events. For 57972/57981 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10212 event pairs, 131 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 10919. Up to 1281 conditions per place. [2024-06-27 22:21:00,888 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 235 selfloop transitions, 55 changer transitions 0/318 dead transitions. [2024-06-27 22:21:00,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 318 transitions, 4498 flow [2024-06-27 22:21:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:21:00,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:21:00,890 INFO L175 Difference]: Start difference. First operand has 218 places, 288 transitions, 3760 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:21:00,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 318 transitions, 4498 flow [2024-06-27 22:21:01,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 318 transitions, 4346 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:01,063 INFO L231 Difference]: Finished difference. Result has 223 places, 292 transitions, 3813 flow [2024-06-27 22:21:01,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3813, PETRI_PLACES=223, PETRI_TRANSITIONS=292} [2024-06-27 22:21:01,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-27 22:21:01,064 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 292 transitions, 3813 flow [2024-06-27 22:21:01,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:01,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:01,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:21:01,064 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:01,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash 497653613, now seen corresponding path program 7 times [2024-06-27 22:21:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394793453] [2024-06-27 22:21:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:01,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:01,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:01,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394793453] [2024-06-27 22:21:01,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394793453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:01,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:01,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:21:01,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456051752] [2024-06-27 22:21:01,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:01,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:21:01,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:21:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:21:01,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:21:01,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 292 transitions, 3813 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:01,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:01,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:21:01,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:02,432 INFO L124 PetriNetUnfolderBase]: 834/1674 cut-off events. [2024-06-27 22:21:02,433 INFO L125 PetriNetUnfolderBase]: For 58351/58373 co-relation queries the response was YES. [2024-06-27 22:21:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 1674 events. 834/1674 cut-off events. For 58351/58373 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10498 event pairs, 54 based on Foata normal form. 17/1648 useless extension candidates. Maximal degree in co-relation 10561. Up to 961 conditions per place. [2024-06-27 22:21:02,450 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 185 selfloop transitions, 66 changer transitions 0/328 dead transitions. [2024-06-27 22:21:02,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 328 transitions, 4612 flow [2024-06-27 22:21:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-27 22:21:02,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345345345345346 [2024-06-27 22:21:02,451 INFO L175 Difference]: Start difference. First operand has 223 places, 292 transitions, 3813 flow. Second operand 9 states and 178 transitions. [2024-06-27 22:21:02,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 328 transitions, 4612 flow [2024-06-27 22:21:02,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 328 transitions, 4447 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:02,616 INFO L231 Difference]: Finished difference. Result has 225 places, 304 transitions, 4065 flow [2024-06-27 22:21:02,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4065, PETRI_PLACES=225, PETRI_TRANSITIONS=304} [2024-06-27 22:21:02,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 22:21:02,616 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 304 transitions, 4065 flow [2024-06-27 22:21:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:02,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:02,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:02,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:21:02,617 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:02,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1095289347, now seen corresponding path program 11 times [2024-06-27 22:21:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:02,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691138786] [2024-06-27 22:21:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:03,667 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 22:21:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:03,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691138786] [2024-06-27 22:21:03,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691138786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:03,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064353887] [2024-06-27 22:21:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:03,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:03,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:03,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 304 transitions, 4065 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 22:21:03,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:03,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:03,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:04,343 INFO L124 PetriNetUnfolderBase]: 1007/1885 cut-off events. [2024-06-27 22:21:04,344 INFO L125 PetriNetUnfolderBase]: For 59880/59880 co-relation queries the response was YES. [2024-06-27 22:21:04,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12334 conditions, 1885 events. 1007/1885 cut-off events. For 59880/59880 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11366 event pairs, 155 based on Foata normal form. 1/1841 useless extension candidates. Maximal degree in co-relation 12224. Up to 1526 conditions per place. [2024-06-27 22:21:04,406 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 273 selfloop transitions, 63 changer transitions 0/344 dead transitions. [2024-06-27 22:21:04,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 344 transitions, 5043 flow [2024-06-27 22:21:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:21:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:21:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:21:04,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:21:04,408 INFO L175 Difference]: Start difference. First operand has 225 places, 304 transitions, 4065 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:21:04,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 344 transitions, 5043 flow [2024-06-27 22:21:04,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 344 transitions, 4888 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:04,613 INFO L231 Difference]: Finished difference. Result has 234 places, 316 transitions, 4297 flow [2024-06-27 22:21:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4297, PETRI_PLACES=234, PETRI_TRANSITIONS=316} [2024-06-27 22:21:04,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-27 22:21:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 316 transitions, 4297 flow [2024-06-27 22:21:04,615 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 22:21:04,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:04,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:04,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:21:04,615 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:04,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash 794635137, now seen corresponding path program 8 times [2024-06-27 22:21:04,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:04,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800969342] [2024-06-27 22:21:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:04,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800969342] [2024-06-27 22:21:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800969342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:05,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:21:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268911086] [2024-06-27 22:21:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:21:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:21:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:21:05,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:05,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 316 transitions, 4297 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:05,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:05,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:05,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:06,277 INFO L124 PetriNetUnfolderBase]: 995/1874 cut-off events. [2024-06-27 22:21:06,278 INFO L125 PetriNetUnfolderBase]: For 61958/61962 co-relation queries the response was YES. [2024-06-27 22:21:06,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12398 conditions, 1874 events. 995/1874 cut-off events. For 61958/61962 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11514 event pairs, 155 based on Foata normal form. 3/1832 useless extension candidates. Maximal degree in co-relation 12285. Up to 1426 conditions per place. [2024-06-27 22:21:06,294 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 272 selfloop transitions, 53 changer transitions 0/355 dead transitions. [2024-06-27 22:21:06,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 355 transitions, 5246 flow [2024-06-27 22:21:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:21:06,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 22:21:06,296 INFO L175 Difference]: Start difference. First operand has 234 places, 316 transitions, 4297 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:21:06,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 355 transitions, 5246 flow [2024-06-27 22:21:06,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 355 transitions, 5103 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:06,472 INFO L231 Difference]: Finished difference. Result has 236 places, 330 transitions, 4533 flow [2024-06-27 22:21:06,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4533, PETRI_PLACES=236, PETRI_TRANSITIONS=330} [2024-06-27 22:21:06,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 22:21:06,472 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 330 transitions, 4533 flow [2024-06-27 22:21:06,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:06,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:06,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:21:06,473 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:06,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:06,473 INFO L85 PathProgramCache]: Analyzing trace with hash 200185199, now seen corresponding path program 9 times [2024-06-27 22:21:06,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451470921] [2024-06-27 22:21:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:07,554 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 22:21:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451470921] [2024-06-27 22:21:07,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451470921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:07,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:07,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:21:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370824257] [2024-06-27 22:21:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:21:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:21:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:21:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:07,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 330 transitions, 4533 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:07,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:07,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:07,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:08,269 INFO L124 PetriNetUnfolderBase]: 1018/1912 cut-off events. [2024-06-27 22:21:08,269 INFO L125 PetriNetUnfolderBase]: For 65775/65787 co-relation queries the response was YES. [2024-06-27 22:21:08,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12809 conditions, 1912 events. 1018/1912 cut-off events. For 65775/65787 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 11788 event pairs, 174 based on Foata normal form. 4/1871 useless extension candidates. Maximal degree in co-relation 12694. Up to 1503 conditions per place. [2024-06-27 22:21:08,286 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 277 selfloop transitions, 52 changer transitions 0/359 dead transitions. [2024-06-27 22:21:08,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 359 transitions, 5369 flow [2024-06-27 22:21:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:21:08,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:21:08,288 INFO L175 Difference]: Start difference. First operand has 236 places, 330 transitions, 4533 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:21:08,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 359 transitions, 5369 flow [2024-06-27 22:21:08,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 359 transitions, 5180 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:08,474 INFO L231 Difference]: Finished difference. Result has 239 places, 336 transitions, 4579 flow [2024-06-27 22:21:08,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4344, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4579, PETRI_PLACES=239, PETRI_TRANSITIONS=336} [2024-06-27 22:21:08,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 22:21:08,474 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 336 transitions, 4579 flow [2024-06-27 22:21:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:08,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:21:08,475 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:08,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 316370099, now seen corresponding path program 10 times [2024-06-27 22:21:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:08,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640959162] [2024-06-27 22:21:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:09,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:09,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640959162] [2024-06-27 22:21:09,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640959162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:09,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:09,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:21:09,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709529271] [2024-06-27 22:21:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:09,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:21:09,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:21:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:21:09,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:09,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 336 transitions, 4579 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:09,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:09,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:09,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:10,494 INFO L124 PetriNetUnfolderBase]: 1022/1916 cut-off events. [2024-06-27 22:21:10,494 INFO L125 PetriNetUnfolderBase]: For 64605/64657 co-relation queries the response was YES. [2024-06-27 22:21:10,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12611 conditions, 1916 events. 1022/1916 cut-off events. For 64605/64657 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11778 event pairs, 168 based on Foata normal form. 38/1908 useless extension candidates. Maximal degree in co-relation 12495. Up to 1487 conditions per place. [2024-06-27 22:21:10,513 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 66 changer transitions 0/363 dead transitions. [2024-06-27 22:21:10,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 363 transitions, 5407 flow [2024-06-27 22:21:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:21:10,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:21:10,514 INFO L175 Difference]: Start difference. First operand has 239 places, 336 transitions, 4579 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:21:10,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 363 transitions, 5407 flow [2024-06-27 22:21:10,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 363 transitions, 5250 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:10,724 INFO L231 Difference]: Finished difference. Result has 241 places, 340 transitions, 4660 flow [2024-06-27 22:21:10,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4660, PETRI_PLACES=241, PETRI_TRANSITIONS=340} [2024-06-27 22:21:10,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 22:21:10,725 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 340 transitions, 4660 flow [2024-06-27 22:21:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:10,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:10,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:21:10,725 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:10,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash -662251255, now seen corresponding path program 12 times [2024-06-27 22:21:10,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:10,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328909375] [2024-06-27 22:21:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:10,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328909375] [2024-06-27 22:21:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328909375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951056731] [2024-06-27 22:21:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:12,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 340 transitions, 4660 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 22:21:12,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:12,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:12,805 INFO L124 PetriNetUnfolderBase]: 1092/2023 cut-off events. [2024-06-27 22:21:12,805 INFO L125 PetriNetUnfolderBase]: For 60201/60201 co-relation queries the response was YES. [2024-06-27 22:21:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 2023 events. 1092/2023 cut-off events. For 60201/60201 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12317 event pairs, 190 based on Foata normal form. 1/1980 useless extension candidates. Maximal degree in co-relation 12891. Up to 1670 conditions per place. [2024-06-27 22:21:12,826 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 302 selfloop transitions, 64 changer transitions 0/374 dead transitions. [2024-06-27 22:21:12,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 374 transitions, 5613 flow [2024-06-27 22:21:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:21:12,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:21:12,827 INFO L175 Difference]: Start difference. First operand has 241 places, 340 transitions, 4660 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:21:12,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 374 transitions, 5613 flow [2024-06-27 22:21:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 374 transitions, 5399 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:13,054 INFO L231 Difference]: Finished difference. Result has 245 places, 349 transitions, 4761 flow [2024-06-27 22:21:13,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4446, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4761, PETRI_PLACES=245, PETRI_TRANSITIONS=349} [2024-06-27 22:21:13,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 22:21:13,055 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 349 transitions, 4761 flow [2024-06-27 22:21:13,056 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 22:21:13,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:13,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:13,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:21:13,056 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:13,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash 316585301, now seen corresponding path program 13 times [2024-06-27 22:21:13,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:13,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097880368] [2024-06-27 22:21:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:13,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:14,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097880368] [2024-06-27 22:21:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097880368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:14,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520854223] [2024-06-27 22:21:14,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:14,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:14,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 349 transitions, 4761 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 22:21:14,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:14,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:14,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:14,912 INFO L124 PetriNetUnfolderBase]: 1112/2055 cut-off events. [2024-06-27 22:21:14,913 INFO L125 PetriNetUnfolderBase]: For 60317/60317 co-relation queries the response was YES. [2024-06-27 22:21:14,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13086 conditions, 2055 events. 1112/2055 cut-off events. For 60317/60317 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12545 event pairs, 175 based on Foata normal form. 1/2011 useless extension candidates. Maximal degree in co-relation 12967. Up to 1582 conditions per place. [2024-06-27 22:21:14,937 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 252 selfloop transitions, 127 changer transitions 0/387 dead transitions. [2024-06-27 22:21:14,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 387 transitions, 5878 flow [2024-06-27 22:21:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:21:14,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:21:14,939 INFO L175 Difference]: Start difference. First operand has 245 places, 349 transitions, 4761 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:21:14,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 387 transitions, 5878 flow [2024-06-27 22:21:15,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 387 transitions, 5514 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 22:21:15,185 INFO L231 Difference]: Finished difference. Result has 244 places, 361 transitions, 4875 flow [2024-06-27 22:21:15,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4875, PETRI_PLACES=244, PETRI_TRANSITIONS=361} [2024-06-27 22:21:15,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-27 22:21:15,185 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 361 transitions, 4875 flow [2024-06-27 22:21:15,186 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 22:21:15,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:15,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:21:15,186 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:15,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1405535531, now seen corresponding path program 14 times [2024-06-27 22:21:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927699653] [2024-06-27 22:21:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927699653] [2024-06-27 22:21:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927699653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:16,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942636687] [2024-06-27 22:21:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:16,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 361 transitions, 4875 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 22:21:16,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:16,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:17,555 INFO L124 PetriNetUnfolderBase]: 1120/2067 cut-off events. [2024-06-27 22:21:17,555 INFO L125 PetriNetUnfolderBase]: For 61890/61890 co-relation queries the response was YES. [2024-06-27 22:21:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13164 conditions, 2067 events. 1120/2067 cut-off events. For 61890/61890 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12623 event pairs, 175 based on Foata normal form. 1/2023 useless extension candidates. Maximal degree in co-relation 13045. Up to 1591 conditions per place. [2024-06-27 22:21:17,577 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 264 selfloop transitions, 118 changer transitions 0/390 dead transitions. [2024-06-27 22:21:17,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 390 transitions, 5919 flow [2024-06-27 22:21:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:21:17,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 22:21:17,579 INFO L175 Difference]: Start difference. First operand has 244 places, 361 transitions, 4875 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:21:17,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 390 transitions, 5919 flow [2024-06-27 22:21:17,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 390 transitions, 5229 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-27 22:21:17,800 INFO L231 Difference]: Finished difference. Result has 243 places, 364 transitions, 4505 flow [2024-06-27 22:21:17,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4505, PETRI_PLACES=243, PETRI_TRANSITIONS=364} [2024-06-27 22:21:17,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 22:21:17,801 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 364 transitions, 4505 flow [2024-06-27 22:21:17,801 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 22:21:17,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:17,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:17,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:21:17,801 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:17,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash 316577861, now seen corresponding path program 15 times [2024-06-27 22:21:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330370318] [2024-06-27 22:21:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:18,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330370318] [2024-06-27 22:21:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330370318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732709677] [2024-06-27 22:21:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:19,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:19,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 364 transitions, 4505 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 22:21:19,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:19,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:19,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:19,817 INFO L124 PetriNetUnfolderBase]: 1118/2064 cut-off events. [2024-06-27 22:21:19,817 INFO L125 PetriNetUnfolderBase]: For 59292/59292 co-relation queries the response was YES. [2024-06-27 22:21:19,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12883 conditions, 2064 events. 1118/2064 cut-off events. For 59292/59292 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12624 event pairs, 165 based on Foata normal form. 1/2020 useless extension candidates. Maximal degree in co-relation 12763. Up to 1589 conditions per place. [2024-06-27 22:21:19,837 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 258 selfloop transitions, 123 changer transitions 0/389 dead transitions. [2024-06-27 22:21:19,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 389 transitions, 5347 flow [2024-06-27 22:21:19,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:21:19,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:21:19,839 INFO L175 Difference]: Start difference. First operand has 243 places, 364 transitions, 4505 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:21:19,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 389 transitions, 5347 flow [2024-06-27 22:21:20,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 389 transitions, 5027 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:20,053 INFO L231 Difference]: Finished difference. Result has 245 places, 364 transitions, 4441 flow [2024-06-27 22:21:20,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4441, PETRI_PLACES=245, PETRI_TRANSITIONS=364} [2024-06-27 22:21:20,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 22:21:20,054 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 364 transitions, 4441 flow [2024-06-27 22:21:20,054 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 22:21:20,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:20,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:21:20,054 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:20,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1319958834, now seen corresponding path program 1 times [2024-06-27 22:21:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:20,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834075977] [2024-06-27 22:21:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:20,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834075977] [2024-06-27 22:21:21,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834075977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:21,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:21,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:21:21,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287178692] [2024-06-27 22:21:21,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:21,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:21:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:21:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:21:21,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 364 transitions, 4441 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 22:21:21,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:21,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:22,427 INFO L124 PetriNetUnfolderBase]: 1119/2066 cut-off events. [2024-06-27 22:21:22,428 INFO L125 PetriNetUnfolderBase]: For 58408/58408 co-relation queries the response was YES. [2024-06-27 22:21:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12675 conditions, 2066 events. 1119/2066 cut-off events. For 58408/58408 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12738 event pairs, 273 based on Foata normal form. 2/2025 useless extension candidates. Maximal degree in co-relation 12555. Up to 1725 conditions per place. [2024-06-27 22:21:22,445 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 359 selfloop transitions, 31 changer transitions 0/398 dead transitions. [2024-06-27 22:21:22,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 398 transitions, 5431 flow [2024-06-27 22:21:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:21:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:21:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:21:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:21:22,446 INFO L175 Difference]: Start difference. First operand has 245 places, 364 transitions, 4441 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:21:22,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 398 transitions, 5431 flow [2024-06-27 22:21:22,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 398 transitions, 5121 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:21:22,642 INFO L231 Difference]: Finished difference. Result has 246 places, 365 transitions, 4213 flow [2024-06-27 22:21:22,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4213, PETRI_PLACES=246, PETRI_TRANSITIONS=365} [2024-06-27 22:21:22,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 22:21:22,643 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 365 transitions, 4213 flow [2024-06-27 22:21:22,644 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 22:21:22,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:22,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:21:22,644 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:22,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash 342879647, now seen corresponding path program 1 times [2024-06-27 22:21:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618557546] [2024-06-27 22:21:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:22,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:22,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618557546] [2024-06-27 22:21:22,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618557546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:22,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:22,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:21:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844463871] [2024-06-27 22:21:22,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:22,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:21:22,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:21:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:21:22,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-06-27 22:21:22,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 365 transitions, 4213 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 22:21:22,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:22,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-06-27 22:21:22,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:23,098 INFO L124 PetriNetUnfolderBase]: 654/1406 cut-off events. [2024-06-27 22:21:23,099 INFO L125 PetriNetUnfolderBase]: For 47556/47587 co-relation queries the response was YES. [2024-06-27 22:21:23,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 1406 events. 654/1406 cut-off events. For 47556/47587 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9321 event pairs, 122 based on Foata normal form. 99/1411 useless extension candidates. Maximal degree in co-relation 8357. Up to 423 conditions per place. [2024-06-27 22:21:23,115 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 116 selfloop transitions, 58 changer transitions 0/282 dead transitions. [2024-06-27 22:21:23,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 282 transitions, 3610 flow [2024-06-27 22:21:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:21:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:21:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-27 22:21:23,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-06-27 22:21:23,116 INFO L175 Difference]: Start difference. First operand has 246 places, 365 transitions, 4213 flow. Second operand 4 states and 104 transitions. [2024-06-27 22:21:23,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 282 transitions, 3610 flow [2024-06-27 22:21:23,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 282 transitions, 3365 flow, removed 14 selfloop flow, removed 33 redundant places. [2024-06-27 22:21:23,255 INFO L231 Difference]: Finished difference. Result has 217 places, 262 transitions, 3040 flow [2024-06-27 22:21:23,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3040, PETRI_PLACES=217, PETRI_TRANSITIONS=262} [2024-06-27 22:21:23,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 22:21:23,256 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 262 transitions, 3040 flow [2024-06-27 22:21:23,256 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 22:21:23,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:23,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:21:23,256 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:23,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 121991834, now seen corresponding path program 1 times [2024-06-27 22:21:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592537651] [2024-06-27 22:21:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592537651] [2024-06-27 22:21:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592537651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:25,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:25,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:25,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401931526] [2024-06-27 22:21:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:25,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 262 transitions, 3040 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:21:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:25,829 INFO L124 PetriNetUnfolderBase]: 726/1437 cut-off events. [2024-06-27 22:21:25,829 INFO L125 PetriNetUnfolderBase]: For 56963/56976 co-relation queries the response was YES. [2024-06-27 22:21:25,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1437 events. 726/1437 cut-off events. For 56963/56976 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8547 event pairs, 186 based on Foata normal form. 4/1335 useless extension candidates. Maximal degree in co-relation 9156. Up to 1068 conditions per place. [2024-06-27 22:21:25,844 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 83 changer transitions 0/281 dead transitions. [2024-06-27 22:21:25,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 281 transitions, 3948 flow [2024-06-27 22:21:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:21:25,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:21:25,845 INFO L175 Difference]: Start difference. First operand has 217 places, 262 transitions, 3040 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:21:25,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 281 transitions, 3948 flow [2024-06-27 22:21:26,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 281 transitions, 3946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:21:26,021 INFO L231 Difference]: Finished difference. Result has 226 places, 268 transitions, 3299 flow [2024-06-27 22:21:26,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3299, PETRI_PLACES=226, PETRI_TRANSITIONS=268} [2024-06-27 22:21:26,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 22:21:26,021 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 268 transitions, 3299 flow [2024-06-27 22:21:26,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:21:26,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:26,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:21:26,022 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:26,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1314405212, now seen corresponding path program 1 times [2024-06-27 22:21:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35710061] [2024-06-27 22:21:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35710061] [2024-06-27 22:21:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35710061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045580844] [2024-06-27 22:21:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:27,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:27,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 268 transitions, 3299 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 22:21:27,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:27,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:27,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:28,077 INFO L124 PetriNetUnfolderBase]: 908/1716 cut-off events. [2024-06-27 22:21:28,077 INFO L125 PetriNetUnfolderBase]: For 67676/67676 co-relation queries the response was YES. [2024-06-27 22:21:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11209 conditions, 1716 events. 908/1716 cut-off events. For 67676/67676 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10147 event pairs, 179 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 11113. Up to 1399 conditions per place. [2024-06-27 22:21:28,090 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 44 changer transitions 0/291 dead transitions. [2024-06-27 22:21:28,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 4179 flow [2024-06-27 22:21:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:21:28,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:21:28,092 INFO L175 Difference]: Start difference. First operand has 226 places, 268 transitions, 3299 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:21:28,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 4179 flow [2024-06-27 22:21:28,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 291 transitions, 4113 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:28,335 INFO L231 Difference]: Finished difference. Result has 231 places, 272 transitions, 3448 flow [2024-06-27 22:21:28,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3233, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3448, PETRI_PLACES=231, PETRI_TRANSITIONS=272} [2024-06-27 22:21:28,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 22:21:28,336 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 272 transitions, 3448 flow [2024-06-27 22:21:28,336 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 22:21:28,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:28,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:28,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:21:28,336 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:28,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1961406676, now seen corresponding path program 2 times [2024-06-27 22:21:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926686089] [2024-06-27 22:21:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926686089] [2024-06-27 22:21:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926686089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:29,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:29,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510598097] [2024-06-27 22:21:29,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:29,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 272 transitions, 3448 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 22:21:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:29,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:29,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:30,295 INFO L124 PetriNetUnfolderBase]: 905/1719 cut-off events. [2024-06-27 22:21:30,295 INFO L125 PetriNetUnfolderBase]: For 65194/65194 co-relation queries the response was YES. [2024-06-27 22:21:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 1719 events. 905/1719 cut-off events. For 65194/65194 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10131 event pairs, 193 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 11102. Up to 1459 conditions per place. [2024-06-27 22:21:30,310 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2024-06-27 22:21:30,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 288 transitions, 4064 flow [2024-06-27 22:21:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:21:30,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:21:30,312 INFO L175 Difference]: Start difference. First operand has 231 places, 272 transitions, 3448 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:21:30,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 288 transitions, 4064 flow [2024-06-27 22:21:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 288 transitions, 3920 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:30,596 INFO L231 Difference]: Finished difference. Result has 235 places, 272 transitions, 3389 flow [2024-06-27 22:21:30,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3389, PETRI_PLACES=235, PETRI_TRANSITIONS=272} [2024-06-27 22:21:30,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-27 22:21:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 272 transitions, 3389 flow [2024-06-27 22:21:30,597 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 22:21:30,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:30,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:30,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:21:30,598 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:30,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1871740726, now seen corresponding path program 3 times [2024-06-27 22:21:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:30,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287563948] [2024-06-27 22:21:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:30,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:31,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:31,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287563948] [2024-06-27 22:21:31,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287563948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:31,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916545935] [2024-06-27 22:21:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:31,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:31,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:31,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:31,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:31,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:31,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 272 transitions, 3389 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 22:21:31,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:31,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:31,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:32,497 INFO L124 PetriNetUnfolderBase]: 918/1739 cut-off events. [2024-06-27 22:21:32,497 INFO L125 PetriNetUnfolderBase]: For 66846/66846 co-relation queries the response was YES. [2024-06-27 22:21:32,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11299 conditions, 1739 events. 918/1739 cut-off events. For 66846/66846 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 10334 event pairs, 165 based on Foata normal form. 2/1640 useless extension candidates. Maximal degree in co-relation 11199. Up to 1390 conditions per place. [2024-06-27 22:21:32,510 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 243 selfloop transitions, 43 changer transitions 0/295 dead transitions. [2024-06-27 22:21:32,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 295 transitions, 4104 flow [2024-06-27 22:21:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:21:32,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:21:32,512 INFO L175 Difference]: Start difference. First operand has 235 places, 272 transitions, 3389 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:21:32,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 295 transitions, 4104 flow [2024-06-27 22:21:32,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 295 transitions, 4009 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:32,703 INFO L231 Difference]: Finished difference. Result has 236 places, 274 transitions, 3454 flow [2024-06-27 22:21:32,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3454, PETRI_PLACES=236, PETRI_TRANSITIONS=274} [2024-06-27 22:21:32,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 22:21:32,704 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 274 transitions, 3454 flow [2024-06-27 22:21:32,704 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 22:21:32,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:32,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:21:32,704 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1268171280, now seen corresponding path program 4 times [2024-06-27 22:21:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673719406] [2024-06-27 22:21:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:34,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673719406] [2024-06-27 22:21:34,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673719406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:34,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:34,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:34,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559140949] [2024-06-27 22:21:34,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:34,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:34,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:34,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:34,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 274 transitions, 3454 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 22:21:34,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:34,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:35,133 INFO L124 PetriNetUnfolderBase]: 931/1766 cut-off events. [2024-06-27 22:21:35,133 INFO L125 PetriNetUnfolderBase]: For 69801/69801 co-relation queries the response was YES. [2024-06-27 22:21:35,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 1766 events. 931/1766 cut-off events. For 69801/69801 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10533 event pairs, 201 based on Foata normal form. 2/1668 useless extension candidates. Maximal degree in co-relation 11460. Up to 1477 conditions per place. [2024-06-27 22:21:35,150 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 52 changer transitions 0/292 dead transitions. [2024-06-27 22:21:35,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 292 transitions, 4146 flow [2024-06-27 22:21:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:21:35,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:21:35,151 INFO L175 Difference]: Start difference. First operand has 236 places, 274 transitions, 3454 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:21:35,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 292 transitions, 4146 flow [2024-06-27 22:21:35,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 292 transitions, 4008 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:35,408 INFO L231 Difference]: Finished difference. Result has 238 places, 276 transitions, 3496 flow [2024-06-27 22:21:35,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3496, PETRI_PLACES=238, PETRI_TRANSITIONS=276} [2024-06-27 22:21:35,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-27 22:21:35,409 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 276 transitions, 3496 flow [2024-06-27 22:21:35,409 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 22:21:35,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:35,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:35,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:21:35,409 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:35,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1267993650, now seen corresponding path program 5 times [2024-06-27 22:21:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:35,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227914406] [2024-06-27 22:21:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227914406] [2024-06-27 22:21:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227914406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:37,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:37,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847342641] [2024-06-27 22:21:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:37,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:37,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 276 transitions, 3496 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 22:21:37,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:37,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:37,810 INFO L124 PetriNetUnfolderBase]: 960/1819 cut-off events. [2024-06-27 22:21:37,811 INFO L125 PetriNetUnfolderBase]: For 78167/78167 co-relation queries the response was YES. [2024-06-27 22:21:37,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1819 events. 960/1819 cut-off events. For 78167/78167 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10959 event pairs, 197 based on Foata normal form. 2/1722 useless extension candidates. Maximal degree in co-relation 11965. Up to 1459 conditions per place. [2024-06-27 22:21:37,827 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 58 changer transitions 0/299 dead transitions. [2024-06-27 22:21:37,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 299 transitions, 4426 flow [2024-06-27 22:21:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:21:37,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:21:37,828 INFO L175 Difference]: Start difference. First operand has 238 places, 276 transitions, 3496 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:21:37,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 299 transitions, 4426 flow [2024-06-27 22:21:38,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 299 transitions, 4264 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:38,097 INFO L231 Difference]: Finished difference. Result has 240 places, 280 transitions, 3600 flow [2024-06-27 22:21:38,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3334, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3600, PETRI_PLACES=240, PETRI_TRANSITIONS=280} [2024-06-27 22:21:38,098 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 22:21:38,098 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 280 transitions, 3600 flow [2024-06-27 22:21:38,098 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 22:21:38,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:38,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:21:38,099 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:38,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1274427390, now seen corresponding path program 6 times [2024-06-27 22:21:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:38,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817075371] [2024-06-27 22:21:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:39,672 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 22:21:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817075371] [2024-06-27 22:21:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817075371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864303417] [2024-06-27 22:21:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:39,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:39,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 280 transitions, 3600 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 22:21:39,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:39,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:40,429 INFO L124 PetriNetUnfolderBase]: 957/1814 cut-off events. [2024-06-27 22:21:40,429 INFO L125 PetriNetUnfolderBase]: For 74991/74991 co-relation queries the response was YES. [2024-06-27 22:21:40,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 1814 events. 957/1814 cut-off events. For 74991/74991 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10912 event pairs, 203 based on Foata normal form. 2/1714 useless extension candidates. Maximal degree in co-relation 11804. Up to 1523 conditions per place. [2024-06-27 22:21:40,445 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 55 changer transitions 0/296 dead transitions. [2024-06-27 22:21:40,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 296 transitions, 4234 flow [2024-06-27 22:21:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:21:40,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:21:40,447 INFO L175 Difference]: Start difference. First operand has 240 places, 280 transitions, 3600 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:21:40,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 296 transitions, 4234 flow [2024-06-27 22:21:40,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 296 transitions, 4048 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:40,696 INFO L231 Difference]: Finished difference. Result has 244 places, 280 transitions, 3530 flow [2024-06-27 22:21:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=244, PETRI_TRANSITIONS=280} [2024-06-27 22:21:40,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-27 22:21:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 280 transitions, 3530 flow [2024-06-27 22:21:40,697 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 22:21:40,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:40,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:40,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:21:40,697 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1961413620, now seen corresponding path program 2 times [2024-06-27 22:21:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528717918] [2024-06-27 22:21:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:41,995 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 22:21:41,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528717918] [2024-06-27 22:21:41,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528717918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:41,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:41,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:41,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284223080] [2024-06-27 22:21:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:41,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:42,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:42,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 280 transitions, 3530 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 22:21:42,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:42,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:42,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:42,659 INFO L124 PetriNetUnfolderBase]: 963/1823 cut-off events. [2024-06-27 22:21:42,659 INFO L125 PetriNetUnfolderBase]: For 72280/72280 co-relation queries the response was YES. [2024-06-27 22:21:42,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11894 conditions, 1823 events. 963/1823 cut-off events. For 72280/72280 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10952 event pairs, 202 based on Foata normal form. 1/1720 useless extension candidates. Maximal degree in co-relation 11789. Up to 1565 conditions per place. [2024-06-27 22:21:42,676 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 244 selfloop transitions, 45 changer transitions 0/298 dead transitions. [2024-06-27 22:21:42,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 298 transitions, 4198 flow [2024-06-27 22:21:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:21:42,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:21:42,677 INFO L175 Difference]: Start difference. First operand has 244 places, 280 transitions, 3530 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:21:42,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 298 transitions, 4198 flow [2024-06-27 22:21:42,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 298 transitions, 4070 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:42,963 INFO L231 Difference]: Finished difference. Result has 245 places, 282 transitions, 3535 flow [2024-06-27 22:21:42,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3535, PETRI_PLACES=245, PETRI_TRANSITIONS=282} [2024-06-27 22:21:42,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 22:21:42,964 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 282 transitions, 3535 flow [2024-06-27 22:21:42,964 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 22:21:42,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:42,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:21:42,964 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:42,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 627849820, now seen corresponding path program 1 times [2024-06-27 22:21:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310828887] [2024-06-27 22:21:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:42,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:44,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310828887] [2024-06-27 22:21:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310828887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:44,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:44,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:21:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876990826] [2024-06-27 22:21:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:21:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:21:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:21:44,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:44,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 282 transitions, 3535 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:44,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:44,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:44,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:44,843 INFO L124 PetriNetUnfolderBase]: 811/1600 cut-off events. [2024-06-27 22:21:44,843 INFO L125 PetriNetUnfolderBase]: For 73280/73296 co-relation queries the response was YES. [2024-06-27 22:21:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1600 events. 811/1600 cut-off events. For 73280/73296 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9776 event pairs, 192 based on Foata normal form. 3/1485 useless extension candidates. Maximal degree in co-relation 10479. Up to 1342 conditions per place. [2024-06-27 22:21:44,858 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 247 selfloop transitions, 34 changer transitions 0/295 dead transitions. [2024-06-27 22:21:44,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 295 transitions, 4151 flow [2024-06-27 22:21:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:21:44,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:21:44,859 INFO L175 Difference]: Start difference. First operand has 245 places, 282 transitions, 3535 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:21:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 295 transitions, 4151 flow [2024-06-27 22:21:45,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 295 transitions, 4046 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:45,181 INFO L231 Difference]: Finished difference. Result has 247 places, 284 transitions, 3535 flow [2024-06-27 22:21:45,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3535, PETRI_PLACES=247, PETRI_TRANSITIONS=284} [2024-06-27 22:21:45,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 22:21:45,182 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 284 transitions, 3535 flow [2024-06-27 22:21:45,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:45,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:45,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:45,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:21:45,183 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:45,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1890860058, now seen corresponding path program 3 times [2024-06-27 22:21:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996274018] [2024-06-27 22:21:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:45,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:46,514 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 22:21:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996274018] [2024-06-27 22:21:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996274018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:46,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:46,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153619529] [2024-06-27 22:21:46,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:46,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:46,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 284 transitions, 3535 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:46,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:46,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:47,087 INFO L124 PetriNetUnfolderBase]: 817/1603 cut-off events. [2024-06-27 22:21:47,087 INFO L125 PetriNetUnfolderBase]: For 74508/74521 co-relation queries the response was YES. [2024-06-27 22:21:47,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10638 conditions, 1603 events. 817/1603 cut-off events. For 74508/74521 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9761 event pairs, 198 based on Foata normal form. 8/1493 useless extension candidates. Maximal degree in co-relation 10531. Up to 1222 conditions per place. [2024-06-27 22:21:47,105 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 170 selfloop transitions, 114 changer transitions 0/298 dead transitions. [2024-06-27 22:21:47,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 298 transitions, 4307 flow [2024-06-27 22:21:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:21:47,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:21:47,106 INFO L175 Difference]: Start difference. First operand has 247 places, 284 transitions, 3535 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:21:47,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 298 transitions, 4307 flow [2024-06-27 22:21:47,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 298 transitions, 4222 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:47,438 INFO L231 Difference]: Finished difference. Result has 249 places, 286 transitions, 3711 flow [2024-06-27 22:21:47,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3711, PETRI_PLACES=249, PETRI_TRANSITIONS=286} [2024-06-27 22:21:47,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 22:21:47,438 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 286 transitions, 3711 flow [2024-06-27 22:21:47,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:47,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:47,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:47,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:21:47,439 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:47,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1890868428, now seen corresponding path program 4 times [2024-06-27 22:21:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518905593] [2024-06-27 22:21:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:47,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:48,848 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 22:21:48,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518905593] [2024-06-27 22:21:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518905593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:48,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:21:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048357652] [2024-06-27 22:21:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:48,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:21:48,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:21:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:21:48,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:48,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 286 transitions, 3711 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:48,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:48,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:48,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:49,475 INFO L124 PetriNetUnfolderBase]: 823/1612 cut-off events. [2024-06-27 22:21:49,475 INFO L125 PetriNetUnfolderBase]: For 76802/76815 co-relation queries the response was YES. [2024-06-27 22:21:49,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10912 conditions, 1612 events. 823/1612 cut-off events. For 76802/76815 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9781 event pairs, 198 based on Foata normal form. 8/1499 useless extension candidates. Maximal degree in co-relation 10804. Up to 1230 conditions per place. [2024-06-27 22:21:49,490 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 104 changer transitions 0/300 dead transitions. [2024-06-27 22:21:49,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 300 transitions, 4493 flow [2024-06-27 22:21:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:21:49,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:21:49,491 INFO L175 Difference]: Start difference. First operand has 249 places, 286 transitions, 3711 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:21:49,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 300 transitions, 4493 flow [2024-06-27 22:21:49,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 300 transitions, 4258 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:49,780 INFO L231 Difference]: Finished difference. Result has 252 places, 288 transitions, 3723 flow [2024-06-27 22:21:49,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3484, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3723, PETRI_PLACES=252, PETRI_TRANSITIONS=288} [2024-06-27 22:21:49,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 22:21:49,781 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 288 transitions, 3723 flow [2024-06-27 22:21:49,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:49,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:49,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:21:49,781 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:49,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash 627610500, now seen corresponding path program 5 times [2024-06-27 22:21:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246828974] [2024-06-27 22:21:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:51,407 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 22:21:51,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246828974] [2024-06-27 22:21:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246828974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:51,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:51,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:51,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552073965] [2024-06-27 22:21:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:51,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:21:51,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 288 transitions, 3723 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:21:51,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:51,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:21:51,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:52,211 INFO L124 PetriNetUnfolderBase]: 821/1609 cut-off events. [2024-06-27 22:21:52,211 INFO L125 PetriNetUnfolderBase]: For 75310/75323 co-relation queries the response was YES. [2024-06-27 22:21:52,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10769 conditions, 1609 events. 821/1609 cut-off events. For 75310/75323 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9802 event pairs, 198 based on Foata normal form. 8/1496 useless extension candidates. Maximal degree in co-relation 10660. Up to 1228 conditions per place. [2024-06-27 22:21:52,229 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 191 selfloop transitions, 95 changer transitions 0/300 dead transitions. [2024-06-27 22:21:52,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 300 transitions, 4475 flow [2024-06-27 22:21:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:21:52,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:21:52,230 INFO L175 Difference]: Start difference. First operand has 252 places, 288 transitions, 3723 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:21:52,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 300 transitions, 4475 flow [2024-06-27 22:21:52,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 300 transitions, 4294 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:52,569 INFO L231 Difference]: Finished difference. Result has 255 places, 288 transitions, 3739 flow [2024-06-27 22:21:52,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3739, PETRI_PLACES=255, PETRI_TRANSITIONS=288} [2024-06-27 22:21:52,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 22:21:52,570 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 288 transitions, 3739 flow [2024-06-27 22:21:52,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:21:52,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:52,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:52,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:21:52,570 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:52,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 113671494, now seen corresponding path program 7 times [2024-06-27 22:21:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132317419] [2024-06-27 22:21:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:54,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132317419] [2024-06-27 22:21:54,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132317419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:54,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118690507] [2024-06-27 22:21:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:54,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 288 transitions, 3739 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 22:21:54,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:54,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:54,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:54,853 INFO L124 PetriNetUnfolderBase]: 992/1871 cut-off events. [2024-06-27 22:21:54,854 INFO L125 PetriNetUnfolderBase]: For 82048/82048 co-relation queries the response was YES. [2024-06-27 22:21:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12388 conditions, 1871 events. 992/1871 cut-off events. For 82048/82048 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11304 event pairs, 206 based on Foata normal form. 2/1766 useless extension candidates. Maximal degree in co-relation 12278. Up to 1489 conditions per place. [2024-06-27 22:21:54,873 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 210 selfloop transitions, 87 changer transitions 0/306 dead transitions. [2024-06-27 22:21:54,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 306 transitions, 4469 flow [2024-06-27 22:21:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:21:54,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:21:54,874 INFO L175 Difference]: Start difference. First operand has 255 places, 288 transitions, 3739 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:21:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 306 transitions, 4469 flow [2024-06-27 22:21:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 306 transitions, 4295 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:55,228 INFO L231 Difference]: Finished difference. Result has 257 places, 290 transitions, 3822 flow [2024-06-27 22:21:55,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3565, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3822, PETRI_PLACES=257, PETRI_TRANSITIONS=290} [2024-06-27 22:21:55,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 22:21:55,229 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 290 transitions, 3822 flow [2024-06-27 22:21:55,229 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 22:21:55,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:55,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:21:55,230 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:55,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 752090276, now seen corresponding path program 8 times [2024-06-27 22:21:55,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101462866] [2024-06-27 22:21:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101462866] [2024-06-27 22:21:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101462866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:56,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291763570] [2024-06-27 22:21:56,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:56,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:56,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:56,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 290 transitions, 3822 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 22:21:56,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:56,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:56,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:57,530 INFO L124 PetriNetUnfolderBase]: 1005/1895 cut-off events. [2024-06-27 22:21:57,530 INFO L125 PetriNetUnfolderBase]: For 85369/85369 co-relation queries the response was YES. [2024-06-27 22:21:57,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12627 conditions, 1895 events. 1005/1895 cut-off events. For 85369/85369 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11489 event pairs, 207 based on Foata normal form. 2/1789 useless extension candidates. Maximal degree in co-relation 12516. Up to 1512 conditions per place. [2024-06-27 22:21:57,550 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 224 selfloop transitions, 75 changer transitions 0/308 dead transitions. [2024-06-27 22:21:57,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 308 transitions, 4560 flow [2024-06-27 22:21:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:21:57,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:21:57,552 INFO L175 Difference]: Start difference. First operand has 257 places, 290 transitions, 3822 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:21:57,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 308 transitions, 4560 flow [2024-06-27 22:21:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 308 transitions, 4319 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:57,918 INFO L231 Difference]: Finished difference. Result has 259 places, 292 transitions, 3818 flow [2024-06-27 22:21:57,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3581, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3818, PETRI_PLACES=259, PETRI_TRANSITIONS=292} [2024-06-27 22:21:57,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-27 22:21:57,918 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 292 transitions, 3818 flow [2024-06-27 22:21:57,918 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 22:21:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:57,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:57,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:21:57,919 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:57,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 745834166, now seen corresponding path program 9 times [2024-06-27 22:21:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640047214] [2024-06-27 22:21:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:59,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640047214] [2024-06-27 22:21:59,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640047214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:59,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:59,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959560195] [2024-06-27 22:21:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:59,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:59,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:59,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:21:59,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 292 transitions, 3818 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 22:21:59,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:59,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:21:59,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:00,320 INFO L124 PetriNetUnfolderBase]: 1018/1917 cut-off events. [2024-06-27 22:22:00,320 INFO L125 PetriNetUnfolderBase]: For 88463/88463 co-relation queries the response was YES. [2024-06-27 22:22:00,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12751 conditions, 1917 events. 1018/1917 cut-off events. For 88463/88463 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11642 event pairs, 196 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 12639. Up to 1535 conditions per place. [2024-06-27 22:22:00,341 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 225 selfloop transitions, 76 changer transitions 0/310 dead transitions. [2024-06-27 22:22:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 310 transitions, 4564 flow [2024-06-27 22:22:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:22:00,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:22:00,343 INFO L175 Difference]: Start difference. First operand has 259 places, 292 transitions, 3818 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:22:00,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 310 transitions, 4564 flow [2024-06-27 22:22:00,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 310 transitions, 4343 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:00,779 INFO L231 Difference]: Finished difference. Result has 261 places, 294 transitions, 3840 flow [2024-06-27 22:22:00,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3840, PETRI_PLACES=261, PETRI_TRANSITIONS=294} [2024-06-27 22:22:00,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 22:22:00,780 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 294 transitions, 3840 flow [2024-06-27 22:22:00,780 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 22:22:00,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:00,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:22:00,780 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:00,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1328253258, now seen corresponding path program 10 times [2024-06-27 22:22:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904937508] [2024-06-27 22:22:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:02,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:02,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904937508] [2024-06-27 22:22:02,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904937508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:02,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828696397] [2024-06-27 22:22:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:02,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:02,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 294 transitions, 3840 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 22:22:02,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:02,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:02,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:03,205 INFO L124 PetriNetUnfolderBase]: 1031/1943 cut-off events. [2024-06-27 22:22:03,205 INFO L125 PetriNetUnfolderBase]: For 90722/90722 co-relation queries the response was YES. [2024-06-27 22:22:03,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12906 conditions, 1943 events. 1031/1943 cut-off events. For 90722/90722 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11864 event pairs, 196 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 12793. Up to 1492 conditions per place. [2024-06-27 22:22:03,226 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 222 selfloop transitions, 83 changer transitions 0/314 dead transitions. [2024-06-27 22:22:03,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 314 transitions, 4606 flow [2024-06-27 22:22:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:22:03,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:22:03,228 INFO L175 Difference]: Start difference. First operand has 261 places, 294 transitions, 3840 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:22:03,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 314 transitions, 4606 flow [2024-06-27 22:22:03,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 314 transitions, 4379 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:03,589 INFO L231 Difference]: Finished difference. Result has 263 places, 296 transitions, 3874 flow [2024-06-27 22:22:03,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3874, PETRI_PLACES=263, PETRI_TRANSITIONS=296} [2024-06-27 22:22:03,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-27 22:22:03,590 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 296 transitions, 3874 flow [2024-06-27 22:22:03,590 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 22:22:03,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:03,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:03,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:22:03,591 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:03,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1099928524, now seen corresponding path program 6 times [2024-06-27 22:22:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764677909] [2024-06-27 22:22:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764677909] [2024-06-27 22:22:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764677909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660529812] [2024-06-27 22:22:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:04,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:04,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 296 transitions, 3874 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:04,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:04,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:04,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:05,289 INFO L124 PetriNetUnfolderBase]: 877/1710 cut-off events. [2024-06-27 22:22:05,289 INFO L125 PetriNetUnfolderBase]: For 94029/94042 co-relation queries the response was YES. [2024-06-27 22:22:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11684 conditions, 1710 events. 877/1710 cut-off events. For 94029/94042 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10546 event pairs, 218 based on Foata normal form. 8/1590 useless extension candidates. Maximal degree in co-relation 11570. Up to 1225 conditions per place. [2024-06-27 22:22:05,307 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 188 selfloop transitions, 114 changer transitions 0/316 dead transitions. [2024-06-27 22:22:05,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 316 transitions, 5118 flow [2024-06-27 22:22:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:22:05,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:22:05,308 INFO L175 Difference]: Start difference. First operand has 263 places, 296 transitions, 3874 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:22:05,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 316 transitions, 5118 flow [2024-06-27 22:22:05,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 316 transitions, 4873 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:05,684 INFO L231 Difference]: Finished difference. Result has 264 places, 304 transitions, 3994 flow [2024-06-27 22:22:05,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3994, PETRI_PLACES=264, PETRI_TRANSITIONS=304} [2024-06-27 22:22:05,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 22:22:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 304 transitions, 3994 flow [2024-06-27 22:22:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:05,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:05,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:22:05,685 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:05,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash 409136648, now seen corresponding path program 7 times [2024-06-27 22:22:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111594998] [2024-06-27 22:22:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111594998] [2024-06-27 22:22:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111594998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:07,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534644594] [2024-06-27 22:22:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:07,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:07,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:07,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 304 transitions, 3994 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 22:22:07,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:07,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:07,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:07,867 INFO L124 PetriNetUnfolderBase]: 1059/1994 cut-off events. [2024-06-27 22:22:07,868 INFO L125 PetriNetUnfolderBase]: For 96748/96748 co-relation queries the response was YES. [2024-06-27 22:22:07,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13365 conditions, 1994 events. 1059/1994 cut-off events. For 96748/96748 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12244 event pairs, 281 based on Foata normal form. 1/1887 useless extension candidates. Maximal degree in co-relation 13250. Up to 1757 conditions per place. [2024-06-27 22:22:07,887 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 295 selfloop transitions, 18 changer transitions 0/322 dead transitions. [2024-06-27 22:22:07,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 322 transitions, 4718 flow [2024-06-27 22:22:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:22:07,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:22:07,888 INFO L175 Difference]: Start difference. First operand has 264 places, 304 transitions, 3994 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:22:07,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 322 transitions, 4718 flow [2024-06-27 22:22:08,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 322 transitions, 4604 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 22:22:08,291 INFO L231 Difference]: Finished difference. Result has 271 places, 306 transitions, 3961 flow [2024-06-27 22:22:08,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3961, PETRI_PLACES=271, PETRI_TRANSITIONS=306} [2024-06-27 22:22:08,291 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 22:22:08,291 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 306 transitions, 3961 flow [2024-06-27 22:22:08,291 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 22:22:08,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:08,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:08,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:22:08,292 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:08,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 399017628, now seen corresponding path program 2 times [2024-06-27 22:22:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:08,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083306540] [2024-06-27 22:22:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:09,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083306540] [2024-06-27 22:22:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083306540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543335473] [2024-06-27 22:22:09,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:09,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:09,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:09,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:09,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 306 transitions, 3961 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:09,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:10,137 INFO L124 PetriNetUnfolderBase]: 885/1730 cut-off events. [2024-06-27 22:22:10,137 INFO L125 PetriNetUnfolderBase]: For 96219/96235 co-relation queries the response was YES. [2024-06-27 22:22:10,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11746 conditions, 1730 events. 885/1730 cut-off events. For 96219/96235 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10755 event pairs, 224 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 11629. Up to 1424 conditions per place. [2024-06-27 22:22:10,154 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 251 selfloop transitions, 52 changer transitions 0/317 dead transitions. [2024-06-27 22:22:10,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 317 transitions, 4619 flow [2024-06-27 22:22:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:22:10,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:22:10,156 INFO L175 Difference]: Start difference. First operand has 271 places, 306 transitions, 3961 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:22:10,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 317 transitions, 4619 flow [2024-06-27 22:22:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 317 transitions, 4568 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:10,546 INFO L231 Difference]: Finished difference. Result has 273 places, 308 transitions, 4055 flow [2024-06-27 22:22:10,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4055, PETRI_PLACES=273, PETRI_TRANSITIONS=308} [2024-06-27 22:22:10,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 22:22:10,547 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 308 transitions, 4055 flow [2024-06-27 22:22:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:10,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:22:10,547 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash 752327860, now seen corresponding path program 8 times [2024-06-27 22:22:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249083420] [2024-06-27 22:22:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:12,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:12,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249083420] [2024-06-27 22:22:12,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249083420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:12,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777545252] [2024-06-27 22:22:12,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:12,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:12,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:12,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 308 transitions, 4055 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:12,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:12,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:12,730 INFO L124 PetriNetUnfolderBase]: 895/1741 cut-off events. [2024-06-27 22:22:12,730 INFO L125 PetriNetUnfolderBase]: For 102187/102200 co-relation queries the response was YES. [2024-06-27 22:22:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 1741 events. 895/1741 cut-off events. For 102187/102200 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10758 event pairs, 218 based on Foata normal form. 3/1612 useless extension candidates. Maximal degree in co-relation 11927. Up to 1248 conditions per place. [2024-06-27 22:22:12,748 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 109 changer transitions 0/325 dead transitions. [2024-06-27 22:22:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 325 transitions, 5445 flow [2024-06-27 22:22:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:12,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:22:12,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:22:12,749 INFO L175 Difference]: Start difference. First operand has 273 places, 308 transitions, 4055 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:22:12,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 325 transitions, 5445 flow [2024-06-27 22:22:13,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 325 transitions, 5320 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:13,121 INFO L231 Difference]: Finished difference. Result has 275 places, 312 transitions, 4221 flow [2024-06-27 22:22:13,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4221, PETRI_PLACES=275, PETRI_TRANSITIONS=312} [2024-06-27 22:22:13,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 22:22:13,122 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 312 transitions, 4221 flow [2024-06-27 22:22:13,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:13,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:13,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:22:13,122 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:13,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 409136958, now seen corresponding path program 3 times [2024-06-27 22:22:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535917232] [2024-06-27 22:22:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:14,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535917232] [2024-06-27 22:22:14,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535917232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:14,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:14,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:14,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006257512] [2024-06-27 22:22:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:14,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:14,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:14,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:14,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 312 transitions, 4221 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 22:22:14,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:14,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:14,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:15,254 INFO L124 PetriNetUnfolderBase]: 1085/2039 cut-off events. [2024-06-27 22:22:15,254 INFO L125 PetriNetUnfolderBase]: For 107153/107153 co-relation queries the response was YES. [2024-06-27 22:22:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14037 conditions, 2039 events. 1085/2039 cut-off events. For 107153/107153 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12568 event pairs, 252 based on Foata normal form. 1/1925 useless extension candidates. Maximal degree in co-relation 13918. Up to 1796 conditions per place. [2024-06-27 22:22:15,275 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 303 selfloop transitions, 18 changer transitions 0/330 dead transitions. [2024-06-27 22:22:15,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 330 transitions, 4961 flow [2024-06-27 22:22:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:22:15,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:22:15,276 INFO L175 Difference]: Start difference. First operand has 275 places, 312 transitions, 4221 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:22:15,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 330 transitions, 4961 flow [2024-06-27 22:22:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 330 transitions, 4593 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:15,687 INFO L231 Difference]: Finished difference. Result has 277 places, 314 transitions, 3934 flow [2024-06-27 22:22:15,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3934, PETRI_PLACES=277, PETRI_TRANSITIONS=314} [2024-06-27 22:22:15,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 22:22:15,688 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 314 transitions, 3934 flow [2024-06-27 22:22:15,688 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 22:22:15,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:15,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:15,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:22:15,688 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:15,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 399017318, now seen corresponding path program 9 times [2024-06-27 22:22:15,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:15,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827839263] [2024-06-27 22:22:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:16,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:16,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827839263] [2024-06-27 22:22:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827839263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:16,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:16,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:16,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609159423] [2024-06-27 22:22:16,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:16,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:16,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:16,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:16,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 314 transitions, 3934 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:16,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:16,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:16,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:17,471 INFO L124 PetriNetUnfolderBase]: 903/1753 cut-off events. [2024-06-27 22:22:17,471 INFO L125 PetriNetUnfolderBase]: For 105562/105575 co-relation queries the response was YES. [2024-06-27 22:22:17,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11896 conditions, 1753 events. 903/1753 cut-off events. For 105562/105575 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10914 event pairs, 218 based on Foata normal form. 8/1627 useless extension candidates. Maximal degree in co-relation 11777. Up to 1259 conditions per place. [2024-06-27 22:22:17,485 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 174 selfloop transitions, 139 changer transitions 0/327 dead transitions. [2024-06-27 22:22:17,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 327 transitions, 4962 flow [2024-06-27 22:22:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:22:17,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:22:17,486 INFO L175 Difference]: Start difference. First operand has 277 places, 314 transitions, 3934 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:22:17,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 327 transitions, 4962 flow [2024-06-27 22:22:17,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 327 transitions, 4901 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:17,913 INFO L231 Difference]: Finished difference. Result has 278 places, 316 transitions, 4190 flow [2024-06-27 22:22:17,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4190, PETRI_PLACES=278, PETRI_TRANSITIONS=316} [2024-06-27 22:22:17,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-27 22:22:17,914 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 316 transitions, 4190 flow [2024-06-27 22:22:17,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:17,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:17,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:17,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:22:17,914 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:17,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1735361820, now seen corresponding path program 4 times [2024-06-27 22:22:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118058625] [2024-06-27 22:22:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:19,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:19,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118058625] [2024-06-27 22:22:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118058625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438636326] [2024-06-27 22:22:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:19,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:19,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 316 transitions, 4190 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:19,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:19,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:19,787 INFO L124 PetriNetUnfolderBase]: 907/1765 cut-off events. [2024-06-27 22:22:19,787 INFO L125 PetriNetUnfolderBase]: For 109171/109187 co-relation queries the response was YES. [2024-06-27 22:22:19,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12276 conditions, 1765 events. 907/1765 cut-off events. For 109171/109187 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 11000 event pairs, 219 based on Foata normal form. 3/1634 useless extension candidates. Maximal degree in co-relation 12156. Up to 1457 conditions per place. [2024-06-27 22:22:19,805 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 265 selfloop transitions, 48 changer transitions 0/327 dead transitions. [2024-06-27 22:22:19,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 4876 flow [2024-06-27 22:22:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:22:19,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:22:19,806 INFO L175 Difference]: Start difference. First operand has 278 places, 316 transitions, 4190 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:22:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 4876 flow [2024-06-27 22:22:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 327 transitions, 4564 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:20,232 INFO L231 Difference]: Finished difference. Result has 281 places, 318 transitions, 4023 flow [2024-06-27 22:22:20,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3878, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4023, PETRI_PLACES=281, PETRI_TRANSITIONS=318} [2024-06-27 22:22:20,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 22:22:20,233 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 318 transitions, 4023 flow [2024-06-27 22:22:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:20,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:20,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:20,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:22:20,233 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:20,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1100167534, now seen corresponding path program 10 times [2024-06-27 22:22:20,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:20,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392671968] [2024-06-27 22:22:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392671968] [2024-06-27 22:22:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392671968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:21,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275674110] [2024-06-27 22:22:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:21,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:21,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 318 transitions, 4023 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:21,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:21,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:21,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:22,386 INFO L124 PetriNetUnfolderBase]: 911/1765 cut-off events. [2024-06-27 22:22:22,386 INFO L125 PetriNetUnfolderBase]: For 109780/109793 co-relation queries the response was YES. [2024-06-27 22:22:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12065 conditions, 1765 events. 911/1765 cut-off events. For 109780/109793 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10922 event pairs, 218 based on Foata normal form. 8/1637 useless extension candidates. Maximal degree in co-relation 11944. Up to 1270 conditions per place. [2024-06-27 22:22:22,406 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 190 selfloop transitions, 127 changer transitions 0/331 dead transitions. [2024-06-27 22:22:22,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 331 transitions, 5057 flow [2024-06-27 22:22:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:22:22,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:22:22,407 INFO L175 Difference]: Start difference. First operand has 281 places, 318 transitions, 4023 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:22:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 331 transitions, 5057 flow [2024-06-27 22:22:22,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 331 transitions, 4932 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:22,859 INFO L231 Difference]: Finished difference. Result has 283 places, 320 transitions, 4181 flow [2024-06-27 22:22:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4181, PETRI_PLACES=283, PETRI_TRANSITIONS=320} [2024-06-27 22:22:22,860 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-27 22:22:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 320 transitions, 4181 flow [2024-06-27 22:22:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:22,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:22,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:22,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:22:22,860 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:22,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2030937210, now seen corresponding path program 5 times [2024-06-27 22:22:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449312197] [2024-06-27 22:22:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:24,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:24,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449312197] [2024-06-27 22:22:24,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449312197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:24,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:24,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:24,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097806595] [2024-06-27 22:22:24,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:24,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:24,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:24,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:24,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:24,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:24,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 320 transitions, 4181 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 22:22:24,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:24,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:24,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:25,190 INFO L124 PetriNetUnfolderBase]: 1109/2075 cut-off events. [2024-06-27 22:22:25,190 INFO L125 PetriNetUnfolderBase]: For 114488/114488 co-relation queries the response was YES. [2024-06-27 22:22:25,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14132 conditions, 2075 events. 1109/2075 cut-off events. For 114488/114488 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12762 event pairs, 252 based on Foata normal form. 1/1957 useless extension candidates. Maximal degree in co-relation 14010. Up to 1822 conditions per place. [2024-06-27 22:22:25,212 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 309 selfloop transitions, 22 changer transitions 0/340 dead transitions. [2024-06-27 22:22:25,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 4957 flow [2024-06-27 22:22:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:22:25,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 22:22:25,214 INFO L175 Difference]: Start difference. First operand has 283 places, 320 transitions, 4181 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:22:25,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 4957 flow [2024-06-27 22:22:25,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 340 transitions, 4710 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:25,711 INFO L231 Difference]: Finished difference. Result has 287 places, 322 transitions, 4031 flow [2024-06-27 22:22:25,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4031, PETRI_PLACES=287, PETRI_TRANSITIONS=322} [2024-06-27 22:22:25,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:22:25,712 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 322 transitions, 4031 flow [2024-06-27 22:22:25,712 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 22:22:25,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:25,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:25,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:22:25,712 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:25,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash 399008948, now seen corresponding path program 11 times [2024-06-27 22:22:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:25,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455791724] [2024-06-27 22:22:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:25,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:27,005 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 22:22:27,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:27,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455791724] [2024-06-27 22:22:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455791724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:27,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:27,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:27,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760265811] [2024-06-27 22:22:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:27,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:27,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:27,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 322 transitions, 4031 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:27,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:27,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:27,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:27,690 INFO L124 PetriNetUnfolderBase]: 913/1768 cut-off events. [2024-06-27 22:22:27,690 INFO L125 PetriNetUnfolderBase]: For 110156/110169 co-relation queries the response was YES. [2024-06-27 22:22:27,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 1768 events. 913/1768 cut-off events. For 110156/110169 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10978 event pairs, 218 based on Foata normal form. 8/1639 useless extension candidates. Maximal degree in co-relation 11890. Up to 1274 conditions per place. [2024-06-27 22:22:27,706 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 175 selfloop transitions, 143 changer transitions 0/332 dead transitions. [2024-06-27 22:22:27,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 332 transitions, 4869 flow [2024-06-27 22:22:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:22:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:22:27,707 INFO L175 Difference]: Start difference. First operand has 287 places, 322 transitions, 4031 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:22:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 332 transitions, 4869 flow [2024-06-27 22:22:28,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 332 transitions, 4778 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:28,153 INFO L231 Difference]: Finished difference. Result has 288 places, 322 transitions, 4231 flow [2024-06-27 22:22:28,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3940, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4231, PETRI_PLACES=288, PETRI_TRANSITIONS=322} [2024-06-27 22:22:28,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:22:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 322 transitions, 4231 flow [2024-06-27 22:22:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:28,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:28,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:22:28,155 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:28,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash 752336230, now seen corresponding path program 12 times [2024-06-27 22:22:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:28,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449303084] [2024-06-27 22:22:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:29,424 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 22:22:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449303084] [2024-06-27 22:22:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449303084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387751117] [2024-06-27 22:22:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:29,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:29,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:29,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 322 transitions, 4231 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:29,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:29,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:29,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:29,969 INFO L124 PetriNetUnfolderBase]: 911/1765 cut-off events. [2024-06-27 22:22:29,969 INFO L125 PetriNetUnfolderBase]: For 108775/108788 co-relation queries the response was YES. [2024-06-27 22:22:29,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12182 conditions, 1765 events. 911/1765 cut-off events. For 108775/108788 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10964 event pairs, 218 based on Foata normal form. 3/1631 useless extension candidates. Maximal degree in co-relation 12058. Up to 1272 conditions per place. [2024-06-27 22:22:29,988 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 206 selfloop transitions, 114 changer transitions 0/334 dead transitions. [2024-06-27 22:22:29,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 334 transitions, 5443 flow [2024-06-27 22:22:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:22:29,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:22:29,989 INFO L175 Difference]: Start difference. First operand has 288 places, 322 transitions, 4231 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:22:29,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 334 transitions, 5443 flow [2024-06-27 22:22:30,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 334 transitions, 5144 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:30,406 INFO L231 Difference]: Finished difference. Result has 288 places, 322 transitions, 4165 flow [2024-06-27 22:22:30,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3932, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4165, PETRI_PLACES=288, PETRI_TRANSITIONS=322} [2024-06-27 22:22:30,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:22:30,406 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 322 transitions, 4165 flow [2024-06-27 22:22:30,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:30,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:30,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:30,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:22:30,407 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:30,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:30,407 INFO L85 PathProgramCache]: Analyzing trace with hash 973972900, now seen corresponding path program 13 times [2024-06-27 22:22:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:30,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104843911] [2024-06-27 22:22:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104843911] [2024-06-27 22:22:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104843911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790861072] [2024-06-27 22:22:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:31,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:31,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:31,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:31,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 322 transitions, 4165 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:31,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:31,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:31,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:32,437 INFO L124 PetriNetUnfolderBase]: 909/1762 cut-off events. [2024-06-27 22:22:32,437 INFO L125 PetriNetUnfolderBase]: For 106715/106728 co-relation queries the response was YES. [2024-06-27 22:22:32,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12039 conditions, 1762 events. 909/1762 cut-off events. For 106715/106728 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10906 event pairs, 218 based on Foata normal form. 8/1633 useless extension candidates. Maximal degree in co-relation 11914. Up to 1270 conditions per place. [2024-06-27 22:22:32,455 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 194 selfloop transitions, 124 changer transitions 0/332 dead transitions. [2024-06-27 22:22:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 332 transitions, 5007 flow [2024-06-27 22:22:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:22:32,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:22:32,456 INFO L175 Difference]: Start difference. First operand has 288 places, 322 transitions, 4165 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:22:32,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 332 transitions, 5007 flow [2024-06-27 22:22:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 332 transitions, 4772 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:32,906 INFO L231 Difference]: Finished difference. Result has 291 places, 322 transitions, 4183 flow [2024-06-27 22:22:32,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3930, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4183, PETRI_PLACES=291, PETRI_TRANSITIONS=322} [2024-06-27 22:22:32,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 22:22:32,907 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 322 transitions, 4183 flow [2024-06-27 22:22:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:32,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:32,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:22:32,907 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:32,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 752336540, now seen corresponding path program 6 times [2024-06-27 22:22:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:32,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166454441] [2024-06-27 22:22:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:34,347 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 22:22:34,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166454441] [2024-06-27 22:22:34,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166454441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:34,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:34,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:34,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300148122] [2024-06-27 22:22:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:34,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:34,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:34,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:34,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 322 transitions, 4183 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:34,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:34,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:34,934 INFO L124 PetriNetUnfolderBase]: 907/1767 cut-off events. [2024-06-27 22:22:34,934 INFO L125 PetriNetUnfolderBase]: For 105199/105215 co-relation queries the response was YES. [2024-06-27 22:22:34,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11963 conditions, 1767 events. 907/1767 cut-off events. For 105199/105215 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11053 event pairs, 203 based on Foata normal form. 2/1630 useless extension candidates. Maximal degree in co-relation 11837. Up to 1457 conditions per place. [2024-06-27 22:22:34,953 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 45 changer transitions 0/333 dead transitions. [2024-06-27 22:22:34,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 333 transitions, 4889 flow [2024-06-27 22:22:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:22:34,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:22:34,954 INFO L175 Difference]: Start difference. First operand has 291 places, 322 transitions, 4183 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:22:34,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 333 transitions, 4889 flow [2024-06-27 22:22:35,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 333 transitions, 4615 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:35,341 INFO L231 Difference]: Finished difference. Result has 291 places, 324 transitions, 4056 flow [2024-06-27 22:22:35,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4056, PETRI_PLACES=291, PETRI_TRANSITIONS=324} [2024-06-27 22:22:35,342 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 22:22:35,342 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 324 transitions, 4056 flow [2024-06-27 22:22:35,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:35,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:35,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:35,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:22:35,343 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:35,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 745841110, now seen corresponding path program 14 times [2024-06-27 22:22:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:35,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996628749] [2024-06-27 22:22:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:35,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:36,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996628749] [2024-06-27 22:22:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996628749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:36,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:36,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:36,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453404836] [2024-06-27 22:22:36,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:36,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:36,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:36,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 324 transitions, 4056 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:36,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:36,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:36,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:37,664 INFO L124 PetriNetUnfolderBase]: 911/1765 cut-off events. [2024-06-27 22:22:37,664 INFO L125 PetriNetUnfolderBase]: For 105254/105267 co-relation queries the response was YES. [2024-06-27 22:22:37,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 1765 events. 911/1765 cut-off events. For 105254/105267 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10939 event pairs, 218 based on Foata normal form. 3/1630 useless extension candidates. Maximal degree in co-relation 11660. Up to 1272 conditions per place. [2024-06-27 22:22:37,681 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 203 selfloop transitions, 120 changer transitions 0/337 dead transitions. [2024-06-27 22:22:37,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 337 transitions, 5128 flow [2024-06-27 22:22:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:22:37,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:22:37,682 INFO L175 Difference]: Start difference. First operand has 291 places, 324 transitions, 4056 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:22:37,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 337 transitions, 5128 flow [2024-06-27 22:22:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 337 transitions, 5001 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:38,268 INFO L231 Difference]: Finished difference. Result has 293 places, 326 transitions, 4200 flow [2024-06-27 22:22:38,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4200, PETRI_PLACES=293, PETRI_TRANSITIONS=326} [2024-06-27 22:22:38,268 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 22:22:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 326 transitions, 4200 flow [2024-06-27 22:22:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:38,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:38,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:38,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:22:38,269 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:38,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 752097220, now seen corresponding path program 15 times [2024-06-27 22:22:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350444058] [2024-06-27 22:22:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350444058] [2024-06-27 22:22:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350444058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:39,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:39,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891708864] [2024-06-27 22:22:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:39,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:39,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:39,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:39,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:22:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 326 transitions, 4200 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:22:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:40,473 INFO L124 PetriNetUnfolderBase]: 909/1762 cut-off events. [2024-06-27 22:22:40,473 INFO L125 PetriNetUnfolderBase]: For 103380/103393 co-relation queries the response was YES. [2024-06-27 22:22:40,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11879 conditions, 1762 events. 909/1762 cut-off events. For 103380/103393 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10923 event pairs, 218 based on Foata normal form. 3/1627 useless extension candidates. Maximal degree in co-relation 11751. Up to 1270 conditions per place. [2024-06-27 22:22:40,494 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 208 selfloop transitions, 114 changer transitions 0/336 dead transitions. [2024-06-27 22:22:40,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 336 transitions, 5056 flow [2024-06-27 22:22:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:22:40,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:22:40,495 INFO L175 Difference]: Start difference. First operand has 293 places, 326 transitions, 4200 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:22:40,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 336 transitions, 5056 flow [2024-06-27 22:22:41,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 336 transitions, 4832 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:41,031 INFO L231 Difference]: Finished difference. Result has 296 places, 326 transitions, 4209 flow [2024-06-27 22:22:41,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4209, PETRI_PLACES=296, PETRI_TRANSITIONS=326} [2024-06-27 22:22:41,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 22:22:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 326 transitions, 4209 flow [2024-06-27 22:22:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 22:22:41,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:41,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:22:41,033 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -209429692, now seen corresponding path program 11 times [2024-06-27 22:22:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063755627] [2024-06-27 22:22:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063755627] [2024-06-27 22:22:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063755627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:42,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044227663] [2024-06-27 22:22:42,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:42,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:42,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:42,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:42,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 326 transitions, 4209 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 22:22:42,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:42,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:42,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:42,838 INFO L124 PetriNetUnfolderBase]: 1125/2098 cut-off events. [2024-06-27 22:22:42,838 INFO L125 PetriNetUnfolderBase]: For 111871/111871 co-relation queries the response was YES. [2024-06-27 22:22:42,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13883 conditions, 2098 events. 1125/2098 cut-off events. For 111871/111871 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12925 event pairs, 210 based on Foata normal form. 2/1981 useless extension candidates. Maximal degree in co-relation 13754. Up to 1742 conditions per place. [2024-06-27 22:22:42,863 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 44 changer transitions 0/357 dead transitions. [2024-06-27 22:22:42,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 357 transitions, 5103 flow [2024-06-27 22:22:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:22:42,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:22:42,865 INFO L175 Difference]: Start difference. First operand has 296 places, 326 transitions, 4209 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:22:42,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 357 transitions, 5103 flow [2024-06-27 22:22:43,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 357 transitions, 4817 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:22:43,568 INFO L231 Difference]: Finished difference. Result has 295 places, 330 transitions, 4126 flow [2024-06-27 22:22:43,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4126, PETRI_PLACES=295, PETRI_TRANSITIONS=330} [2024-06-27 22:22:43,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 22:22:43,568 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 330 transitions, 4126 flow [2024-06-27 22:22:43,568 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 22:22:43,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:43,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:22:43,569 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:43,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash -438126558, now seen corresponding path program 12 times [2024-06-27 22:22:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388820847] [2024-06-27 22:22:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388820847] [2024-06-27 22:22:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388820847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:44,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:44,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:44,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031294027] [2024-06-27 22:22:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:44,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:44,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:44,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 330 transitions, 4126 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 22:22:44,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:44,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:45,511 INFO L124 PetriNetUnfolderBase]: 1168/2178 cut-off events. [2024-06-27 22:22:45,511 INFO L125 PetriNetUnfolderBase]: For 125383/125383 co-relation queries the response was YES. [2024-06-27 22:22:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14521 conditions, 2178 events. 1168/2178 cut-off events. For 125383/125383 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13537 event pairs, 244 based on Foata normal form. 2/2065 useless extension candidates. Maximal degree in co-relation 14391. Up to 1825 conditions per place. [2024-06-27 22:22:45,536 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 303 selfloop transitions, 51 changer transitions 0/363 dead transitions. [2024-06-27 22:22:45,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 363 transitions, 5326 flow [2024-06-27 22:22:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:45,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:22:45,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:22:45,538 INFO L175 Difference]: Start difference. First operand has 295 places, 330 transitions, 4126 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:22:45,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 363 transitions, 5326 flow [2024-06-27 22:22:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 363 transitions, 5163 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:46,495 INFO L231 Difference]: Finished difference. Result has 298 places, 338 transitions, 4310 flow [2024-06-27 22:22:46,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4310, PETRI_PLACES=298, PETRI_TRANSITIONS=338} [2024-06-27 22:22:46,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 22:22:46,496 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 338 transitions, 4310 flow [2024-06-27 22:22:46,496 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 22:22:46,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:46,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:46,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:22:46,497 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:46,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash 314092624, now seen corresponding path program 13 times [2024-06-27 22:22:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910748648] [2024-06-27 22:22:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:47,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910748648] [2024-06-27 22:22:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910748648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:47,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:47,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23988466] [2024-06-27 22:22:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:47,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:47,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:47,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 338 transitions, 4310 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 22:22:47,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:47,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:47,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:48,403 INFO L124 PetriNetUnfolderBase]: 1165/2174 cut-off events. [2024-06-27 22:22:48,403 INFO L125 PetriNetUnfolderBase]: For 117982/117982 co-relation queries the response was YES. [2024-06-27 22:22:48,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14304 conditions, 2174 events. 1165/2174 cut-off events. For 117982/117982 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 13542 event pairs, 261 based on Foata normal form. 2/2059 useless extension candidates. Maximal degree in co-relation 14172. Up to 1890 conditions per place. [2024-06-27 22:22:48,430 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 307 selfloop transitions, 44 changer transitions 0/360 dead transitions. [2024-06-27 22:22:48,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 360 transitions, 5092 flow [2024-06-27 22:22:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:22:48,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:22:48,433 INFO L175 Difference]: Start difference. First operand has 298 places, 338 transitions, 4310 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:22:48,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 360 transitions, 5092 flow [2024-06-27 22:22:49,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 360 transitions, 4878 flow, removed 82 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:49,103 INFO L231 Difference]: Finished difference. Result has 302 places, 338 transitions, 4193 flow [2024-06-27 22:22:49,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4096, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4193, PETRI_PLACES=302, PETRI_TRANSITIONS=338} [2024-06-27 22:22:49,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:22:49,104 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 338 transitions, 4193 flow [2024-06-27 22:22:49,104 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 22:22:49,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:49,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:49,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:22:49,105 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:49,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1752606336, now seen corresponding path program 14 times [2024-06-27 22:22:49,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300142244] [2024-06-27 22:22:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300142244] [2024-06-27 22:22:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300142244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:22:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709431441] [2024-06-27 22:22:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:22:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:22:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:22:50,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:22:50,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 338 transitions, 4193 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:50,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:50,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:22:50,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:50,742 INFO L124 PetriNetUnfolderBase]: 1120/2130 cut-off events. [2024-06-27 22:22:50,743 INFO L125 PetriNetUnfolderBase]: For 119421/119425 co-relation queries the response was YES. [2024-06-27 22:22:50,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 2130 events. 1120/2130 cut-off events. For 119421/119425 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 13559 event pairs, 88 based on Foata normal form. 5/2033 useless extension candidates. Maximal degree in co-relation 13516. Up to 1289 conditions per place. [2024-06-27 22:22:50,768 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 196 selfloop transitions, 81 changer transitions 0/366 dead transitions. [2024-06-27 22:22:50,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 366 transitions, 4947 flow [2024-06-27 22:22:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:22:50,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 22:22:50,769 INFO L175 Difference]: Start difference. First operand has 302 places, 338 transitions, 4193 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:22:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 366 transitions, 4947 flow [2024-06-27 22:22:51,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 366 transitions, 4842 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:51,371 INFO L231 Difference]: Finished difference. Result has 302 places, 342 transitions, 4401 flow [2024-06-27 22:22:51,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4401, PETRI_PLACES=302, PETRI_TRANSITIONS=342} [2024-06-27 22:22:51,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:22:51,372 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 342 transitions, 4401 flow [2024-06-27 22:22:51,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:51,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:51,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:51,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:22:51,372 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:51,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -404700994, now seen corresponding path program 16 times [2024-06-27 22:22:51,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:51,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624241313] [2024-06-27 22:22:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:51,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624241313] [2024-06-27 22:22:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624241313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:52,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:52,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322617834] [2024-06-27 22:22:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:52,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:52,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:52,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 342 transitions, 4401 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 22:22:52,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:52,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:52,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:53,461 INFO L124 PetriNetUnfolderBase]: 1181/2201 cut-off events. [2024-06-27 22:22:53,461 INFO L125 PetriNetUnfolderBase]: For 112300/112300 co-relation queries the response was YES. [2024-06-27 22:22:53,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14531 conditions, 2201 events. 1181/2201 cut-off events. For 112300/112300 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 13709 event pairs, 271 based on Foata normal form. 1/2083 useless extension candidates. Maximal degree in co-relation 14396. Up to 1885 conditions per place. [2024-06-27 22:22:53,487 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 288 selfloop transitions, 65 changer transitions 0/362 dead transitions. [2024-06-27 22:22:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 362 transitions, 5181 flow [2024-06-27 22:22:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:22:53,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:22:53,488 INFO L175 Difference]: Start difference. First operand has 302 places, 342 transitions, 4401 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:22:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 362 transitions, 5181 flow [2024-06-27 22:22:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 362 transitions, 4961 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:53,964 INFO L231 Difference]: Finished difference. Result has 304 places, 342 transitions, 4323 flow [2024-06-27 22:22:53,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4323, PETRI_PLACES=304, PETRI_TRANSITIONS=342} [2024-06-27 22:22:53,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:22:53,965 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 342 transitions, 4323 flow [2024-06-27 22:22:53,965 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 22:22:53,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:53,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:53,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:22:53,965 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1821286398, now seen corresponding path program 15 times [2024-06-27 22:22:53,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304586524] [2024-06-27 22:22:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:55,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:55,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304586524] [2024-06-27 22:22:55,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304586524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:55,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:55,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:55,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646552157] [2024-06-27 22:22:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:55,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:55,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:55,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:55,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 342 transitions, 4323 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 22:22:55,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:55,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:56,012 INFO L124 PetriNetUnfolderBase]: 1214/2258 cut-off events. [2024-06-27 22:22:56,012 INFO L125 PetriNetUnfolderBase]: For 114972/114972 co-relation queries the response was YES. [2024-06-27 22:22:56,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14712 conditions, 2258 events. 1214/2258 cut-off events. For 114972/114972 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 14158 event pairs, 226 based on Foata normal form. 2/2137 useless extension candidates. Maximal degree in co-relation 14577. Up to 1875 conditions per place. [2024-06-27 22:22:56,041 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 51 changer transitions 0/375 dead transitions. [2024-06-27 22:22:56,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 375 transitions, 5316 flow [2024-06-27 22:22:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:22:56,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:22:56,042 INFO L175 Difference]: Start difference. First operand has 304 places, 342 transitions, 4323 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:22:56,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 375 transitions, 5316 flow [2024-06-27 22:22:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 375 transitions, 5034 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 22:22:56,502 INFO L231 Difference]: Finished difference. Result has 302 places, 350 transitions, 4339 flow [2024-06-27 22:22:56,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4339, PETRI_PLACES=302, PETRI_TRANSITIONS=350} [2024-06-27 22:22:56,503 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:22:56,503 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 350 transitions, 4339 flow [2024-06-27 22:22:56,503 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 22:22:56,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:56,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:22:56,503 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:56,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1910952348, now seen corresponding path program 16 times [2024-06-27 22:22:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968281917] [2024-06-27 22:22:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:57,853 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 22:22:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968281917] [2024-06-27 22:22:57,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968281917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:57,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:57,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:57,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259044949] [2024-06-27 22:22:57,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:57,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:57,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:57,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:22:57,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 350 transitions, 4339 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 22:22:57,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:57,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:22:57,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:58,646 INFO L124 PetriNetUnfolderBase]: 1241/2309 cut-off events. [2024-06-27 22:22:58,646 INFO L125 PetriNetUnfolderBase]: For 117470/117470 co-relation queries the response was YES. [2024-06-27 22:22:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15091 conditions, 2309 events. 1241/2309 cut-off events. For 117470/117470 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14569 event pairs, 277 based on Foata normal form. 2/2189 useless extension candidates. Maximal degree in co-relation 14955. Up to 2020 conditions per place. [2024-06-27 22:22:58,673 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 45 changer transitions 0/376 dead transitions. [2024-06-27 22:22:58,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 376 transitions, 5279 flow [2024-06-27 22:22:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:22:58,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:22:58,674 INFO L175 Difference]: Start difference. First operand has 302 places, 350 transitions, 4339 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:22:58,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 376 transitions, 5279 flow [2024-06-27 22:22:59,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 376 transitions, 5079 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:59,233 INFO L231 Difference]: Finished difference. Result has 304 places, 356 transitions, 4386 flow [2024-06-27 22:22:59,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4386, PETRI_PLACES=304, PETRI_TRANSITIONS=356} [2024-06-27 22:22:59,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:22:59,233 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 356 transitions, 4386 flow [2024-06-27 22:22:59,233 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 22:22:59,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:59,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:59,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:22:59,234 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:59,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1910774718, now seen corresponding path program 17 times [2024-06-27 22:22:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312247099] [2024-06-27 22:22:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:00,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:00,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312247099] [2024-06-27 22:23:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312247099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:00,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:23:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122431952] [2024-06-27 22:23:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:23:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:23:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:23:00,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:00,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 356 transitions, 4386 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 22:23:00,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:00,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:00,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:01,347 INFO L124 PetriNetUnfolderBase]: 1268/2359 cut-off events. [2024-06-27 22:23:01,347 INFO L125 PetriNetUnfolderBase]: For 120846/120846 co-relation queries the response was YES. [2024-06-27 22:23:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15359 conditions, 2359 events. 1268/2359 cut-off events. For 120846/120846 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 15011 event pairs, 271 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 15222. Up to 1997 conditions per place. [2024-06-27 22:23:01,375 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 54 changer transitions 0/384 dead transitions. [2024-06-27 22:23:01,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 384 transitions, 5354 flow [2024-06-27 22:23:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:23:01,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:23:01,376 INFO L175 Difference]: Start difference. First operand has 304 places, 356 transitions, 4386 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:23:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 384 transitions, 5354 flow [2024-06-27 22:23:01,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 384 transitions, 5187 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:01,933 INFO L231 Difference]: Finished difference. Result has 306 places, 362 transitions, 4488 flow [2024-06-27 22:23:01,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4488, PETRI_PLACES=306, PETRI_TRANSITIONS=362} [2024-06-27 22:23:01,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-27 22:23:01,933 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 362 transitions, 4488 flow [2024-06-27 22:23:01,933 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 22:23:01,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:01,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:23:01,934 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:01,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1217716952, now seen corresponding path program 18 times [2024-06-27 22:23:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:01,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683442614] [2024-06-27 22:23:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:01,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:03,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683442614] [2024-06-27 22:23:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683442614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:03,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:23:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305446690] [2024-06-27 22:23:03,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:03,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:23:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:23:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:23:03,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:03,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 362 transitions, 4488 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 22:23:03,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:03,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:03,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:04,404 INFO L124 PetriNetUnfolderBase]: 1288/2395 cut-off events. [2024-06-27 22:23:04,404 INFO L125 PetriNetUnfolderBase]: For 124377/124377 co-relation queries the response was YES. [2024-06-27 22:23:04,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15683 conditions, 2395 events. 1288/2395 cut-off events. For 124377/124377 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 15268 event pairs, 298 based on Foata normal form. 2/2272 useless extension candidates. Maximal degree in co-relation 15545. Up to 2070 conditions per place. [2024-06-27 22:23:04,432 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 62 changer transitions 0/386 dead transitions. [2024-06-27 22:23:04,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 386 transitions, 5436 flow [2024-06-27 22:23:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:23:04,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:23:04,433 INFO L175 Difference]: Start difference. First operand has 306 places, 362 transitions, 4488 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:23:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 386 transitions, 5436 flow [2024-06-27 22:23:05,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 386 transitions, 5247 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:05,036 INFO L231 Difference]: Finished difference. Result has 308 places, 366 transitions, 4559 flow [2024-06-27 22:23:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4299, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4559, PETRI_PLACES=308, PETRI_TRANSITIONS=366} [2024-06-27 22:23:05,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 22:23:05,037 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 366 transitions, 4559 flow [2024-06-27 22:23:05,037 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 22:23:05,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:05,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:23:05,037 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:05,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1217539322, now seen corresponding path program 19 times [2024-06-27 22:23:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514406563] [2024-06-27 22:23:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:06,461 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 22:23:06,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514406563] [2024-06-27 22:23:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514406563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:06,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:06,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:23:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866768858] [2024-06-27 22:23:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:06,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:23:06,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:23:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:23:06,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:06,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 366 transitions, 4559 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 22:23:06,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:06,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:06,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:07,362 INFO L124 PetriNetUnfolderBase]: 1315/2446 cut-off events. [2024-06-27 22:23:07,363 INFO L125 PetriNetUnfolderBase]: For 128145/128145 co-relation queries the response was YES. [2024-06-27 22:23:07,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 2446 events. 1315/2446 cut-off events. For 128145/128145 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 15700 event pairs, 293 based on Foata normal form. 2/2325 useless extension candidates. Maximal degree in co-relation 15849. Up to 2040 conditions per place. [2024-06-27 22:23:07,391 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 316 selfloop transitions, 72 changer transitions 0/397 dead transitions. [2024-06-27 22:23:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 397 transitions, 5871 flow [2024-06-27 22:23:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:23:07,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:23:07,392 INFO L175 Difference]: Start difference. First operand has 308 places, 366 transitions, 4559 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:23:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 397 transitions, 5871 flow [2024-06-27 22:23:07,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 397 transitions, 5655 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:07,956 INFO L231 Difference]: Finished difference. Result has 311 places, 374 transitions, 4773 flow [2024-06-27 22:23:07,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4773, PETRI_PLACES=311, PETRI_TRANSITIONS=374} [2024-06-27 22:23:07,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 22:23:07,957 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 374 transitions, 4773 flow [2024-06-27 22:23:07,957 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 22:23:07,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:07,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:07,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:23:07,958 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:07,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1223973062, now seen corresponding path program 20 times [2024-06-27 22:23:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537542555] [2024-06-27 22:23:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:09,617 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 22:23:09,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:09,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537542555] [2024-06-27 22:23:09,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537542555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:09,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275744661] [2024-06-27 22:23:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:09,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:09,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:09,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 374 transitions, 4773 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:23:09,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:09,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:09,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:10,555 INFO L124 PetriNetUnfolderBase]: 1312/2441 cut-off events. [2024-06-27 22:23:10,555 INFO L125 PetriNetUnfolderBase]: For 118030/118030 co-relation queries the response was YES. [2024-06-27 22:23:10,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15723 conditions, 2441 events. 1312/2441 cut-off events. For 118030/118030 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 15650 event pairs, 304 based on Foata normal form. 2/2316 useless extension candidates. Maximal degree in co-relation 15582. Up to 2114 conditions per place. [2024-06-27 22:23:10,586 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 318 selfloop transitions, 67 changer transitions 0/394 dead transitions. [2024-06-27 22:23:10,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 394 transitions, 5617 flow [2024-06-27 22:23:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:23:10,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:23:10,587 INFO L175 Difference]: Start difference. First operand has 311 places, 374 transitions, 4773 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:23:10,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 394 transitions, 5617 flow [2024-06-27 22:23:11,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 394 transitions, 5343 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:11,203 INFO L231 Difference]: Finished difference. Result has 315 places, 374 transitions, 4641 flow [2024-06-27 22:23:11,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4499, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4641, PETRI_PLACES=315, PETRI_TRANSITIONS=374} [2024-06-27 22:23:11,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-27 22:23:11,204 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 374 transitions, 4641 flow [2024-06-27 22:23:11,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 22:23:11,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:11,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:23:11,205 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2091856784, now seen corresponding path program 1 times [2024-06-27 22:23:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072967952] [2024-06-27 22:23:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072967952] [2024-06-27 22:23:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072967952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715017398] [2024-06-27 22:23:12,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:13,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:13,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 374 transitions, 4641 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 22:23:13,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:13,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:13,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:13,811 INFO L124 PetriNetUnfolderBase]: 1341/2481 cut-off events. [2024-06-27 22:23:13,811 INFO L125 PetriNetUnfolderBase]: For 127120/127120 co-relation queries the response was YES. [2024-06-27 22:23:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15991 conditions, 2481 events. 1341/2481 cut-off events. For 127120/127120 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 16011 event pairs, 282 based on Foata normal form. 2/2358 useless extension candidates. Maximal degree in co-relation 15848. Up to 2044 conditions per place. [2024-06-27 22:23:13,835 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2024-06-27 22:23:13,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 401 transitions, 5893 flow [2024-06-27 22:23:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:23:13,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:23:13,836 INFO L175 Difference]: Start difference. First operand has 315 places, 374 transitions, 4641 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:23:13,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 401 transitions, 5893 flow [2024-06-27 22:23:14,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 401 transitions, 5735 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:14,493 INFO L231 Difference]: Finished difference. Result has 316 places, 378 transitions, 4782 flow [2024-06-27 22:23:14,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4483, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4782, PETRI_PLACES=316, PETRI_TRANSITIONS=378} [2024-06-27 22:23:14,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 22:23:14,494 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 378 transitions, 4782 flow [2024-06-27 22:23:14,494 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 22:23:14,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:14,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:23:14,494 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:14,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2092000934, now seen corresponding path program 2 times [2024-06-27 22:23:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397716137] [2024-06-27 22:23:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397716137] [2024-06-27 22:23:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397716137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998018423] [2024-06-27 22:23:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:15,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:16,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:16,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 378 transitions, 4782 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 22:23:16,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:16,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:16,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:16,944 INFO L124 PetriNetUnfolderBase]: 1354/2517 cut-off events. [2024-06-27 22:23:16,944 INFO L125 PetriNetUnfolderBase]: For 130870/130870 co-relation queries the response was YES. [2024-06-27 22:23:16,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16220 conditions, 2517 events. 1354/2517 cut-off events. For 130870/130870 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16266 event pairs, 309 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 16076. Up to 2161 conditions per place. [2024-06-27 22:23:16,977 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 342 selfloop transitions, 50 changer transitions 0/401 dead transitions. [2024-06-27 22:23:16,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 401 transitions, 5944 flow [2024-06-27 22:23:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:16,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:23:16,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:23:16,979 INFO L175 Difference]: Start difference. First operand has 316 places, 378 transitions, 4782 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:23:16,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 401 transitions, 5944 flow [2024-06-27 22:23:17,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 401 transitions, 5756 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:17,718 INFO L231 Difference]: Finished difference. Result has 320 places, 380 transitions, 4793 flow [2024-06-27 22:23:17,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4793, PETRI_PLACES=320, PETRI_TRANSITIONS=380} [2024-06-27 22:23:17,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 22:23:17,718 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 380 transitions, 4793 flow [2024-06-27 22:23:17,718 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 22:23:17,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:17,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:17,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:23:17,719 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 674273078, now seen corresponding path program 3 times [2024-06-27 22:23:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028757472] [2024-06-27 22:23:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:17,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:19,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028757472] [2024-06-27 22:23:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028757472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:19,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:19,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461939828] [2024-06-27 22:23:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:19,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:19,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:19,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:19,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 380 transitions, 4793 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 22:23:19,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:19,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:19,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:19,938 INFO L124 PetriNetUnfolderBase]: 1351/2512 cut-off events. [2024-06-27 22:23:19,939 INFO L125 PetriNetUnfolderBase]: For 120010/120010 co-relation queries the response was YES. [2024-06-27 22:23:19,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15927 conditions, 2512 events. 1351/2512 cut-off events. For 120010/120010 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16242 event pairs, 315 based on Foata normal form. 2/2383 useless extension candidates. Maximal degree in co-relation 15781. Up to 2221 conditions per place. [2024-06-27 22:23:19,970 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 344 selfloop transitions, 45 changer transitions 0/398 dead transitions. [2024-06-27 22:23:19,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 398 transitions, 5637 flow [2024-06-27 22:23:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:23:19,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:23:19,971 INFO L175 Difference]: Start difference. First operand has 320 places, 380 transitions, 4793 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:23:19,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 398 transitions, 5637 flow [2024-06-27 22:23:20,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 398 transitions, 5422 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:20,740 INFO L231 Difference]: Finished difference. Result has 322 places, 380 transitions, 4675 flow [2024-06-27 22:23:20,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4675, PETRI_PLACES=322, PETRI_TRANSITIONS=380} [2024-06-27 22:23:20,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 22:23:20,741 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 380 transitions, 4675 flow [2024-06-27 22:23:20,742 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 22:23:20,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:20,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:23:20,742 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:20,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2105578762, now seen corresponding path program 4 times [2024-06-27 22:23:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:20,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154155626] [2024-06-27 22:23:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154155626] [2024-06-27 22:23:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154155626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:22,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:22,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388030673] [2024-06-27 22:23:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:22,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:22,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:22,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 380 transitions, 4675 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 22:23:22,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:22,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:22,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:23,111 INFO L124 PetriNetUnfolderBase]: 1364/2532 cut-off events. [2024-06-27 22:23:23,112 INFO L125 PetriNetUnfolderBase]: For 121822/121822 co-relation queries the response was YES. [2024-06-27 22:23:23,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15970 conditions, 2532 events. 1364/2532 cut-off events. For 121822/121822 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 16410 event pairs, 266 based on Foata normal form. 2/2401 useless extension candidates. Maximal degree in co-relation 15823. Up to 2108 conditions per place. [2024-06-27 22:23:23,146 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 51 changer transitions 0/407 dead transitions. [2024-06-27 22:23:23,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 407 transitions, 5660 flow [2024-06-27 22:23:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:23:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:23:23,147 INFO L175 Difference]: Start difference. First operand has 322 places, 380 transitions, 4675 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:23:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 407 transitions, 5660 flow [2024-06-27 22:23:23,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 407 transitions, 5553 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:23,811 INFO L231 Difference]: Finished difference. Result has 324 places, 382 transitions, 4774 flow [2024-06-27 22:23:23,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4568, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4774, PETRI_PLACES=324, PETRI_TRANSITIONS=382} [2024-06-27 22:23:23,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 22:23:23,811 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 382 transitions, 4774 flow [2024-06-27 22:23:23,811 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 22:23:23,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:23,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:23,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:23:23,812 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:23,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 658812282, now seen corresponding path program 5 times [2024-06-27 22:23:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278928390] [2024-06-27 22:23:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:25,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278928390] [2024-06-27 22:23:25,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278928390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:25,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:25,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552995740] [2024-06-27 22:23:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:25,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:25,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:25,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 382 transitions, 4774 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 22:23:25,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:25,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:26,673 INFO L124 PetriNetUnfolderBase]: 1377/2559 cut-off events. [2024-06-27 22:23:26,673 INFO L125 PetriNetUnfolderBase]: For 126161/126161 co-relation queries the response was YES. [2024-06-27 22:23:26,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16275 conditions, 2559 events. 1377/2559 cut-off events. For 126161/126161 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 16652 event pairs, 323 based on Foata normal form. 2/2429 useless extension candidates. Maximal degree in co-relation 16127. Up to 2215 conditions per place. [2024-06-27 22:23:26,717 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 67 changer transitions 0/402 dead transitions. [2024-06-27 22:23:26,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 402 transitions, 5724 flow [2024-06-27 22:23:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:23:26,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:23:26,719 INFO L175 Difference]: Start difference. First operand has 324 places, 382 transitions, 4774 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:23:26,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 402 transitions, 5724 flow [2024-06-27 22:23:27,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 402 transitions, 5540 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:27,358 INFO L231 Difference]: Finished difference. Result has 326 places, 384 transitions, 4830 flow [2024-06-27 22:23:27,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4830, PETRI_PLACES=326, PETRI_TRANSITIONS=384} [2024-06-27 22:23:27,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 22:23:27,359 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 384 transitions, 4830 flow [2024-06-27 22:23:27,359 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 22:23:27,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:27,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:23:27,359 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:27,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:27,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2081902518, now seen corresponding path program 6 times [2024-06-27 22:23:27,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940098863] [2024-06-27 22:23:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:27,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:29,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940098863] [2024-06-27 22:23:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940098863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:29,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377419900] [2024-06-27 22:23:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:29,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 384 transitions, 4830 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 22:23:29,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:29,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:29,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:30,294 INFO L124 PetriNetUnfolderBase]: 1390/2582 cut-off events. [2024-06-27 22:23:30,294 INFO L125 PetriNetUnfolderBase]: For 129100/129100 co-relation queries the response was YES. [2024-06-27 22:23:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 2582 events. 1390/2582 cut-off events. For 129100/129100 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 16799 event pairs, 323 based on Foata normal form. 2/2454 useless extension candidates. Maximal degree in co-relation 16284. Up to 2189 conditions per place. [2024-06-27 22:23:30,323 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 71 changer transitions 0/406 dead transitions. [2024-06-27 22:23:30,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 5800 flow [2024-06-27 22:23:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:23:30,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:23:30,325 INFO L175 Difference]: Start difference. First operand has 326 places, 384 transitions, 4830 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:23:30,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 5800 flow [2024-06-27 22:23:30,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 406 transitions, 5578 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:30,931 INFO L231 Difference]: Finished difference. Result has 327 places, 386 transitions, 4860 flow [2024-06-27 22:23:30,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4608, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4860, PETRI_PLACES=327, PETRI_TRANSITIONS=386} [2024-06-27 22:23:30,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 22:23:30,932 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 386 transitions, 4860 flow [2024-06-27 22:23:30,932 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 22:23:30,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:30,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:30,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:23:30,932 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:30,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash 653098362, now seen corresponding path program 7 times [2024-06-27 22:23:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:30,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138431804] [2024-06-27 22:23:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:30,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:32,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138431804] [2024-06-27 22:23:32,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138431804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:32,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:32,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646554568] [2024-06-27 22:23:32,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:32,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:32,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 386 transitions, 4860 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 22:23:32,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:32,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:32,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:33,677 INFO L124 PetriNetUnfolderBase]: 1419/2635 cut-off events. [2024-06-27 22:23:33,677 INFO L125 PetriNetUnfolderBase]: For 146592/146592 co-relation queries the response was YES. [2024-06-27 22:23:33,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17073 conditions, 2635 events. 1419/2635 cut-off events. For 146592/146592 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 17245 event pairs, 314 based on Foata normal form. 2/2510 useless extension candidates. Maximal degree in co-relation 16923. Up to 2095 conditions per place. [2024-06-27 22:23:33,710 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 81 changer transitions 0/413 dead transitions. [2024-06-27 22:23:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 413 transitions, 6182 flow [2024-06-27 22:23:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:23:33,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:23:33,711 INFO L175 Difference]: Start difference. First operand has 327 places, 386 transitions, 4860 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:23:33,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 413 transitions, 6182 flow [2024-06-27 22:23:34,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 413 transitions, 5948 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:34,430 INFO L231 Difference]: Finished difference. Result has 330 places, 390 transitions, 5006 flow [2024-06-27 22:23:34,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5006, PETRI_PLACES=330, PETRI_TRANSITIONS=390} [2024-06-27 22:23:34,431 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-27 22:23:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 390 transitions, 5006 flow [2024-06-27 22:23:34,431 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 22:23:34,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:34,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:23:34,431 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:34,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 852751692, now seen corresponding path program 8 times [2024-06-27 22:23:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:34,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073271761] [2024-06-27 22:23:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073271761] [2024-06-27 22:23:36,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073271761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:36,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:36,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039203595] [2024-06-27 22:23:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:36,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:36,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:36,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 390 transitions, 5006 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 22:23:36,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:36,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:36,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:37,284 INFO L124 PetriNetUnfolderBase]: 1432/2658 cut-off events. [2024-06-27 22:23:37,285 INFO L125 PetriNetUnfolderBase]: For 150389/150389 co-relation queries the response was YES. [2024-06-27 22:23:37,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17279 conditions, 2658 events. 1432/2658 cut-off events. For 150389/150389 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 17407 event pairs, 340 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 17128. Up to 2312 conditions per place. [2024-06-27 22:23:37,315 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 331 selfloop transitions, 70 changer transitions 0/410 dead transitions. [2024-06-27 22:23:37,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 410 transitions, 5984 flow [2024-06-27 22:23:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:23:37,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:23:37,317 INFO L175 Difference]: Start difference. First operand has 330 places, 390 transitions, 5006 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:23:37,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 410 transitions, 5984 flow [2024-06-27 22:23:38,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 410 transitions, 5741 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:38,074 INFO L231 Difference]: Finished difference. Result has 334 places, 392 transitions, 5021 flow [2024-06-27 22:23:38,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5021, PETRI_PLACES=334, PETRI_TRANSITIONS=392} [2024-06-27 22:23:38,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 22:23:38,075 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 392 transitions, 5021 flow [2024-06-27 22:23:38,075 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 22:23:38,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:38,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:23:38,075 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:38,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2019125368, now seen corresponding path program 9 times [2024-06-27 22:23:38,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417762799] [2024-06-27 22:23:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417762799] [2024-06-27 22:23:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417762799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:39,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361300480] [2024-06-27 22:23:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:39,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 392 transitions, 5021 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 22:23:39,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:39,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:40,848 INFO L124 PetriNetUnfolderBase]: 1445/2682 cut-off events. [2024-06-27 22:23:40,848 INFO L125 PetriNetUnfolderBase]: For 149632/149632 co-relation queries the response was YES. [2024-06-27 22:23:40,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17362 conditions, 2682 events. 1445/2682 cut-off events. For 149632/149632 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17605 event pairs, 334 based on Foata normal form. 2/2552 useless extension candidates. Maximal degree in co-relation 17209. Up to 2266 conditions per place. [2024-06-27 22:23:40,884 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 330 selfloop transitions, 76 changer transitions 0/415 dead transitions. [2024-06-27 22:23:40,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 415 transitions, 6217 flow [2024-06-27 22:23:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:23:40,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:23:40,885 INFO L175 Difference]: Start difference. First operand has 334 places, 392 transitions, 5021 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:23:40,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 415 transitions, 6217 flow [2024-06-27 22:23:41,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 415 transitions, 6011 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:41,701 INFO L231 Difference]: Finished difference. Result has 336 places, 394 transitions, 5055 flow [2024-06-27 22:23:41,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5055, PETRI_PLACES=336, PETRI_TRANSITIONS=394} [2024-06-27 22:23:41,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 22:23:41,702 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 394 transitions, 5055 flow [2024-06-27 22:23:41,702 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 22:23:41,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:41,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:23:41,702 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:41,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1512613878, now seen corresponding path program 10 times [2024-06-27 22:23:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597574631] [2024-06-27 22:23:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597574631] [2024-06-27 22:23:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597574631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584152786] [2024-06-27 22:23:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:43,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:43,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 394 transitions, 5055 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 22:23:43,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:43,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:43,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:44,012 INFO L124 PetriNetUnfolderBase]: 1442/2677 cut-off events. [2024-06-27 22:23:44,012 INFO L125 PetriNetUnfolderBase]: For 138125/138125 co-relation queries the response was YES. [2024-06-27 22:23:44,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17078 conditions, 2677 events. 1442/2677 cut-off events. For 138125/138125 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17610 event pairs, 340 based on Foata normal form. 2/2544 useless extension candidates. Maximal degree in co-relation 16924. Up to 2330 conditions per place. [2024-06-27 22:23:44,046 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 75 changer transitions 0/412 dead transitions. [2024-06-27 22:23:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 412 transitions, 5929 flow [2024-06-27 22:23:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:23:44,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:23:44,047 INFO L175 Difference]: Start difference. First operand has 336 places, 394 transitions, 5055 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:23:44,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 412 transitions, 5929 flow [2024-06-27 22:23:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 412 transitions, 5625 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:44,916 INFO L231 Difference]: Finished difference. Result has 338 places, 394 transitions, 4907 flow [2024-06-27 22:23:44,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4751, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4907, PETRI_PLACES=338, PETRI_TRANSITIONS=394} [2024-06-27 22:23:44,916 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:23:44,916 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 394 transitions, 4907 flow [2024-06-27 22:23:44,916 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 22:23:44,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:44,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:23:44,917 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:44,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash 453252680, now seen corresponding path program 1 times [2024-06-27 22:23:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984309335] [2024-06-27 22:23:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:46,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:46,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984309335] [2024-06-27 22:23:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984309335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:46,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:46,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470633887] [2024-06-27 22:23:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:46,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:47,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:23:47,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 394 transitions, 4907 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:47,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:47,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:23:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:47,804 INFO L124 PetriNetUnfolderBase]: 1449/2690 cut-off events. [2024-06-27 22:23:47,805 INFO L125 PetriNetUnfolderBase]: For 131198/131198 co-relation queries the response was YES. [2024-06-27 22:23:47,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16949 conditions, 2690 events. 1449/2690 cut-off events. For 131198/131198 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 17666 event pairs, 353 based on Foata normal form. 1/2558 useless extension candidates. Maximal degree in co-relation 16794. Up to 2354 conditions per place. [2024-06-27 22:23:47,841 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 342 selfloop transitions, 67 changer transitions 0/418 dead transitions. [2024-06-27 22:23:47,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 418 transitions, 5849 flow [2024-06-27 22:23:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:23:47,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:23:47,842 INFO L175 Difference]: Start difference. First operand has 338 places, 394 transitions, 4907 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:23:47,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 418 transitions, 5849 flow [2024-06-27 22:23:48,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 418 transitions, 5681 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:23:48,791 INFO L231 Difference]: Finished difference. Result has 338 places, 396 transitions, 4925 flow [2024-06-27 22:23:48,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4925, PETRI_PLACES=338, PETRI_TRANSITIONS=396} [2024-06-27 22:23:48,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:23:48,792 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 396 transitions, 4925 flow [2024-06-27 22:23:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:48,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:48,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:23:48,792 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:48,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:48,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2082117844, now seen corresponding path program 2 times [2024-06-27 22:23:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866367767] [2024-06-27 22:23:48,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:51,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866367767] [2024-06-27 22:23:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866367767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:51,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:51,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489561846] [2024-06-27 22:23:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:51,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:51,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:23:51,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 396 transitions, 4925 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:51,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:23:51,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:52,058 INFO L124 PetriNetUnfolderBase]: 1213/2318 cut-off events. [2024-06-27 22:23:52,058 INFO L125 PetriNetUnfolderBase]: For 132042/132055 co-relation queries the response was YES. [2024-06-27 22:23:52,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15021 conditions, 2318 events. 1213/2318 cut-off events. For 132042/132055 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15363 event pairs, 324 based on Foata normal form. 4/2154 useless extension candidates. Maximal degree in co-relation 14865. Up to 1911 conditions per place. [2024-06-27 22:23:52,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 306 selfloop transitions, 90 changer transitions 0/410 dead transitions. [2024-06-27 22:23:52,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 410 transitions, 5791 flow [2024-06-27 22:23:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:23:52,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:23:52,084 INFO L175 Difference]: Start difference. First operand has 338 places, 396 transitions, 4925 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:23:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 410 transitions, 5791 flow [2024-06-27 22:23:52,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 410 transitions, 5631 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:52,712 INFO L231 Difference]: Finished difference. Result has 340 places, 398 transitions, 5000 flow [2024-06-27 22:23:52,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5000, PETRI_PLACES=340, PETRI_TRANSITIONS=398} [2024-06-27 22:23:52,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 22:23:52,713 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 398 transitions, 5000 flow [2024-06-27 22:23:52,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:52,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:52,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:52,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:23:52,713 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:52,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:52,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2018910042, now seen corresponding path program 3 times [2024-06-27 22:23:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637430110] [2024-06-27 22:23:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:55,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637430110] [2024-06-27 22:23:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637430110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:23:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541084186] [2024-06-27 22:23:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:23:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:23:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:23:55,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:23:55,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 398 transitions, 5000 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:55,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:55,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:23:55,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:56,127 INFO L124 PetriNetUnfolderBase]: 1221/2330 cut-off events. [2024-06-27 22:23:56,127 INFO L125 PetriNetUnfolderBase]: For 135385/135398 co-relation queries the response was YES. [2024-06-27 22:23:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15205 conditions, 2330 events. 1221/2330 cut-off events. For 135385/135398 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 15482 event pairs, 324 based on Foata normal form. 8/2166 useless extension candidates. Maximal degree in co-relation 15048. Up to 1922 conditions per place. [2024-06-27 22:23:56,159 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 301 selfloop transitions, 97 changer transitions 0/412 dead transitions. [2024-06-27 22:23:56,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 412 transitions, 5874 flow [2024-06-27 22:23:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:23:56,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:23:56,160 INFO L175 Difference]: Start difference. First operand has 340 places, 398 transitions, 5000 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:23:56,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 412 transitions, 5874 flow [2024-06-27 22:23:57,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 412 transitions, 5663 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:57,109 INFO L231 Difference]: Finished difference. Result has 343 places, 400 transitions, 5042 flow [2024-06-27 22:23:57,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5042, PETRI_PLACES=343, PETRI_TRANSITIONS=400} [2024-06-27 22:23:57,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-27 22:23:57,110 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 400 transitions, 5042 flow [2024-06-27 22:23:57,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:57,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:57,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:23:57,111 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:57,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:57,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2011760202, now seen corresponding path program 4 times [2024-06-27 22:23:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:57,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473682334] [2024-06-27 22:23:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473682334] [2024-06-27 22:23:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473682334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:58,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:58,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802078112] [2024-06-27 22:23:58,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:58,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:58,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:23:58,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 400 transitions, 5042 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:58,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:58,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:23:58,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:59,658 INFO L124 PetriNetUnfolderBase]: 1229/2340 cut-off events. [2024-06-27 22:23:59,658 INFO L125 PetriNetUnfolderBase]: For 137351/137364 co-relation queries the response was YES. [2024-06-27 22:23:59,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 2340 events. 1229/2340 cut-off events. For 137351/137364 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 15506 event pairs, 324 based on Foata normal form. 8/2172 useless extension candidates. Maximal degree in co-relation 15159. Up to 1933 conditions per place. [2024-06-27 22:23:59,690 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 294 selfloop transitions, 106 changer transitions 0/414 dead transitions. [2024-06-27 22:23:59,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 414 transitions, 5924 flow [2024-06-27 22:23:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:23:59,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:23:59,691 INFO L175 Difference]: Start difference. First operand has 343 places, 400 transitions, 5042 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:23:59,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 414 transitions, 5924 flow [2024-06-27 22:24:00,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 414 transitions, 5695 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:00,658 INFO L231 Difference]: Finished difference. Result has 345 places, 402 transitions, 5088 flow [2024-06-27 22:24:00,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4813, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5088, PETRI_PLACES=345, PETRI_TRANSITIONS=402} [2024-06-27 22:24:00,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 22:24:00,659 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 402 transitions, 5088 flow [2024-06-27 22:24:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:00,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:00,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:24:00,659 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:00,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2011500732, now seen corresponding path program 5 times [2024-06-27 22:24:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884243445] [2024-06-27 22:24:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:02,226 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 22:24:02,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:02,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884243445] [2024-06-27 22:24:02,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884243445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:02,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:02,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:02,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18234324] [2024-06-27 22:24:02,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:02,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:02,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:02,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 402 transitions, 5088 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:02,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:02,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:02,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:03,085 INFO L124 PetriNetUnfolderBase]: 1237/2354 cut-off events. [2024-06-27 22:24:03,085 INFO L125 PetriNetUnfolderBase]: For 139538/139551 co-relation queries the response was YES. [2024-06-27 22:24:03,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15437 conditions, 2354 events. 1237/2354 cut-off events. For 139538/139551 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 15606 event pairs, 324 based on Foata normal form. 8/2182 useless extension candidates. Maximal degree in co-relation 15278. Up to 1944 conditions per place. [2024-06-27 22:24:03,115 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 284 selfloop transitions, 118 changer transitions 0/416 dead transitions. [2024-06-27 22:24:03,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 416 transitions, 5978 flow [2024-06-27 22:24:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:24:03,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:24:03,116 INFO L175 Difference]: Start difference. First operand has 345 places, 402 transitions, 5088 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:24:03,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 416 transitions, 5978 flow [2024-06-27 22:24:03,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 416 transitions, 5727 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:03,952 INFO L231 Difference]: Finished difference. Result has 347 places, 404 transitions, 5140 flow [2024-06-27 22:24:03,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5140, PETRI_PLACES=347, PETRI_TRANSITIONS=404} [2024-06-27 22:24:03,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 22:24:03,953 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 404 transitions, 5140 flow [2024-06-27 22:24:03,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:03,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:03,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:03,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:24:03,953 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2011491432, now seen corresponding path program 6 times [2024-06-27 22:24:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182195266] [2024-06-27 22:24:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182195266] [2024-06-27 22:24:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182195266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:05,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234700196] [2024-06-27 22:24:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:05,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:05,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 404 transitions, 5140 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:05,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:05,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:06,303 INFO L124 PetriNetUnfolderBase]: 1242/2361 cut-off events. [2024-06-27 22:24:06,303 INFO L125 PetriNetUnfolderBase]: For 141414/141427 co-relation queries the response was YES. [2024-06-27 22:24:06,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15493 conditions, 2361 events. 1242/2361 cut-off events. For 141414/141427 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 15653 event pairs, 324 based on Foata normal form. 8/2187 useless extension candidates. Maximal degree in co-relation 15333. Up to 1924 conditions per place. [2024-06-27 22:24:06,335 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 275 selfloop transitions, 129 changer transitions 0/418 dead transitions. [2024-06-27 22:24:06,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 418 transitions, 6038 flow [2024-06-27 22:24:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:24:06,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:24:06,337 INFO L175 Difference]: Start difference. First operand has 347 places, 404 transitions, 5140 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:24:06,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 418 transitions, 6038 flow [2024-06-27 22:24:07,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 418 transitions, 5759 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:07,276 INFO L231 Difference]: Finished difference. Result has 349 places, 406 transitions, 5190 flow [2024-06-27 22:24:07,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5190, PETRI_PLACES=349, PETRI_TRANSITIONS=406} [2024-06-27 22:24:07,277 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 22:24:07,277 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 406 transitions, 5190 flow [2024-06-27 22:24:07,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:07,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:07,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:07,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:24:07,277 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:07,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2058623831, now seen corresponding path program 1 times [2024-06-27 22:24:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812457261] [2024-06-27 22:24:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:08,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812457261] [2024-06-27 22:24:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812457261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:08,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:08,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:08,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160860240] [2024-06-27 22:24:08,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:08,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:08,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 406 transitions, 5190 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:09,555 INFO L124 PetriNetUnfolderBase]: 1256/2400 cut-off events. [2024-06-27 22:24:09,556 INFO L125 PetriNetUnfolderBase]: For 153167/153183 co-relation queries the response was YES. [2024-06-27 22:24:09,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 2400 events. 1256/2400 cut-off events. For 153167/153183 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 16015 event pairs, 343 based on Foata normal form. 4/2220 useless extension candidates. Maximal degree in co-relation 15650. Up to 2089 conditions per place. [2024-06-27 22:24:09,589 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 375 selfloop transitions, 34 changer transitions 0/423 dead transitions. [2024-06-27 22:24:09,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 423 transitions, 6166 flow [2024-06-27 22:24:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:24:09,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:24:09,590 INFO L175 Difference]: Start difference. First operand has 349 places, 406 transitions, 5190 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:24:09,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 423 transitions, 6166 flow [2024-06-27 22:24:10,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 423 transitions, 5861 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:10,798 INFO L231 Difference]: Finished difference. Result has 350 places, 407 transitions, 4991 flow [2024-06-27 22:24:10,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4991, PETRI_PLACES=350, PETRI_TRANSITIONS=407} [2024-06-27 22:24:10,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 22:24:10,799 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 407 transitions, 4991 flow [2024-06-27 22:24:10,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:10,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:10,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:24:10,800 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash -514442206, now seen corresponding path program 11 times [2024-06-27 22:24:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834174761] [2024-06-27 22:24:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:12,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:12,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834174761] [2024-06-27 22:24:12,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834174761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:12,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:12,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:12,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796585000] [2024-06-27 22:24:12,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:12,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:12,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:12,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:12,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 407 transitions, 4991 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 22:24:12,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:12,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:12,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:13,189 INFO L124 PetriNetUnfolderBase]: 1514/2804 cut-off events. [2024-06-27 22:24:13,189 INFO L125 PetriNetUnfolderBase]: For 158195/158195 co-relation queries the response was YES. [2024-06-27 22:24:13,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 2804 events. 1514/2804 cut-off events. For 158195/158195 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 18497 event pairs, 347 based on Foata normal form. 2/2656 useless extension candidates. Maximal degree in co-relation 17681. Up to 2273 conditions per place. [2024-06-27 22:24:13,227 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 136 changer transitions 0/427 dead transitions. [2024-06-27 22:24:13,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 427 transitions, 6005 flow [2024-06-27 22:24:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:24:13,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:24:13,229 INFO L175 Difference]: Start difference. First operand has 350 places, 407 transitions, 4991 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:24:13,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 427 transitions, 6005 flow [2024-06-27 22:24:14,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 427 transitions, 5923 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:14,256 INFO L231 Difference]: Finished difference. Result has 352 places, 409 transitions, 5298 flow [2024-06-27 22:24:14,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5298, PETRI_PLACES=352, PETRI_TRANSITIONS=409} [2024-06-27 22:24:14,257 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 22:24:14,257 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 409 transitions, 5298 flow [2024-06-27 22:24:14,257 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 22:24:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:24:14,257 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:14,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 261687656, now seen corresponding path program 12 times [2024-06-27 22:24:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526423083] [2024-06-27 22:24:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526423083] [2024-06-27 22:24:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526423083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:15,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926327431] [2024-06-27 22:24:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:15,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:16,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:16,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 409 transitions, 5298 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 22:24:16,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:16,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:16,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:16,928 INFO L124 PetriNetUnfolderBase]: 1527/2828 cut-off events. [2024-06-27 22:24:16,928 INFO L125 PetriNetUnfolderBase]: For 163181/163181 co-relation queries the response was YES. [2024-06-27 22:24:16,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18322 conditions, 2828 events. 1527/2828 cut-off events. For 163181/163181 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 18683 event pairs, 348 based on Foata normal form. 2/2679 useless extension candidates. Maximal degree in co-relation 18159. Up to 2296 conditions per place. [2024-06-27 22:24:16,966 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 118 changer transitions 0/429 dead transitions. [2024-06-27 22:24:16,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 429 transitions, 6320 flow [2024-06-27 22:24:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:24:16,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:24:16,968 INFO L175 Difference]: Start difference. First operand has 352 places, 409 transitions, 5298 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:24:16,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 429 transitions, 6320 flow [2024-06-27 22:24:18,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 429 transitions, 5947 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:18,146 INFO L231 Difference]: Finished difference. Result has 354 places, 411 transitions, 5282 flow [2024-06-27 22:24:18,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5282, PETRI_PLACES=354, PETRI_TRANSITIONS=411} [2024-06-27 22:24:18,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 22:24:18,147 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 411 transitions, 5282 flow [2024-06-27 22:24:18,147 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 22:24:18,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:18,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:24:18,148 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:18,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1847320182, now seen corresponding path program 13 times [2024-06-27 22:24:18,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291882554] [2024-06-27 22:24:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:19,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291882554] [2024-06-27 22:24:19,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291882554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:19,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:19,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:19,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084604897] [2024-06-27 22:24:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:19,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:19,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:19,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 411 transitions, 5282 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 22:24:19,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:19,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:19,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:20,417 INFO L124 PetriNetUnfolderBase]: 1540/2854 cut-off events. [2024-06-27 22:24:20,417 INFO L125 PetriNetUnfolderBase]: For 165795/165795 co-relation queries the response was YES. [2024-06-27 22:24:20,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18427 conditions, 2854 events. 1540/2854 cut-off events. For 165795/165795 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 18900 event pairs, 359 based on Foata normal form. 2/2704 useless extension candidates. Maximal degree in co-relation 18263. Up to 2319 conditions per place. [2024-06-27 22:24:20,455 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 107 changer transitions 0/431 dead transitions. [2024-06-27 22:24:20,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 431 transitions, 6312 flow [2024-06-27 22:24:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:24:20,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:24:20,456 INFO L175 Difference]: Start difference. First operand has 354 places, 411 transitions, 5282 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:24:20,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 431 transitions, 6312 flow [2024-06-27 22:24:21,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 431 transitions, 5971 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:21,828 INFO L231 Difference]: Finished difference. Result has 356 places, 413 transitions, 5280 flow [2024-06-27 22:24:21,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4941, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5280, PETRI_PLACES=356, PETRI_TRANSITIONS=413} [2024-06-27 22:24:21,828 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 22:24:21,829 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 413 transitions, 5280 flow [2024-06-27 22:24:21,829 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 22:24:21,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:21,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:24:21,829 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:21,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 254537816, now seen corresponding path program 14 times [2024-06-27 22:24:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885226498] [2024-06-27 22:24:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:23,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885226498] [2024-06-27 22:24:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885226498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933716756] [2024-06-27 22:24:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:23,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:23,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 413 transitions, 5280 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 22:24:23,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:23,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:23,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:24,427 INFO L124 PetriNetUnfolderBase]: 1553/2875 cut-off events. [2024-06-27 22:24:24,427 INFO L125 PetriNetUnfolderBase]: For 170281/170281 co-relation queries the response was YES. [2024-06-27 22:24:24,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18547 conditions, 2875 events. 1553/2875 cut-off events. For 170281/170281 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 19055 event pairs, 356 based on Foata normal form. 2/2725 useless extension candidates. Maximal degree in co-relation 18382. Up to 2342 conditions per place. [2024-06-27 22:24:24,487 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 305 selfloop transitions, 119 changer transitions 0/433 dead transitions. [2024-06-27 22:24:24,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 433 transitions, 6318 flow [2024-06-27 22:24:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:24:24,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:24:24,489 INFO L175 Difference]: Start difference. First operand has 356 places, 413 transitions, 5280 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:24:24,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 433 transitions, 6318 flow [2024-06-27 22:24:25,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 433 transitions, 5995 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:25,778 INFO L231 Difference]: Finished difference. Result has 359 places, 415 transitions, 5324 flow [2024-06-27 22:24:25,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5324, PETRI_PLACES=359, PETRI_TRANSITIONS=415} [2024-06-27 22:24:25,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 22:24:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 415 transitions, 5324 flow [2024-06-27 22:24:25,778 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 22:24:25,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:25,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:24:25,779 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:25,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 254330426, now seen corresponding path program 15 times [2024-06-27 22:24:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042203108] [2024-06-27 22:24:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:27,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042203108] [2024-06-27 22:24:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042203108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:27,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:27,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:27,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066285756] [2024-06-27 22:24:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:27,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:27,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:27,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 415 transitions, 5324 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 22:24:27,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:27,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:27,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:28,203 INFO L124 PetriNetUnfolderBase]: 1566/2901 cut-off events. [2024-06-27 22:24:28,203 INFO L125 PetriNetUnfolderBase]: For 172627/172627 co-relation queries the response was YES. [2024-06-27 22:24:28,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18720 conditions, 2901 events. 1566/2901 cut-off events. For 172627/172627 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 19220 event pairs, 360 based on Foata normal form. 2/2753 useless extension candidates. Maximal degree in co-relation 18554. Up to 2299 conditions per place. [2024-06-27 22:24:28,242 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 126 changer transitions 0/437 dead transitions. [2024-06-27 22:24:28,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 437 transitions, 6382 flow [2024-06-27 22:24:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:24:28,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:24:28,243 INFO L175 Difference]: Start difference. First operand has 359 places, 415 transitions, 5324 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:24:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 437 transitions, 6382 flow [2024-06-27 22:24:29,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 437 transitions, 6031 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:29,433 INFO L231 Difference]: Finished difference. Result has 361 places, 417 transitions, 5358 flow [2024-06-27 22:24:29,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5358, PETRI_PLACES=361, PETRI_TRANSITIONS=417} [2024-06-27 22:24:29,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 22:24:29,434 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 417 transitions, 5358 flow [2024-06-27 22:24:29,434 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 22:24:29,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:29,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:24:29,434 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:29,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1840170342, now seen corresponding path program 16 times [2024-06-27 22:24:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:29,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961861924] [2024-06-27 22:24:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961861924] [2024-06-27 22:24:31,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961861924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10655759] [2024-06-27 22:24:31,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:31,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:31,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:31,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 417 transitions, 5358 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 22:24:31,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:31,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:31,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:32,445 INFO L124 PetriNetUnfolderBase]: 1579/2922 cut-off events. [2024-06-27 22:24:32,445 INFO L125 PetriNetUnfolderBase]: For 177170/177170 co-relation queries the response was YES. [2024-06-27 22:24:32,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18908 conditions, 2922 events. 1579/2922 cut-off events. For 177170/177170 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 19437 event pairs, 364 based on Foata normal form. 2/2771 useless extension candidates. Maximal degree in co-relation 18741. Up to 2388 conditions per place. [2024-06-27 22:24:32,484 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 106 changer transitions 0/437 dead transitions. [2024-06-27 22:24:32,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 437 transitions, 6412 flow [2024-06-27 22:24:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:24:32,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:24:32,485 INFO L175 Difference]: Start difference. First operand has 361 places, 417 transitions, 5358 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:24:32,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 437 transitions, 6412 flow [2024-06-27 22:24:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 437 transitions, 6043 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:33,615 INFO L231 Difference]: Finished difference. Result has 363 places, 419 transitions, 5338 flow [2024-06-27 22:24:33,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5338, PETRI_PLACES=363, PETRI_TRANSITIONS=419} [2024-06-27 22:24:33,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 22:24:33,615 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 419 transitions, 5338 flow [2024-06-27 22:24:33,615 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 22:24:33,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:33,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:24:33,616 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:33,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1839962952, now seen corresponding path program 17 times [2024-06-27 22:24:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939405164] [2024-06-27 22:24:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939405164] [2024-06-27 22:24:35,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939405164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:35,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:35,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086651167] [2024-06-27 22:24:35,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:35,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:35,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:35,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:35,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 419 transitions, 5338 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 22:24:35,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:35,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:35,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:36,180 INFO L124 PetriNetUnfolderBase]: 1592/2946 cut-off events. [2024-06-27 22:24:36,180 INFO L125 PetriNetUnfolderBase]: For 181249/181249 co-relation queries the response was YES. [2024-06-27 22:24:36,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18986 conditions, 2946 events. 1592/2946 cut-off events. For 181249/181249 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 19610 event pairs, 358 based on Foata normal form. 2/2796 useless extension candidates. Maximal degree in co-relation 18818. Up to 2360 conditions per place. [2024-06-27 22:24:36,219 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 111 changer transitions 0/441 dead transitions. [2024-06-27 22:24:36,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 441 transitions, 6412 flow [2024-06-27 22:24:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:24:36,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:24:36,220 INFO L175 Difference]: Start difference. First operand has 363 places, 419 transitions, 5338 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:24:36,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 441 transitions, 6412 flow [2024-06-27 22:24:37,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 441 transitions, 6079 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:37,517 INFO L231 Difference]: Finished difference. Result has 365 places, 421 transitions, 5368 flow [2024-06-27 22:24:37,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5368, PETRI_PLACES=365, PETRI_TRANSITIONS=421} [2024-06-27 22:24:37,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 22:24:37,518 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 421 transitions, 5368 flow [2024-06-27 22:24:37,518 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 22:24:37,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:37,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:24:37,518 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:37,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1646230932, now seen corresponding path program 18 times [2024-06-27 22:24:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020150204] [2024-06-27 22:24:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:39,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020150204] [2024-06-27 22:24:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020150204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649733435] [2024-06-27 22:24:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:39,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:39,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 421 transitions, 5368 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 22:24:39,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:39,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:39,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:40,352 INFO L124 PetriNetUnfolderBase]: 1605/2969 cut-off events. [2024-06-27 22:24:40,352 INFO L125 PetriNetUnfolderBase]: For 184782/184782 co-relation queries the response was YES. [2024-06-27 22:24:40,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19163 conditions, 2969 events. 1605/2969 cut-off events. For 184782/184782 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 19830 event pairs, 372 based on Foata normal form. 2/2817 useless extension candidates. Maximal degree in co-relation 18994. Up to 2434 conditions per place. [2024-06-27 22:24:40,391 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 323 selfloop transitions, 109 changer transitions 0/441 dead transitions. [2024-06-27 22:24:40,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 441 transitions, 6438 flow [2024-06-27 22:24:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:24:40,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:24:40,392 INFO L175 Difference]: Start difference. First operand has 365 places, 421 transitions, 5368 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:24:40,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 441 transitions, 6438 flow [2024-06-27 22:24:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 441 transitions, 6091 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:41,623 INFO L231 Difference]: Finished difference. Result has 367 places, 423 transitions, 5384 flow [2024-06-27 22:24:41,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5021, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5384, PETRI_PLACES=367, PETRI_TRANSITIONS=423} [2024-06-27 22:24:41,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 22:24:41,624 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 423 transitions, 5384 flow [2024-06-27 22:24:41,624 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 22:24:41,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:41,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:24:41,624 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:41,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 365819532, now seen corresponding path program 19 times [2024-06-27 22:24:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431763233] [2024-06-27 22:24:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:43,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:43,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431763233] [2024-06-27 22:24:43,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431763233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:43,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:43,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123116270] [2024-06-27 22:24:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:43,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:43,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:43,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 423 transitions, 5384 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 22:24:43,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:43,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:43,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:44,410 INFO L124 PetriNetUnfolderBase]: 1618/2992 cut-off events. [2024-06-27 22:24:44,411 INFO L125 PetriNetUnfolderBase]: For 188627/188627 co-relation queries the response was YES. [2024-06-27 22:24:44,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 2992 events. 1618/2992 cut-off events. For 188627/188627 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 20001 event pairs, 372 based on Foata normal form. 2/2841 useless extension candidates. Maximal degree in co-relation 19119. Up to 2421 conditions per place. [2024-06-27 22:24:44,451 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 324 selfloop transitions, 112 changer transitions 0/445 dead transitions. [2024-06-27 22:24:44,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 445 transitions, 6474 flow [2024-06-27 22:24:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:24:44,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:24:44,452 INFO L175 Difference]: Start difference. First operand has 367 places, 423 transitions, 5384 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:24:44,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 445 transitions, 6474 flow [2024-06-27 22:24:45,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 445 transitions, 6127 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:45,699 INFO L231 Difference]: Finished difference. Result has 368 places, 425 transitions, 5410 flow [2024-06-27 22:24:45,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5037, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5410, PETRI_PLACES=368, PETRI_TRANSITIONS=425} [2024-06-27 22:24:45,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 22:24:45,700 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 425 transitions, 5410 flow [2024-06-27 22:24:45,700 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 22:24:45,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:45,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:45,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:24:45,700 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:45,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1640517012, now seen corresponding path program 20 times [2024-06-27 22:24:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985690034] [2024-06-27 22:24:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:47,161 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 22:24:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985690034] [2024-06-27 22:24:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985690034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:47,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:47,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828325023] [2024-06-27 22:24:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:47,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:47,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:47,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:24:47,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 425 transitions, 5410 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 22:24:47,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:47,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:24:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:48,247 INFO L124 PetriNetUnfolderBase]: 1631/3015 cut-off events. [2024-06-27 22:24:48,248 INFO L125 PetriNetUnfolderBase]: For 191557/191557 co-relation queries the response was YES. [2024-06-27 22:24:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19454 conditions, 3015 events. 1631/3015 cut-off events. For 191557/191557 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 20213 event pairs, 372 based on Foata normal form. 2/2872 useless extension candidates. Maximal degree in co-relation 19283. Up to 2240 conditions per place. [2024-06-27 22:24:48,284 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 308 selfloop transitions, 132 changer transitions 0/449 dead transitions. [2024-06-27 22:24:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 449 transitions, 6520 flow [2024-06-27 22:24:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:24:48,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:24:48,285 INFO L175 Difference]: Start difference. First operand has 368 places, 425 transitions, 5410 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:24:48,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 449 transitions, 6520 flow [2024-06-27 22:24:49,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 449 transitions, 6163 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:49,372 INFO L231 Difference]: Finished difference. Result has 371 places, 427 transitions, 5470 flow [2024-06-27 22:24:49,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5053, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5470, PETRI_PLACES=371, PETRI_TRANSITIONS=427} [2024-06-27 22:24:49,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 22:24:49,373 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 427 transitions, 5470 flow [2024-06-27 22:24:49,373 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 22:24:49,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:49,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:49,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:24:49,374 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:49,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash -515364092, now seen corresponding path program 7 times [2024-06-27 22:24:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644596755] [2024-06-27 22:24:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644596755] [2024-06-27 22:24:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644596755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:50,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:50,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137315083] [2024-06-27 22:24:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:50,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:51,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 427 transitions, 5470 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:51,748 INFO L124 PetriNetUnfolderBase]: 1361/2589 cut-off events. [2024-06-27 22:24:51,748 INFO L125 PetriNetUnfolderBase]: For 180769/180782 co-relation queries the response was YES. [2024-06-27 22:24:51,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17054 conditions, 2589 events. 1361/2589 cut-off events. For 180769/180782 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 17536 event pairs, 368 based on Foata normal form. 8/2400 useless extension candidates. Maximal degree in co-relation 16882. Up to 2063 conditions per place. [2024-06-27 22:24:51,784 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 146 changer transitions 0/439 dead transitions. [2024-06-27 22:24:51,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 439 transitions, 6408 flow [2024-06-27 22:24:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:24:51,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:24:51,785 INFO L175 Difference]: Start difference. First operand has 371 places, 427 transitions, 5470 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:24:51,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 439 transitions, 6408 flow [2024-06-27 22:24:53,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 439 transitions, 6007 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:53,097 INFO L231 Difference]: Finished difference. Result has 373 places, 429 transitions, 5436 flow [2024-06-27 22:24:53,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5069, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5436, PETRI_PLACES=373, PETRI_TRANSITIONS=429} [2024-06-27 22:24:53,098 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 22:24:53,098 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 429 transitions, 5436 flow [2024-06-27 22:24:53,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:53,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:53,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:24:53,098 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:53,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash -763525470, now seen corresponding path program 8 times [2024-06-27 22:24:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033727397] [2024-06-27 22:24:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:54,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:54,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033727397] [2024-06-27 22:24:54,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033727397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136726235] [2024-06-27 22:24:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:54,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:54,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 429 transitions, 5436 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:54,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:54,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:54,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:55,487 INFO L124 PetriNetUnfolderBase]: 1366/2599 cut-off events. [2024-06-27 22:24:55,487 INFO L125 PetriNetUnfolderBase]: For 179802/179815 co-relation queries the response was YES. [2024-06-27 22:24:55,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16953 conditions, 2599 events. 1366/2599 cut-off events. For 179802/179815 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 17636 event pairs, 363 based on Foata normal form. 8/2406 useless extension candidates. Maximal degree in co-relation 16780. Up to 2070 conditions per place. [2024-06-27 22:24:55,530 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 298 selfloop transitions, 129 changer transitions 0/441 dead transitions. [2024-06-27 22:24:55,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 441 transitions, 6382 flow [2024-06-27 22:24:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:24:55,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:24:55,531 INFO L175 Difference]: Start difference. First operand has 373 places, 429 transitions, 5436 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:24:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 441 transitions, 6382 flow [2024-06-27 22:24:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 441 transitions, 6039 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 22:24:57,107 INFO L231 Difference]: Finished difference. Result has 375 places, 431 transitions, 5430 flow [2024-06-27 22:24:57,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5093, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5430, PETRI_PLACES=375, PETRI_TRANSITIONS=431} [2024-06-27 22:24:57,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 22:24:57,108 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 431 transitions, 5430 flow [2024-06-27 22:24:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:57,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:57,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:57,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:24:57,108 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:57,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -515354792, now seen corresponding path program 9 times [2024-06-27 22:24:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:57,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752539846] [2024-06-27 22:24:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:58,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:58,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752539846] [2024-06-27 22:24:58,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752539846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:58,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:58,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:24:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874767703] [2024-06-27 22:24:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:58,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:24:58,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:58,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:24:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:24:58,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:24:58,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 431 transitions, 5430 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:58,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:58,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:24:58,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:59,662 INFO L124 PetriNetUnfolderBase]: 1371/2605 cut-off events. [2024-06-27 22:24:59,662 INFO L125 PetriNetUnfolderBase]: For 182126/182139 co-relation queries the response was YES. [2024-06-27 22:24:59,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16993 conditions, 2605 events. 1371/2605 cut-off events. For 182126/182139 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 17671 event pairs, 368 based on Foata normal form. 9/2412 useless extension candidates. Maximal degree in co-relation 16819. Up to 2198 conditions per place. [2024-06-27 22:24:59,695 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 332 selfloop transitions, 97 changer transitions 0/443 dead transitions. [2024-06-27 22:24:59,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 443 transitions, 6384 flow [2024-06-27 22:24:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:24:59,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:24:59,696 INFO L175 Difference]: Start difference. First operand has 375 places, 431 transitions, 5430 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:24:59,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 443 transitions, 6384 flow [2024-06-27 22:25:00,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 443 transitions, 6071 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:01,004 INFO L231 Difference]: Finished difference. Result has 377 places, 433 transitions, 5394 flow [2024-06-27 22:25:01,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5117, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5394, PETRI_PLACES=377, PETRI_TRANSITIONS=433} [2024-06-27 22:25:01,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 22:25:01,005 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 433 transitions, 5394 flow [2024-06-27 22:25:01,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:01,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:01,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:25:01,005 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:01,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -201664862, now seen corresponding path program 10 times [2024-06-27 22:25:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:01,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747978538] [2024-06-27 22:25:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:01,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:02,806 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 22:25:02,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747978538] [2024-06-27 22:25:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747978538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:02,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:02,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:02,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187325359] [2024-06-27 22:25:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:02,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:02,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 433 transitions, 5394 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:04,011 INFO L124 PetriNetUnfolderBase]: 1659/3066 cut-off events. [2024-06-27 22:25:04,011 INFO L125 PetriNetUnfolderBase]: For 187019/187019 co-relation queries the response was YES. [2024-06-27 22:25:04,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19437 conditions, 3066 events. 1659/3066 cut-off events. For 187019/187019 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 20640 event pairs, 482 based on Foata normal form. 1/2909 useless extension candidates. Maximal degree in co-relation 19262. Up to 2784 conditions per place. [2024-06-27 22:25:04,055 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 424 selfloop transitions, 20 changer transitions 0/453 dead transitions. [2024-06-27 22:25:04,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 453 transitions, 6430 flow [2024-06-27 22:25:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-27 22:25:04,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:25:04,056 INFO L175 Difference]: Start difference. First operand has 377 places, 433 transitions, 5394 flow. Second operand 12 states and 180 transitions. [2024-06-27 22:25:04,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 453 transitions, 6430 flow [2024-06-27 22:25:05,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 453 transitions, 6177 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:05,741 INFO L231 Difference]: Finished difference. Result has 380 places, 435 transitions, 5268 flow [2024-06-27 22:25:05,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5268, PETRI_PLACES=380, PETRI_TRANSITIONS=435} [2024-06-27 22:25:05,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 22:25:05,742 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 435 transitions, 5268 flow [2024-06-27 22:25:05,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:05,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:05,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:25:05,742 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:05,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -201655562, now seen corresponding path program 11 times [2024-06-27 22:25:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010631928] [2024-06-27 22:25:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:07,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:07,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010631928] [2024-06-27 22:25:07,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010631928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:07,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:07,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660903431] [2024-06-27 22:25:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:07,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:07,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 435 transitions, 5268 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:07,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:07,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:07,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:08,551 INFO L124 PetriNetUnfolderBase]: 1666/3076 cut-off events. [2024-06-27 22:25:08,551 INFO L125 PetriNetUnfolderBase]: For 189056/189056 co-relation queries the response was YES. [2024-06-27 22:25:08,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19321 conditions, 3076 events. 1666/3076 cut-off events. For 189056/189056 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 20709 event pairs, 482 based on Foata normal form. 1/2917 useless extension candidates. Maximal degree in co-relation 19145. Up to 2784 conditions per place. [2024-06-27 22:25:08,591 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 423 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2024-06-27 22:25:08,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 455 transitions, 6312 flow [2024-06-27 22:25:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 22:25:08,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-27 22:25:08,592 INFO L175 Difference]: Start difference. First operand has 380 places, 435 transitions, 5268 flow. Second operand 12 states and 182 transitions. [2024-06-27 22:25:08,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 455 transitions, 6312 flow [2024-06-27 22:25:10,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 455 transitions, 6209 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 22:25:10,246 INFO L231 Difference]: Finished difference. Result has 382 places, 437 transitions, 5302 flow [2024-06-27 22:25:10,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5302, PETRI_PLACES=382, PETRI_TRANSITIONS=437} [2024-06-27 22:25:10,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-27 22:25:10,247 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 437 transitions, 5302 flow [2024-06-27 22:25:10,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:10,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:10,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:10,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:25:10,247 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:10,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 572486488, now seen corresponding path program 12 times [2024-06-27 22:25:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604838971] [2024-06-27 22:25:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604838971] [2024-06-27 22:25:11,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604838971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:11,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210175119] [2024-06-27 22:25:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:11,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:11,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:12,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:12,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 437 transitions, 5302 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:12,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:12,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:12,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:13,031 INFO L124 PetriNetUnfolderBase]: 1386/2630 cut-off events. [2024-06-27 22:25:13,031 INFO L125 PetriNetUnfolderBase]: For 188684/188697 co-relation queries the response was YES. [2024-06-27 22:25:13,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16932 conditions, 2630 events. 1386/2630 cut-off events. For 188684/188697 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 17826 event pairs, 368 based on Foata normal form. 3/2426 useless extension candidates. Maximal degree in co-relation 16755. Up to 2098 conditions per place. [2024-06-27 22:25:13,067 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 318 selfloop transitions, 117 changer transitions 0/449 dead transitions. [2024-06-27 22:25:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 449 transitions, 6280 flow [2024-06-27 22:25:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:25:13,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:25:13,068 INFO L175 Difference]: Start difference. First operand has 382 places, 437 transitions, 5302 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:25:13,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 449 transitions, 6280 flow [2024-06-27 22:25:14,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 449 transitions, 6167 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 22:25:14,175 INFO L231 Difference]: Finished difference. Result has 383 places, 439 transitions, 5518 flow [2024-06-27 22:25:14,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5189, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5518, PETRI_PLACES=383, PETRI_TRANSITIONS=439} [2024-06-27 22:25:14,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:25:14,176 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 439 transitions, 5518 flow [2024-06-27 22:25:14,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:14,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:14,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:25:14,176 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:14,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash 520252673, now seen corresponding path program 2 times [2024-06-27 22:25:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437997655] [2024-06-27 22:25:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:15,776 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 22:25:15,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:15,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437997655] [2024-06-27 22:25:15,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437997655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:15,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:15,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319194411] [2024-06-27 22:25:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:15,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:15,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 439 transitions, 5518 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:15,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:15,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:17,016 INFO L124 PetriNetUnfolderBase]: 1690/3126 cut-off events. [2024-06-27 22:25:17,016 INFO L125 PetriNetUnfolderBase]: For 207733/207733 co-relation queries the response was YES. [2024-06-27 22:25:17,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20037 conditions, 3126 events. 1690/3126 cut-off events. For 207733/207733 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 21050 event pairs, 485 based on Foata normal form. 2/2964 useless extension candidates. Maximal degree in co-relation 19859. Up to 2819 conditions per place. [2024-06-27 22:25:17,055 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 434 selfloop transitions, 19 changer transitions 0/462 dead transitions. [2024-06-27 22:25:17,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 462 transitions, 6646 flow [2024-06-27 22:25:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:25:17,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:25:17,056 INFO L175 Difference]: Start difference. First operand has 383 places, 439 transitions, 5518 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:25:17,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 462 transitions, 6646 flow [2024-06-27 22:25:18,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 462 transitions, 6341 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:18,284 INFO L231 Difference]: Finished difference. Result has 385 places, 440 transitions, 5291 flow [2024-06-27 22:25:18,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5291, PETRI_PLACES=385, PETRI_TRANSITIONS=440} [2024-06-27 22:25:18,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 22:25:18,285 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 440 transitions, 5291 flow [2024-06-27 22:25:18,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:18,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:18,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:25:18,285 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:18,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1980893414, now seen corresponding path program 13 times [2024-06-27 22:25:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118503296] [2024-06-27 22:25:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118503296] [2024-06-27 22:25:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118503296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804624942] [2024-06-27 22:25:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:20,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:20,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 440 transitions, 5291 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:20,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:20,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:20,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:20,872 INFO L124 PetriNetUnfolderBase]: 1405/2672 cut-off events. [2024-06-27 22:25:20,872 INFO L125 PetriNetUnfolderBase]: For 196789/196802 co-relation queries the response was YES. [2024-06-27 22:25:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17296 conditions, 2672 events. 1405/2672 cut-off events. For 196789/196802 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 18198 event pairs, 371 based on Foata normal form. 3/2463 useless extension candidates. Maximal degree in co-relation 17117. Up to 2131 conditions per place. [2024-06-27 22:25:20,909 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 319 selfloop transitions, 119 changer transitions 0/452 dead transitions. [2024-06-27 22:25:20,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 452 transitions, 6279 flow [2024-06-27 22:25:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:25:20,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:25:20,910 INFO L175 Difference]: Start difference. First operand has 385 places, 440 transitions, 5291 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:25:20,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 452 transitions, 6279 flow [2024-06-27 22:25:22,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 452 transitions, 6225 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:22,196 INFO L231 Difference]: Finished difference. Result has 387 places, 442 transitions, 5574 flow [2024-06-27 22:25:22,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5574, PETRI_PLACES=387, PETRI_TRANSITIONS=442} [2024-06-27 22:25:22,197 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 22:25:22,197 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 442 transitions, 5574 flow [2024-06-27 22:25:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:22,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:22,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:22,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:25:22,198 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:22,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1847596888, now seen corresponding path program 14 times [2024-06-27 22:25:22,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:22,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874663085] [2024-06-27 22:25:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:22,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:23,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874663085] [2024-06-27 22:25:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874663085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:23,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:23,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047373807] [2024-06-27 22:25:23,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:23,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:23,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:23,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 442 transitions, 5574 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:24,570 INFO L124 PetriNetUnfolderBase]: 1410/2680 cut-off events. [2024-06-27 22:25:24,570 INFO L125 PetriNetUnfolderBase]: For 200471/200484 co-relation queries the response was YES. [2024-06-27 22:25:24,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17635 conditions, 2680 events. 1410/2680 cut-off events. For 200471/200484 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 18212 event pairs, 366 based on Foata normal form. 4/2468 useless extension candidates. Maximal degree in co-relation 17455. Up to 2259 conditions per place. [2024-06-27 22:25:24,607 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 362 selfloop transitions, 78 changer transitions 0/454 dead transitions. [2024-06-27 22:25:24,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 454 transitions, 6570 flow [2024-06-27 22:25:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:25:24,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:25:24,608 INFO L175 Difference]: Start difference. First operand has 387 places, 442 transitions, 5574 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:25:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 454 transitions, 6570 flow [2024-06-27 22:25:26,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 454 transitions, 6257 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:26,235 INFO L231 Difference]: Finished difference. Result has 389 places, 444 transitions, 5520 flow [2024-06-27 22:25:26,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5520, PETRI_PLACES=389, PETRI_TRANSITIONS=444} [2024-06-27 22:25:26,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 22:25:26,236 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 444 transitions, 5520 flow [2024-06-27 22:25:26,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:26,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:26,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:25:26,236 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -515354451, now seen corresponding path program 3 times [2024-06-27 22:25:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770828407] [2024-06-27 22:25:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:27,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770828407] [2024-06-27 22:25:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770828407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979106446] [2024-06-27 22:25:27,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:27,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:27,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:27,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 444 transitions, 5520 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:27,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:27,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:27,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:28,529 INFO L124 PetriNetUnfolderBase]: 1424/2720 cut-off events. [2024-06-27 22:25:28,529 INFO L125 PetriNetUnfolderBase]: For 216114/216130 co-relation queries the response was YES. [2024-06-27 22:25:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17808 conditions, 2720 events. 1424/2720 cut-off events. For 216114/216130 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 18615 event pairs, 381 based on Foata normal form. 4/2508 useless extension candidates. Maximal degree in co-relation 17627. Up to 2339 conditions per place. [2024-06-27 22:25:28,568 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 393 selfloop transitions, 52 changer transitions 0/459 dead transitions. [2024-06-27 22:25:28,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 459 transitions, 6586 flow [2024-06-27 22:25:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:25:28,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:25:28,570 INFO L175 Difference]: Start difference. First operand has 389 places, 444 transitions, 5520 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:25:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 459 transitions, 6586 flow [2024-06-27 22:25:30,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 459 transitions, 6351 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:30,296 INFO L231 Difference]: Finished difference. Result has 390 places, 445 transitions, 5431 flow [2024-06-27 22:25:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5285, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5431, PETRI_PLACES=390, PETRI_TRANSITIONS=445} [2024-06-27 22:25:30,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:25:30,296 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 445 transitions, 5431 flow [2024-06-27 22:25:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:30,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:30,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:30,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:25:30,297 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:30,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1779544694, now seen corresponding path program 15 times [2024-06-27 22:25:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:30,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165996614] [2024-06-27 22:25:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:30,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:32,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:32,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165996614] [2024-06-27 22:25:32,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165996614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:32,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:32,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:32,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706308693] [2024-06-27 22:25:32,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:32,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:32,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:32,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:32,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 445 transitions, 5431 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:32,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:32,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:32,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:33,257 INFO L124 PetriNetUnfolderBase]: 1429/2722 cut-off events. [2024-06-27 22:25:33,257 INFO L125 PetriNetUnfolderBase]: For 206488/206501 co-relation queries the response was YES. [2024-06-27 22:25:33,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17803 conditions, 2722 events. 1429/2722 cut-off events. For 206488/206501 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 18585 event pairs, 383 based on Foata normal form. 3/2506 useless extension candidates. Maximal degree in co-relation 17621. Up to 2171 conditions per place. [2024-06-27 22:25:33,296 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 122 changer transitions 0/457 dead transitions. [2024-06-27 22:25:33,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 457 transitions, 6437 flow [2024-06-27 22:25:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:25:33,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:25:33,297 INFO L175 Difference]: Start difference. First operand has 390 places, 445 transitions, 5431 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:25:33,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 457 transitions, 6437 flow [2024-06-27 22:25:34,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 457 transitions, 6315 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:34,844 INFO L231 Difference]: Finished difference. Result has 393 places, 447 transitions, 5660 flow [2024-06-27 22:25:34,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5660, PETRI_PLACES=393, PETRI_TRANSITIONS=447} [2024-06-27 22:25:34,844 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 22:25:34,844 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 447 transitions, 5660 flow [2024-06-27 22:25:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:34,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:34,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:34,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:25:34,845 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:34,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash -190227381, now seen corresponding path program 4 times [2024-06-27 22:25:34,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:34,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352295061] [2024-06-27 22:25:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:34,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352295061] [2024-06-27 22:25:36,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352295061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:36,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:36,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:36,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73027398] [2024-06-27 22:25:36,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:36,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:36,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:36,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:36,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 447 transitions, 5660 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:36,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:36,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:36,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:37,819 INFO L124 PetriNetUnfolderBase]: 1765/3275 cut-off events. [2024-06-27 22:25:37,820 INFO L125 PetriNetUnfolderBase]: For 252141/252141 co-relation queries the response was YES. [2024-06-27 22:25:37,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21758 conditions, 3275 events. 1765/3275 cut-off events. For 252141/252141 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 22268 event pairs, 492 based on Foata normal form. 2/3103 useless extension candidates. Maximal degree in co-relation 21575. Up to 2861 conditions per place. [2024-06-27 22:25:37,868 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 444 selfloop transitions, 25 changer transitions 0/478 dead transitions. [2024-06-27 22:25:37,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 478 transitions, 7274 flow [2024-06-27 22:25:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 22:25:37,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:25:37,869 INFO L175 Difference]: Start difference. First operand has 393 places, 447 transitions, 5660 flow. Second operand 12 states and 192 transitions. [2024-06-27 22:25:37,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 478 transitions, 7274 flow [2024-06-27 22:25:39,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 478 transitions, 6947 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:39,889 INFO L231 Difference]: Finished difference. Result has 396 places, 449 transitions, 5465 flow [2024-06-27 22:25:39,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5333, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5465, PETRI_PLACES=396, PETRI_TRANSITIONS=449} [2024-06-27 22:25:39,889 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 22:25:39,889 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 449 transitions, 5465 flow [2024-06-27 22:25:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:39,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:39,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:25:39,890 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:39,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1840178278, now seen corresponding path program 16 times [2024-06-27 22:25:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:39,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948616457] [2024-06-27 22:25:39,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:39,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:41,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948616457] [2024-06-27 22:25:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948616457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:41,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694960962] [2024-06-27 22:25:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:41,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:41,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 449 transitions, 5465 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:41,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:41,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:41,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:42,937 INFO L124 PetriNetUnfolderBase]: 1465/2803 cut-off events. [2024-06-27 22:25:42,937 INFO L125 PetriNetUnfolderBase]: For 241031/241044 co-relation queries the response was YES. [2024-06-27 22:25:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18879 conditions, 2803 events. 1465/2803 cut-off events. For 241031/241044 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19239 event pairs, 390 based on Foata normal form. 3/2578 useless extension candidates. Maximal degree in co-relation 18695. Up to 2235 conditions per place. [2024-06-27 22:25:42,975 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 331 selfloop transitions, 116 changer transitions 0/461 dead transitions. [2024-06-27 22:25:42,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 461 transitions, 6483 flow [2024-06-27 22:25:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:25:42,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:25:42,976 INFO L175 Difference]: Start difference. First operand has 396 places, 449 transitions, 5465 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:25:42,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 461 transitions, 6483 flow [2024-06-27 22:25:44,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 461 transitions, 6431 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:44,590 INFO L231 Difference]: Finished difference. Result has 399 places, 451 transitions, 5756 flow [2024-06-27 22:25:44,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5413, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5756, PETRI_PLACES=399, PETRI_TRANSITIONS=451} [2024-06-27 22:25:44,591 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 22:25:44,591 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 451 transitions, 5756 flow [2024-06-27 22:25:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:44,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:44,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:25:44,592 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:44,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash -515623562, now seen corresponding path program 17 times [2024-06-27 22:25:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437478186] [2024-06-27 22:25:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437478186] [2024-06-27 22:25:46,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437478186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:46,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:46,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126418032] [2024-06-27 22:25:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:46,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:46,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:25:46,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 451 transitions, 5756 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:46,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:46,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:25:46,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:47,386 INFO L124 PetriNetUnfolderBase]: 1470/2811 cut-off events. [2024-06-27 22:25:47,387 INFO L125 PetriNetUnfolderBase]: For 245163/245176 co-relation queries the response was YES. [2024-06-27 22:25:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19236 conditions, 2811 events. 1470/2811 cut-off events. For 245163/245176 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 19249 event pairs, 390 based on Foata normal form. 8/2590 useless extension candidates. Maximal degree in co-relation 19050. Up to 2242 conditions per place. [2024-06-27 22:25:47,432 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 147 changer transitions 0/463 dead transitions. [2024-06-27 22:25:47,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 463 transitions, 6782 flow [2024-06-27 22:25:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:25:47,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:25:47,433 INFO L175 Difference]: Start difference. First operand has 399 places, 451 transitions, 5756 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:25:47,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 463 transitions, 6782 flow [2024-06-27 22:25:49,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 463 transitions, 6463 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:49,221 INFO L231 Difference]: Finished difference. Result has 401 places, 453 transitions, 5846 flow [2024-06-27 22:25:49,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5846, PETRI_PLACES=401, PETRI_TRANSITIONS=453} [2024-06-27 22:25:49,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-27 22:25:49,222 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 453 transitions, 5846 flow [2024-06-27 22:25:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:49,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:49,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:49,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:25:49,222 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:49,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash -190613331, now seen corresponding path program 5 times [2024-06-27 22:25:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509801466] [2024-06-27 22:25:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509801466] [2024-06-27 22:25:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509801466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183486825] [2024-06-27 22:25:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:51,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:51,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 453 transitions, 5846 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:51,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:51,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:52,070 INFO L124 PetriNetUnfolderBase]: 1776/3301 cut-off events. [2024-06-27 22:25:52,070 INFO L125 PetriNetUnfolderBase]: For 239643/239643 co-relation queries the response was YES. [2024-06-27 22:25:52,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21643 conditions, 3301 events. 1776/3301 cut-off events. For 239643/239643 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 22457 event pairs, 504 based on Foata normal form. 2/3123 useless extension candidates. Maximal degree in co-relation 21456. Up to 2952 conditions per place. [2024-06-27 22:25:52,122 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 445 selfloop transitions, 23 changer transitions 0/477 dead transitions. [2024-06-27 22:25:52,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 477 transitions, 6978 flow [2024-06-27 22:25:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-27 22:25:52,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 22:25:52,123 INFO L175 Difference]: Start difference. First operand has 401 places, 453 transitions, 5846 flow. Second operand 12 states and 188 transitions. [2024-06-27 22:25:52,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 477 transitions, 6978 flow [2024-06-27 22:25:53,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 477 transitions, 6573 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:53,746 INFO L231 Difference]: Finished difference. Result has 404 places, 453 transitions, 5491 flow [2024-06-27 22:25:53,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5441, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5491, PETRI_PLACES=404, PETRI_TRANSITIONS=453} [2024-06-27 22:25:53,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 22:25:53,747 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 453 transitions, 5491 flow [2024-06-27 22:25:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:53,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:53,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:53,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:25:53,747 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:53,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash -190613672, now seen corresponding path program 18 times [2024-06-27 22:25:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433501042] [2024-06-27 22:25:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:55,454 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 22:25:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433501042] [2024-06-27 22:25:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433501042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:55,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:55,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:25:55,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648868142] [2024-06-27 22:25:55,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:25:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:25:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:25:55,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:25:55,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 453 transitions, 5491 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:55,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:55,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:25:55,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:56,777 INFO L124 PetriNetUnfolderBase]: 1783/3314 cut-off events. [2024-06-27 22:25:56,777 INFO L125 PetriNetUnfolderBase]: For 229059/229059 co-relation queries the response was YES. [2024-06-27 22:25:56,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21219 conditions, 3314 events. 1783/3314 cut-off events. For 229059/229059 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 22591 event pairs, 504 based on Foata normal form. 1/3133 useless extension candidates. Maximal degree in co-relation 21031. Up to 2973 conditions per place. [2024-06-27 22:25:56,827 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 441 selfloop transitions, 25 changer transitions 0/475 dead transitions. [2024-06-27 22:25:56,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 475 transitions, 6611 flow [2024-06-27 22:25:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:25:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:25:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-06-27 22:25:56,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-06-27 22:25:56,828 INFO L175 Difference]: Start difference. First operand has 404 places, 453 transitions, 5491 flow. Second operand 13 states and 196 transitions. [2024-06-27 22:25:56,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 475 transitions, 6611 flow [2024-06-27 22:25:58,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 475 transitions, 6559 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 22:25:58,684 INFO L231 Difference]: Finished difference. Result has 406 places, 455 transitions, 5608 flow [2024-06-27 22:25:58,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5608, PETRI_PLACES=406, PETRI_TRANSITIONS=455} [2024-06-27 22:25:58,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 22:25:58,684 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 455 transitions, 5608 flow [2024-06-27 22:25:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:58,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:58,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:25:58,685 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:58,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1847597229, now seen corresponding path program 6 times [2024-06-27 22:25:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067860788] [2024-06-27 22:25:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:00,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:00,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067860788] [2024-06-27 22:26:00,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067860788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:00,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740390002] [2024-06-27 22:26:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:00,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:00,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:00,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:26:00,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 455 transitions, 5608 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:00,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:00,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:26:00,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:01,012 INFO L124 PetriNetUnfolderBase]: 1486/2855 cut-off events. [2024-06-27 22:26:01,012 INFO L125 PetriNetUnfolderBase]: For 243496/243512 co-relation queries the response was YES. [2024-06-27 22:26:01,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18917 conditions, 2855 events. 1486/2855 cut-off events. For 243496/243512 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 19738 event pairs, 404 based on Foata normal form. 3/2626 useless extension candidates. Maximal degree in co-relation 18728. Up to 2445 conditions per place. [2024-06-27 22:26:01,049 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 411 selfloop transitions, 45 changer transitions 0/470 dead transitions. [2024-06-27 22:26:01,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 470 transitions, 6700 flow [2024-06-27 22:26:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:26:01,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:26:01,050 INFO L175 Difference]: Start difference. First operand has 406 places, 455 transitions, 5608 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:26:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 470 transitions, 6700 flow [2024-06-27 22:26:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 470 transitions, 6555 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-06-27 22:26:02,710 INFO L231 Difference]: Finished difference. Result has 405 places, 456 transitions, 5599 flow [2024-06-27 22:26:02,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5463, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5599, PETRI_PLACES=405, PETRI_TRANSITIONS=456} [2024-06-27 22:26:02,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-27 22:26:02,711 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 456 transitions, 5599 flow [2024-06-27 22:26:02,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:02,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:02,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:02,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:26:02,711 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:02,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -763515829, now seen corresponding path program 7 times [2024-06-27 22:26:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69334447] [2024-06-27 22:26:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:04,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69334447] [2024-06-27 22:26:04,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69334447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:04,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:04,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:04,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442133562] [2024-06-27 22:26:04,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:04,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:04,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:04,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:26:04,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 456 transitions, 5599 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:04,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:04,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:26:04,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:04,991 INFO L124 PetriNetUnfolderBase]: 1483/2850 cut-off events. [2024-06-27 22:26:04,992 INFO L125 PetriNetUnfolderBase]: For 222448/222464 co-relation queries the response was YES. [2024-06-27 22:26:05,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18514 conditions, 2850 events. 1483/2850 cut-off events. For 222448/222464 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 19683 event pairs, 403 based on Foata normal form. 4/2622 useless extension candidates. Maximal degree in co-relation 18324. Up to 2440 conditions per place. [2024-06-27 22:26:05,031 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 408 selfloop transitions, 48 changer transitions 0/470 dead transitions. [2024-06-27 22:26:05,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 470 transitions, 6651 flow [2024-06-27 22:26:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:26:05,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:26:05,032 INFO L175 Difference]: Start difference. First operand has 405 places, 456 transitions, 5599 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:26:05,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 470 transitions, 6651 flow [2024-06-27 22:26:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 470 transitions, 6539 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:26:06,557 INFO L231 Difference]: Finished difference. Result has 407 places, 456 transitions, 5587 flow [2024-06-27 22:26:06,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5487, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5587, PETRI_PLACES=407, PETRI_TRANSITIONS=456} [2024-06-27 22:26:06,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-27 22:26:06,558 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 456 transitions, 5587 flow [2024-06-27 22:26:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:06,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:06,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:26:06,558 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:06,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash -763516170, now seen corresponding path program 19 times [2024-06-27 22:26:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182084800] [2024-06-27 22:26:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:08,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:08,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182084800] [2024-06-27 22:26:08,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182084800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:08,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:08,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632483547] [2024-06-27 22:26:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:08,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:08,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:26:08,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 456 transitions, 5587 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:08,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:08,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:26:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:09,086 INFO L124 PetriNetUnfolderBase]: 1488/2852 cut-off events. [2024-06-27 22:26:09,086 INFO L125 PetriNetUnfolderBase]: For 213713/213726 co-relation queries the response was YES. [2024-06-27 22:26:09,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18570 conditions, 2852 events. 1488/2852 cut-off events. For 213713/213726 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 19642 event pairs, 391 based on Foata normal form. 9/2625 useless extension candidates. Maximal degree in co-relation 18379. Up to 2393 conditions per place. [2024-06-27 22:26:09,129 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 367 selfloop transitions, 87 changer transitions 0/468 dead transitions. [2024-06-27 22:26:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 468 transitions, 6631 flow [2024-06-27 22:26:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:26:09,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:26:09,130 INFO L175 Difference]: Start difference. First operand has 407 places, 456 transitions, 5587 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:26:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 468 transitions, 6631 flow [2024-06-27 22:26:10,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 468 transitions, 6454 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:10,819 INFO L231 Difference]: Finished difference. Result has 408 places, 458 transitions, 5707 flow [2024-06-27 22:26:10,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5707, PETRI_PLACES=408, PETRI_TRANSITIONS=458} [2024-06-27 22:26:10,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 22:26:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 458 transitions, 5707 flow [2024-06-27 22:26:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:10,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:26:10,820 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:10,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -770934780, now seen corresponding path program 20 times [2024-06-27 22:26:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935934555] [2024-06-27 22:26:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:12,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935934555] [2024-06-27 22:26:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935934555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990540584] [2024-06-27 22:26:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:12,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:26:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 458 transitions, 5707 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:12,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:12,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:26:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:13,744 INFO L124 PetriNetUnfolderBase]: 1493/2859 cut-off events. [2024-06-27 22:26:13,744 INFO L125 PetriNetUnfolderBase]: For 215978/215991 co-relation queries the response was YES. [2024-06-27 22:26:13,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18634 conditions, 2859 events. 1493/2859 cut-off events. For 215978/215991 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 19713 event pairs, 391 based on Foata normal form. 8/2629 useless extension candidates. Maximal degree in co-relation 18443. Up to 2279 conditions per place. [2024-06-27 22:26:13,787 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 325 selfloop transitions, 131 changer transitions 0/470 dead transitions. [2024-06-27 22:26:13,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 470 transitions, 6759 flow [2024-06-27 22:26:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:26:13,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:26:13,788 INFO L175 Difference]: Start difference. First operand has 408 places, 458 transitions, 5707 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:26:13,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 470 transitions, 6759 flow [2024-06-27 22:26:15,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 470 transitions, 6486 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:15,366 INFO L231 Difference]: Finished difference. Result has 410 places, 460 transitions, 5823 flow [2024-06-27 22:26:15,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5434, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5823, PETRI_PLACES=410, PETRI_TRANSITIONS=460} [2024-06-27 22:26:15,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 22:26:15,367 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 460 transitions, 5823 flow [2024-06-27 22:26:15,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:15,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:15,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:26:15,368 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:15,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -763784940, now seen corresponding path program 21 times [2024-06-27 22:26:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570044462] [2024-06-27 22:26:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570044462] [2024-06-27 22:26:17,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570044462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:17,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:26:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103050771] [2024-06-27 22:26:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:26:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:26:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:26:17,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:26:17,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 460 transitions, 5823 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:17,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:17,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:26:17,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:18,445 INFO L124 PetriNetUnfolderBase]: 1491/2856 cut-off events. [2024-06-27 22:26:18,445 INFO L125 PetriNetUnfolderBase]: For 205141/205154 co-relation queries the response was YES. [2024-06-27 22:26:18,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18431 conditions, 2856 events. 1491/2856 cut-off events. For 205141/205154 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 19674 event pairs, 391 based on Foata normal form. 8/2626 useless extension candidates. Maximal degree in co-relation 18239. Up to 2276 conditions per place. [2024-06-27 22:26:18,482 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 128 changer transitions 0/470 dead transitions. [2024-06-27 22:26:18,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 470 transitions, 6757 flow [2024-06-27 22:26:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:18,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:26:18,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:26:18,483 INFO L175 Difference]: Start difference. First operand has 410 places, 460 transitions, 5823 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:26:18,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 470 transitions, 6757 flow [2024-06-27 22:26:20,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 470 transitions, 6392 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:20,234 INFO L231 Difference]: Finished difference. Result has 412 places, 460 transitions, 5719 flow [2024-06-27 22:26:20,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5719, PETRI_PLACES=412, PETRI_TRANSITIONS=460} [2024-06-27 22:26:20,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 22:26:20,235 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 460 transitions, 5719 flow [2024-06-27 22:26:20,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:20,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:20,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:26:20,235 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:20,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2097615016, now seen corresponding path program 21 times [2024-06-27 22:26:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364761202] [2024-06-27 22:26:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364761202] [2024-06-27 22:26:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364761202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093018026] [2024-06-27 22:26:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:21,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:21,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 460 transitions, 5719 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 22:26:21,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:21,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:21,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:22,716 INFO L124 PetriNetUnfolderBase]: 1829/3398 cut-off events. [2024-06-27 22:26:22,717 INFO L125 PetriNetUnfolderBase]: For 222862/222862 co-relation queries the response was YES. [2024-06-27 22:26:22,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 3398 events. 1829/3398 cut-off events. For 222862/222862 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 23231 event pairs, 390 based on Foata normal form. 2/3210 useless extension candidates. Maximal degree in co-relation 21232. Up to 2909 conditions per place. [2024-06-27 22:26:22,766 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 436 selfloop transitions, 50 changer transitions 0/495 dead transitions. [2024-06-27 22:26:22,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 495 transitions, 6963 flow [2024-06-27 22:26:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:26:22,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:26:22,768 INFO L175 Difference]: Start difference. First operand has 412 places, 460 transitions, 5719 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:26:22,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 495 transitions, 6963 flow [2024-06-27 22:26:24,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 495 transitions, 6481 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:24,297 INFO L231 Difference]: Finished difference. Result has 413 places, 464 transitions, 5510 flow [2024-06-27 22:26:24,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5510, PETRI_PLACES=413, PETRI_TRANSITIONS=464} [2024-06-27 22:26:24,297 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 22:26:24,298 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 464 transitions, 5510 flow [2024-06-27 22:26:24,298 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 22:26:24,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:24,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:26:24,298 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:24,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash -697020534, now seen corresponding path program 22 times [2024-06-27 22:26:24,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:24,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420458286] [2024-06-27 22:26:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:24,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420458286] [2024-06-27 22:26:25,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420458286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:25,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:25,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:25,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407633536] [2024-06-27 22:26:25,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:25,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:25,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:25,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:25,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:25,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 464 transitions, 5510 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 22:26:25,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:25,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:25,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:26,786 INFO L124 PetriNetUnfolderBase]: 1879/3490 cut-off events. [2024-06-27 22:26:26,786 INFO L125 PetriNetUnfolderBase]: For 252906/252906 co-relation queries the response was YES. [2024-06-27 22:26:26,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22291 conditions, 3490 events. 1879/3490 cut-off events. For 252906/252906 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 24086 event pairs, 429 based on Foata normal form. 2/3309 useless extension candidates. Maximal degree in co-relation 22097. Up to 2942 conditions per place. [2024-06-27 22:26:26,837 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 429 selfloop transitions, 65 changer transitions 0/503 dead transitions. [2024-06-27 22:26:26,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 503 transitions, 7244 flow [2024-06-27 22:26:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:26:26,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:26:26,838 INFO L175 Difference]: Start difference. First operand has 413 places, 464 transitions, 5510 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:26:26,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 503 transitions, 7244 flow [2024-06-27 22:26:28,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 503 transitions, 7011 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:28,663 INFO L231 Difference]: Finished difference. Result has 416 places, 474 transitions, 5790 flow [2024-06-27 22:26:28,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5277, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5790, PETRI_PLACES=416, PETRI_TRANSITIONS=474} [2024-06-27 22:26:28,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 22:26:28,664 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 474 transitions, 5790 flow [2024-06-27 22:26:28,664 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 22:26:28,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:28,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:28,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:26:28,664 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:28,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1152300008, now seen corresponding path program 23 times [2024-06-27 22:26:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:28,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095376146] [2024-06-27 22:26:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:28,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095376146] [2024-06-27 22:26:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095376146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:29,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491179181] [2024-06-27 22:26:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:29,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:29,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 474 transitions, 5790 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 22:26:29,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:29,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:29,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:31,142 INFO L124 PetriNetUnfolderBase]: 1892/3515 cut-off events. [2024-06-27 22:26:31,142 INFO L125 PetriNetUnfolderBase]: For 259043/259043 co-relation queries the response was YES. [2024-06-27 22:26:31,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22636 conditions, 3515 events. 1892/3515 cut-off events. For 259043/259043 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 24302 event pairs, 457 based on Foata normal form. 2/3332 useless extension candidates. Maximal degree in co-relation 22440. Up to 3064 conditions per place. [2024-06-27 22:26:31,198 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 437 selfloop transitions, 57 changer transitions 0/503 dead transitions. [2024-06-27 22:26:31,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 503 transitions, 7342 flow [2024-06-27 22:26:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:26:31,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:26:31,200 INFO L175 Difference]: Start difference. First operand has 416 places, 474 transitions, 5790 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:26:31,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 503 transitions, 7342 flow [2024-06-27 22:26:32,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 503 transitions, 7080 flow, removed 100 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:32,994 INFO L231 Difference]: Finished difference. Result has 420 places, 476 transitions, 5809 flow [2024-06-27 22:26:32,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5556, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5809, PETRI_PLACES=420, PETRI_TRANSITIONS=476} [2024-06-27 22:26:32,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-27 22:26:32,995 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 476 transitions, 5809 flow [2024-06-27 22:26:32,995 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 22:26:32,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:32,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:26:32,995 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1152507398, now seen corresponding path program 24 times [2024-06-27 22:26:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355749966] [2024-06-27 22:26:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:34,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:34,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355749966] [2024-06-27 22:26:34,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355749966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:34,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:34,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:34,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994982904] [2024-06-27 22:26:34,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:34,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:34,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:34,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 476 transitions, 5809 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 22:26:34,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:34,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:34,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:35,539 INFO L124 PetriNetUnfolderBase]: 1889/3511 cut-off events. [2024-06-27 22:26:35,540 INFO L125 PetriNetUnfolderBase]: For 230753/230753 co-relation queries the response was YES. [2024-06-27 22:26:35,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22030 conditions, 3511 events. 1889/3511 cut-off events. For 230753/230753 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 24283 event pairs, 474 based on Foata normal form. 2/3326 useless extension candidates. Maximal degree in co-relation 21832. Up to 3129 conditions per place. [2024-06-27 22:26:35,594 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 441 selfloop transitions, 50 changer transitions 0/500 dead transitions. [2024-06-27 22:26:35,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 500 transitions, 6879 flow [2024-06-27 22:26:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:26:35,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:26:35,595 INFO L175 Difference]: Start difference. First operand has 420 places, 476 transitions, 5809 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:26:35,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 500 transitions, 6879 flow [2024-06-27 22:26:37,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 500 transitions, 6538 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:37,266 INFO L231 Difference]: Finished difference. Result has 422 places, 476 transitions, 5577 flow [2024-06-27 22:26:37,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5577, PETRI_PLACES=422, PETRI_TRANSITIONS=476} [2024-06-27 22:26:37,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-27 22:26:37,267 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 476 transitions, 5577 flow [2024-06-27 22:26:37,267 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 22:26:37,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:37,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:26:37,267 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:37,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1503779308, now seen corresponding path program 25 times [2024-06-27 22:26:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:37,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512401694] [2024-06-27 22:26:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512401694] [2024-06-27 22:26:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512401694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:38,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:26:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021202019] [2024-06-27 22:26:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:26:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:26:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:26:38,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:26:38,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 476 transitions, 5577 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:38,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:38,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:26:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:39,411 INFO L124 PetriNetUnfolderBase]: 1806/3428 cut-off events. [2024-06-27 22:26:39,411 INFO L125 PetriNetUnfolderBase]: For 234244/234248 co-relation queries the response was YES. [2024-06-27 22:26:39,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20909 conditions, 3428 events. 1806/3428 cut-off events. For 234244/234248 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 24228 event pairs, 211 based on Foata normal form. 5/3279 useless extension candidates. Maximal degree in co-relation 20710. Up to 2134 conditions per place. [2024-06-27 22:26:39,464 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 268 selfloop transitions, 113 changer transitions 0/510 dead transitions. [2024-06-27 22:26:39,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 510 transitions, 6617 flow [2024-06-27 22:26:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 22:26:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-27 22:26:39,465 INFO L175 Difference]: Start difference. First operand has 422 places, 476 transitions, 5577 flow. Second operand 11 states and 201 transitions. [2024-06-27 22:26:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 510 transitions, 6617 flow [2024-06-27 22:26:41,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 510 transitions, 6500 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:41,171 INFO L231 Difference]: Finished difference. Result has 423 places, 480 transitions, 5902 flow [2024-06-27 22:26:41,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5460, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5902, PETRI_PLACES=423, PETRI_TRANSITIONS=480} [2024-06-27 22:26:41,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-27 22:26:41,172 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 480 transitions, 5902 flow [2024-06-27 22:26:41,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:41,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:41,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:26:41,172 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:41,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 625304366, now seen corresponding path program 26 times [2024-06-27 22:26:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650041088] [2024-06-27 22:26:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650041088] [2024-06-27 22:26:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650041088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:42,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576068040] [2024-06-27 22:26:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:42,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:42,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 480 transitions, 5902 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 22:26:42,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:42,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:43,869 INFO L124 PetriNetUnfolderBase]: 1940/3597 cut-off events. [2024-06-27 22:26:43,870 INFO L125 PetriNetUnfolderBase]: For 244394/244394 co-relation queries the response was YES. [2024-06-27 22:26:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23101 conditions, 3597 events. 1940/3597 cut-off events. For 244394/244394 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24949 event pairs, 406 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 22901. Up to 3073 conditions per place. [2024-06-27 22:26:43,926 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 449 selfloop transitions, 59 changer transitions 0/517 dead transitions. [2024-06-27 22:26:43,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 517 transitions, 7387 flow [2024-06-27 22:26:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:26:43,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:26:43,927 INFO L175 Difference]: Start difference. First operand has 423 places, 480 transitions, 5902 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:26:43,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 517 transitions, 7387 flow [2024-06-27 22:26:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 517 transitions, 6909 flow, removed 135 selfloop flow, removed 11 redundant places. [2024-06-27 22:26:45,519 INFO L231 Difference]: Finished difference. Result has 423 places, 488 transitions, 5930 flow [2024-06-27 22:26:45,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5562, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5930, PETRI_PLACES=423, PETRI_TRANSITIONS=488} [2024-06-27 22:26:45,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-27 22:26:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 488 transitions, 5930 flow [2024-06-27 22:26:45,520 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 22:26:45,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:45,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:26:45,520 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:45,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -889811090, now seen corresponding path program 27 times [2024-06-27 22:26:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019645189] [2024-06-27 22:26:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:45,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:46,990 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 22:26:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019645189] [2024-06-27 22:26:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019645189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519085161] [2024-06-27 22:26:46,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:46,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:47,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:47,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 488 transitions, 5930 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 22:26:47,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:47,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:47,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:48,423 INFO L124 PetriNetUnfolderBase]: 1967/3648 cut-off events. [2024-06-27 22:26:48,424 INFO L125 PetriNetUnfolderBase]: For 237402/237402 co-relation queries the response was YES. [2024-06-27 22:26:48,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23058 conditions, 3648 events. 1967/3648 cut-off events. For 237402/237402 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 25405 event pairs, 478 based on Foata normal form. 2/3457 useless extension candidates. Maximal degree in co-relation 22859. Up to 3262 conditions per place. [2024-06-27 22:26:48,477 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 456 selfloop transitions, 51 changer transitions 0/516 dead transitions. [2024-06-27 22:26:48,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 516 transitions, 7216 flow [2024-06-27 22:26:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:26:48,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:26:48,478 INFO L175 Difference]: Start difference. First operand has 423 places, 488 transitions, 5930 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:26:48,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 516 transitions, 7216 flow [2024-06-27 22:26:50,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 516 transitions, 6946 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:50,462 INFO L231 Difference]: Finished difference. Result has 425 places, 494 transitions, 5977 flow [2024-06-27 22:26:50,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5977, PETRI_PLACES=425, PETRI_TRANSITIONS=494} [2024-06-27 22:26:50,462 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-27 22:26:50,463 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 494 transitions, 5977 flow [2024-06-27 22:26:50,463 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 22:26:50,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:50,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:50,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:26:50,463 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:50,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:50,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1336586794, now seen corresponding path program 28 times [2024-06-27 22:26:50,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:50,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27832198] [2024-06-27 22:26:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:50,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:51,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:51,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27832198] [2024-06-27 22:26:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27832198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:51,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:51,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414822866] [2024-06-27 22:26:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:52,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:52,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 494 transitions, 5977 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 22:26:52,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:52,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:53,335 INFO L124 PetriNetUnfolderBase]: 1994/3697 cut-off events. [2024-06-27 22:26:53,335 INFO L125 PetriNetUnfolderBase]: For 241979/241979 co-relation queries the response was YES. [2024-06-27 22:26:53,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23312 conditions, 3697 events. 1994/3697 cut-off events. For 241979/241979 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 25864 event pairs, 478 based on Foata normal form. 2/3509 useless extension candidates. Maximal degree in co-relation 23112. Up to 3239 conditions per place. [2024-06-27 22:26:53,393 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 455 selfloop transitions, 60 changer transitions 0/524 dead transitions. [2024-06-27 22:26:53,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 524 transitions, 7291 flow [2024-06-27 22:26:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:26:53,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:26:53,395 INFO L175 Difference]: Start difference. First operand has 425 places, 494 transitions, 5977 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:26:53,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 524 transitions, 7291 flow [2024-06-27 22:26:55,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 524 transitions, 7054 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:55,183 INFO L231 Difference]: Finished difference. Result has 427 places, 500 transitions, 6079 flow [2024-06-27 22:26:55,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5740, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6079, PETRI_PLACES=427, PETRI_TRANSITIONS=500} [2024-06-27 22:26:55,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-27 22:26:55,184 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 500 transitions, 6079 flow [2024-06-27 22:26:55,184 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 22:26:55,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:55,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:26:55,184 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:26:55,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -895525010, now seen corresponding path program 29 times [2024-06-27 22:26:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515320144] [2024-06-27 22:26:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515320144] [2024-06-27 22:26:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515320144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:56,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689500390] [2024-06-27 22:26:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:56,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:26:56,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 500 transitions, 6079 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 22:26:56,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:56,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:26:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:57,776 INFO L124 PetriNetUnfolderBase]: 2021/3747 cut-off events. [2024-06-27 22:26:57,776 INFO L125 PetriNetUnfolderBase]: For 247115/247115 co-relation queries the response was YES. [2024-06-27 22:26:57,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23712 conditions, 3747 events. 2021/3747 cut-off events. For 247115/247115 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 26286 event pairs, 472 based on Foata normal form. 2/3561 useless extension candidates. Maximal degree in co-relation 23511. Up to 3173 conditions per place. [2024-06-27 22:26:57,834 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 451 selfloop transitions, 72 changer transitions 0/532 dead transitions. [2024-06-27 22:26:57,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 532 transitions, 7421 flow [2024-06-27 22:26:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:26:57,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:26:57,836 INFO L175 Difference]: Start difference. First operand has 427 places, 500 transitions, 6079 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:26:57,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 532 transitions, 7421 flow [2024-06-27 22:27:00,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 532 transitions, 7162 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:00,044 INFO L231 Difference]: Finished difference. Result has 429 places, 506 transitions, 6187 flow [2024-06-27 22:27:00,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5820, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6187, PETRI_PLACES=429, PETRI_TRANSITIONS=506} [2024-06-27 22:27:00,045 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 22:27:00,045 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 506 transitions, 6187 flow [2024-06-27 22:27:00,045 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 22:27:00,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:00,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:00,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:27:00,046 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:00,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash -704182636, now seen corresponding path program 30 times [2024-06-27 22:27:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669330313] [2024-06-27 22:27:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:00,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:01,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669330313] [2024-06-27 22:27:01,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669330313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:01,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347029139] [2024-06-27 22:27:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:01,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:01,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 506 transitions, 6187 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 22:27:01,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:01,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:02,871 INFO L124 PetriNetUnfolderBase]: 2041/3784 cut-off events. [2024-06-27 22:27:02,871 INFO L125 PetriNetUnfolderBase]: For 253274/253274 co-relation queries the response was YES. [2024-06-27 22:27:02,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24063 conditions, 3784 events. 2041/3784 cut-off events. For 253274/253274 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 26585 event pairs, 510 based on Foata normal form. 2/3589 useless extension candidates. Maximal degree in co-relation 23861. Up to 3331 conditions per place. [2024-06-27 22:27:02,927 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 432 selfloop transitions, 91 changer transitions 0/532 dead transitions. [2024-06-27 22:27:02,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 532 transitions, 7497 flow [2024-06-27 22:27:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:27:02,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:27:02,929 INFO L175 Difference]: Start difference. First operand has 429 places, 506 transitions, 6187 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:27:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 532 transitions, 7497 flow [2024-06-27 22:27:04,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 532 transitions, 7210 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:04,890 INFO L231 Difference]: Finished difference. Result has 431 places, 510 transitions, 6280 flow [2024-06-27 22:27:04,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5900, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6280, PETRI_PLACES=431, PETRI_TRANSITIONS=510} [2024-06-27 22:27:04,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 22:27:04,890 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 510 transitions, 6280 flow [2024-06-27 22:27:04,890 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 22:27:04,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:04,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:27:04,891 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:04,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash -711332476, now seen corresponding path program 31 times [2024-06-27 22:27:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:04,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284270297] [2024-06-27 22:27:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284270297] [2024-06-27 22:27:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284270297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:06,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579973444] [2024-06-27 22:27:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:06,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:06,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 510 transitions, 6280 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 22:27:06,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:06,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:06,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:07,822 INFO L124 PetriNetUnfolderBase]: 2061/3821 cut-off events. [2024-06-27 22:27:07,822 INFO L125 PetriNetUnfolderBase]: For 258418/258418 co-relation queries the response was YES. [2024-06-27 22:27:07,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24321 conditions, 3821 events. 2061/3821 cut-off events. For 258418/258418 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 26960 event pairs, 518 based on Foata normal form. 2/3625 useless extension candidates. Maximal degree in co-relation 24118. Up to 3367 conditions per place. [2024-06-27 22:27:07,881 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 443 selfloop transitions, 84 changer transitions 0/536 dead transitions. [2024-06-27 22:27:07,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 536 transitions, 7602 flow [2024-06-27 22:27:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:27:07,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:27:07,882 INFO L175 Difference]: Start difference. First operand has 431 places, 510 transitions, 6280 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:27:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 536 transitions, 7602 flow [2024-06-27 22:27:10,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 536 transitions, 7262 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:10,044 INFO L231 Difference]: Finished difference. Result has 433 places, 514 transitions, 6310 flow [2024-06-27 22:27:10,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5940, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6310, PETRI_PLACES=433, PETRI_TRANSITIONS=514} [2024-06-27 22:27:10,044 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 22:27:10,044 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 514 transitions, 6310 flow [2024-06-27 22:27:10,045 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 22:27:10,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:10,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:27:10,045 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:10,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:10,045 INFO L85 PathProgramCache]: Analyzing trace with hash -711539866, now seen corresponding path program 32 times [2024-06-27 22:27:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:10,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798929309] [2024-06-27 22:27:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:10,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:11,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:11,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798929309] [2024-06-27 22:27:11,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798929309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:11,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:11,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070983105] [2024-06-27 22:27:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:11,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:11,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:11,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:11,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:11,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:11,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 514 transitions, 6310 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 22:27:11,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:11,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:13,063 INFO L124 PetriNetUnfolderBase]: 2081/3858 cut-off events. [2024-06-27 22:27:13,063 INFO L125 PetriNetUnfolderBase]: For 263671/263671 co-relation queries the response was YES. [2024-06-27 22:27:13,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24541 conditions, 3858 events. 2081/3858 cut-off events. For 263671/263671 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 27239 event pairs, 512 based on Foata normal form. 2/3665 useless extension candidates. Maximal degree in co-relation 24337. Up to 3327 conditions per place. [2024-06-27 22:27:13,122 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 439 selfloop transitions, 94 changer transitions 0/542 dead transitions. [2024-06-27 22:27:13,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 542 transitions, 7656 flow [2024-06-27 22:27:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:13,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:27:13,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:27:13,124 INFO L175 Difference]: Start difference. First operand has 433 places, 514 transitions, 6310 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:27:13,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 542 transitions, 7656 flow [2024-06-27 22:27:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 542 transitions, 7326 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:15,238 INFO L231 Difference]: Finished difference. Result has 435 places, 518 transitions, 6374 flow [2024-06-27 22:27:15,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5980, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6374, PETRI_PLACES=435, PETRI_TRANSITIONS=518} [2024-06-27 22:27:15,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 22:27:15,238 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 518 transitions, 6374 flow [2024-06-27 22:27:15,238 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 22:27:15,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:15,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:15,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:27:15,238 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:15,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash -905271886, now seen corresponding path program 33 times [2024-06-27 22:27:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:15,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426872319] [2024-06-27 22:27:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:16,883 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 22:27:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426872319] [2024-06-27 22:27:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426872319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:16,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:16,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263592594] [2024-06-27 22:27:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:17,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:17,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 518 transitions, 6374 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 22:27:17,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:17,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:18,512 INFO L124 PetriNetUnfolderBase]: 2101/3895 cut-off events. [2024-06-27 22:27:18,513 INFO L125 PetriNetUnfolderBase]: For 267849/267849 co-relation queries the response was YES. [2024-06-27 22:27:18,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24830 conditions, 3895 events. 2101/3895 cut-off events. For 267849/267849 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 27604 event pairs, 532 based on Foata normal form. 2/3697 useless extension candidates. Maximal degree in co-relation 24625. Up to 3439 conditions per place. [2024-06-27 22:27:18,573 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 456 selfloop transitions, 79 changer transitions 0/544 dead transitions. [2024-06-27 22:27:18,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 544 transitions, 7720 flow [2024-06-27 22:27:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:27:18,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:27:18,574 INFO L175 Difference]: Start difference. First operand has 435 places, 518 transitions, 6374 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:27:18,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 544 transitions, 7720 flow [2024-06-27 22:27:21,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 544 transitions, 7366 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:21,249 INFO L231 Difference]: Finished difference. Result has 437 places, 522 transitions, 6388 flow [2024-06-27 22:27:21,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6020, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6388, PETRI_PLACES=437, PETRI_TRANSITIONS=522} [2024-06-27 22:27:21,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 22:27:21,249 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 522 transitions, 6388 flow [2024-06-27 22:27:21,250 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 22:27:21,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:21,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:21,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:27:21,250 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:21,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash -905479276, now seen corresponding path program 34 times [2024-06-27 22:27:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878884590] [2024-06-27 22:27:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878884590] [2024-06-27 22:27:23,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878884590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:23,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749274498] [2024-06-27 22:27:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:23,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:23,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:23,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:23,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:23,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:23,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 522 transitions, 6388 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 22:27:23,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:23,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:23,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:24,651 INFO L124 PetriNetUnfolderBase]: 2121/3931 cut-off events. [2024-06-27 22:27:24,651 INFO L125 PetriNetUnfolderBase]: For 273122/273122 co-relation queries the response was YES. [2024-06-27 22:27:24,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3931 events. 2121/3931 cut-off events. For 273122/273122 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 27928 event pairs, 532 based on Foata normal form. 2/3735 useless extension candidates. Maximal degree in co-relation 24800. Up to 3421 conditions per place. [2024-06-27 22:27:24,721 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 456 selfloop transitions, 85 changer transitions 0/550 dead transitions. [2024-06-27 22:27:24,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 550 transitions, 7758 flow [2024-06-27 22:27:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:27:24,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:27:24,722 INFO L175 Difference]: Start difference. First operand has 437 places, 522 transitions, 6388 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:27:24,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 550 transitions, 7758 flow [2024-06-27 22:27:27,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 550 transitions, 7434 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:27,349 INFO L231 Difference]: Finished difference. Result has 439 places, 526 transitions, 6448 flow [2024-06-27 22:27:27,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6064, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6448, PETRI_PLACES=439, PETRI_TRANSITIONS=526} [2024-06-27 22:27:27,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 22:27:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 526 transitions, 6448 flow [2024-06-27 22:27:27,350 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 22:27:27,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:27,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:27:27,351 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:27,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -910985806, now seen corresponding path program 35 times [2024-06-27 22:27:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010091983] [2024-06-27 22:27:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010091983] [2024-06-27 22:27:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010091983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:28,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455551315] [2024-06-27 22:27:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:28,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:28,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 526 transitions, 6448 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 22:27:28,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:28,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:28,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:30,271 INFO L124 PetriNetUnfolderBase]: 2125/3939 cut-off events. [2024-06-27 22:27:30,271 INFO L125 PetriNetUnfolderBase]: For 243645/243645 co-relation queries the response was YES. [2024-06-27 22:27:30,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24407 conditions, 3939 events. 2125/3939 cut-off events. For 243645/243645 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 27989 event pairs, 524 based on Foata normal form. 2/3751 useless extension candidates. Maximal degree in co-relation 24200. Up to 3245 conditions per place. [2024-06-27 22:27:30,337 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 440 selfloop transitions, 107 changer transitions 0/556 dead transitions. [2024-06-27 22:27:30,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 556 transitions, 7842 flow [2024-06-27 22:27:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:30,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:27:30,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:27:30,338 INFO L175 Difference]: Start difference. First operand has 439 places, 526 transitions, 6448 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:27:30,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 556 transitions, 7842 flow [2024-06-27 22:27:32,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 556 transitions, 7502 flow, removed 88 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:32,880 INFO L231 Difference]: Finished difference. Result has 441 places, 530 transitions, 6540 flow [2024-06-27 22:27:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6108, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6540, PETRI_PLACES=441, PETRI_TRANSITIONS=530} [2024-06-27 22:27:32,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-27 22:27:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 530 transitions, 6540 flow [2024-06-27 22:27:32,881 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 22:27:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:27:32,881 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:32,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash 593754201, now seen corresponding path program 1 times [2024-06-27 22:27:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529073390] [2024-06-27 22:27:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529073390] [2024-06-27 22:27:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529073390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:34,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:34,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765691577] [2024-06-27 22:27:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:34,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:34,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:34,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 530 transitions, 6540 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:34,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:34,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:34,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:36,019 INFO L124 PetriNetUnfolderBase]: 2174/4071 cut-off events. [2024-06-27 22:27:36,019 INFO L125 PetriNetUnfolderBase]: For 278983/278983 co-relation queries the response was YES. [2024-06-27 22:27:36,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25479 conditions, 4071 events. 2174/4071 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 29251 event pairs, 535 based on Foata normal form. 2/3865 useless extension candidates. Maximal degree in co-relation 25271. Up to 3433 conditions per place. [2024-06-27 22:27:36,086 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 507 selfloop transitions, 49 changer transitions 0/565 dead transitions. [2024-06-27 22:27:36,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 565 transitions, 8530 flow [2024-06-27 22:27:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 22:27:36,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:27:36,088 INFO L175 Difference]: Start difference. First operand has 441 places, 530 transitions, 6540 flow. Second operand 12 states and 200 transitions. [2024-06-27 22:27:36,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 565 transitions, 8530 flow [2024-06-27 22:27:38,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 565 transitions, 8138 flow, removed 92 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:38,424 INFO L231 Difference]: Finished difference. Result has 446 places, 534 transitions, 6403 flow [2024-06-27 22:27:38,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6403, PETRI_PLACES=446, PETRI_TRANSITIONS=534} [2024-06-27 22:27:38,425 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 22:27:38,425 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 534 transitions, 6403 flow [2024-06-27 22:27:38,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:38,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:38,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:27:38,426 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:38,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash 600183291, now seen corresponding path program 2 times [2024-06-27 22:27:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:38,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544850192] [2024-06-27 22:27:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:38,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:39,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:39,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544850192] [2024-06-27 22:27:39,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544850192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:39,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:39,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082687134] [2024-06-27 22:27:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:39,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:40,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:27:40,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 534 transitions, 6403 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:40,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:40,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:27:40,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:41,486 INFO L124 PetriNetUnfolderBase]: 2191/4111 cut-off events. [2024-06-27 22:27:41,486 INFO L125 PetriNetUnfolderBase]: For 277895/277895 co-relation queries the response was YES. [2024-06-27 22:27:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25335 conditions, 4111 events. 2191/4111 cut-off events. For 277895/277895 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 29588 event pairs, 569 based on Foata normal form. 2/3900 useless extension candidates. Maximal degree in co-relation 25124. Up to 3586 conditions per place. [2024-06-27 22:27:41,556 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 506 selfloop transitions, 48 changer transitions 0/563 dead transitions. [2024-06-27 22:27:41,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 563 transitions, 8272 flow [2024-06-27 22:27:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-27 22:27:41,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-27 22:27:41,557 INFO L175 Difference]: Start difference. First operand has 446 places, 534 transitions, 6403 flow. Second operand 12 states and 195 transitions. [2024-06-27 22:27:41,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 563 transitions, 8272 flow [2024-06-27 22:27:43,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 563 transitions, 8160 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:43,984 INFO L231 Difference]: Finished difference. Result has 452 places, 536 transitions, 6484 flow [2024-06-27 22:27:43,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6293, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6484, PETRI_PLACES=452, PETRI_TRANSITIONS=536} [2024-06-27 22:27:43,984 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 22:27:43,984 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 536 transitions, 6484 flow [2024-06-27 22:27:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:43,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:43,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:43,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:27:43,985 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:43,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -749501675, now seen corresponding path program 3 times [2024-06-27 22:27:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16833535] [2024-06-27 22:27:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:43,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:45,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16833535] [2024-06-27 22:27:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16833535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162379222] [2024-06-27 22:27:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:45,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:27:45,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 536 transitions, 6484 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:45,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:45,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:27:45,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:46,610 INFO L124 PetriNetUnfolderBase]: 1857/3648 cut-off events. [2024-06-27 22:27:46,610 INFO L125 PetriNetUnfolderBase]: For 318585/318598 co-relation queries the response was YES. [2024-06-27 22:27:46,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23704 conditions, 3648 events. 1857/3648 cut-off events. For 318585/318598 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 26978 event pairs, 477 based on Foata normal form. 4/3384 useless extension candidates. Maximal degree in co-relation 23490. Up to 2385 conditions per place. [2024-06-27 22:27:46,671 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 486 selfloop transitions, 72 changer transitions 0/572 dead transitions. [2024-06-27 22:27:46,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 572 transitions, 8548 flow [2024-06-27 22:27:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:27:46,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:27:46,672 INFO L175 Difference]: Start difference. First operand has 452 places, 536 transitions, 6484 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:27:46,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 572 transitions, 8548 flow [2024-06-27 22:27:49,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 572 transitions, 8464 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:49,203 INFO L231 Difference]: Finished difference. Result has 456 places, 541 transitions, 6787 flow [2024-06-27 22:27:49,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6400, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6787, PETRI_PLACES=456, PETRI_TRANSITIONS=541} [2024-06-27 22:27:49,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-27 22:27:49,204 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 541 transitions, 6787 flow [2024-06-27 22:27:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:49,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:49,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:27:49,205 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:49,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash -572133005, now seen corresponding path program 4 times [2024-06-27 22:27:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784378762] [2024-06-27 22:27:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784378762] [2024-06-27 22:27:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784378762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9607305] [2024-06-27 22:27:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:50,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:50,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:50,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:27:50,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 541 transitions, 6787 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:50,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:50,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:27:50,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:52,103 INFO L124 PetriNetUnfolderBase]: 1871/3685 cut-off events. [2024-06-27 22:27:52,103 INFO L125 PetriNetUnfolderBase]: For 327051/327064 co-relation queries the response was YES. [2024-06-27 22:27:52,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24143 conditions, 3685 events. 1871/3685 cut-off events. For 327051/327064 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 27375 event pairs, 584 based on Foata normal form. 10/3413 useless extension candidates. Maximal degree in co-relation 23925. Up to 3135 conditions per place. [2024-06-27 22:27:52,168 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 479 selfloop transitions, 67 changer transitions 0/560 dead transitions. [2024-06-27 22:27:52,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 560 transitions, 8070 flow [2024-06-27 22:27:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:27:52,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:27:52,169 INFO L175 Difference]: Start difference. First operand has 456 places, 541 transitions, 6787 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:27:52,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 560 transitions, 8070 flow [2024-06-27 22:27:54,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 560 transitions, 7912 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 22:27:54,571 INFO L231 Difference]: Finished difference. Result has 463 places, 542 transitions, 6786 flow [2024-06-27 22:27:54,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6786, PETRI_PLACES=463, PETRI_TRANSITIONS=542} [2024-06-27 22:27:54,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-27 22:27:54,572 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 542 transitions, 6786 flow [2024-06-27 22:27:54,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:54,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:54,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:27:54,572 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:27:54,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -848431275, now seen corresponding path program 5 times [2024-06-27 22:27:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:54,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634654929] [2024-06-27 22:27:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:55,969 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 22:27:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634654929] [2024-06-27 22:27:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634654929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:27:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37797221] [2024-06-27 22:27:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:27:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:27:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:27:56,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:27:56,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 542 transitions, 6786 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:56,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:56,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:27:56,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:57,212 INFO L124 PetriNetUnfolderBase]: 1884/3703 cut-off events. [2024-06-27 22:27:57,213 INFO L125 PetriNetUnfolderBase]: For 301676/301692 co-relation queries the response was YES. [2024-06-27 22:27:57,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24313 conditions, 3703 events. 1884/3703 cut-off events. For 301676/301692 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 27464 event pairs, 401 based on Foata normal form. 2/3445 useless extension candidates. Maximal degree in co-relation 24093. Up to 2752 conditions per place. [2024-06-27 22:27:57,279 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 455 selfloop transitions, 99 changer transitions 0/568 dead transitions. [2024-06-27 22:27:57,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 568 transitions, 8112 flow [2024-06-27 22:27:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:27:57,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:27:57,280 INFO L175 Difference]: Start difference. First operand has 463 places, 542 transitions, 6786 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:27:57,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 568 transitions, 8112 flow [2024-06-27 22:28:00,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 568 transitions, 7982 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:00,061 INFO L231 Difference]: Finished difference. Result has 465 places, 544 transitions, 7015 flow [2024-06-27 22:28:00,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6656, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7015, PETRI_PLACES=465, PETRI_TRANSITIONS=544} [2024-06-27 22:28:00,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 22:28:00,062 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 544 transitions, 7015 flow [2024-06-27 22:28:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:00,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:00,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:28:00,062 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:00,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash 114469525, now seen corresponding path program 6 times [2024-06-27 22:28:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699742828] [2024-06-27 22:28:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699742828] [2024-06-27 22:28:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699742828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:01,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766035275] [2024-06-27 22:28:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:01,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:01,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:01,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 544 transitions, 7015 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:01,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:01,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:01,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:03,295 INFO L124 PetriNetUnfolderBase]: 1932/3835 cut-off events. [2024-06-27 22:28:03,295 INFO L125 PetriNetUnfolderBase]: For 349980/349993 co-relation queries the response was YES. [2024-06-27 22:28:03,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25974 conditions, 3835 events. 1932/3835 cut-off events. For 349980/349993 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 28860 event pairs, 565 based on Foata normal form. 5/3549 useless extension candidates. Maximal degree in co-relation 25753. Up to 2968 conditions per place. [2024-06-27 22:28:03,360 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 466 selfloop transitions, 93 changer transitions 0/573 dead transitions. [2024-06-27 22:28:03,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 573 transitions, 9011 flow [2024-06-27 22:28:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:28:03,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 22:28:03,361 INFO L175 Difference]: Start difference. First operand has 465 places, 544 transitions, 7015 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:28:03,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 573 transitions, 9011 flow [2024-06-27 22:28:06,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 573 transitions, 8695 flow, removed 109 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:06,706 INFO L231 Difference]: Finished difference. Result has 472 places, 548 transitions, 7060 flow [2024-06-27 22:28:06,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7060, PETRI_PLACES=472, PETRI_TRANSITIONS=548} [2024-06-27 22:28:06,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 22:28:06,707 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 548 transitions, 7060 flow [2024-06-27 22:28:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:06,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:06,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:28:06,707 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:06,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1426786569, now seen corresponding path program 7 times [2024-06-27 22:28:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712071335] [2024-06-27 22:28:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712071335] [2024-06-27 22:28:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712071335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:28:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095944711] [2024-06-27 22:28:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:08,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:28:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:28:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:28:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 548 transitions, 7060 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:10,330 INFO L124 PetriNetUnfolderBase]: 1949/3874 cut-off events. [2024-06-27 22:28:10,331 INFO L125 PetriNetUnfolderBase]: For 353822/353835 co-relation queries the response was YES. [2024-06-27 22:28:10,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26271 conditions, 3874 events. 1949/3874 cut-off events. For 353822/353835 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29190 event pairs, 602 based on Foata normal form. 5/3581 useless extension candidates. Maximal degree in co-relation 26047. Up to 3206 conditions per place. [2024-06-27 22:28:10,400 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 461 selfloop transitions, 90 changer transitions 0/565 dead transitions. [2024-06-27 22:28:10,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 565 transitions, 8351 flow [2024-06-27 22:28:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:28:10,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:28:10,401 INFO L175 Difference]: Start difference. First operand has 472 places, 548 transitions, 7060 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:28:10,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 565 transitions, 8351 flow [2024-06-27 22:28:13,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 565 transitions, 8165 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:13,793 INFO L231 Difference]: Finished difference. Result has 477 places, 549 transitions, 7077 flow [2024-06-27 22:28:13,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7077, PETRI_PLACES=477, PETRI_TRANSITIONS=549} [2024-06-27 22:28:13,793 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 22:28:13,793 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 549 transitions, 7077 flow [2024-06-27 22:28:13,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:13,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:13,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:13,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:28:13,794 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:13,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1427023719, now seen corresponding path program 8 times [2024-06-27 22:28:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:13,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634941899] [2024-06-27 22:28:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:13,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634941899] [2024-06-27 22:28:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634941899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:15,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:15,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:15,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428153680] [2024-06-27 22:28:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:15,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:15,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 549 transitions, 7077 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:15,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:15,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:17,325 INFO L124 PetriNetUnfolderBase]: 1946/3869 cut-off events. [2024-06-27 22:28:17,325 INFO L125 PetriNetUnfolderBase]: For 324607/324620 co-relation queries the response was YES. [2024-06-27 22:28:17,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25923 conditions, 3869 events. 1946/3869 cut-off events. For 324607/324620 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 29176 event pairs, 592 based on Foata normal form. 5/3578 useless extension candidates. Maximal degree in co-relation 25697. Up to 3119 conditions per place. [2024-06-27 22:28:17,385 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 464 selfloop transitions, 92 changer transitions 0/570 dead transitions. [2024-06-27 22:28:17,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 570 transitions, 8577 flow [2024-06-27 22:28:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:28:17,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:28:17,386 INFO L175 Difference]: Start difference. First operand has 477 places, 549 transitions, 7077 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:28:17,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 570 transitions, 8577 flow [2024-06-27 22:28:20,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 570 transitions, 8399 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:20,297 INFO L231 Difference]: Finished difference. Result has 480 places, 550 transitions, 7173 flow [2024-06-27 22:28:20,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6899, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7173, PETRI_PLACES=480, PETRI_TRANSITIONS=550} [2024-06-27 22:28:20,297 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 22:28:20,298 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 550 transitions, 7173 flow [2024-06-27 22:28:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:20,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:20,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:28:20,298 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash -56232905, now seen corresponding path program 9 times [2024-06-27 22:28:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213897154] [2024-06-27 22:28:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:21,983 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 22:28:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213897154] [2024-06-27 22:28:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213897154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:21,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:21,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:21,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293216048] [2024-06-27 22:28:21,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:21,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:22,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:22,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 550 transitions, 7173 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:22,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:22,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:22,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:23,547 INFO L124 PetriNetUnfolderBase]: 1999/4027 cut-off events. [2024-06-27 22:28:23,547 INFO L125 PetriNetUnfolderBase]: For 374491/374504 co-relation queries the response was YES. [2024-06-27 22:28:23,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27639 conditions, 4027 events. 1999/4027 cut-off events. For 374491/374504 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 30822 event pairs, 572 based on Foata normal form. 5/3727 useless extension candidates. Maximal degree in co-relation 27411. Up to 2615 conditions per place. [2024-06-27 22:28:23,622 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 473 selfloop transitions, 97 changer transitions 0/584 dead transitions. [2024-06-27 22:28:23,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 584 transitions, 9301 flow [2024-06-27 22:28:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:28:23,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:28:23,624 INFO L175 Difference]: Start difference. First operand has 480 places, 550 transitions, 7173 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:28:23,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 584 transitions, 9301 flow [2024-06-27 22:28:26,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 584 transitions, 9121 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:26,944 INFO L231 Difference]: Finished difference. Result has 486 places, 555 transitions, 7434 flow [2024-06-27 22:28:26,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7434, PETRI_PLACES=486, PETRI_TRANSITIONS=555} [2024-06-27 22:28:26,945 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 22:28:26,945 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 555 transitions, 7434 flow [2024-06-27 22:28:26,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:26,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:26,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:26,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:28:26,945 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:26,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2059935219, now seen corresponding path program 10 times [2024-06-27 22:28:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:26,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426101278] [2024-06-27 22:28:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:26,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426101278] [2024-06-27 22:28:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426101278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883843036] [2024-06-27 22:28:28,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:28,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:28,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:28,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 555 transitions, 7434 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:28,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:28,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:30,220 INFO L124 PetriNetUnfolderBase]: 2016/4067 cut-off events. [2024-06-27 22:28:30,220 INFO L125 PetriNetUnfolderBase]: For 383562/383575 co-relation queries the response was YES. [2024-06-27 22:28:30,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28282 conditions, 4067 events. 2016/4067 cut-off events. For 383562/383575 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31312 event pairs, 627 based on Foata normal form. 9/3760 useless extension candidates. Maximal degree in co-relation 28050. Up to 3332 conditions per place. [2024-06-27 22:28:30,291 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 453 selfloop transitions, 105 changer transitions 0/572 dead transitions. [2024-06-27 22:28:30,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 572 transitions, 8741 flow [2024-06-27 22:28:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:28:30,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:28:30,292 INFO L175 Difference]: Start difference. First operand has 486 places, 555 transitions, 7434 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:28:30,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 572 transitions, 8741 flow [2024-06-27 22:28:33,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 572 transitions, 8513 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:33,372 INFO L231 Difference]: Finished difference. Result has 492 places, 556 transitions, 7441 flow [2024-06-27 22:28:33,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7210, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7441, PETRI_PLACES=492, PETRI_TRANSITIONS=556} [2024-06-27 22:28:33,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 22:28:33,372 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 556 transitions, 7441 flow [2024-06-27 22:28:33,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:33,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:33,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:33,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:28:33,373 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:33,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1838053029, now seen corresponding path program 11 times [2024-06-27 22:28:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806124042] [2024-06-27 22:28:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806124042] [2024-06-27 22:28:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806124042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366543752] [2024-06-27 22:28:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:34,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:35,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:35,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 556 transitions, 7441 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:35,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:35,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:36,469 INFO L124 PetriNetUnfolderBase]: 2055/4165 cut-off events. [2024-06-27 22:28:36,470 INFO L125 PetriNetUnfolderBase]: For 423928/423941 co-relation queries the response was YES. [2024-06-27 22:28:36,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29392 conditions, 4165 events. 2055/4165 cut-off events. For 423928/423941 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32264 event pairs, 628 based on Foata normal form. 9/3853 useless extension candidates. Maximal degree in co-relation 29158. Up to 3318 conditions per place. [2024-06-27 22:28:36,551 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 469 selfloop transitions, 97 changer transitions 0/580 dead transitions. [2024-06-27 22:28:36,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 580 transitions, 9349 flow [2024-06-27 22:28:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:28:36,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:28:36,552 INFO L175 Difference]: Start difference. First operand has 492 places, 556 transitions, 7441 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:28:36,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 580 transitions, 9349 flow [2024-06-27 22:28:40,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 580 transitions, 9139 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:40,459 INFO L231 Difference]: Finished difference. Result has 494 places, 559 transitions, 7555 flow [2024-06-27 22:28:40,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7231, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7555, PETRI_PLACES=494, PETRI_TRANSITIONS=559} [2024-06-27 22:28:40,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 22:28:40,459 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 559 transitions, 7555 flow [2024-06-27 22:28:40,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:40,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:40,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:40,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:28:40,460 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:40,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 895425343, now seen corresponding path program 12 times [2024-06-27 22:28:40,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:40,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464169931] [2024-06-27 22:28:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464169931] [2024-06-27 22:28:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464169931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:41,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:41,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865365489] [2024-06-27 22:28:41,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:41,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:41,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:41,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:41,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:41,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:41,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 559 transitions, 7555 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:41,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:41,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:41,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:43,187 INFO L124 PetriNetUnfolderBase]: 2072/4204 cut-off events. [2024-06-27 22:28:43,187 INFO L125 PetriNetUnfolderBase]: For 432657/432670 co-relation queries the response was YES. [2024-06-27 22:28:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29843 conditions, 4204 events. 2072/4204 cut-off events. For 432657/432670 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 32692 event pairs, 646 based on Foata normal form. 9/3886 useless extension candidates. Maximal degree in co-relation 29607. Up to 3434 conditions per place. [2024-06-27 22:28:43,263 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 445 selfloop transitions, 117 changer transitions 0/576 dead transitions. [2024-06-27 22:28:43,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 576 transitions, 8870 flow [2024-06-27 22:28:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:28:43,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:28:43,264 INFO L175 Difference]: Start difference. First operand has 494 places, 559 transitions, 7555 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:28:43,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 576 transitions, 8870 flow [2024-06-27 22:28:47,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 576 transitions, 8728 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:47,032 INFO L231 Difference]: Finished difference. Result has 499 places, 560 transitions, 7672 flow [2024-06-27 22:28:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7413, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7672, PETRI_PLACES=499, PETRI_TRANSITIONS=560} [2024-06-27 22:28:47,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:28:47,033 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 560 transitions, 7672 flow [2024-06-27 22:28:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:47,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:47,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:28:47,034 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:47,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2059698069, now seen corresponding path program 13 times [2024-06-27 22:28:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:47,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120986451] [2024-06-27 22:28:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120986451] [2024-06-27 22:28:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120986451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:48,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:48,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:48,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979999315] [2024-06-27 22:28:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:48,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:48,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:48,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 560 transitions, 7672 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:48,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:48,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:48,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:49,845 INFO L124 PetriNetUnfolderBase]: 2093/4259 cut-off events. [2024-06-27 22:28:49,845 INFO L125 PetriNetUnfolderBase]: For 441591/441604 co-relation queries the response was YES. [2024-06-27 22:28:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30570 conditions, 4259 events. 2093/4259 cut-off events. For 441591/441604 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 33230 event pairs, 648 based on Foata normal form. 9/3939 useless extension candidates. Maximal degree in co-relation 30332. Up to 3371 conditions per place. [2024-06-27 22:28:49,925 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 460 selfloop transitions, 108 changer transitions 0/582 dead transitions. [2024-06-27 22:28:49,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 582 transitions, 9223 flow [2024-06-27 22:28:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:28:49,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:28:49,926 INFO L175 Difference]: Start difference. First operand has 499 places, 560 transitions, 7672 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:28:49,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 582 transitions, 9223 flow [2024-06-27 22:28:54,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 582 transitions, 8985 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:54,095 INFO L231 Difference]: Finished difference. Result has 502 places, 562 transitions, 7771 flow [2024-06-27 22:28:54,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7771, PETRI_PLACES=502, PETRI_TRANSITIONS=562} [2024-06-27 22:28:54,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:28:54,096 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 562 transitions, 7771 flow [2024-06-27 22:28:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:54,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:54,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:28:54,096 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:28:54,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -575017021, now seen corresponding path program 14 times [2024-06-27 22:28:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052294271] [2024-06-27 22:28:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052294271] [2024-06-27 22:28:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052294271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:55,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:28:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325788359] [2024-06-27 22:28:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:28:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:55,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:28:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:28:55,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:28:55,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 562 transitions, 7771 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:55,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:55,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:28:55,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:57,591 INFO L124 PetriNetUnfolderBase]: 2090/4254 cut-off events. [2024-06-27 22:28:57,592 INFO L125 PetriNetUnfolderBase]: For 415102/415115 co-relation queries the response was YES. [2024-06-27 22:28:57,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30295 conditions, 4254 events. 2090/4254 cut-off events. For 415102/415115 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33203 event pairs, 656 based on Foata normal form. 9/3933 useless extension candidates. Maximal degree in co-relation 30055. Up to 3468 conditions per place. [2024-06-27 22:28:57,673 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 468 selfloop transitions, 96 changer transitions 0/578 dead transitions. [2024-06-27 22:28:57,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 578 transitions, 9071 flow [2024-06-27 22:28:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:57,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:28:57,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:28:57,674 INFO L175 Difference]: Start difference. First operand has 502 places, 562 transitions, 7771 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:28:57,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 578 transitions, 9071 flow [2024-06-27 22:29:01,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 578 transitions, 8847 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:29:01,363 INFO L231 Difference]: Finished difference. Result has 504 places, 562 transitions, 7743 flow [2024-06-27 22:29:01,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7547, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7743, PETRI_PLACES=504, PETRI_TRANSITIONS=562} [2024-06-27 22:29:01,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-27 22:29:01,363 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 562 transitions, 7743 flow [2024-06-27 22:29:01,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:01,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:01,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:01,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:29:01,364 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:01,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash 283701605, now seen corresponding path program 15 times [2024-06-27 22:29:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:01,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762979516] [2024-06-27 22:29:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762979516] [2024-06-27 22:29:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762979516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136884945] [2024-06-27 22:29:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:03,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:03,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 562 transitions, 7743 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:03,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:03,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:04,515 INFO L124 PetriNetUnfolderBase]: 2087/4249 cut-off events. [2024-06-27 22:29:04,515 INFO L125 PetriNetUnfolderBase]: For 385008/385021 co-relation queries the response was YES. [2024-06-27 22:29:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29819 conditions, 4249 events. 2087/4249 cut-off events. For 385008/385021 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 33121 event pairs, 627 based on Foata normal form. 9/3933 useless extension candidates. Maximal degree in co-relation 29578. Up to 3120 conditions per place. [2024-06-27 22:29:04,594 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 470 selfloop transitions, 103 changer transitions 0/587 dead transitions. [2024-06-27 22:29:04,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 587 transitions, 9343 flow [2024-06-27 22:29:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:04,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:29:04,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 22:29:04,595 INFO L175 Difference]: Start difference. First operand has 504 places, 562 transitions, 7743 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:29:04,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 587 transitions, 9343 flow [2024-06-27 22:29:08,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 587 transitions, 9143 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:29:08,610 INFO L231 Difference]: Finished difference. Result has 509 places, 564 transitions, 7917 flow [2024-06-27 22:29:08,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7543, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7917, PETRI_PLACES=509, PETRI_TRANSITIONS=564} [2024-06-27 22:29:08,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 22:29:08,610 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 564 transitions, 7917 flow [2024-06-27 22:29:08,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:08,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:08,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:08,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:29:08,611 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:08,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 600429369, now seen corresponding path program 1 times [2024-06-27 22:29:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:08,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452611020] [2024-06-27 22:29:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:10,531 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 22:29:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452611020] [2024-06-27 22:29:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452611020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:10,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:10,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:29:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340249015] [2024-06-27 22:29:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:29:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:29:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:29:10,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 564 transitions, 7917 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:10,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:10,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:10,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:12,133 INFO L124 PetriNetUnfolderBase]: 2133/4389 cut-off events. [2024-06-27 22:29:12,133 INFO L125 PetriNetUnfolderBase]: For 503950/503966 co-relation queries the response was YES. [2024-06-27 22:29:12,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31005 conditions, 4389 events. 2133/4389 cut-off events. For 503950/503966 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 34612 event pairs, 704 based on Foata normal form. 14/4061 useless extension candidates. Maximal degree in co-relation 30761. Up to 3555 conditions per place. [2024-06-27 22:29:12,216 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 505 selfloop transitions, 67 changer transitions 0/586 dead transitions. [2024-06-27 22:29:12,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 586 transitions, 9267 flow [2024-06-27 22:29:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 22:29:12,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:29:12,217 INFO L175 Difference]: Start difference. First operand has 509 places, 564 transitions, 7917 flow. Second operand 12 states and 196 transitions. [2024-06-27 22:29:12,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 586 transitions, 9267 flow [2024-06-27 22:29:16,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 586 transitions, 8893 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:16,594 INFO L231 Difference]: Finished difference. Result has 512 places, 564 transitions, 7681 flow [2024-06-27 22:29:16,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7543, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7681, PETRI_PLACES=512, PETRI_TRANSITIONS=564} [2024-06-27 22:29:16,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-27 22:29:16,594 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 564 transitions, 7681 flow [2024-06-27 22:29:16,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:16,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:16,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:29:16,595 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:16,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash 665745661, now seen corresponding path program 2 times [2024-06-27 22:29:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:16,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736595881] [2024-06-27 22:29:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736595881] [2024-06-27 22:29:18,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736595881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:18,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:18,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 22:29:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349815696] [2024-06-27 22:29:18,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:18,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 22:29:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:18,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 22:29:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 22:29:18,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:18,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 564 transitions, 7681 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:18,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:18,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:18,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:20,460 INFO L124 PetriNetUnfolderBase]: 2183/4525 cut-off events. [2024-06-27 22:29:20,461 INFO L125 PetriNetUnfolderBase]: For 520171/520190 co-relation queries the response was YES. [2024-06-27 22:29:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31232 conditions, 4525 events. 2183/4525 cut-off events. For 520171/520190 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 36134 event pairs, 719 based on Foata normal form. 15/4187 useless extension candidates. Maximal degree in co-relation 30989. Up to 3571 conditions per place. [2024-06-27 22:29:20,545 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 473 selfloop transitions, 97 changer transitions 0/584 dead transitions. [2024-06-27 22:29:20,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 584 transitions, 9021 flow [2024-06-27 22:29:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 22:29:20,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:29:20,546 INFO L175 Difference]: Start difference. First operand has 512 places, 564 transitions, 7681 flow. Second operand 12 states and 200 transitions. [2024-06-27 22:29:20,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 584 transitions, 9021 flow [2024-06-27 22:29:25,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 584 transitions, 8889 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:25,130 INFO L231 Difference]: Finished difference. Result has 514 places, 564 transitions, 7747 flow [2024-06-27 22:29:25,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7747, PETRI_PLACES=514, PETRI_TRANSITIONS=564} [2024-06-27 22:29:25,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-27 22:29:25,131 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 564 transitions, 7747 flow [2024-06-27 22:29:25,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:25,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:25,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 22:29:25,131 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:25,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash 121144693, now seen corresponding path program 3 times [2024-06-27 22:29:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:25,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818361643] [2024-06-27 22:29:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818361643] [2024-06-27 22:29:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818361643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 22:29:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361303344] [2024-06-27 22:29:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:27,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 22:29:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 22:29:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 22:29:27,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:27,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 564 transitions, 7747 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:27,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:27,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:29,387 INFO L124 PetriNetUnfolderBase]: 2231/4663 cut-off events. [2024-06-27 22:29:29,387 INFO L125 PetriNetUnfolderBase]: For 540787/540809 co-relation queries the response was YES. [2024-06-27 22:29:29,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32270 conditions, 4663 events. 2231/4663 cut-off events. For 540787/540809 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37714 event pairs, 751 based on Foata normal form. 11/4311 useless extension candidates. Maximal degree in co-relation 32026. Up to 3673 conditions per place. [2024-06-27 22:29:29,473 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 479 selfloop transitions, 91 changer transitions 0/584 dead transitions. [2024-06-27 22:29:29,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 584 transitions, 9087 flow [2024-06-27 22:29:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:29:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:29:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 22:29:29,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 22:29:29,474 INFO L175 Difference]: Start difference. First operand has 514 places, 564 transitions, 7747 flow. Second operand 12 states and 201 transitions. [2024-06-27 22:29:29,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 584 transitions, 9087 flow [2024-06-27 22:29:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 584 transitions, 8895 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:33,955 INFO L231 Difference]: Finished difference. Result has 516 places, 564 transitions, 7741 flow [2024-06-27 22:29:33,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7741, PETRI_PLACES=516, PETRI_TRANSITIONS=564} [2024-06-27 22:29:33,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-27 22:29:33,956 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 564 transitions, 7741 flow [2024-06-27 22:29:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:33,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:33,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 22:29:33,956 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:33,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 895722571, now seen corresponding path program 4 times [2024-06-27 22:29:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406454871] [2024-06-27 22:29:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:35,853 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 22:29:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406454871] [2024-06-27 22:29:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406454871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:29:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878488904] [2024-06-27 22:29:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:29:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:29:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:29:36,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:36,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 564 transitions, 7741 flow. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:36,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:36,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:36,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:37,848 INFO L124 PetriNetUnfolderBase]: 2279/4801 cut-off events. [2024-06-27 22:29:37,848 INFO L125 PetriNetUnfolderBase]: For 561865/561890 co-relation queries the response was YES. [2024-06-27 22:29:37,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33212 conditions, 4801 events. 2279/4801 cut-off events. For 561865/561890 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 39212 event pairs, 783 based on Foata normal form. 15/4441 useless extension candidates. Maximal degree in co-relation 32967. Up to 3728 conditions per place. [2024-06-27 22:29:37,938 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 440 selfloop transitions, 131 changer transitions 0/585 dead transitions. [2024-06-27 22:29:37,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 585 transitions, 9085 flow [2024-06-27 22:29:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:29:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:29:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-27 22:29:37,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-27 22:29:37,939 INFO L175 Difference]: Start difference. First operand has 516 places, 564 transitions, 7741 flow. Second operand 13 states and 214 transitions. [2024-06-27 22:29:37,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 585 transitions, 9085 flow [2024-06-27 22:29:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 585 transitions, 8905 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:42,635 INFO L231 Difference]: Finished difference. Result has 519 places, 564 transitions, 7829 flow [2024-06-27 22:29:42,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7561, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7829, PETRI_PLACES=519, PETRI_TRANSITIONS=564} [2024-06-27 22:29:42,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:29:42,635 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 564 transitions, 7829 flow [2024-06-27 22:29:42,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:42,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:42,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 22:29:42,636 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 887390701, now seen corresponding path program 5 times [2024-06-27 22:29:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:42,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735658434] [2024-06-27 22:29:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:42,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735658434] [2024-06-27 22:29:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735658434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 22:29:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293006967] [2024-06-27 22:29:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:44,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 22:29:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 22:29:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 22:29:44,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:29:44,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 564 transitions, 7829 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:44,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:44,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:29:44,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:46,888 INFO L124 PetriNetUnfolderBase]: 2326/4947 cut-off events. [2024-06-27 22:29:46,888 INFO L125 PetriNetUnfolderBase]: For 582829/582857 co-relation queries the response was YES. [2024-06-27 22:29:46,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34297 conditions, 4947 events. 2326/4947 cut-off events. For 582829/582857 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 41040 event pairs, 825 based on Foata normal form. 15/4577 useless extension candidates. Maximal degree in co-relation 34051. Up to 3873 conditions per place. [2024-06-27 22:29:46,973 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 463 selfloop transitions, 108 changer transitions 0/585 dead transitions. [2024-06-27 22:29:46,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 585 transitions, 9173 flow [2024-06-27 22:29:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:29:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:29:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-27 22:29:46,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2024-06-27 22:29:46,975 INFO L175 Difference]: Start difference. First operand has 519 places, 564 transitions, 7829 flow. Second operand 13 states and 213 transitions. [2024-06-27 22:29:46,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 585 transitions, 9173 flow [2024-06-27 22:29:51,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 585 transitions, 8907 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 22:29:51,705 INFO L231 Difference]: Finished difference. Result has 519 places, 564 transitions, 7783 flow [2024-06-27 22:29:51,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7563, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7783, PETRI_PLACES=519, PETRI_TRANSITIONS=564} [2024-06-27 22:29:51,706 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:29:51,706 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 564 transitions, 7783 flow [2024-06-27 22:29:51,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:51,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:51,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 22:29:51,707 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:29:51,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash -607170051, now seen corresponding path program 6 times [2024-06-27 22:29:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449823190] [2024-06-27 22:29:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:53,228 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 22:29:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449823190] [2024-06-27 22:29:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449823190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:29:53,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035874239] [2024-06-27 22:29:53,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:29:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:29:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:29:53,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:29:53,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 564 transitions, 7783 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:53,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:53,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:29:53,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:55,023 INFO L124 PetriNetUnfolderBase]: 2414/5196 cut-off events. [2024-06-27 22:29:55,023 INFO L125 PetriNetUnfolderBase]: For 712568/712599 co-relation queries the response was YES. [2024-06-27 22:29:55,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37317 conditions, 5196 events. 2414/5196 cut-off events. For 712568/712599 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 43748 event pairs, 867 based on Foata normal form. 13/4807 useless extension candidates. Maximal degree in co-relation 37071. Up to 3355 conditions per place. [2024-06-27 22:29:55,120 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 448 selfloop transitions, 128 changer transitions 0/591 dead transitions. [2024-06-27 22:29:55,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 591 transitions, 9667 flow [2024-06-27 22:29:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 22:29:55,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 22:29:55,122 INFO L175 Difference]: Start difference. First operand has 519 places, 564 transitions, 7783 flow. Second operand 11 states and 204 transitions. [2024-06-27 22:29:55,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 591 transitions, 9667 flow [2024-06-27 22:30:01,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 591 transitions, 9453 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:30:01,309 INFO L231 Difference]: Finished difference. Result has 519 places, 564 transitions, 7828 flow [2024-06-27 22:30:01,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7569, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7828, PETRI_PLACES=519, PETRI_TRANSITIONS=564} [2024-06-27 22:30:01,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:30:01,310 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 564 transitions, 7828 flow [2024-06-27 22:30:01,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:01,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:01,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 22:30:01,310 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:01,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash -607468581, now seen corresponding path program 7 times [2024-06-27 22:30:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151622581] [2024-06-27 22:30:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151622581] [2024-06-27 22:30:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151622581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 22:30:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611115540] [2024-06-27 22:30:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 22:30:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 22:30:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 22:30:03,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:30:03,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 564 transitions, 7828 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:03,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:03,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:30:03,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:05,043 INFO L124 PetriNetUnfolderBase]: 2404/5180 cut-off events. [2024-06-27 22:30:05,043 INFO L125 PetriNetUnfolderBase]: For 617196/617227 co-relation queries the response was YES. [2024-06-27 22:30:05,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35897 conditions, 5180 events. 2404/5180 cut-off events. For 617196/617227 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 43781 event pairs, 886 based on Foata normal form. 15/4791 useless extension candidates. Maximal degree in co-relation 35650. Up to 4049 conditions per place. [2024-06-27 22:30:05,142 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 452 selfloop transitions, 118 changer transitions 0/584 dead transitions. [2024-06-27 22:30:05,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 584 transitions, 9168 flow [2024-06-27 22:30:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 22:30:05,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:30:05,143 INFO L175 Difference]: Start difference. First operand has 519 places, 564 transitions, 7828 flow. Second operand 12 states and 198 transitions. [2024-06-27 22:30:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 584 transitions, 9168 flow [2024-06-27 22:30:10,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 584 transitions, 8913 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:10,733 INFO L231 Difference]: Finished difference. Result has 522 places, 564 transitions, 7813 flow [2024-06-27 22:30:10,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7573, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7813, PETRI_PLACES=522, PETRI_TRANSITIONS=564} [2024-06-27 22:30:10,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 481 predicate places. [2024-06-27 22:30:10,734 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 564 transitions, 7813 flow [2024-06-27 22:30:10,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:10,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:10,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:10,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 22:30:10,734 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:10,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1195530803, now seen corresponding path program 16 times [2024-06-27 22:30:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:10,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280105035] [2024-06-27 22:30:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:10,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280105035] [2024-06-27 22:30:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280105035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:12,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:30:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533886624] [2024-06-27 22:30:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:12,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:30:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:30:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:30:12,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:30:12,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 564 transitions, 7813 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:12,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:12,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:30:12,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:14,140 INFO L124 PetriNetUnfolderBase]: 2418/5215 cut-off events. [2024-06-27 22:30:14,141 INFO L125 PetriNetUnfolderBase]: For 522544/522575 co-relation queries the response was YES. [2024-06-27 22:30:14,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36140 conditions, 5215 events. 2418/5215 cut-off events. For 522544/522575 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 44201 event pairs, 900 based on Foata normal form. 10/4815 useless extension candidates. Maximal degree in co-relation 35892. Up to 4184 conditions per place. [2024-06-27 22:30:14,236 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 464 selfloop transitions, 101 changer transitions 0/579 dead transitions. [2024-06-27 22:30:14,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 579 transitions, 9125 flow [2024-06-27 22:30:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:30:14,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:30:14,237 INFO L175 Difference]: Start difference. First operand has 522 places, 564 transitions, 7813 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:30:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 579 transitions, 9125 flow [2024-06-27 22:30:20,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 579 transitions, 8891 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:30:20,106 INFO L231 Difference]: Finished difference. Result has 523 places, 565 transitions, 7803 flow [2024-06-27 22:30:20,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7803, PETRI_PLACES=523, PETRI_TRANSITIONS=565} [2024-06-27 22:30:20,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-27 22:30:20,107 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 565 transitions, 7803 flow [2024-06-27 22:30:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:20,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:20,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 22:30:20,107 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:20,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1337680171, now seen corresponding path program 17 times [2024-06-27 22:30:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:20,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352798822] [2024-06-27 22:30:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352798822] [2024-06-27 22:30:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352798822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:21,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164367341] [2024-06-27 22:30:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:21,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:30:21,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 565 transitions, 7803 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:21,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:21,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:30:21,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:23,527 INFO L124 PetriNetUnfolderBase]: 2453/5306 cut-off events. [2024-06-27 22:30:23,527 INFO L125 PetriNetUnfolderBase]: For 573033/573064 co-relation queries the response was YES. [2024-06-27 22:30:23,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37310 conditions, 5306 events. 2453/5306 cut-off events. For 573033/573064 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 45213 event pairs, 901 based on Foata normal form. 9/4900 useless extension candidates. Maximal degree in co-relation 37061. Up to 4071 conditions per place. [2024-06-27 22:30:23,627 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 424 selfloop transitions, 149 changer transitions 0/587 dead transitions. [2024-06-27 22:30:23,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 587 transitions, 9751 flow [2024-06-27 22:30:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:30:23,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 22:30:23,628 INFO L175 Difference]: Start difference. First operand has 523 places, 565 transitions, 7803 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:30:23,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 587 transitions, 9751 flow [2024-06-27 22:30:28,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 587 transitions, 9545 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:28,997 INFO L231 Difference]: Finished difference. Result has 526 places, 568 transitions, 8030 flow [2024-06-27 22:30:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7597, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8030, PETRI_PLACES=526, PETRI_TRANSITIONS=568} [2024-06-27 22:30:28,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 22:30:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 568 transitions, 8030 flow [2024-06-27 22:30:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:28,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:28,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 22:30:28,998 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:28,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1870817637, now seen corresponding path program 18 times [2024-06-27 22:30:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327521386] [2024-06-27 22:30:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:30,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327521386] [2024-06-27 22:30:30,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327521386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:30,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:30,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680777746] [2024-06-27 22:30:30,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:30,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:30:30,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 568 transitions, 8030 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:30,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:30,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:30:30,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:32,618 INFO L124 PetriNetUnfolderBase]: 2467/5340 cut-off events. [2024-06-27 22:30:32,619 INFO L125 PetriNetUnfolderBase]: For 581955/581986 co-relation queries the response was YES. [2024-06-27 22:30:32,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37838 conditions, 5340 events. 2467/5340 cut-off events. For 581955/581986 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 45528 event pairs, 917 based on Foata normal form. 9/4930 useless extension candidates. Maximal degree in co-relation 37587. Up to 4163 conditions per place. [2024-06-27 22:30:32,714 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 439 selfloop transitions, 130 changer transitions 0/583 dead transitions. [2024-06-27 22:30:32,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 583 transitions, 9354 flow [2024-06-27 22:30:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:30:32,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:30:32,715 INFO L175 Difference]: Start difference. First operand has 526 places, 568 transitions, 8030 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:30:32,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 583 transitions, 9354 flow [2024-06-27 22:30:39,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 583 transitions, 9030 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:39,351 INFO L231 Difference]: Finished difference. Result has 529 places, 569 transitions, 7992 flow [2024-06-27 22:30:39,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7708, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7992, PETRI_PLACES=529, PETRI_TRANSITIONS=569} [2024-06-27 22:30:39,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-27 22:30:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 569 transitions, 7992 flow [2024-06-27 22:30:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:39,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:39,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 22:30:39,352 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:39,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1870580487, now seen corresponding path program 19 times [2024-06-27 22:30:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533488240] [2024-06-27 22:30:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:41,220 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 22:30:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533488240] [2024-06-27 22:30:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533488240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113793990] [2024-06-27 22:30:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:41,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:30:41,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 569 transitions, 7992 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:41,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:41,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:30:41,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:43,170 INFO L124 PetriNetUnfolderBase]: 2485/5397 cut-off events. [2024-06-27 22:30:43,170 INFO L125 PetriNetUnfolderBase]: For 589044/589075 co-relation queries the response was YES. [2024-06-27 22:30:43,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38213 conditions, 5397 events. 2485/5397 cut-off events. For 589044/589075 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 46260 event pairs, 928 based on Foata normal form. 9/4984 useless extension candidates. Maximal degree in co-relation 37961. Up to 4154 conditions per place. [2024-06-27 22:30:43,273 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 443 selfloop transitions, 132 changer transitions 0/589 dead transitions. [2024-06-27 22:30:43,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 589 transitions, 9556 flow [2024-06-27 22:30:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:30:43,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:30:43,274 INFO L175 Difference]: Start difference. First operand has 529 places, 569 transitions, 7992 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:30:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 589 transitions, 9556 flow [2024-06-27 22:30:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 589 transitions, 9290 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:49,236 INFO L231 Difference]: Finished difference. Result has 532 places, 571 transitions, 8108 flow [2024-06-27 22:30:49,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7726, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8108, PETRI_PLACES=532, PETRI_TRANSITIONS=571} [2024-06-27 22:30:49,237 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 491 predicate places. [2024-06-27 22:30:49,237 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 571 transitions, 8108 flow [2024-06-27 22:30:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:49,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:49,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:49,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 22:30:49,237 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:49,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1956651385, now seen corresponding path program 20 times [2024-06-27 22:30:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:49,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081769321] [2024-06-27 22:30:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:50,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081769321] [2024-06-27 22:30:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081769321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:50,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:50,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934147794] [2024-06-27 22:30:50,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:50,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:30:50,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 571 transitions, 8108 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:50,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:50,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:30:50,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:52,984 INFO L124 PetriNetUnfolderBase]: 2955/6127 cut-off events. [2024-06-27 22:30:52,984 INFO L125 PetriNetUnfolderBase]: For 602836/602836 co-relation queries the response was YES. [2024-06-27 22:30:53,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42361 conditions, 6127 events. 2955/6127 cut-off events. For 602836/602836 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 50996 event pairs, 1124 based on Foata normal form. 2/5779 useless extension candidates. Maximal degree in co-relation 42107. Up to 5195 conditions per place. [2024-06-27 22:30:53,106 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 564 selfloop transitions, 20 changer transitions 0/593 dead transitions. [2024-06-27 22:30:53,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 593 transitions, 9503 flow [2024-06-27 22:30:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:30:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:30:53,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 22:30:53,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-27 22:30:53,107 INFO L175 Difference]: Start difference. First operand has 532 places, 571 transitions, 8108 flow. Second operand 12 states and 182 transitions. [2024-06-27 22:30:53,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 593 transitions, 9503 flow [2024-06-27 22:30:59,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 593 transitions, 9217 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:59,971 INFO L231 Difference]: Finished difference. Result has 536 places, 573 transitions, 8020 flow [2024-06-27 22:30:59,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7822, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8020, PETRI_PLACES=536, PETRI_TRANSITIONS=573} [2024-06-27 22:30:59,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 22:30:59,972 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 573 transitions, 8020 flow [2024-06-27 22:30:59,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:59,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:59,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 22:30:59,972 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:30:59,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1210706661, now seen corresponding path program 21 times [2024-06-27 22:30:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038830524] [2024-06-27 22:30:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:59,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038830524] [2024-06-27 22:31:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038830524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:01,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923589864] [2024-06-27 22:31:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:01,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:01,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 573 transitions, 8020 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:01,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:01,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:01,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:03,958 INFO L124 PetriNetUnfolderBase]: 2530/5500 cut-off events. [2024-06-27 22:31:03,958 INFO L125 PetriNetUnfolderBase]: For 657558/657589 co-relation queries the response was YES. [2024-06-27 22:31:04,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39497 conditions, 5500 events. 2530/5500 cut-off events. For 657558/657589 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47347 event pairs, 929 based on Foata normal form. 4/5071 useless extension candidates. Maximal degree in co-relation 39242. Up to 4234 conditions per place. [2024-06-27 22:31:04,060 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 464 selfloop transitions, 117 changer transitions 0/595 dead transitions. [2024-06-27 22:31:04,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 595 transitions, 10008 flow [2024-06-27 22:31:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:31:04,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 22:31:04,061 INFO L175 Difference]: Start difference. First operand has 536 places, 573 transitions, 8020 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:31:04,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 595 transitions, 10008 flow [2024-06-27 22:31:11,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 595 transitions, 9829 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-27 22:31:11,637 INFO L231 Difference]: Finished difference. Result has 538 places, 576 transitions, 8219 flow [2024-06-27 22:31:11,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7841, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8219, PETRI_PLACES=538, PETRI_TRANSITIONS=576} [2024-06-27 22:31:11,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 22:31:11,637 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 576 transitions, 8219 flow [2024-06-27 22:31:11,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:11,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:11,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 22:31:11,638 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:11,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1203574373, now seen corresponding path program 22 times [2024-06-27 22:31:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840346743] [2024-06-27 22:31:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:12,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:12,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840346743] [2024-06-27 22:31:12,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840346743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:12,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:12,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560362402] [2024-06-27 22:31:12,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:13,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:13,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 576 transitions, 8219 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:13,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:13,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:13,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:14,744 INFO L124 PetriNetUnfolderBase]: 2531/5511 cut-off events. [2024-06-27 22:31:14,744 INFO L125 PetriNetUnfolderBase]: For 622293/622324 co-relation queries the response was YES. [2024-06-27 22:31:14,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39343 conditions, 5511 events. 2531/5511 cut-off events. For 622293/622324 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47499 event pairs, 938 based on Foata normal form. 9/5084 useless extension candidates. Maximal degree in co-relation 39086. Up to 4283 conditions per place. [2024-06-27 22:31:14,852 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 432 selfloop transitions, 145 changer transitions 0/591 dead transitions. [2024-06-27 22:31:14,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 591 transitions, 9558 flow [2024-06-27 22:31:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:31:14,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:31:14,856 INFO L175 Difference]: Start difference. First operand has 538 places, 576 transitions, 8219 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:31:14,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 591 transitions, 9558 flow [2024-06-27 22:31:21,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 591 transitions, 9384 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:31:21,090 INFO L231 Difference]: Finished difference. Result has 542 places, 577 transitions, 8358 flow [2024-06-27 22:31:21,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8045, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8358, PETRI_PLACES=542, PETRI_TRANSITIONS=577} [2024-06-27 22:31:21,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 22:31:21,090 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 577 transitions, 8358 flow [2024-06-27 22:31:21,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:21,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:21,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:21,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 22:31:21,090 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:21,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:21,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2092462677, now seen corresponding path program 23 times [2024-06-27 22:31:21,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:21,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220898012] [2024-06-27 22:31:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220898012] [2024-06-27 22:31:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220898012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:22,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:22,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:31:22,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451412377] [2024-06-27 22:31:22,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:22,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:31:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:22,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:31:22,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:31:22,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:22,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 577 transitions, 8358 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:22,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:22,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:22,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:24,541 INFO L124 PetriNetUnfolderBase]: 2545/5545 cut-off events. [2024-06-27 22:31:24,542 INFO L125 PetriNetUnfolderBase]: For 627490/627521 co-relation queries the response was YES. [2024-06-27 22:31:24,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39866 conditions, 5545 events. 2545/5545 cut-off events. For 627490/627521 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 47911 event pairs, 946 based on Foata normal form. 10/5117 useless extension candidates. Maximal degree in co-relation 39607. Up to 4424 conditions per place. [2024-06-27 22:31:24,648 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 489 selfloop transitions, 89 changer transitions 0/592 dead transitions. [2024-06-27 22:31:24,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 592 transitions, 9706 flow [2024-06-27 22:31:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:31:24,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:31:24,653 INFO L175 Difference]: Start difference. First operand has 542 places, 577 transitions, 8358 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:31:24,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 592 transitions, 9706 flow [2024-06-27 22:31:31,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 592 transitions, 9416 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:31,770 INFO L231 Difference]: Finished difference. Result has 544 places, 578 transitions, 8276 flow [2024-06-27 22:31:31,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8068, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8276, PETRI_PLACES=544, PETRI_TRANSITIONS=578} [2024-06-27 22:31:31,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-27 22:31:31,771 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 578 transitions, 8276 flow [2024-06-27 22:31:31,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:31,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:31,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:31,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 22:31:31,771 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:31,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -705690479, now seen corresponding path program 24 times [2024-06-27 22:31:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791449195] [2024-06-27 22:31:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791449195] [2024-06-27 22:31:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791449195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514105815] [2024-06-27 22:31:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:33,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:33,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 578 transitions, 8276 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:33,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:33,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:33,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:35,351 INFO L124 PetriNetUnfolderBase]: 2588/5666 cut-off events. [2024-06-27 22:31:35,351 INFO L125 PetriNetUnfolderBase]: For 686116/686147 co-relation queries the response was YES. [2024-06-27 22:31:35,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41362 conditions, 5666 events. 2588/5666 cut-off events. For 686116/686147 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 49301 event pairs, 953 based on Foata normal form. 9/5226 useless extension candidates. Maximal degree in co-relation 41102. Up to 4118 conditions per place. [2024-06-27 22:31:35,462 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 450 selfloop transitions, 141 changer transitions 0/605 dead transitions. [2024-06-27 22:31:35,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 605 transitions, 10448 flow [2024-06-27 22:31:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:31:35,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 22:31:35,463 INFO L175 Difference]: Start difference. First operand has 544 places, 578 transitions, 8276 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:31:35,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 605 transitions, 10448 flow [2024-06-27 22:31:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 605 transitions, 10258 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:43,322 INFO L231 Difference]: Finished difference. Result has 548 places, 582 transitions, 8594 flow [2024-06-27 22:31:43,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8086, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8594, PETRI_PLACES=548, PETRI_TRANSITIONS=582} [2024-06-27 22:31:43,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 507 predicate places. [2024-06-27 22:31:43,323 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 582 transitions, 8594 flow [2024-06-27 22:31:43,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:43,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:43,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:43,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 22:31:43,323 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:43,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -841424333, now seen corresponding path program 25 times [2024-06-27 22:31:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064020839] [2024-06-27 22:31:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:45,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064020839] [2024-06-27 22:31:45,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064020839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:45,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:45,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625493553] [2024-06-27 22:31:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:45,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:45,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:45,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:45,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 582 transitions, 8594 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:45,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:45,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:47,588 INFO L124 PetriNetUnfolderBase]: 2623/5756 cut-off events. [2024-06-27 22:31:47,589 INFO L125 PetriNetUnfolderBase]: For 744060/744091 co-relation queries the response was YES. [2024-06-27 22:31:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43048 conditions, 5756 events. 2623/5756 cut-off events. For 744060/744091 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 50221 event pairs, 975 based on Foata normal form. 4/5304 useless extension candidates. Maximal degree in co-relation 42785. Up to 4409 conditions per place. [2024-06-27 22:31:47,694 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 467 selfloop transitions, 123 changer transitions 0/604 dead transitions. [2024-06-27 22:31:47,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 604 transitions, 10624 flow [2024-06-27 22:31:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:31:47,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 22:31:47,695 INFO L175 Difference]: Start difference. First operand has 548 places, 582 transitions, 8594 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:31:47,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 604 transitions, 10624 flow [2024-06-27 22:31:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 604 transitions, 10340 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 22:31:55,553 INFO L231 Difference]: Finished difference. Result has 554 places, 585 transitions, 8716 flow [2024-06-27 22:31:55,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8716, PETRI_PLACES=554, PETRI_TRANSITIONS=585} [2024-06-27 22:31:55,553 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 513 predicate places. [2024-06-27 22:31:55,554 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 585 transitions, 8716 flow [2024-06-27 22:31:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:55,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:55,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:55,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 22:31:55,554 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:55,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2092225527, now seen corresponding path program 26 times [2024-06-27 22:31:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:55,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866799244] [2024-06-27 22:31:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:57,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:57,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866799244] [2024-06-27 22:31:57,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866799244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:57,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:57,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:57,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287172115] [2024-06-27 22:31:57,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:57,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:57,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:31:57,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 585 transitions, 8716 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:57,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:57,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:31:57,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:59,179 INFO L124 PetriNetUnfolderBase]: 2637/5792 cut-off events. [2024-06-27 22:31:59,179 INFO L125 PetriNetUnfolderBase]: For 748696/748727 co-relation queries the response was YES. [2024-06-27 22:31:59,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43384 conditions, 5792 events. 2637/5792 cut-off events. For 748696/748727 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 50659 event pairs, 973 based on Foata normal form. 9/5342 useless extension candidates. Maximal degree in co-relation 43118. Up to 4418 conditions per place. [2024-06-27 22:31:59,305 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 462 selfloop transitions, 130 changer transitions 0/606 dead transitions. [2024-06-27 22:31:59,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 606 transitions, 10721 flow [2024-06-27 22:31:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:31:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:31:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:31:59,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 22:31:59,306 INFO L175 Difference]: Start difference. First operand has 554 places, 585 transitions, 8716 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:31:59,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 606 transitions, 10721 flow [2024-06-27 22:32:06,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 606 transitions, 10525 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:06,609 INFO L231 Difference]: Finished difference. Result has 559 places, 587 transitions, 8909 flow [2024-06-27 22:32:06,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8520, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8909, PETRI_PLACES=559, PETRI_TRANSITIONS=587} [2024-06-27 22:32:06,609 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 518 predicate places. [2024-06-27 22:32:06,609 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 587 transitions, 8909 flow [2024-06-27 22:32:06,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:06,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:06,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:06,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 22:32:06,610 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:06,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1440632421, now seen corresponding path program 27 times [2024-06-27 22:32:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:06,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030389834] [2024-06-27 22:32:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:07,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:07,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030389834] [2024-06-27 22:32:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030389834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:07,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:32:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324878549] [2024-06-27 22:32:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:32:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:32:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:32:08,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:08,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 587 transitions, 8909 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:08,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:08,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:08,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:10,205 INFO L124 PetriNetUnfolderBase]: 2651/5826 cut-off events. [2024-06-27 22:32:10,205 INFO L125 PetriNetUnfolderBase]: For 755543/755574 co-relation queries the response was YES. [2024-06-27 22:32:10,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43926 conditions, 5826 events. 2651/5826 cut-off events. For 755543/755574 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51075 event pairs, 989 based on Foata normal form. 4/5368 useless extension candidates. Maximal degree in co-relation 43657. Up to 4507 conditions per place. [2024-06-27 22:32:10,312 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 470 selfloop transitions, 118 changer transitions 0/602 dead transitions. [2024-06-27 22:32:10,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 602 transitions, 10281 flow [2024-06-27 22:32:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:32:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:32:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:32:10,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 22:32:10,313 INFO L175 Difference]: Start difference. First operand has 559 places, 587 transitions, 8909 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:32:10,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 602 transitions, 10281 flow [2024-06-27 22:32:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 602 transitions, 9898 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:32:18,567 INFO L231 Difference]: Finished difference. Result has 561 places, 588 transitions, 8796 flow [2024-06-27 22:32:18,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8526, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8796, PETRI_PLACES=561, PETRI_TRANSITIONS=588} [2024-06-27 22:32:18,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 520 predicate places. [2024-06-27 22:32:18,567 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 588 transitions, 8796 flow [2024-06-27 22:32:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 22:32:18,568 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:18,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2100506247, now seen corresponding path program 28 times [2024-06-27 22:32:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895764236] [2024-06-27 22:32:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:18,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:19,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:19,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895764236] [2024-06-27 22:32:19,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895764236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:19,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:19,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:32:19,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123948835] [2024-06-27 22:32:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:19,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:32:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:32:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:32:19,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:19,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 588 transitions, 8796 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:19,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:19,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:21,856 INFO L124 PetriNetUnfolderBase]: 2648/5821 cut-off events. [2024-06-27 22:32:21,856 INFO L125 PetriNetUnfolderBase]: For 718258/718289 co-relation queries the response was YES. [2024-06-27 22:32:21,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43094 conditions, 5821 events. 2648/5821 cut-off events. For 718258/718289 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51059 event pairs, 988 based on Foata normal form. 9/5368 useless extension candidates. Maximal degree in co-relation 42825. Up to 4502 conditions per place. [2024-06-27 22:32:21,975 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 460 selfloop transitions, 128 changer transitions 0/602 dead transitions. [2024-06-27 22:32:21,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 602 transitions, 10140 flow [2024-06-27 22:32:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:32:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:32:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:32:21,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:32:21,976 INFO L175 Difference]: Start difference. First operand has 561 places, 588 transitions, 8796 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:32:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 602 transitions, 10140 flow Killed by 15