./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.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/mix031.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/mix031.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.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 22:18:22,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:18:23,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:18:23,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:18:23,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:18:23,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:18:23,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:18:23,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:18:23,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:18:23,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:18:23,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:18:23,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:18:23,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:18:23,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:18:23,094 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:18:23,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:18:23,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:18:23,095 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:18:23,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:18:23,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:18:23,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:18:23,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:18:23,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:18:23,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:18:23,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:18:23,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:18:23,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:18:23,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:18:23,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:18:23,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:18:23,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:18:23,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:18:23,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:18:23,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:18:23,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:18:23,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:18:23,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:18:23,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:18:23,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:18:23,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:18:23,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:18:23,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:18:23,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:18:23,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:18:23,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:18:23,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:18:23,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:18:23,369 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:18:23,369 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:18:23,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.opt.yml/witness.yml [2024-06-27 22:18:23,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:18:23,457 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:18:23,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 22:18:24,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:18:24,923 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:18:24,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 22:18:24,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9cbae4d/c2893e080f86465b9ee5c7fa1f8530c4/FLAG88d77c4c7 [2024-06-27 22:18:24,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c9cbae4d/c2893e080f86465b9ee5c7fa1f8530c4 [2024-06-27 22:18:24,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:18:24,962 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:18:24,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:18:24,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:18:24,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:18:24,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:23" (1/2) ... [2024-06-27 22:18:24,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5357a36b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:24, skipping insertion in model container [2024-06-27 22:18:24,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:23" (1/2) ... [2024-06-27 22:18:24,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c225547 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:18:24, skipping insertion in model container [2024-06-27 22:18:24,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:18:24" (2/2) ... [2024-06-27 22:18:24,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5357a36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:24, skipping insertion in model container [2024-06-27 22:18:24,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:18:24" (2/2) ... [2024-06-27 22:18:24,972 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:18:24,992 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:18:24,993 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 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_p0_EBX) - (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 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_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:18:24,993 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 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_p0_EBX) - (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 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_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:18:24,994 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:18:24,994 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 22:18:25,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:18:25,223 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/mix031.opt.i[987,1000] [2024-06-27 22:18:25,375 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:18:25,392 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:18:25,438 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/mix031.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:18:25,565 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:18:25,601 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:18:25,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25 WrapperNode [2024-06-27 22:18:25,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:18:25,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:18:25,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:18:25,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:18:25,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,761 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 119 [2024-06-27 22:18:25,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:18:25,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:18:25,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:18:25,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:18:25,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,795 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 22:18:25,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:18:25,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:18:25,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:18:25,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:18:25,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (1/1) ... [2024-06-27 22:18:25,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:18:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:18:25,854 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 22:18:25,878 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 22:18:25,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:18:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:18:25,896 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:18:25,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:18:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:18:25,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:18:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:18:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:18:25,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:18:25,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:18:25,900 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 22:18:26,063 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:18:26,066 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:18:26,488 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:18:26,488 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:18:26,641 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:18:26,641 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:18:26,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:18:26 BoogieIcfgContainer [2024-06-27 22:18:26,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:18:26,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:18:26,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:18:26,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:18:26,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:18:23" (1/4) ... [2024-06-27 22:18:26,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546865d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:18:26, skipping insertion in model container [2024-06-27 22:18:26,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:18:24" (2/4) ... [2024-06-27 22:18:26,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546865d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:18:26, skipping insertion in model container [2024-06-27 22:18:26,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:18:25" (3/4) ... [2024-06-27 22:18:26,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546865d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:18:26, skipping insertion in model container [2024-06-27 22:18:26,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:18:26" (4/4) ... [2024-06-27 22:18:26,655 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-06-27 22:18:26,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:18:26,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:18:26,693 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:18:26,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:18:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 22:18:26,822 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-27 22:18:26,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:18:26,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 22:18:26,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 22:18:26,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-27 22:18:26,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:18:26,845 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;@5f6023bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:18:26,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:18:26,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:18:26,850 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:18:26,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:18:26,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:26,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:18:26,852 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 22:18:26,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 315449771, now seen corresponding path program 1 times [2024-06-27 22:18:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:26,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282108137] [2024-06-27 22:18:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282108137] [2024-06-27 22:18:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282108137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:28,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:28,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:18:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263005138] [2024-06-27 22:18:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:28,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:18:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:18:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:18:28,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-27 22:18:28,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:28,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:28,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-27 22:18:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:28,671 INFO L124 PetriNetUnfolderBase]: 460/857 cut-off events. [2024-06-27 22:18:28,671 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:18:28,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 857 events. 460/857 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4684 event pairs, 210 based on Foata normal form. 42/842 useless extension candidates. Maximal degree in co-relation 1634. Up to 761 conditions per place. [2024-06-27 22:18:28,680 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 30 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-27 22:18:28,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 167 flow [2024-06-27 22:18:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:18:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:18:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 22:18:28,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2024-06-27 22:18:28,695 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 83 transitions. [2024-06-27 22:18:28,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 167 flow [2024-06-27 22:18:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:28,703 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 99 flow [2024-06-27 22:18:28,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-06-27 22:18:28,708 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-27 22:18:28,709 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 99 flow [2024-06-27 22:18:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:28,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:28,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:28,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:18:28,710 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 22:18:28,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1795416246, now seen corresponding path program 1 times [2024-06-27 22:18:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515793914] [2024-06-27 22:18:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515793914] [2024-06-27 22:18:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515793914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:18:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178634067] [2024-06-27 22:18:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:18:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:18:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:18:29,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 22:18:29,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:29,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:29,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 22:18:29,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:30,056 INFO L124 PetriNetUnfolderBase]: 515/1016 cut-off events. [2024-06-27 22:18:30,056 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-27 22:18:30,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1016 events. 515/1016 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5799 event pairs, 355 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 2063. Up to 832 conditions per place. [2024-06-27 22:18:30,065 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 39 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 22:18:30,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 229 flow [2024-06-27 22:18:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:18:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:18:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 22:18:30,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-06-27 22:18:30,070 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 99 flow. Second operand 4 states and 103 transitions. [2024-06-27 22:18:30,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 229 flow [2024-06-27 22:18:30,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:30,074 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 125 flow [2024-06-27 22:18:30,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-27 22:18:30,075 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-27 22:18:30,075 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 125 flow [2024-06-27 22:18:30,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:30,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:30,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:18:30,077 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 22:18:30,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash 176672278, now seen corresponding path program 1 times [2024-06-27 22:18:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:30,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837031785] [2024-06-27 22:18:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:30,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:31,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837031785] [2024-06-27 22:18:31,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837031785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:18:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324172526] [2024-06-27 22:18:31,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:31,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:18:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:18:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:18:31,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 125 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 22:18:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:31,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:31,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:31,473 INFO L124 PetriNetUnfolderBase]: 600/1068 cut-off events. [2024-06-27 22:18:31,473 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-27 22:18:31,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1068 events. 600/1068 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5719 event pairs, 216 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2453. Up to 951 conditions per place. [2024-06-27 22:18:31,483 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 48 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-06-27 22:18:31,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 297 flow [2024-06-27 22:18:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:18:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:18:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:18:31,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2024-06-27 22:18:31,489 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 125 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:18:31,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 297 flow [2024-06-27 22:18:31,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 288 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:31,492 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 151 flow [2024-06-27 22:18:31,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-06-27 22:18:31,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-27 22:18:31,494 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 151 flow [2024-06-27 22:18:31,494 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 22:18:31,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:31,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:31,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:18:31,496 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 22:18:31,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1625164489, now seen corresponding path program 1 times [2024-06-27 22:18:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180203678] [2024-06-27 22:18:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:32,676 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 22:18:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180203678] [2024-06-27 22:18:32,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180203678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:32,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:32,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511109275] [2024-06-27 22:18:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:32,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:32,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:32,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 151 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 22:18:32,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:32,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:32,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:33,020 INFO L124 PetriNetUnfolderBase]: 584/1032 cut-off events. [2024-06-27 22:18:33,021 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-06-27 22:18:33,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1032 events. 584/1032 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5443 event pairs, 143 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 2544. Up to 909 conditions per place. [2024-06-27 22:18:33,027 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 56 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-27 22:18:33,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 363 flow [2024-06-27 22:18:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:18:33,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2024-06-27 22:18:33,029 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 151 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:18:33,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 363 flow [2024-06-27 22:18:33,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 348 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:33,033 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 177 flow [2024-06-27 22:18:33,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-27 22:18:33,034 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-27 22:18:33,034 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 177 flow [2024-06-27 22:18:33,034 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 22:18:33,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:33,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:33,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:18:33,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:33,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2016597867, now seen corresponding path program 1 times [2024-06-27 22:18:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539454187] [2024-06-27 22:18:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:33,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539454187] [2024-06-27 22:18:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539454187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:34,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790171937] [2024-06-27 22:18:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:34,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:34,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 22:18:34,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:34,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:34,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:34,898 INFO L124 PetriNetUnfolderBase]: 568/1006 cut-off events. [2024-06-27 22:18:34,898 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2024-06-27 22:18:34,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1006 events. 568/1006 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5201 event pairs, 90 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2611. Up to 867 conditions per place. [2024-06-27 22:18:34,906 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-06-27 22:18:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 429 flow [2024-06-27 22:18:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:18:34,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 22:18:34,908 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 177 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:18:34,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 429 flow [2024-06-27 22:18:34,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 408 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:34,914 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 203 flow [2024-06-27 22:18:34,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 22:18:34,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-27 22:18:34,919 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 203 flow [2024-06-27 22:18:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 22:18:34,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:34,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:34,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:18:34,922 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 22:18:34,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1664394424, now seen corresponding path program 1 times [2024-06-27 22:18:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434475342] [2024-06-27 22:18:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:35,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:35,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434475342] [2024-06-27 22:18:35,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434475342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:35,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:18:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886841272] [2024-06-27 22:18:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:35,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:18:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:18:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:18:36,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:36,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:36,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:36,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:36,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:36,423 INFO L124 PetriNetUnfolderBase]: 514/1048 cut-off events. [2024-06-27 22:18:36,423 INFO L125 PetriNetUnfolderBase]: For 1090/1096 co-relation queries the response was YES. [2024-06-27 22:18:36,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1048 events. 514/1048 cut-off events. For 1090/1096 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6040 event pairs, 198 based on Foata normal form. 7/1002 useless extension candidates. Maximal degree in co-relation 2667. Up to 853 conditions per place. [2024-06-27 22:18:36,432 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 40 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-27 22:18:36,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 355 flow [2024-06-27 22:18:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:18:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:18:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-27 22:18:36,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-06-27 22:18:36,434 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 203 flow. Second operand 5 states and 107 transitions. [2024-06-27 22:18:36,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 355 flow [2024-06-27 22:18:36,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 322 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:36,438 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 251 flow [2024-06-27 22:18:36,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 22:18:36,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-27 22:18:36,441 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 251 flow [2024-06-27 22:18:36,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:36,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:36,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:36,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:18:36,442 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 22:18:36,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:36,443 INFO L85 PathProgramCache]: Analyzing trace with hash 56620297, now seen corresponding path program 1 times [2024-06-27 22:18:36,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:36,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238217314] [2024-06-27 22:18:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238217314] [2024-06-27 22:18:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238217314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254550582] [2024-06-27 22:18:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:37,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:37,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:37,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 251 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 22:18:37,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:37,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:38,188 INFO L124 PetriNetUnfolderBase]: 689/1302 cut-off events. [2024-06-27 22:18:38,188 INFO L125 PetriNetUnfolderBase]: For 1656/1662 co-relation queries the response was YES. [2024-06-27 22:18:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1302 events. 689/1302 cut-off events. For 1656/1662 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7358 event pairs, 266 based on Foata normal form. 7/1256 useless extension candidates. Maximal degree in co-relation 3497. Up to 1133 conditions per place. [2024-06-27 22:18:38,196 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 45 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-27 22:18:38,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 403 flow [2024-06-27 22:18:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-27 22:18:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:18:38,198 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 251 flow. Second operand 6 states and 116 transitions. [2024-06-27 22:18:38,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 403 flow [2024-06-27 22:18:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 401 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:18:38,202 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 299 flow [2024-06-27 22:18:38,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-27 22:18:38,203 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-27 22:18:38,203 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 299 flow [2024-06-27 22:18:38,203 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 22:18:38,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:38,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:18:38,204 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 22:18:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1248869371, now seen corresponding path program 1 times [2024-06-27 22:18:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130499987] [2024-06-27 22:18:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:39,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130499987] [2024-06-27 22:18:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130499987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:39,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:39,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666304901] [2024-06-27 22:18:39,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:39,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:39,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:18:39,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:39,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:39,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:18:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:39,913 INFO L124 PetriNetUnfolderBase]: 653/1297 cut-off events. [2024-06-27 22:18:39,913 INFO L125 PetriNetUnfolderBase]: For 2260/2266 co-relation queries the response was YES. [2024-06-27 22:18:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 1297 events. 653/1297 cut-off events. For 2260/2266 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7530 event pairs, 237 based on Foata normal form. 7/1246 useless extension candidates. Maximal degree in co-relation 3664. Up to 1049 conditions per place. [2024-06-27 22:18:39,921 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 51 selfloop transitions, 17 changer transitions 0/80 dead transitions. [2024-06-27 22:18:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 519 flow [2024-06-27 22:18:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-27 22:18:39,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2024-06-27 22:18:39,923 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 299 flow. Second operand 6 states and 124 transitions. [2024-06-27 22:18:39,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 519 flow [2024-06-27 22:18:39,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 491 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:39,929 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 383 flow [2024-06-27 22:18:39,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-27 22:18:39,931 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-27 22:18:39,931 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 383 flow [2024-06-27 22:18:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:39,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:39,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:18:39,932 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 22:18:39,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1256517691, now seen corresponding path program 2 times [2024-06-27 22:18:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528846007] [2024-06-27 22:18:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:41,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:41,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528846007] [2024-06-27 22:18:41,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528846007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:41,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:41,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141727191] [2024-06-27 22:18:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:41,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:41,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:41,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:18:41,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:41,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:41,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:18:41,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:41,621 INFO L124 PetriNetUnfolderBase]: 661/1310 cut-off events. [2024-06-27 22:18:41,621 INFO L125 PetriNetUnfolderBase]: For 2977/2983 co-relation queries the response was YES. [2024-06-27 22:18:41,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 1310 events. 661/1310 cut-off events. For 2977/2983 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7597 event pairs, 241 based on Foata normal form. 7/1259 useless extension candidates. Maximal degree in co-relation 3945. Up to 1039 conditions per place. [2024-06-27 22:18:41,631 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 49 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-06-27 22:18:41,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 613 flow [2024-06-27 22:18:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:18:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:18:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 22:18:41,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341880341880342 [2024-06-27 22:18:41,633 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 383 flow. Second operand 6 states and 125 transitions. [2024-06-27 22:18:41,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 613 flow [2024-06-27 22:18:41,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 599 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-27 22:18:41,639 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 471 flow [2024-06-27 22:18:41,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-27 22:18:41,640 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-27 22:18:41,641 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 471 flow [2024-06-27 22:18:41,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:41,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:41,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:41,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:18:41,642 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 22:18:41,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:41,642 INFO L85 PathProgramCache]: Analyzing trace with hash -907755497, now seen corresponding path program 3 times [2024-06-27 22:18:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:41,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706946503] [2024-06-27 22:18:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:41,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706946503] [2024-06-27 22:18:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706946503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:42,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:42,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85430443] [2024-06-27 22:18:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:42,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:42,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:42,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:18:42,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:42,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:18:42,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:43,158 INFO L124 PetriNetUnfolderBase]: 667/1319 cut-off events. [2024-06-27 22:18:43,159 INFO L125 PetriNetUnfolderBase]: For 3822/3828 co-relation queries the response was YES. [2024-06-27 22:18:43,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4269 conditions, 1319 events. 667/1319 cut-off events. For 3822/3828 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7638 event pairs, 236 based on Foata normal form. 7/1268 useless extension candidates. Maximal degree in co-relation 4236. Up to 1066 conditions per place. [2024-06-27 22:18:43,169 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 61 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-27 22:18:43,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 729 flow [2024-06-27 22:18:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 22:18:43,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201465201465202 [2024-06-27 22:18:43,171 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 471 flow. Second operand 7 states and 142 transitions. [2024-06-27 22:18:43,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 729 flow [2024-06-27 22:18:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 692 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:43,179 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 558 flow [2024-06-27 22:18:43,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=558, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-06-27 22:18:43,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-27 22:18:43,181 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 558 flow [2024-06-27 22:18:43,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:43,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:43,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:43,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:18:43,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:43,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash -920262892, now seen corresponding path program 1 times [2024-06-27 22:18:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:43,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130304947] [2024-06-27 22:18:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:43,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130304947] [2024-06-27 22:18:44,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130304947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:44,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:44,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687856573] [2024-06-27 22:18:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:44,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 22:18:44,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 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 22:18:44,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:44,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 22:18:44,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:45,450 INFO L124 PetriNetUnfolderBase]: 668/1361 cut-off events. [2024-06-27 22:18:45,450 INFO L125 PetriNetUnfolderBase]: For 4254/4254 co-relation queries the response was YES. [2024-06-27 22:18:45,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 1361 events. 668/1361 cut-off events. For 4254/4254 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7914 event pairs, 202 based on Foata normal form. 4/1310 useless extension candidates. Maximal degree in co-relation 4208. Up to 962 conditions per place. [2024-06-27 22:18:45,461 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 86 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-27 22:18:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 882 flow [2024-06-27 22:18:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:45,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 22:18:45,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-27 22:18:45,463 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 558 flow. Second operand 8 states and 186 transitions. [2024-06-27 22:18:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 882 flow [2024-06-27 22:18:45,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 832 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:45,472 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 532 flow [2024-06-27 22:18:45,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-06-27 22:18:45,472 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-27 22:18:45,472 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 532 flow [2024-06-27 22:18:45,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 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 22:18:45,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:45,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:45,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:18:45,473 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 22:18:45,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1256528603, now seen corresponding path program 1 times [2024-06-27 22:18:45,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941399679] [2024-06-27 22:18:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:46,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:46,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941399679] [2024-06-27 22:18:46,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941399679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:46,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459757327] [2024-06-27 22:18:46,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:46,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:46,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 532 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 22:18:46,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:46,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:46,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:47,355 INFO L124 PetriNetUnfolderBase]: 693/1325 cut-off events. [2024-06-27 22:18:47,355 INFO L125 PetriNetUnfolderBase]: For 4862/4865 co-relation queries the response was YES. [2024-06-27 22:18:47,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4472 conditions, 1325 events. 693/1325 cut-off events. For 4862/4865 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7436 event pairs, 236 based on Foata normal form. 4/1287 useless extension candidates. Maximal degree in co-relation 4436. Up to 1124 conditions per place. [2024-06-27 22:18:47,370 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 70 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-27 22:18:47,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 762 flow [2024-06-27 22:18:47,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:18:47,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47985347985347987 [2024-06-27 22:18:47,372 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 532 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:18:47,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 762 flow [2024-06-27 22:18:47,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 710 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:47,386 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 544 flow [2024-06-27 22:18:47,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-06-27 22:18:47,387 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-27 22:18:47,387 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 544 flow [2024-06-27 22:18:47,388 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 22:18:47,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:47,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:18:47,388 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 22:18:47,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1431988671, now seen corresponding path program 1 times [2024-06-27 22:18:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:47,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440848095] [2024-06-27 22:18:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:48,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:48,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440848095] [2024-06-27 22:18:48,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440848095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:48,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:48,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379097488] [2024-06-27 22:18:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:48,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:48,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:48,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:48,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:48,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 544 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 22:18:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:48,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:48,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:49,108 INFO L124 PetriNetUnfolderBase]: 713/1438 cut-off events. [2024-06-27 22:18:49,108 INFO L125 PetriNetUnfolderBase]: For 5498/5498 co-relation queries the response was YES. [2024-06-27 22:18:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 1438 events. 713/1438 cut-off events. For 5498/5498 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8273 event pairs, 211 based on Foata normal form. 1/1382 useless extension candidates. Maximal degree in co-relation 4683. Up to 1101 conditions per place. [2024-06-27 22:18:49,123 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 72 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-06-27 22:18:49,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 860 flow [2024-06-27 22:18:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 22:18:49,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-06-27 22:18:49,125 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 544 flow. Second operand 7 states and 137 transitions. [2024-06-27 22:18:49,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 860 flow [2024-06-27 22:18:49,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 108 transitions, 818 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:49,133 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 655 flow [2024-06-27 22:18:49,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2024-06-27 22:18:49,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 22:18:49,135 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 655 flow [2024-06-27 22:18:49,136 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 22:18:49,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:49,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:18:49,136 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 22:18:49,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 288146692, now seen corresponding path program 1 times [2024-06-27 22:18:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892701238] [2024-06-27 22:18:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892701238] [2024-06-27 22:18:50,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892701238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:50,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:50,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876056275] [2024-06-27 22:18:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:50,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:50,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 655 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 22:18:50,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:50,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:50,957 INFO L124 PetriNetUnfolderBase]: 725/1452 cut-off events. [2024-06-27 22:18:50,958 INFO L125 PetriNetUnfolderBase]: For 6343/6343 co-relation queries the response was YES. [2024-06-27 22:18:50,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4968 conditions, 1452 events. 725/1452 cut-off events. For 6343/6343 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8374 event pairs, 222 based on Foata normal form. 1/1396 useless extension candidates. Maximal degree in co-relation 4928. Up to 1141 conditions per place. [2024-06-27 22:18:50,970 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 70 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-27 22:18:50,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 911 flow [2024-06-27 22:18:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:18:50,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-27 22:18:50,972 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 655 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:18:50,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 911 flow [2024-06-27 22:18:50,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 874 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:18:50,983 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 709 flow [2024-06-27 22:18:50,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-27 22:18:50,984 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-27 22:18:50,984 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 709 flow [2024-06-27 22:18:50,984 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 22:18:50,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:50,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:18:50,985 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 22:18:50,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 60245263, now seen corresponding path program 2 times [2024-06-27 22:18:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319540108] [2024-06-27 22:18:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:52,255 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 22:18:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:52,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319540108] [2024-06-27 22:18:52,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319540108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:52,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:52,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948918686] [2024-06-27 22:18:52,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:52,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:52,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:52,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:52,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 709 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 22:18:52,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:52,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:52,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:52,868 INFO L124 PetriNetUnfolderBase]: 733/1466 cut-off events. [2024-06-27 22:18:52,868 INFO L125 PetriNetUnfolderBase]: For 7756/7756 co-relation queries the response was YES. [2024-06-27 22:18:52,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5292 conditions, 1466 events. 733/1466 cut-off events. For 7756/7756 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8422 event pairs, 209 based on Foata normal form. 1/1410 useless extension candidates. Maximal degree in co-relation 5249. Up to 1106 conditions per place. [2024-06-27 22:18:52,877 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 70 selfloop transitions, 33 changer transitions 0/114 dead transitions. [2024-06-27 22:18:52,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 989 flow [2024-06-27 22:18:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:18:52,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 22:18:52,879 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 709 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:18:52,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 989 flow [2024-06-27 22:18:52,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 114 transitions, 922 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:52,891 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 753 flow [2024-06-27 22:18:52,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=753, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-06-27 22:18:52,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-27 22:18:52,892 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 753 flow [2024-06-27 22:18:52,892 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 22:18:52,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:52,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:18:52,893 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 22:18:52,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1422784461, now seen corresponding path program 3 times [2024-06-27 22:18:52,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:52,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117482199] [2024-06-27 22:18:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:52,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117482199] [2024-06-27 22:18:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117482199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:54,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:54,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559762627] [2024-06-27 22:18:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:54,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:54,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:54,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:54,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 753 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 22:18:54,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:54,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:54,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:54,732 INFO L124 PetriNetUnfolderBase]: 741/1479 cut-off events. [2024-06-27 22:18:54,733 INFO L125 PetriNetUnfolderBase]: For 9179/9179 co-relation queries the response was YES. [2024-06-27 22:18:54,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5562 conditions, 1479 events. 741/1479 cut-off events. For 9179/9179 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8499 event pairs, 216 based on Foata normal form. 1/1423 useless extension candidates. Maximal degree in co-relation 5518. Up to 1078 conditions per place. [2024-06-27 22:18:54,743 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 65 selfloop transitions, 44 changer transitions 0/120 dead transitions. [2024-06-27 22:18:54,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 1117 flow [2024-06-27 22:18:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:18:54,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-27 22:18:54,747 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 753 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:18:54,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 1117 flow [2024-06-27 22:18:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 120 transitions, 1036 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:54,765 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 848 flow [2024-06-27 22:18:54,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=848, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2024-06-27 22:18:54,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-27 22:18:54,766 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 848 flow [2024-06-27 22:18:54,766 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 22:18:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:54,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:18:54,767 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 22:18:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1422784182, now seen corresponding path program 2 times [2024-06-27 22:18:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:54,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645095929] [2024-06-27 22:18:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645095929] [2024-06-27 22:18:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645095929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971838873] [2024-06-27 22:18:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:56,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:56,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 848 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 22:18:56,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:56,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:56,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:56,481 INFO L124 PetriNetUnfolderBase]: 767/1511 cut-off events. [2024-06-27 22:18:56,481 INFO L125 PetriNetUnfolderBase]: For 10230/10230 co-relation queries the response was YES. [2024-06-27 22:18:56,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 1511 events. 767/1511 cut-off events. For 10230/10230 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8608 event pairs, 225 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 5782. Up to 1133 conditions per place. [2024-06-27 22:18:56,492 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 71 selfloop transitions, 42 changer transitions 0/130 dead transitions. [2024-06-27 22:18:56,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1288 flow [2024-06-27 22:18:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:18:56,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-27 22:18:56,494 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 848 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:18:56,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1288 flow [2024-06-27 22:18:56,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 1228 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:56,511 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 992 flow [2024-06-27 22:18:56,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=992, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2024-06-27 22:18:56,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-27 22:18:56,513 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 992 flow [2024-06-27 22:18:56,513 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 22:18:56,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:56,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:56,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:18:56,513 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 22:18:56,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1422457752, now seen corresponding path program 3 times [2024-06-27 22:18:56,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:56,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230384103] [2024-06-27 22:18:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:56,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:57,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230384103] [2024-06-27 22:18:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230384103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:57,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178197732] [2024-06-27 22:18:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:57,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 992 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 22:18:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:57,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:58,249 INFO L124 PetriNetUnfolderBase]: 765/1508 cut-off events. [2024-06-27 22:18:58,249 INFO L125 PetriNetUnfolderBase]: For 11454/11454 co-relation queries the response was YES. [2024-06-27 22:18:58,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 1508 events. 765/1508 cut-off events. For 11454/11454 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8593 event pairs, 225 based on Foata normal form. 1/1452 useless extension candidates. Maximal degree in co-relation 6008. Up to 1131 conditions per place. [2024-06-27 22:18:58,261 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 67 selfloop transitions, 45 changer transitions 0/129 dead transitions. [2024-06-27 22:18:58,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 1290 flow [2024-06-27 22:18:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 22:18:58,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-27 22:18:58,263 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 992 flow. Second operand 7 states and 136 transitions. [2024-06-27 22:18:58,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 1290 flow [2024-06-27 22:18:58,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 129 transitions, 1215 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:58,283 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 1013 flow [2024-06-27 22:18:58,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1013, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2024-06-27 22:18:58,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-27 22:18:58,284 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 1013 flow [2024-06-27 22:18:58,284 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 22:18:58,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:58,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:58,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:18:58,285 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 22:18:58,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:58,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1908256511, now seen corresponding path program 4 times [2024-06-27 22:18:58,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:58,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140728513] [2024-06-27 22:18:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:58,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140728513] [2024-06-27 22:18:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140728513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:59,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:59,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:18:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207398441] [2024-06-27 22:18:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:59,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:18:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:18:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:18:59,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:18:59,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 1013 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 22:18:59,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:59,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:18:59,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:59,751 INFO L124 PetriNetUnfolderBase]: 785/1546 cut-off events. [2024-06-27 22:18:59,751 INFO L125 PetriNetUnfolderBase]: For 12808/12808 co-relation queries the response was YES. [2024-06-27 22:18:59,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 1546 events. 785/1546 cut-off events. For 12808/12808 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8803 event pairs, 208 based on Foata normal form. 1/1490 useless extension candidates. Maximal degree in co-relation 6400. Up to 1188 conditions per place. [2024-06-27 22:18:59,761 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 96 selfloop transitions, 40 changer transitions 0/150 dead transitions. [2024-06-27 22:18:59,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 150 transitions, 1495 flow [2024-06-27 22:18:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:18:59,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 22:18:59,763 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 1013 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:18:59,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 150 transitions, 1495 flow [2024-06-27 22:18:59,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1402 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:59,784 INFO L231 Difference]: Finished difference. Result has 109 places, 130 transitions, 1190 flow [2024-06-27 22:18:59,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1190, PETRI_PLACES=109, PETRI_TRANSITIONS=130} [2024-06-27 22:18:59,785 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-27 22:18:59,785 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 130 transitions, 1190 flow [2024-06-27 22:18:59,785 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 22:18:59,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:59,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:59,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:18:59,786 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 22:18:59,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash 833897261, now seen corresponding path program 5 times [2024-06-27 22:18:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560081789] [2024-06-27 22:18:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:00,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560081789] [2024-06-27 22:19:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560081789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:00,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:00,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072808930] [2024-06-27 22:19:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:00,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:00,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 1190 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 22:19:00,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:00,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:00,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:01,323 INFO L124 PetriNetUnfolderBase]: 806/1578 cut-off events. [2024-06-27 22:19:01,323 INFO L125 PetriNetUnfolderBase]: For 14014/14014 co-relation queries the response was YES. [2024-06-27 22:19:01,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 1578 events. 806/1578 cut-off events. For 14014/14014 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8974 event pairs, 207 based on Foata normal form. 1/1522 useless extension candidates. Maximal degree in co-relation 6741. Up to 1214 conditions per place. [2024-06-27 22:19:01,334 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 103 selfloop transitions, 47 changer transitions 0/164 dead transitions. [2024-06-27 22:19:01,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 164 transitions, 1726 flow [2024-06-27 22:19:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:19:01,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 22:19:01,337 INFO L175 Difference]: Start difference. First operand has 109 places, 130 transitions, 1190 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:19:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 164 transitions, 1726 flow [2024-06-27 22:19:01,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 164 transitions, 1603 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:01,362 INFO L231 Difference]: Finished difference. Result has 115 places, 143 transitions, 1390 flow [2024-06-27 22:19:01,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1390, PETRI_PLACES=115, PETRI_TRANSITIONS=143} [2024-06-27 22:19:01,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-06-27 22:19:01,363 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 143 transitions, 1390 flow [2024-06-27 22:19:01,363 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 22:19:01,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:01,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:01,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:19:01,364 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 22:19:01,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2144059240, now seen corresponding path program 4 times [2024-06-27 22:19:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634487916] [2024-06-27 22:19:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:02,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634487916] [2024-06-27 22:19:02,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634487916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:02,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:02,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283216420] [2024-06-27 22:19:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:02,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:02,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 143 transitions, 1390 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 22:19:02,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:02,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:02,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:02,965 INFO L124 PetriNetUnfolderBase]: 804/1578 cut-off events. [2024-06-27 22:19:02,965 INFO L125 PetriNetUnfolderBase]: For 14480/14480 co-relation queries the response was YES. [2024-06-27 22:19:02,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6722 conditions, 1578 events. 804/1578 cut-off events. For 14480/14480 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9031 event pairs, 228 based on Foata normal form. 1/1522 useless extension candidates. Maximal degree in co-relation 6669. Up to 1233 conditions per place. [2024-06-27 22:19:02,980 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 109 selfloop transitions, 30 changer transitions 0/165 dead transitions. [2024-06-27 22:19:02,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 165 transitions, 1749 flow [2024-06-27 22:19:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:19:02,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 22:19:02,983 INFO L175 Difference]: Start difference. First operand has 115 places, 143 transitions, 1390 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:19:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 165 transitions, 1749 flow [2024-06-27 22:19:03,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 165 transitions, 1634 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:03,054 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 1372 flow [2024-06-27 22:19:03,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1372, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2024-06-27 22:19:03,055 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-27 22:19:03,055 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 1372 flow [2024-06-27 22:19:03,055 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 22:19:03,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:03,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:03,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:19:03,056 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 22:19:03,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2127971821, now seen corresponding path program 6 times [2024-06-27 22:19:03,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:03,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269230329] [2024-06-27 22:19:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:03,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:04,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:04,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269230329] [2024-06-27 22:19:04,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269230329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:04,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:04,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:19:04,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712998363] [2024-06-27 22:19:04,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:04,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:19:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:19:04,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:19:04,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 1372 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 22:19:04,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:04,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:04,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:04,611 INFO L124 PetriNetUnfolderBase]: 808/1582 cut-off events. [2024-06-27 22:19:04,612 INFO L125 PetriNetUnfolderBase]: For 15421/15421 co-relation queries the response was YES. [2024-06-27 22:19:04,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6832 conditions, 1582 events. 808/1582 cut-off events. For 15421/15421 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9025 event pairs, 211 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 6780. Up to 1189 conditions per place. [2024-06-27 22:19:04,621 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 91 selfloop transitions, 62 changer transitions 0/168 dead transitions. [2024-06-27 22:19:04,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 168 transitions, 1756 flow [2024-06-27 22:19:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:19:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 22:19:04,623 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 1372 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:19:04,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 168 transitions, 1756 flow [2024-06-27 22:19:04,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 168 transitions, 1648 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:04,651 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1422 flow [2024-06-27 22:19:04,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1422, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-06-27 22:19:04,651 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-27 22:19:04,652 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1422 flow [2024-06-27 22:19:04,652 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 22:19:04,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:04,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:04,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:19:04,652 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 22:19:04,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1422445848, now seen corresponding path program 1 times [2024-06-27 22:19:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:04,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228510119] [2024-06-27 22:19:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:06,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:06,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228510119] [2024-06-27 22:19:06,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228510119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:06,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:06,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:06,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837344547] [2024-06-27 22:19:06,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:06,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:06,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:06,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1422 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 22:19:06,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:06,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:06,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:06,455 INFO L124 PetriNetUnfolderBase]: 804/1580 cut-off events. [2024-06-27 22:19:06,455 INFO L125 PetriNetUnfolderBase]: For 15766/15766 co-relation queries the response was YES. [2024-06-27 22:19:06,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1580 events. 804/1580 cut-off events. For 15766/15766 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9109 event pairs, 242 based on Foata normal form. 1/1523 useless extension candidates. Maximal degree in co-relation 6709. Up to 1242 conditions per place. [2024-06-27 22:19:06,464 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-27 22:19:06,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1796 flow [2024-06-27 22:19:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:19:06,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:19:06,473 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1422 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:19:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1796 flow [2024-06-27 22:19:06,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 169 transitions, 1604 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:06,504 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1314 flow [2024-06-27 22:19:06,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-06-27 22:19:06,506 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-27 22:19:06,506 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1314 flow [2024-06-27 22:19:06,506 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 22:19:06,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:06,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:06,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:19:06,507 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 22:19:06,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1740451144, now seen corresponding path program 1 times [2024-06-27 22:19:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355135009] [2024-06-27 22:19:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:07,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355135009] [2024-06-27 22:19:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355135009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:07,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:07,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190776978] [2024-06-27 22:19:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:07,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:07,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:07,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:07,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1314 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 22:19:07,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:07,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:07,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:08,315 INFO L124 PetriNetUnfolderBase]: 825/1609 cut-off events. [2024-06-27 22:19:08,315 INFO L125 PetriNetUnfolderBase]: For 17268/17268 co-relation queries the response was YES. [2024-06-27 22:19:08,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 1609 events. 825/1609 cut-off events. For 17268/17268 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9194 event pairs, 199 based on Foata normal form. 1/1552 useless extension candidates. Maximal degree in co-relation 7007. Up to 1215 conditions per place. [2024-06-27 22:19:08,324 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 124 selfloop transitions, 42 changer transitions 0/181 dead transitions. [2024-06-27 22:19:08,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 181 transitions, 1822 flow [2024-06-27 22:19:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:19:08,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 22:19:08,326 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1314 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:19:08,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 181 transitions, 1822 flow [2024-06-27 22:19:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1760 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:08,352 INFO L231 Difference]: Finished difference. Result has 121 places, 163 transitions, 1480 flow [2024-06-27 22:19:08,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1480, PETRI_PLACES=121, PETRI_TRANSITIONS=163} [2024-06-27 22:19:08,353 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-27 22:19:08,353 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 163 transitions, 1480 flow [2024-06-27 22:19:08,354 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 22:19:08,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:08,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:19:08,354 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 22:19:08,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:08,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1862010838, now seen corresponding path program 1 times [2024-06-27 22:19:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039982761] [2024-06-27 22:19:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:09,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:09,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039982761] [2024-06-27 22:19:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039982761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:09,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:09,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235585582] [2024-06-27 22:19:09,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:09,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:09,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:09,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:09,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:09,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 163 transitions, 1480 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 22:19:09,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:09,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:09,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:10,090 INFO L124 PetriNetUnfolderBase]: 884/1670 cut-off events. [2024-06-27 22:19:10,090 INFO L125 PetriNetUnfolderBase]: For 19008/19008 co-relation queries the response was YES. [2024-06-27 22:19:10,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7598 conditions, 1670 events. 884/1670 cut-off events. For 19008/19008 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9333 event pairs, 208 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 7542. Up to 1348 conditions per place. [2024-06-27 22:19:10,099 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 127 selfloop transitions, 47 changer transitions 1/183 dead transitions. [2024-06-27 22:19:10,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 183 transitions, 1926 flow [2024-06-27 22:19:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:19:10,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 22:19:10,101 INFO L175 Difference]: Start difference. First operand has 121 places, 163 transitions, 1480 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:19:10,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 183 transitions, 1926 flow [2024-06-27 22:19:10,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 183 transitions, 1834 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:10,134 INFO L231 Difference]: Finished difference. Result has 126 places, 165 transitions, 1538 flow [2024-06-27 22:19:10,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1538, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2024-06-27 22:19:10,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-27 22:19:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 1538 flow [2024-06-27 22:19:10,135 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 22:19:10,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:10,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:19:10,136 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 22:19:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1305399462, now seen corresponding path program 2 times [2024-06-27 22:19:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972727179] [2024-06-27 22:19:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:10,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:11,207 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 22:19:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972727179] [2024-06-27 22:19:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972727179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356544321] [2024-06-27 22:19:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:11,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:11,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 1538 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 22:19:11,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:11,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:11,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:11,735 INFO L124 PetriNetUnfolderBase]: 755/1491 cut-off events. [2024-06-27 22:19:11,735 INFO L125 PetriNetUnfolderBase]: For 20490/20490 co-relation queries the response was YES. [2024-06-27 22:19:11,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 1491 events. 755/1491 cut-off events. For 20490/20490 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8459 event pairs, 156 based on Foata normal form. 1/1434 useless extension candidates. Maximal degree in co-relation 7111. Up to 1069 conditions per place. [2024-06-27 22:19:11,743 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 119 selfloop transitions, 51 changer transitions 0/186 dead transitions. [2024-06-27 22:19:11,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 186 transitions, 1986 flow [2024-06-27 22:19:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:19:11,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 22:19:11,745 INFO L175 Difference]: Start difference. First operand has 126 places, 165 transitions, 1538 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:19:11,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 186 transitions, 1986 flow [2024-06-27 22:19:11,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 186 transitions, 1860 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:11,782 INFO L231 Difference]: Finished difference. Result has 127 places, 168 transitions, 1578 flow [2024-06-27 22:19:11,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1578, PETRI_PLACES=127, PETRI_TRANSITIONS=168} [2024-06-27 22:19:11,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-27 22:19:11,783 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 168 transitions, 1578 flow [2024-06-27 22:19:11,784 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 22:19:11,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:11,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:19:11,784 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 22:19:11,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 342604668, now seen corresponding path program 3 times [2024-06-27 22:19:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420775645] [2024-06-27 22:19:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:13,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420775645] [2024-06-27 22:19:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420775645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783436437] [2024-06-27 22:19:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:13,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:13,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:13,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 168 transitions, 1578 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 22:19:13,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:13,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:13,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:13,530 INFO L124 PetriNetUnfolderBase]: 763/1503 cut-off events. [2024-06-27 22:19:13,530 INFO L125 PetriNetUnfolderBase]: For 22638/22638 co-relation queries the response was YES. [2024-06-27 22:19:13,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7407 conditions, 1503 events. 763/1503 cut-off events. For 22638/22638 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8555 event pairs, 157 based on Foata normal form. 1/1446 useless extension candidates. Maximal degree in co-relation 7347. Up to 1052 conditions per place. [2024-06-27 22:19:13,541 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 112 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-27 22:19:13,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 189 transitions, 2040 flow [2024-06-27 22:19:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:13,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:19:13,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 22:19:13,543 INFO L175 Difference]: Start difference. First operand has 127 places, 168 transitions, 1578 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:19:13,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 189 transitions, 2040 flow [2024-06-27 22:19:13,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 189 transitions, 1900 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:13,572 INFO L231 Difference]: Finished difference. Result has 129 places, 171 transitions, 1629 flow [2024-06-27 22:19:13,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1629, PETRI_PLACES=129, PETRI_TRANSITIONS=171} [2024-06-27 22:19:13,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-27 22:19:13,573 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 1629 flow [2024-06-27 22:19:13,573 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 22:19:13,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:13,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:19:13,574 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 22:19:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1867603858, now seen corresponding path program 2 times [2024-06-27 22:19:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312412583] [2024-06-27 22:19:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312412583] [2024-06-27 22:19:14,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312412583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:14,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641441039] [2024-06-27 22:19:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:14,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:14,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 171 transitions, 1629 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 22:19:14,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:14,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:14,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:15,275 INFO L124 PetriNetUnfolderBase]: 821/1568 cut-off events. [2024-06-27 22:19:15,275 INFO L125 PetriNetUnfolderBase]: For 24985/24985 co-relation queries the response was YES. [2024-06-27 22:19:15,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7958 conditions, 1568 events. 821/1568 cut-off events. For 24985/24985 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8752 event pairs, 164 based on Foata normal form. 1/1511 useless extension candidates. Maximal degree in co-relation 7897. Up to 1197 conditions per place. [2024-06-27 22:19:15,285 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 64 changer transitions 0/195 dead transitions. [2024-06-27 22:19:15,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 195 transitions, 2221 flow [2024-06-27 22:19:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:19:15,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 22:19:15,286 INFO L175 Difference]: Start difference. First operand has 129 places, 171 transitions, 1629 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:19:15,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 195 transitions, 2221 flow [2024-06-27 22:19:15,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 195 transitions, 2054 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:15,325 INFO L231 Difference]: Finished difference. Result has 131 places, 177 transitions, 1711 flow [2024-06-27 22:19:15,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1711, PETRI_PLACES=131, PETRI_TRANSITIONS=177} [2024-06-27 22:19:15,325 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-06-27 22:19:15,326 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 177 transitions, 1711 flow [2024-06-27 22:19:15,326 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 22:19:15,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:15,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:19:15,326 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 22:19:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1867612538, now seen corresponding path program 1 times [2024-06-27 22:19:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704449223] [2024-06-27 22:19:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:16,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:16,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704449223] [2024-06-27 22:19:16,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704449223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:16,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:16,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913996954] [2024-06-27 22:19:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:16,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:16,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:16,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 177 transitions, 1711 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 22:19:16,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:16,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:16,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:16,998 INFO L124 PetriNetUnfolderBase]: 778/1530 cut-off events. [2024-06-27 22:19:16,998 INFO L125 PetriNetUnfolderBase]: For 26606/26606 co-relation queries the response was YES. [2024-06-27 22:19:17,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1530 events. 778/1530 cut-off events. For 26606/26606 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8734 event pairs, 161 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 7712. Up to 1155 conditions per place. [2024-06-27 22:19:17,007 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 135 selfloop transitions, 32 changer transitions 0/197 dead transitions. [2024-06-27 22:19:17,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 197 transitions, 2149 flow [2024-06-27 22:19:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:19:17,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 22:19:17,008 INFO L175 Difference]: Start difference. First operand has 131 places, 177 transitions, 1711 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:19:17,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 197 transitions, 2149 flow [2024-06-27 22:19:17,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 197 transitions, 2025 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:17,037 INFO L231 Difference]: Finished difference. Result has 135 places, 180 transitions, 1714 flow [2024-06-27 22:19:17,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1714, PETRI_PLACES=135, PETRI_TRANSITIONS=180} [2024-06-27 22:19:17,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-27 22:19:17,038 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 180 transitions, 1714 flow [2024-06-27 22:19:17,038 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 22:19:17,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:17,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:19:17,039 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 22:19:17,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1740205376, now seen corresponding path program 3 times [2024-06-27 22:19:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70374812] [2024-06-27 22:19:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:18,226 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 22:19:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70374812] [2024-06-27 22:19:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70374812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:18,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061834067] [2024-06-27 22:19:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:18,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 180 transitions, 1714 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 22:19:18,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:18,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:18,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:18,743 INFO L124 PetriNetUnfolderBase]: 827/1577 cut-off events. [2024-06-27 22:19:18,743 INFO L125 PetriNetUnfolderBase]: For 28171/28171 co-relation queries the response was YES. [2024-06-27 22:19:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1577 events. 827/1577 cut-off events. For 28171/28171 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8784 event pairs, 161 based on Foata normal form. 1/1520 useless extension candidates. Maximal degree in co-relation 8228. Up to 1207 conditions per place. [2024-06-27 22:19:18,752 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 122 selfloop transitions, 67 changer transitions 0/197 dead transitions. [2024-06-27 22:19:18,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 197 transitions, 2146 flow [2024-06-27 22:19:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:19:18,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-27 22:19:18,754 INFO L175 Difference]: Start difference. First operand has 135 places, 180 transitions, 1714 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:19:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 197 transitions, 2146 flow [2024-06-27 22:19:18,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 197 transitions, 2017 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:18,786 INFO L231 Difference]: Finished difference. Result has 138 places, 180 transitions, 1726 flow [2024-06-27 22:19:18,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1726, PETRI_PLACES=138, PETRI_TRANSITIONS=180} [2024-06-27 22:19:18,786 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 22:19:18,786 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 180 transitions, 1726 flow [2024-06-27 22:19:18,786 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 22:19:18,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:18,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:19:18,787 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 22:19:18,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 627713466, now seen corresponding path program 2 times [2024-06-27 22:19:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685810836] [2024-06-27 22:19:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685810836] [2024-06-27 22:19:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685810836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328150624] [2024-06-27 22:19:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:20,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:20,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:20,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 180 transitions, 1726 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 22:19:20,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:20,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:20,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:20,537 INFO L124 PetriNetUnfolderBase]: 796/1556 cut-off events. [2024-06-27 22:19:20,538 INFO L125 PetriNetUnfolderBase]: For 29795/29795 co-relation queries the response was YES. [2024-06-27 22:19:20,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8172 conditions, 1556 events. 796/1556 cut-off events. For 29795/29795 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8874 event pairs, 164 based on Foata normal form. 1/1500 useless extension candidates. Maximal degree in co-relation 8107. Up to 1097 conditions per place. [2024-06-27 22:19:20,545 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 55 changer transitions 0/208 dead transitions. [2024-06-27 22:19:20,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 208 transitions, 2430 flow [2024-06-27 22:19:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:19:20,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:19:20,547 INFO L175 Difference]: Start difference. First operand has 138 places, 180 transitions, 1726 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:19:20,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 208 transitions, 2430 flow [2024-06-27 22:19:20,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 208 transitions, 2280 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:20,581 INFO L231 Difference]: Finished difference. Result has 138 places, 189 transitions, 1866 flow [2024-06-27 22:19:20,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1866, PETRI_PLACES=138, PETRI_TRANSITIONS=189} [2024-06-27 22:19:20,582 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 22:19:20,582 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 189 transitions, 1866 flow [2024-06-27 22:19:20,582 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 22:19:20,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:20,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:19:20,582 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 22:19:20,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash 627713156, now seen corresponding path program 4 times [2024-06-27 22:19:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88035406] [2024-06-27 22:19:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88035406] [2024-06-27 22:19:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88035406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:21,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:21,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891788618] [2024-06-27 22:19:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:21,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:21,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:21,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 189 transitions, 1866 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 22:19:21,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:21,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:21,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,287 INFO L124 PetriNetUnfolderBase]: 873/1646 cut-off events. [2024-06-27 22:19:22,288 INFO L125 PetriNetUnfolderBase]: For 33996/33996 co-relation queries the response was YES. [2024-06-27 22:19:22,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9053 conditions, 1646 events. 873/1646 cut-off events. For 33996/33996 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9184 event pairs, 167 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 8987. Up to 1151 conditions per place. [2024-06-27 22:19:22,298 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 118 selfloop transitions, 95 changer transitions 0/221 dead transitions. [2024-06-27 22:19:22,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 221 transitions, 2796 flow [2024-06-27 22:19:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:19:22,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-27 22:19:22,299 INFO L175 Difference]: Start difference. First operand has 138 places, 189 transitions, 1866 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:19:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 221 transitions, 2796 flow [2024-06-27 22:19:22,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 221 transitions, 2709 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:22,342 INFO L231 Difference]: Finished difference. Result has 143 places, 201 transitions, 2237 flow [2024-06-27 22:19:22,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2237, PETRI_PLACES=143, PETRI_TRANSITIONS=201} [2024-06-27 22:19:22,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-27 22:19:22,343 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 201 transitions, 2237 flow [2024-06-27 22:19:22,343 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 22:19:22,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:22,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:22,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:19:22,344 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 22:19:22,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 637832796, now seen corresponding path program 3 times [2024-06-27 22:19:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928062821] [2024-06-27 22:19:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928062821] [2024-06-27 22:19:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928062821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:23,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:23,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649913849] [2024-06-27 22:19:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:23,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:23,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 201 transitions, 2237 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 22:19:23,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:23,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:23,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:24,070 INFO L124 PetriNetUnfolderBase]: 832/1610 cut-off events. [2024-06-27 22:19:24,070 INFO L125 PetriNetUnfolderBase]: For 35901/35901 co-relation queries the response was YES. [2024-06-27 22:19:24,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9053 conditions, 1610 events. 832/1610 cut-off events. For 35901/35901 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9170 event pairs, 164 based on Foata normal form. 1/1554 useless extension candidates. Maximal degree in co-relation 8985. Up to 1134 conditions per place. [2024-06-27 22:19:24,080 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 128 selfloop transitions, 61 changer transitions 0/223 dead transitions. [2024-06-27 22:19:24,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 223 transitions, 2855 flow [2024-06-27 22:19:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:19:24,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 22:19:24,081 INFO L175 Difference]: Start difference. First operand has 143 places, 201 transitions, 2237 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:19:24,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 223 transitions, 2855 flow [2024-06-27 22:19:24,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 223 transitions, 2725 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:24,131 INFO L231 Difference]: Finished difference. Result has 149 places, 204 transitions, 2287 flow [2024-06-27 22:19:24,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2287, PETRI_PLACES=149, PETRI_TRANSITIONS=204} [2024-06-27 22:19:24,132 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-06-27 22:19:24,132 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 204 transitions, 2287 flow [2024-06-27 22:19:24,133 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 22:19:24,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:24,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:24,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:19:24,133 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 22:19:24,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash 638188986, now seen corresponding path program 4 times [2024-06-27 22:19:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225037647] [2024-06-27 22:19:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:25,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225037647] [2024-06-27 22:19:25,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225037647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:25,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:25,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:25,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425245676] [2024-06-27 22:19:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:25,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:25,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:25,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 204 transitions, 2287 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 22:19:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:25,879 INFO L124 PetriNetUnfolderBase]: 830/1607 cut-off events. [2024-06-27 22:19:25,879 INFO L125 PetriNetUnfolderBase]: For 36335/36335 co-relation queries the response was YES. [2024-06-27 22:19:25,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9116 conditions, 1607 events. 830/1607 cut-off events. For 36335/36335 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9176 event pairs, 164 based on Foata normal form. 1/1551 useless extension candidates. Maximal degree in co-relation 9046. Up to 1132 conditions per place. [2024-06-27 22:19:25,889 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 65 changer transitions 0/222 dead transitions. [2024-06-27 22:19:25,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 222 transitions, 2787 flow [2024-06-27 22:19:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:19:25,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-27 22:19:25,890 INFO L175 Difference]: Start difference. First operand has 149 places, 204 transitions, 2287 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:19:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 222 transitions, 2787 flow [2024-06-27 22:19:25,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 222 transitions, 2604 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:25,951 INFO L231 Difference]: Finished difference. Result has 152 places, 204 transitions, 2240 flow [2024-06-27 22:19:25,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2240, PETRI_PLACES=152, PETRI_TRANSITIONS=204} [2024-06-27 22:19:25,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-27 22:19:25,952 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 204 transitions, 2240 flow [2024-06-27 22:19:25,952 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 22:19:25,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:25,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:25,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:19:25,953 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 22:19:25,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash 637832486, now seen corresponding path program 5 times [2024-06-27 22:19:25,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:25,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420416276] [2024-06-27 22:19:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:25,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:27,130 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 22:19:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420416276] [2024-06-27 22:19:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420416276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651432013] [2024-06-27 22:19:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:27,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:27,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 204 transitions, 2240 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 22:19:27,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:27,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:27,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:27,562 INFO L124 PetriNetUnfolderBase]: 877/1652 cut-off events. [2024-06-27 22:19:27,562 INFO L125 PetriNetUnfolderBase]: For 37484/37484 co-relation queries the response was YES. [2024-06-27 22:19:27,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9480 conditions, 1652 events. 877/1652 cut-off events. For 37484/37484 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9224 event pairs, 167 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 9409. Up to 1158 conditions per place. [2024-06-27 22:19:27,572 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 107 selfloop transitions, 107 changer transitions 0/222 dead transitions. [2024-06-27 22:19:27,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 222 transitions, 2794 flow [2024-06-27 22:19:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:19:27,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 22:19:27,573 INFO L175 Difference]: Start difference. First operand has 152 places, 204 transitions, 2240 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:19:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 222 transitions, 2794 flow [2024-06-27 22:19:27,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 222 transitions, 2639 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:27,633 INFO L231 Difference]: Finished difference. Result has 154 places, 204 transitions, 2305 flow [2024-06-27 22:19:27,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2305, PETRI_PLACES=154, PETRI_TRANSITIONS=204} [2024-06-27 22:19:27,634 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-27 22:19:27,634 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 204 transitions, 2305 flow [2024-06-27 22:19:27,634 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 22:19:27,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:27,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:27,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:19:27,634 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 22:19:27,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 627704786, now seen corresponding path program 6 times [2024-06-27 22:19:27,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395240556] [2024-06-27 22:19:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:28,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:28,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395240556] [2024-06-27 22:19:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395240556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:28,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745626110] [2024-06-27 22:19:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:28,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:28,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:28,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:28,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:28,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 204 transitions, 2305 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 22:19:28,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:28,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:28,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:29,307 INFO L124 PetriNetUnfolderBase]: 875/1649 cut-off events. [2024-06-27 22:19:29,308 INFO L125 PetriNetUnfolderBase]: For 38386/38386 co-relation queries the response was YES. [2024-06-27 22:19:29,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9544 conditions, 1649 events. 875/1649 cut-off events. For 38386/38386 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9206 event pairs, 167 based on Foata normal form. 1/1592 useless extension candidates. Maximal degree in co-relation 9472. Up to 1156 conditions per place. [2024-06-27 22:19:29,320 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 118 selfloop transitions, 96 changer transitions 0/222 dead transitions. [2024-06-27 22:19:29,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 222 transitions, 2861 flow [2024-06-27 22:19:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:19:29,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 22:19:29,322 INFO L175 Difference]: Start difference. First operand has 154 places, 204 transitions, 2305 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:19:29,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 222 transitions, 2861 flow [2024-06-27 22:19:29,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 222 transitions, 2621 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:29,380 INFO L231 Difference]: Finished difference. Result has 156 places, 204 transitions, 2263 flow [2024-06-27 22:19:29,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2263, PETRI_PLACES=156, PETRI_TRANSITIONS=204} [2024-06-27 22:19:29,381 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-27 22:19:29,381 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 204 transitions, 2263 flow [2024-06-27 22:19:29,382 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 22:19:29,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:29,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:29,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:19:29,382 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 22:19:29,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:29,382 INFO L85 PathProgramCache]: Analyzing trace with hash 627704538, now seen corresponding path program 4 times [2024-06-27 22:19:29,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243126095] [2024-06-27 22:19:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:30,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243126095] [2024-06-27 22:19:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243126095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:30,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:30,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738010064] [2024-06-27 22:19:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:30,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:30,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 204 transitions, 2263 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 22:19:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:30,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:31,126 INFO L124 PetriNetUnfolderBase]: 834/1615 cut-off events. [2024-06-27 22:19:31,127 INFO L125 PetriNetUnfolderBase]: For 39511/39511 co-relation queries the response was YES. [2024-06-27 22:19:31,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 1615 events. 834/1615 cut-off events. For 39511/39511 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9211 event pairs, 164 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 9208. Up to 1062 conditions per place. [2024-06-27 22:19:31,137 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 125 selfloop transitions, 81 changer transitions 0/228 dead transitions. [2024-06-27 22:19:31,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 228 transitions, 2941 flow [2024-06-27 22:19:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:19:31,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 22:19:31,138 INFO L175 Difference]: Start difference. First operand has 156 places, 204 transitions, 2263 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:19:31,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 228 transitions, 2941 flow [2024-06-27 22:19:31,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 2739 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:31,201 INFO L231 Difference]: Finished difference. Result has 157 places, 210 transitions, 2371 flow [2024-06-27 22:19:31,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2371, PETRI_PLACES=157, PETRI_TRANSITIONS=210} [2024-06-27 22:19:31,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-27 22:19:31,202 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 210 transitions, 2371 flow [2024-06-27 22:19:31,202 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 22:19:31,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:31,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:19:31,203 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 22:19:31,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1437344344, now seen corresponding path program 5 times [2024-06-27 22:19:31,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204238190] [2024-06-27 22:19:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:32,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:32,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204238190] [2024-06-27 22:19:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204238190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:32,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989130606] [2024-06-27 22:19:32,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:32,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:32,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:32,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:32,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:32,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:32,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 210 transitions, 2371 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 22:19:32,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:32,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:32,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:32,470 INFO L124 PetriNetUnfolderBase]: 859/1655 cut-off events. [2024-06-27 22:19:32,471 INFO L125 PetriNetUnfolderBase]: For 42398/42398 co-relation queries the response was YES. [2024-06-27 22:19:32,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9634 conditions, 1655 events. 859/1655 cut-off events. For 42398/42398 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9427 event pairs, 150 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 9560. Up to 1226 conditions per place. [2024-06-27 22:19:32,482 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 172 selfloop transitions, 55 changer transitions 0/249 dead transitions. [2024-06-27 22:19:32,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 249 transitions, 3081 flow [2024-06-27 22:19:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:19:32,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 22:19:32,483 INFO L175 Difference]: Start difference. First operand has 157 places, 210 transitions, 2371 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:19:32,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 249 transitions, 3081 flow [2024-06-27 22:19:32,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 249 transitions, 2967 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:32,552 INFO L231 Difference]: Finished difference. Result has 162 places, 223 transitions, 2581 flow [2024-06-27 22:19:32,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2581, PETRI_PLACES=162, PETRI_TRANSITIONS=223} [2024-06-27 22:19:32,553 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-27 22:19:32,553 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 223 transitions, 2581 flow [2024-06-27 22:19:32,553 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 22:19:32,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:32,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:32,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:19:32,553 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 22:19:32,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 76930002, now seen corresponding path program 6 times [2024-06-27 22:19:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980515335] [2024-06-27 22:19:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980515335] [2024-06-27 22:19:33,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980515335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:33,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:33,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526802278] [2024-06-27 22:19:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:33,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:33,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:33,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 223 transitions, 2581 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 22:19:33,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:33,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:34,059 INFO L124 PetriNetUnfolderBase]: 892/1706 cut-off events. [2024-06-27 22:19:34,059 INFO L125 PetriNetUnfolderBase]: For 44797/44797 co-relation queries the response was YES. [2024-06-27 22:19:34,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 1706 events. 892/1706 cut-off events. For 44797/44797 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9736 event pairs, 153 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 10186. Up to 1267 conditions per place. [2024-06-27 22:19:34,071 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 177 selfloop transitions, 67 changer transitions 0/266 dead transitions. [2024-06-27 22:19:34,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 266 transitions, 3475 flow [2024-06-27 22:19:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:19:34,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:19:34,072 INFO L175 Difference]: Start difference. First operand has 162 places, 223 transitions, 2581 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:19:34,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 266 transitions, 3475 flow [2024-06-27 22:19:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 266 transitions, 3175 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:34,165 INFO L231 Difference]: Finished difference. Result has 167 places, 242 transitions, 2795 flow [2024-06-27 22:19:34,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2795, PETRI_PLACES=167, PETRI_TRANSITIONS=242} [2024-06-27 22:19:34,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-27 22:19:34,166 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 242 transitions, 2795 flow [2024-06-27 22:19:34,166 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 22:19:34,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:34,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:34,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:19:34,167 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 22:19:34,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 81588372, now seen corresponding path program 7 times [2024-06-27 22:19:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148170396] [2024-06-27 22:19:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:35,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148170396] [2024-06-27 22:19:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148170396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:35,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808785054] [2024-06-27 22:19:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:35,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:35,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:35,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:35,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:35,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 242 transitions, 2795 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 22:19:35,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:35,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:35,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:35,594 INFO L124 PetriNetUnfolderBase]: 901/1720 cut-off events. [2024-06-27 22:19:35,594 INFO L125 PetriNetUnfolderBase]: For 46247/46247 co-relation queries the response was YES. [2024-06-27 22:19:35,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10389 conditions, 1720 events. 901/1720 cut-off events. For 46247/46247 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9816 event pairs, 151 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 10311. Up to 1250 conditions per place. [2024-06-27 22:19:35,606 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 166 selfloop transitions, 84 changer transitions 0/272 dead transitions. [2024-06-27 22:19:35,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 272 transitions, 3485 flow [2024-06-27 22:19:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:19:35,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 22:19:35,608 INFO L175 Difference]: Start difference. First operand has 167 places, 242 transitions, 2795 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:19:35,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 272 transitions, 3485 flow [2024-06-27 22:19:35,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 272 transitions, 3361 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:35,687 INFO L231 Difference]: Finished difference. Result has 171 places, 248 transitions, 2966 flow [2024-06-27 22:19:35,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2966, PETRI_PLACES=171, PETRI_TRANSITIONS=248} [2024-06-27 22:19:35,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-27 22:19:35,687 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 248 transitions, 2966 flow [2024-06-27 22:19:35,687 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 22:19:35,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:35,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:19:35,688 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 22:19:35,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash 244406262, now seen corresponding path program 7 times [2024-06-27 22:19:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538248367] [2024-06-27 22:19:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538248367] [2024-06-27 22:19:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538248367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184554586] [2024-06-27 22:19:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:36,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:36,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:36,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 248 transitions, 2966 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 22:19:36,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:37,224 INFO L124 PetriNetUnfolderBase]: 965/1792 cut-off events. [2024-06-27 22:19:37,224 INFO L125 PetriNetUnfolderBase]: For 48222/48222 co-relation queries the response was YES. [2024-06-27 22:19:37,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10882 conditions, 1792 events. 965/1792 cut-off events. For 48222/48222 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10113 event pairs, 162 based on Foata normal form. 1/1736 useless extension candidates. Maximal degree in co-relation 10804. Up to 1462 conditions per place. [2024-06-27 22:19:37,236 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 217 selfloop transitions, 53 changer transitions 0/278 dead transitions. [2024-06-27 22:19:37,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 278 transitions, 3675 flow [2024-06-27 22:19:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:19:37,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:19:37,239 INFO L175 Difference]: Start difference. First operand has 171 places, 248 transitions, 2966 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:19:37,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 278 transitions, 3675 flow [2024-06-27 22:19:37,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 278 transitions, 3448 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:37,338 INFO L231 Difference]: Finished difference. Result has 174 places, 254 transitions, 2951 flow [2024-06-27 22:19:37,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2951, PETRI_PLACES=174, PETRI_TRANSITIONS=254} [2024-06-27 22:19:37,338 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-27 22:19:37,338 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 254 transitions, 2951 flow [2024-06-27 22:19:37,339 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 22:19:37,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:37,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:19:37,339 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 22:19:37,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1699671900, now seen corresponding path program 8 times [2024-06-27 22:19:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20937057] [2024-06-27 22:19:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:37,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20937057] [2024-06-27 22:19:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20937057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568441790] [2024-06-27 22:19:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:38,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:38,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 254 transitions, 2951 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 22:19:38,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:38,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:38,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:38,946 INFO L124 PetriNetUnfolderBase]: 948/1788 cut-off events. [2024-06-27 22:19:38,947 INFO L125 PetriNetUnfolderBase]: For 50320/50324 co-relation queries the response was YES. [2024-06-27 22:19:38,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10877 conditions, 1788 events. 948/1788 cut-off events. For 50320/50324 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10176 event pairs, 161 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 10797. Up to 1339 conditions per place. [2024-06-27 22:19:38,960 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 196 selfloop transitions, 78 changer transitions 0/298 dead transitions. [2024-06-27 22:19:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 298 transitions, 3859 flow [2024-06-27 22:19:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:19:38,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:19:38,961 INFO L175 Difference]: Start difference. First operand has 174 places, 254 transitions, 2951 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:19:38,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 298 transitions, 3859 flow [2024-06-27 22:19:39,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 298 transitions, 3730 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:39,062 INFO L231 Difference]: Finished difference. Result has 177 places, 276 transitions, 3326 flow [2024-06-27 22:19:39,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3326, PETRI_PLACES=177, PETRI_TRANSITIONS=276} [2024-06-27 22:19:39,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-27 22:19:39,063 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 276 transitions, 3326 flow [2024-06-27 22:19:39,063 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 22:19:39,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:39,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:39,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:19:39,064 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 22:19:39,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1537024448, now seen corresponding path program 9 times [2024-06-27 22:19:39,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:39,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009372879] [2024-06-27 22:19:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:39,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009372879] [2024-06-27 22:19:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009372879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:40,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:40,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:40,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072302804] [2024-06-27 22:19:40,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:40,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:40,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:40,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:40,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:40,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 276 transitions, 3326 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 22:19:40,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:40,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:40,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:40,662 INFO L124 PetriNetUnfolderBase]: 963/1811 cut-off events. [2024-06-27 22:19:40,662 INFO L125 PetriNetUnfolderBase]: For 52813/52817 co-relation queries the response was YES. [2024-06-27 22:19:40,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11219 conditions, 1811 events. 963/1811 cut-off events. For 52813/52817 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10326 event pairs, 161 based on Foata normal form. 1/1754 useless extension candidates. Maximal degree in co-relation 11137. Up to 1337 conditions per place. [2024-06-27 22:19:40,674 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 190 selfloop transitions, 93 changer transitions 0/307 dead transitions. [2024-06-27 22:19:40,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 307 transitions, 4114 flow [2024-06-27 22:19:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:19:40,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 22:19:40,676 INFO L175 Difference]: Start difference. First operand has 177 places, 276 transitions, 3326 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:19:40,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 307 transitions, 4114 flow [2024-06-27 22:19:40,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 307 transitions, 3974 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:40,778 INFO L231 Difference]: Finished difference. Result has 182 places, 285 transitions, 3550 flow [2024-06-27 22:19:40,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3550, PETRI_PLACES=182, PETRI_TRANSITIONS=285} [2024-06-27 22:19:40,779 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-27 22:19:40,779 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 285 transitions, 3550 flow [2024-06-27 22:19:40,779 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 22:19:40,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:40,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:40,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:19:40,779 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 22:19:40,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1537024696, now seen corresponding path program 8 times [2024-06-27 22:19:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15055313] [2024-06-27 22:19:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:41,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15055313] [2024-06-27 22:19:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15055313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517942108] [2024-06-27 22:19:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:41,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:41,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 285 transitions, 3550 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 22:19:41,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:41,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:41,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:42,370 INFO L124 PetriNetUnfolderBase]: 1029/1887 cut-off events. [2024-06-27 22:19:42,370 INFO L125 PetriNetUnfolderBase]: For 55134/55134 co-relation queries the response was YES. [2024-06-27 22:19:42,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11748 conditions, 1887 events. 1029/1887 cut-off events. For 55134/55134 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10615 event pairs, 177 based on Foata normal form. 1/1831 useless extension candidates. Maximal degree in co-relation 11665. Up to 1557 conditions per place. [2024-06-27 22:19:42,385 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 55 changer transitions 0/316 dead transitions. [2024-06-27 22:19:42,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 316 transitions, 4370 flow [2024-06-27 22:19:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:19:42,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:19:42,386 INFO L175 Difference]: Start difference. First operand has 182 places, 285 transitions, 3550 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:19:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 316 transitions, 4370 flow [2024-06-27 22:19:42,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 316 transitions, 4122 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:42,504 INFO L231 Difference]: Finished difference. Result has 184 places, 294 transitions, 3572 flow [2024-06-27 22:19:42,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3572, PETRI_PLACES=184, PETRI_TRANSITIONS=294} [2024-06-27 22:19:42,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-27 22:19:42,505 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 294 transitions, 3572 flow [2024-06-27 22:19:42,505 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 22:19:42,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:42,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:42,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:19:42,506 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 22:19:42,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1542617468, now seen corresponding path program 10 times [2024-06-27 22:19:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948905619] [2024-06-27 22:19:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948905619] [2024-06-27 22:19:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948905619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:43,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031147404] [2024-06-27 22:19:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:43,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 294 transitions, 3572 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 22:19:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:44,158 INFO L124 PetriNetUnfolderBase]: 975/1833 cut-off events. [2024-06-27 22:19:44,159 INFO L125 PetriNetUnfolderBase]: For 55252/55256 co-relation queries the response was YES. [2024-06-27 22:19:44,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 1833 events. 975/1833 cut-off events. For 55252/55256 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10462 event pairs, 160 based on Foata normal form. 1/1775 useless extension candidates. Maximal degree in co-relation 11210. Up to 1283 conditions per place. [2024-06-27 22:19:44,172 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 161 selfloop transitions, 131 changer transitions 0/319 dead transitions. [2024-06-27 22:19:44,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 319 transitions, 4254 flow [2024-06-27 22:19:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:19:44,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:19:44,173 INFO L175 Difference]: Start difference. First operand has 184 places, 294 transitions, 3572 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:19:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 319 transitions, 4254 flow [2024-06-27 22:19:44,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 319 transitions, 4110 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:44,331 INFO L231 Difference]: Finished difference. Result has 186 places, 297 transitions, 3724 flow [2024-06-27 22:19:44,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3724, PETRI_PLACES=186, PETRI_TRANSITIONS=297} [2024-06-27 22:19:44,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-27 22:19:44,332 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 297 transitions, 3724 flow [2024-06-27 22:19:44,332 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 22:19:44,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:44,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:44,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:19:44,333 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 22:19:44,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1542617716, now seen corresponding path program 9 times [2024-06-27 22:19:44,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:44,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100746064] [2024-06-27 22:19:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:44,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:45,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100746064] [2024-06-27 22:19:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100746064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:45,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066772586] [2024-06-27 22:19:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:45,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 297 transitions, 3724 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 22:19:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:45,899 INFO L124 PetriNetUnfolderBase]: 1047/1915 cut-off events. [2024-06-27 22:19:45,899 INFO L125 PetriNetUnfolderBase]: For 57589/57589 co-relation queries the response was YES. [2024-06-27 22:19:45,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11978 conditions, 1915 events. 1047/1915 cut-off events. For 57589/57589 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10787 event pairs, 170 based on Foata normal form. 1/1858 useless extension candidates. Maximal degree in co-relation 11893. Up to 1513 conditions per place. [2024-06-27 22:19:45,912 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 233 selfloop transitions, 88 changer transitions 0/329 dead transitions. [2024-06-27 22:19:45,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 329 transitions, 4657 flow [2024-06-27 22:19:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:19:45,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 22:19:45,913 INFO L175 Difference]: Start difference. First operand has 186 places, 297 transitions, 3724 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:19:45,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 329 transitions, 4657 flow [2024-06-27 22:19:46,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 329 transitions, 4227 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:46,046 INFO L231 Difference]: Finished difference. Result has 188 places, 306 transitions, 3627 flow [2024-06-27 22:19:46,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3627, PETRI_PLACES=188, PETRI_TRANSITIONS=306} [2024-06-27 22:19:46,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-27 22:19:46,047 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 306 transitions, 3627 flow [2024-06-27 22:19:46,047 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 22:19:46,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:46,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:19:46,047 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 22:19:46,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1542626396, now seen corresponding path program 5 times [2024-06-27 22:19:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:46,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704705381] [2024-06-27 22:19:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:47,083 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 22:19:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704705381] [2024-06-27 22:19:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704705381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:47,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645698402] [2024-06-27 22:19:47,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:47,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:47,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:47,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:47,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:47,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:47,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 306 transitions, 3627 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 22:19:47,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:47,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:47,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:47,658 INFO L124 PetriNetUnfolderBase]: 987/1843 cut-off events. [2024-06-27 22:19:47,659 INFO L125 PetriNetUnfolderBase]: For 57663/57691 co-relation queries the response was YES. [2024-06-27 22:19:47,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11256 conditions, 1843 events. 987/1843 cut-off events. For 57663/57691 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10521 event pairs, 184 based on Foata normal form. 19/1802 useless extension candidates. Maximal degree in co-relation 11169. Up to 1432 conditions per place. [2024-06-27 22:19:47,672 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 36 changer transitions 0/331 dead transitions. [2024-06-27 22:19:47,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 331 transitions, 4309 flow [2024-06-27 22:19:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:19:47,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2024-06-27 22:19:47,674 INFO L175 Difference]: Start difference. First operand has 188 places, 306 transitions, 3627 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:19:47,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 331 transitions, 4309 flow [2024-06-27 22:19:47,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 331 transitions, 4003 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:47,788 INFO L231 Difference]: Finished difference. Result has 190 places, 309 transitions, 3433 flow [2024-06-27 22:19:47,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3433, PETRI_PLACES=190, PETRI_TRANSITIONS=309} [2024-06-27 22:19:47,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 22:19:47,788 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 309 transitions, 3433 flow [2024-06-27 22:19:47,788 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 22:19:47,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:47,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:47,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:19:47,789 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 22:19:47,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1542626086, now seen corresponding path program 10 times [2024-06-27 22:19:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69029392] [2024-06-27 22:19:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:48,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:48,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69029392] [2024-06-27 22:19:48,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69029392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:48,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362015027] [2024-06-27 22:19:48,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:48,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:48,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 309 transitions, 3433 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 22:19:48,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:48,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:48,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:49,409 INFO L124 PetriNetUnfolderBase]: 1047/1914 cut-off events. [2024-06-27 22:19:49,409 INFO L125 PetriNetUnfolderBase]: For 57027/57027 co-relation queries the response was YES. [2024-06-27 22:19:49,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1914 events. 1047/1914 cut-off events. For 57027/57027 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10742 event pairs, 170 based on Foata normal form. 1/1857 useless extension candidates. Maximal degree in co-relation 11504. Up to 1514 conditions per place. [2024-06-27 22:19:49,422 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 230 selfloop transitions, 93 changer transitions 0/331 dead transitions. [2024-06-27 22:19:49,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 331 transitions, 4159 flow [2024-06-27 22:19:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:19:49,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-06-27 22:19:49,423 INFO L175 Difference]: Start difference. First operand has 190 places, 309 transitions, 3433 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:19:49,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 331 transitions, 4159 flow [2024-06-27 22:19:49,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 331 transitions, 3961 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 22:19:49,541 INFO L231 Difference]: Finished difference. Result has 189 places, 309 transitions, 3431 flow [2024-06-27 22:19:49,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3431, PETRI_PLACES=189, PETRI_TRANSITIONS=309} [2024-06-27 22:19:49,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-27 22:19:49,542 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 309 transitions, 3431 flow [2024-06-27 22:19:49,542 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 22:19:49,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:49,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:19:49,542 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 22:19:49,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1146147530, now seen corresponding path program 1 times [2024-06-27 22:19:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734453239] [2024-06-27 22:19:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734453239] [2024-06-27 22:19:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734453239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:51,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:51,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237903045] [2024-06-27 22:19:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:51,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:51,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 309 transitions, 3431 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 22:19:51,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:51,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:51,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:51,829 INFO L124 PetriNetUnfolderBase]: 999/1868 cut-off events. [2024-06-27 22:19:51,829 INFO L125 PetriNetUnfolderBase]: For 57599/57614 co-relation queries the response was YES. [2024-06-27 22:19:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 1868 events. 999/1868 cut-off events. For 57599/57614 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10726 event pairs, 214 based on Foata normal form. 7/1810 useless extension candidates. Maximal degree in co-relation 11133. Up to 1447 conditions per place. [2024-06-27 22:19:51,844 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 274 selfloop transitions, 30 changer transitions 0/346 dead transitions. [2024-06-27 22:19:51,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 346 transitions, 4277 flow [2024-06-27 22:19:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:19:51,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 22:19:51,845 INFO L175 Difference]: Start difference. First operand has 189 places, 309 transitions, 3431 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:19:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 346 transitions, 4277 flow [2024-06-27 22:19:51,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 346 transitions, 4015 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:19:51,958 INFO L231 Difference]: Finished difference. Result has 193 places, 319 transitions, 3383 flow [2024-06-27 22:19:51,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3383, PETRI_PLACES=193, PETRI_TRANSITIONS=319} [2024-06-27 22:19:51,958 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-27 22:19:51,958 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 319 transitions, 3383 flow [2024-06-27 22:19:51,959 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 22:19:51,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:51,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:19:51,959 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 22:19:51,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2053780320, now seen corresponding path program 1 times [2024-06-27 22:19:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751125331] [2024-06-27 22:19:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:51,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751125331] [2024-06-27 22:19:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751125331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:53,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105674662] [2024-06-27 22:19:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:53,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:53,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 319 transitions, 3383 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 22:19:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:53,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:54,135 INFO L124 PetriNetUnfolderBase]: 1040/1890 cut-off events. [2024-06-27 22:19:54,135 INFO L125 PetriNetUnfolderBase]: For 61803/61827 co-relation queries the response was YES. [2024-06-27 22:19:54,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11754 conditions, 1890 events. 1040/1890 cut-off events. For 61803/61827 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10859 event pairs, 149 based on Foata normal form. 1/1837 useless extension candidates. Maximal degree in co-relation 11660. Up to 1388 conditions per place. [2024-06-27 22:19:54,149 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 274 selfloop transitions, 56 changer transitions 0/361 dead transitions. [2024-06-27 22:19:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 361 transitions, 4335 flow [2024-06-27 22:19:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:19:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:19:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:19:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:19:54,150 INFO L175 Difference]: Start difference. First operand has 193 places, 319 transitions, 3383 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:19:54,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 361 transitions, 4335 flow [2024-06-27 22:19:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 361 transitions, 4272 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:54,268 INFO L231 Difference]: Finished difference. Result has 205 places, 332 transitions, 3622 flow [2024-06-27 22:19:54,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3622, PETRI_PLACES=205, PETRI_TRANSITIONS=332} [2024-06-27 22:19:54,269 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-27 22:19:54,269 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 332 transitions, 3622 flow [2024-06-27 22:19:54,269 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 22:19:54,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:54,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:54,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:19:54,269 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 22:19:54,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1709887442, now seen corresponding path program 2 times [2024-06-27 22:19:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:54,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900843080] [2024-06-27 22:19:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:55,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:55,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900843080] [2024-06-27 22:19:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900843080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:55,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:55,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:55,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455421759] [2024-06-27 22:19:55,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:55,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:55,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:55,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:55,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:19:55,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 332 transitions, 3622 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 22:19:55,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:55,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:19:55,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:56,357 INFO L124 PetriNetUnfolderBase]: 1047/1955 cut-off events. [2024-06-27 22:19:56,357 INFO L125 PetriNetUnfolderBase]: For 64838/64862 co-relation queries the response was YES. [2024-06-27 22:19:56,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12250 conditions, 1955 events. 1047/1955 cut-off events. For 64838/64862 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11412 event pairs, 174 based on Foata normal form. 1/1891 useless extension candidates. Maximal degree in co-relation 12150. Up to 1416 conditions per place. [2024-06-27 22:19:56,369 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 255 selfloop transitions, 78 changer transitions 0/364 dead transitions. [2024-06-27 22:19:56,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 364 transitions, 4583 flow [2024-06-27 22:19:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:19:56,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-27 22:19:56,370 INFO L175 Difference]: Start difference. First operand has 205 places, 332 transitions, 3622 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:19:56,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 364 transitions, 4583 flow [2024-06-27 22:19:56,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 364 transitions, 4453 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:56,559 INFO L231 Difference]: Finished difference. Result has 215 places, 343 transitions, 3963 flow [2024-06-27 22:19:56,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3963, PETRI_PLACES=215, PETRI_TRANSITIONS=343} [2024-06-27 22:19:56,559 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-27 22:19:56,559 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 343 transitions, 3963 flow [2024-06-27 22:19:56,560 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 22:19:56,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:56,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:19:56,560 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 22:19:56,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1709887659, now seen corresponding path program 1 times [2024-06-27 22:19:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897141941] [2024-06-27 22:19:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:57,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:57,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897141941] [2024-06-27 22:19:57,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897141941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:57,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:57,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871080567] [2024-06-27 22:19:57,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:57,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:57,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:19:57,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 343 transitions, 3963 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 22:19:57,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:57,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:19:57,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:58,496 INFO L124 PetriNetUnfolderBase]: 1108/2038 cut-off events. [2024-06-27 22:19:58,496 INFO L125 PetriNetUnfolderBase]: For 68951/68951 co-relation queries the response was YES. [2024-06-27 22:19:58,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12996 conditions, 2038 events. 1108/2038 cut-off events. For 68951/68951 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11776 event pairs, 185 based on Foata normal form. 1/1976 useless extension candidates. Maximal degree in co-relation 12890. Up to 1631 conditions per place. [2024-06-27 22:19:58,513 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 280 selfloop transitions, 78 changer transitions 0/366 dead transitions. [2024-06-27 22:19:58,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 366 transitions, 4815 flow [2024-06-27 22:19:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:19:58,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 22:19:58,514 INFO L175 Difference]: Start difference. First operand has 215 places, 343 transitions, 3963 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:19:58,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 366 transitions, 4815 flow [2024-06-27 22:19:58,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 366 transitions, 4682 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:58,676 INFO L231 Difference]: Finished difference. Result has 221 places, 346 transitions, 4071 flow [2024-06-27 22:19:58,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3830, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4071, PETRI_PLACES=221, PETRI_TRANSITIONS=346} [2024-06-27 22:19:58,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-27 22:19:58,676 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 346 transitions, 4071 flow [2024-06-27 22:19:58,677 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 22:19:58,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:58,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:19:58,678 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 22:19:58,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1751555799, now seen corresponding path program 2 times [2024-06-27 22:19:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:58,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122064437] [2024-06-27 22:19:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122064437] [2024-06-27 22:19:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122064437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:59,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914363134] [2024-06-27 22:19:59,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:59,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:00,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:00,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 346 transitions, 4071 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 22:20:00,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:00,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:00,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:00,602 INFO L124 PetriNetUnfolderBase]: 1126/2065 cut-off events. [2024-06-27 22:20:00,602 INFO L125 PetriNetUnfolderBase]: For 73850/73850 co-relation queries the response was YES. [2024-06-27 22:20:00,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13502 conditions, 2065 events. 1126/2065 cut-off events. For 73850/73850 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11950 event pairs, 184 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 13393. Up to 1596 conditions per place. [2024-06-27 22:20:00,618 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 260 selfloop transitions, 105 changer transitions 0/373 dead transitions. [2024-06-27 22:20:00,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 373 transitions, 5129 flow [2024-06-27 22:20:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:20:00,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:20:00,620 INFO L175 Difference]: Start difference. First operand has 221 places, 346 transitions, 4071 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:20:00,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 373 transitions, 5129 flow [2024-06-27 22:20:00,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 373 transitions, 4914 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:00,796 INFO L231 Difference]: Finished difference. Result has 223 places, 352 transitions, 4232 flow [2024-06-27 22:20:00,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4232, PETRI_PLACES=223, PETRI_TRANSITIONS=352} [2024-06-27 22:20:00,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-27 22:20:00,797 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 352 transitions, 4232 flow [2024-06-27 22:20:00,797 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 22:20:00,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:00,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:00,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:20:00,798 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 22:20:00,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1887761866, now seen corresponding path program 1 times [2024-06-27 22:20:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:00,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65981755] [2024-06-27 22:20:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:01,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:01,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65981755] [2024-06-27 22:20:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65981755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:01,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877325428] [2024-06-27 22:20:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:02,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:02,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 352 transitions, 4232 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 22:20:02,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:02,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:02,763 INFO L124 PetriNetUnfolderBase]: 1134/2078 cut-off events. [2024-06-27 22:20:02,764 INFO L125 PetriNetUnfolderBase]: For 77818/77818 co-relation queries the response was YES. [2024-06-27 22:20:02,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13765 conditions, 2078 events. 1134/2078 cut-off events. For 77818/77818 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12040 event pairs, 179 based on Foata normal form. 1/2017 useless extension candidates. Maximal degree in co-relation 13656. Up to 1709 conditions per place. [2024-06-27 22:20:02,782 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 311 selfloop transitions, 56 changer transitions 0/375 dead transitions. [2024-06-27 22:20:02,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 375 transitions, 5108 flow [2024-06-27 22:20:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:20:02,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:20:02,784 INFO L175 Difference]: Start difference. First operand has 223 places, 352 transitions, 4232 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:20:02,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 375 transitions, 5108 flow [2024-06-27 22:20:02,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 375 transitions, 4910 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:02,983 INFO L231 Difference]: Finished difference. Result has 227 places, 355 transitions, 4232 flow [2024-06-27 22:20:02,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4232, PETRI_PLACES=227, PETRI_TRANSITIONS=355} [2024-06-27 22:20:02,984 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-27 22:20:02,984 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 355 transitions, 4232 flow [2024-06-27 22:20:02,984 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 22:20:02,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:02,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:20:02,985 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 22:20:02,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1887754147, now seen corresponding path program 3 times [2024-06-27 22:20:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939251935] [2024-06-27 22:20:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:04,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:04,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939251935] [2024-06-27 22:20:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939251935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:04,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:04,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152386366] [2024-06-27 22:20:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:04,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:04,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:04,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:04,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 355 transitions, 4232 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 22:20:04,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:04,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:04,965 INFO L124 PetriNetUnfolderBase]: 1132/2074 cut-off events. [2024-06-27 22:20:04,965 INFO L125 PetriNetUnfolderBase]: For 78670/78670 co-relation queries the response was YES. [2024-06-27 22:20:04,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13855 conditions, 2074 events. 1132/2074 cut-off events. For 78670/78670 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12028 event pairs, 181 based on Foata normal form. 1/2012 useless extension candidates. Maximal degree in co-relation 13744. Up to 1606 conditions per place. [2024-06-27 22:20:04,981 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 266 selfloop transitions, 101 changer transitions 0/375 dead transitions. [2024-06-27 22:20:04,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 375 transitions, 5036 flow [2024-06-27 22:20:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:20:04,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:20:04,983 INFO L175 Difference]: Start difference. First operand has 227 places, 355 transitions, 4232 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:20:04,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 375 transitions, 5036 flow [2024-06-27 22:20:05,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 375 transitions, 4834 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:05,229 INFO L231 Difference]: Finished difference. Result has 229 places, 355 transitions, 4240 flow [2024-06-27 22:20:05,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4030, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4240, PETRI_PLACES=229, PETRI_TRANSITIONS=355} [2024-06-27 22:20:05,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-27 22:20:05,230 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 355 transitions, 4240 flow [2024-06-27 22:20:05,230 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 22:20:05,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:05,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:20:05,230 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 22:20:05,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1887753930, now seen corresponding path program 3 times [2024-06-27 22:20:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265882139] [2024-06-27 22:20:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265882139] [2024-06-27 22:20:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265882139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:06,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324258442] [2024-06-27 22:20:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:06,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:06,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:06,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:20:06,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 355 transitions, 4240 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 22:20:06,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:06,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:20:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:07,485 INFO L124 PetriNetUnfolderBase]: 1087/2019 cut-off events. [2024-06-27 22:20:07,486 INFO L125 PetriNetUnfolderBase]: For 81349/81385 co-relation queries the response was YES. [2024-06-27 22:20:07,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 2019 events. 1087/2019 cut-off events. For 81349/81385 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11814 event pairs, 168 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 13493. Up to 1428 conditions per place. [2024-06-27 22:20:07,502 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 92 changer transitions 0/379 dead transitions. [2024-06-27 22:20:07,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 379 transitions, 5094 flow [2024-06-27 22:20:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 22:20:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-06-27 22:20:07,504 INFO L175 Difference]: Start difference. First operand has 229 places, 355 transitions, 4240 flow. Second operand 10 states and 189 transitions. [2024-06-27 22:20:07,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 379 transitions, 5094 flow [2024-06-27 22:20:07,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 379 transitions, 4859 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:07,716 INFO L231 Difference]: Finished difference. Result has 231 places, 358 transitions, 4289 flow [2024-06-27 22:20:07,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4289, PETRI_PLACES=231, PETRI_TRANSITIONS=358} [2024-06-27 22:20:07,717 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-27 22:20:07,717 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 358 transitions, 4289 flow [2024-06-27 22:20:07,717 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 22:20:07,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:07,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:07,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:20:07,718 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 22:20:07,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2061137767, now seen corresponding path program 4 times [2024-06-27 22:20:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:07,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190494909] [2024-06-27 22:20:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:07,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190494909] [2024-06-27 22:20:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190494909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989460121] [2024-06-27 22:20:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:09,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:09,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:09,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:09,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 358 transitions, 4289 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 22:20:09,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:09,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:09,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:09,815 INFO L124 PetriNetUnfolderBase]: 1158/2117 cut-off events. [2024-06-27 22:20:09,816 INFO L125 PetriNetUnfolderBase]: For 85395/85395 co-relation queries the response was YES. [2024-06-27 22:20:09,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14436 conditions, 2117 events. 1158/2117 cut-off events. For 85395/85395 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12312 event pairs, 155 based on Foata normal form. 1/2055 useless extension candidates. Maximal degree in co-relation 14323. Up to 1560 conditions per place. [2024-06-27 22:20:09,831 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 249 selfloop transitions, 128 changer transitions 0/385 dead transitions. [2024-06-27 22:20:09,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 385 transitions, 5403 flow [2024-06-27 22:20:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:20:09,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:20:09,833 INFO L175 Difference]: Start difference. First operand has 231 places, 358 transitions, 4289 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:20:09,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 385 transitions, 5403 flow [2024-06-27 22:20:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 385 transitions, 5154 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:10,028 INFO L231 Difference]: Finished difference. Result has 234 places, 364 transitions, 4481 flow [2024-06-27 22:20:10,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4040, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4481, PETRI_PLACES=234, PETRI_TRANSITIONS=364} [2024-06-27 22:20:10,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-27 22:20:10,029 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 364 transitions, 4481 flow [2024-06-27 22:20:10,029 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 22:20:10,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:10,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:20:10,029 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 22:20:10,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2061137550, now seen corresponding path program 4 times [2024-06-27 22:20:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:10,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124982138] [2024-06-27 22:20:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124982138] [2024-06-27 22:20:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124982138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:11,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250541529] [2024-06-27 22:20:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:11,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:20:11,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 364 transitions, 4481 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 22:20:11,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:11,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:20:11,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:12,422 INFO L124 PetriNetUnfolderBase]: 1117/2066 cut-off events. [2024-06-27 22:20:12,422 INFO L125 PetriNetUnfolderBase]: For 91080/91120 co-relation queries the response was YES. [2024-06-27 22:20:12,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 2066 events. 1117/2066 cut-off events. For 91080/91120 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12107 event pairs, 170 based on Foata normal form. 1/2002 useless extension candidates. Maximal degree in co-relation 14189. Up to 1422 conditions per place. [2024-06-27 22:20:12,440 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 247 selfloop transitions, 105 changer transitions 0/388 dead transitions. [2024-06-27 22:20:12,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 388 transitions, 5361 flow [2024-06-27 22:20:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:20:12,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:20:12,441 INFO L175 Difference]: Start difference. First operand has 234 places, 364 transitions, 4481 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:20:12,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 388 transitions, 5361 flow [2024-06-27 22:20:12,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 388 transitions, 5029 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:12,651 INFO L231 Difference]: Finished difference. Result has 237 places, 367 transitions, 4466 flow [2024-06-27 22:20:12,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4151, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4466, PETRI_PLACES=237, PETRI_TRANSITIONS=367} [2024-06-27 22:20:12,652 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-27 22:20:12,652 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 367 transitions, 4466 flow [2024-06-27 22:20:12,652 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 22:20:12,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:12,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:20:12,652 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 22:20:12,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1888218228, now seen corresponding path program 2 times [2024-06-27 22:20:12,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:12,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986843138] [2024-06-27 22:20:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:12,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:13,946 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 22:20:13,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:13,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986843138] [2024-06-27 22:20:13,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986843138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:13,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:13,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113540762] [2024-06-27 22:20:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:14,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:14,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 367 transitions, 4466 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 22:20:14,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:14,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:14,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:14,588 INFO L124 PetriNetUnfolderBase]: 1184/2161 cut-off events. [2024-06-27 22:20:14,589 INFO L125 PetriNetUnfolderBase]: For 95384/95384 co-relation queries the response was YES. [2024-06-27 22:20:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14963 conditions, 2161 events. 1184/2161 cut-off events. For 95384/95384 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12591 event pairs, 179 based on Foata normal form. 1/2100 useless extension candidates. Maximal degree in co-relation 14848. Up to 1699 conditions per place. [2024-06-27 22:20:14,607 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 294 selfloop transitions, 92 changer transitions 0/394 dead transitions. [2024-06-27 22:20:14,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 394 transitions, 5594 flow [2024-06-27 22:20:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:14,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:20:14,609 INFO L175 Difference]: Start difference. First operand has 237 places, 367 transitions, 4466 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 394 transitions, 5594 flow [2024-06-27 22:20:14,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 394 transitions, 5334 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:14,864 INFO L231 Difference]: Finished difference. Result has 239 places, 373 transitions, 4567 flow [2024-06-27 22:20:14,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4567, PETRI_PLACES=239, PETRI_TRANSITIONS=373} [2024-06-27 22:20:14,865 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-27 22:20:14,865 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 373 transitions, 4567 flow [2024-06-27 22:20:14,865 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 22:20:14,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:14,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:20:14,866 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 22:20:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2061414597, now seen corresponding path program 1 times [2024-06-27 22:20:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175465618] [2024-06-27 22:20:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:14,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:16,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175465618] [2024-06-27 22:20:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175465618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:16,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:16,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:16,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006922958] [2024-06-27 22:20:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:16,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:16,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:16,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:16,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:20:16,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 373 transitions, 4567 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 22:20:16,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:16,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:20:16,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:16,669 INFO L124 PetriNetUnfolderBase]: 1028/1957 cut-off events. [2024-06-27 22:20:16,670 INFO L125 PetriNetUnfolderBase]: For 99022/99059 co-relation queries the response was YES. [2024-06-27 22:20:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13501 conditions, 1957 events. 1028/1957 cut-off events. For 99022/99059 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11836 event pairs, 262 based on Foata normal form. 24/1911 useless extension candidates. Maximal degree in co-relation 13385. Up to 1473 conditions per place. [2024-06-27 22:20:16,686 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 294 selfloop transitions, 45 changer transitions 0/392 dead transitions. [2024-06-27 22:20:16,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 392 transitions, 5359 flow [2024-06-27 22:20:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:16,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:20:16,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:20:16,687 INFO L175 Difference]: Start difference. First operand has 239 places, 373 transitions, 4567 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:20:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 392 transitions, 5359 flow [2024-06-27 22:20:16,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 392 transitions, 5161 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:16,929 INFO L231 Difference]: Finished difference. Result has 242 places, 376 transitions, 4551 flow [2024-06-27 22:20:16,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4551, PETRI_PLACES=242, PETRI_TRANSITIONS=376} [2024-06-27 22:20:16,929 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-27 22:20:16,930 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 376 transitions, 4551 flow [2024-06-27 22:20:16,930 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 22:20:16,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:16,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:20:16,930 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 22:20:16,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2061145207, now seen corresponding path program 5 times [2024-06-27 22:20:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963343535] [2024-06-27 22:20:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963343535] [2024-06-27 22:20:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963343535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:18,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:18,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275640453] [2024-06-27 22:20:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:18,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:18,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 376 transitions, 4551 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 22:20:18,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:18,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:18,929 INFO L124 PetriNetUnfolderBase]: 1200/2184 cut-off events. [2024-06-27 22:20:18,929 INFO L125 PetriNetUnfolderBase]: For 101874/101874 co-relation queries the response was YES. [2024-06-27 22:20:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15355 conditions, 2184 events. 1200/2184 cut-off events. For 101874/101874 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12719 event pairs, 180 based on Foata normal form. 1/2122 useless extension candidates. Maximal degree in co-relation 15238. Up to 1620 conditions per place. [2024-06-27 22:20:18,948 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 263 selfloop transitions, 129 changer transitions 0/400 dead transitions. [2024-06-27 22:20:18,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 400 transitions, 5591 flow [2024-06-27 22:20:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:20:18,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:20:18,950 INFO L175 Difference]: Start difference. First operand has 242 places, 376 transitions, 4551 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:20:18,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 400 transitions, 5591 flow [2024-06-27 22:20:19,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 400 transitions, 5435 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:19,229 INFO L231 Difference]: Finished difference. Result has 246 places, 379 transitions, 4720 flow [2024-06-27 22:20:19,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4720, PETRI_PLACES=246, PETRI_TRANSITIONS=379} [2024-06-27 22:20:19,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-27 22:20:19,230 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 379 transitions, 4720 flow [2024-06-27 22:20:19,230 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 22:20:19,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:19,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:20:19,231 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 22:20:19,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1744405680, now seen corresponding path program 3 times [2024-06-27 22:20:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444747429] [2024-06-27 22:20:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:20,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444747429] [2024-06-27 22:20:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444747429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238059412] [2024-06-27 22:20:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:20,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:20,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 379 transitions, 4720 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 22:20:20,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:20,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:20,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:21,268 INFO L124 PetriNetUnfolderBase]: 1208/2197 cut-off events. [2024-06-27 22:20:21,268 INFO L125 PetriNetUnfolderBase]: For 105079/105079 co-relation queries the response was YES. [2024-06-27 22:20:21,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 2197 events. 1208/2197 cut-off events. For 105079/105079 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12787 event pairs, 176 based on Foata normal form. 1/2136 useless extension candidates. Maximal degree in co-relation 15489. Up to 1732 conditions per place. [2024-06-27 22:20:21,288 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 308 selfloop transitions, 87 changer transitions 0/403 dead transitions. [2024-06-27 22:20:21,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 403 transitions, 5768 flow [2024-06-27 22:20:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:20:21,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 22:20:21,289 INFO L175 Difference]: Start difference. First operand has 246 places, 379 transitions, 4720 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:20:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 403 transitions, 5768 flow [2024-06-27 22:20:21,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 403 transitions, 5488 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:21,610 INFO L231 Difference]: Finished difference. Result has 248 places, 382 transitions, 4681 flow [2024-06-27 22:20:21,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4681, PETRI_PLACES=248, PETRI_TRANSITIONS=382} [2024-06-27 22:20:21,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-27 22:20:21,611 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 382 transitions, 4681 flow [2024-06-27 22:20:21,611 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 22:20:21,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:21,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:21,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:20:21,611 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 22:20:21,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1744146489, now seen corresponding path program 6 times [2024-06-27 22:20:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375914528] [2024-06-27 22:20:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375914528] [2024-06-27 22:20:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375914528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:22,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267542320] [2024-06-27 22:20:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:22,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:22,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 382 transitions, 4681 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 22:20:22,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:22,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:22,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:23,545 INFO L124 PetriNetUnfolderBase]: 1206/2193 cut-off events. [2024-06-27 22:20:23,545 INFO L125 PetriNetUnfolderBase]: For 105262/105262 co-relation queries the response was YES. [2024-06-27 22:20:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15456 conditions, 2193 events. 1206/2193 cut-off events. For 105262/105262 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12748 event pairs, 180 based on Foata normal form. 1/2131 useless extension candidates. Maximal degree in co-relation 15336. Up to 1630 conditions per place. [2024-06-27 22:20:23,564 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 255 selfloop transitions, 139 changer transitions 0/402 dead transitions. [2024-06-27 22:20:23,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 402 transitions, 5543 flow [2024-06-27 22:20:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:20:23,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:20:23,566 INFO L175 Difference]: Start difference. First operand has 248 places, 382 transitions, 4681 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:20:23,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 402 transitions, 5543 flow [2024-06-27 22:20:23,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 402 transitions, 5304 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:23,909 INFO L231 Difference]: Finished difference. Result has 252 places, 382 transitions, 4727 flow [2024-06-27 22:20:23,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4442, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4727, PETRI_PLACES=252, PETRI_TRANSITIONS=382} [2024-06-27 22:20:23,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-27 22:20:23,910 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 382 transitions, 4727 flow [2024-06-27 22:20:23,910 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 22:20:23,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:23,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:23,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:20:23,910 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 22:20:23,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2061404956, now seen corresponding path program 4 times [2024-06-27 22:20:23,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:23,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007112629] [2024-06-27 22:20:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:25,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:25,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007112629] [2024-06-27 22:20:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007112629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:25,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970017990] [2024-06-27 22:20:25,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:25,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:25,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 382 transitions, 4727 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 22:20:25,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:25,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:25,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:25,828 INFO L124 PetriNetUnfolderBase]: 1204/2191 cut-off events. [2024-06-27 22:20:25,828 INFO L125 PetriNetUnfolderBase]: For 105348/105348 co-relation queries the response was YES. [2024-06-27 22:20:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15459 conditions, 2191 events. 1204/2191 cut-off events. For 105348/105348 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12747 event pairs, 176 based on Foata normal form. 1/2130 useless extension candidates. Maximal degree in co-relation 15338. Up to 1727 conditions per place. [2024-06-27 22:20:25,846 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 304 selfloop transitions, 90 changer transitions 0/402 dead transitions. [2024-06-27 22:20:25,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 402 transitions, 5589 flow [2024-06-27 22:20:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:25,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 22:20:25,848 INFO L175 Difference]: Start difference. First operand has 252 places, 382 transitions, 4727 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:25,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 402 transitions, 5589 flow [2024-06-27 22:20:26,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 402 transitions, 5225 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 22:20:26,181 INFO L231 Difference]: Finished difference. Result has 251 places, 382 transitions, 4550 flow [2024-06-27 22:20:26,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4550, PETRI_PLACES=251, PETRI_TRANSITIONS=382} [2024-06-27 22:20:26,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-27 22:20:26,182 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 382 transitions, 4550 flow [2024-06-27 22:20:26,182 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 22:20:26,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:26,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:20:26,183 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 22:20:26,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2015718608, now seen corresponding path program 5 times [2024-06-27 22:20:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:26,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099664467] [2024-06-27 22:20:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099664467] [2024-06-27 22:20:27,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099664467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:27,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:27,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61535592] [2024-06-27 22:20:27,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:27,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:27,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:27,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 382 transitions, 4550 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 22:20:27,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:27,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:27,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:28,234 INFO L124 PetriNetUnfolderBase]: 1232/2233 cut-off events. [2024-06-27 22:20:28,234 INFO L125 PetriNetUnfolderBase]: For 112550/112550 co-relation queries the response was YES. [2024-06-27 22:20:28,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15825 conditions, 2233 events. 1232/2233 cut-off events. For 112550/112550 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13010 event pairs, 182 based on Foata normal form. 1/2172 useless extension candidates. Maximal degree in co-relation 15703. Up to 1541 conditions per place. [2024-06-27 22:20:28,252 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 269 selfloop transitions, 140 changer transitions 0/417 dead transitions. [2024-06-27 22:20:28,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 417 transitions, 6196 flow [2024-06-27 22:20:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:20:28,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 22:20:28,254 INFO L175 Difference]: Start difference. First operand has 251 places, 382 transitions, 4550 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:20:28,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 417 transitions, 6196 flow [2024-06-27 22:20:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 417 transitions, 5975 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:28,599 INFO L231 Difference]: Finished difference. Result has 251 places, 394 transitions, 4981 flow [2024-06-27 22:20:28,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4329, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4981, PETRI_PLACES=251, PETRI_TRANSITIONS=394} [2024-06-27 22:20:28,600 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-27 22:20:28,600 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 394 transitions, 4981 flow [2024-06-27 22:20:28,601 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 22:20:28,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:28,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:28,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:20:28,601 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 22:20:28,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1495975191, now seen corresponding path program 2 times [2024-06-27 22:20:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102716005] [2024-06-27 22:20:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:29,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:29,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102716005] [2024-06-27 22:20:29,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102716005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:29,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:29,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584186671] [2024-06-27 22:20:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:29,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:30,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:20:30,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 394 transitions, 4981 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 22:20:30,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:30,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:20:30,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:30,574 INFO L124 PetriNetUnfolderBase]: 1101/2114 cut-off events. [2024-06-27 22:20:30,574 INFO L125 PetriNetUnfolderBase]: For 117537/117546 co-relation queries the response was YES. [2024-06-27 22:20:30,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14959 conditions, 2114 events. 1101/2114 cut-off events. For 117537/117546 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13153 event pairs, 206 based on Foata normal form. 7/2042 useless extension candidates. Maximal degree in co-relation 14836. Up to 1434 conditions per place. [2024-06-27 22:20:30,591 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 325 selfloop transitions, 50 changer transitions 0/433 dead transitions. [2024-06-27 22:20:30,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 433 transitions, 6317 flow [2024-06-27 22:20:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 22:20:30,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352564102564102 [2024-06-27 22:20:30,592 INFO L175 Difference]: Start difference. First operand has 251 places, 394 transitions, 4981 flow. Second operand 8 states and 167 transitions. [2024-06-27 22:20:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 433 transitions, 6317 flow [2024-06-27 22:20:30,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 433 transitions, 6113 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-27 22:20:30,902 INFO L231 Difference]: Finished difference. Result has 260 places, 406 transitions, 5145 flow [2024-06-27 22:20:30,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4787, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5145, PETRI_PLACES=260, PETRI_TRANSITIONS=406} [2024-06-27 22:20:30,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-27 22:20:30,903 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 406 transitions, 5145 flow [2024-06-27 22:20:30,903 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 22:20:30,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:30,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:20:30,903 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:30,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1495984832, now seen corresponding path program 6 times [2024-06-27 22:20:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638205513] [2024-06-27 22:20:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638205513] [2024-06-27 22:20:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638205513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:32,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:32,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:32,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525183997] [2024-06-27 22:20:32,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:32,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:32,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:32,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:32,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 406 transitions, 5145 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 22:20:32,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:32,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:32,912 INFO L124 PetriNetUnfolderBase]: 1281/2340 cut-off events. [2024-06-27 22:20:32,912 INFO L125 PetriNetUnfolderBase]: For 120623/120623 co-relation queries the response was YES. [2024-06-27 22:20:32,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17050 conditions, 2340 events. 1281/2340 cut-off events. For 120623/120623 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13923 event pairs, 186 based on Foata normal form. 1/2272 useless extension candidates. Maximal degree in co-relation 16922. Up to 1617 conditions per place. [2024-06-27 22:20:32,935 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 282 selfloop transitions, 142 changer transitions 0/432 dead transitions. [2024-06-27 22:20:32,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 432 transitions, 6535 flow [2024-06-27 22:20:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:20:32,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 22:20:32,936 INFO L175 Difference]: Start difference. First operand has 260 places, 406 transitions, 5145 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:20:32,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 432 transitions, 6535 flow [2024-06-27 22:20:33,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 432 transitions, 6462 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 22:20:33,305 INFO L231 Difference]: Finished difference. Result has 268 places, 409 transitions, 5424 flow [2024-06-27 22:20:33,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5072, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5424, PETRI_PLACES=268, PETRI_TRANSITIONS=409} [2024-06-27 22:20:33,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-27 22:20:33,305 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 409 transitions, 5424 flow [2024-06-27 22:20:33,306 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 22:20:33,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:33,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:20:33,306 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 22:20:33,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2070105130, now seen corresponding path program 7 times [2024-06-27 22:20:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:33,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91217866] [2024-06-27 22:20:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91217866] [2024-06-27 22:20:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91217866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:34,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:34,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733037490] [2024-06-27 22:20:34,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:34,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:34,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:34,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:34,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 409 transitions, 5424 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 22:20:34,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:34,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:34,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:35,426 INFO L124 PetriNetUnfolderBase]: 1279/2337 cut-off events. [2024-06-27 22:20:35,426 INFO L125 PetriNetUnfolderBase]: For 121476/121476 co-relation queries the response was YES. [2024-06-27 22:20:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17265 conditions, 2337 events. 1279/2337 cut-off events. For 121476/121476 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13955 event pairs, 186 based on Foata normal form. 1/2269 useless extension candidates. Maximal degree in co-relation 17134. Up to 1615 conditions per place. [2024-06-27 22:20:35,450 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 278 selfloop transitions, 145 changer transitions 0/431 dead transitions. [2024-06-27 22:20:35,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 431 transitions, 6620 flow [2024-06-27 22:20:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:20:35,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:20:35,451 INFO L175 Difference]: Start difference. First operand has 268 places, 409 transitions, 5424 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:20:35,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 431 transitions, 6620 flow [2024-06-27 22:20:35,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 431 transitions, 6360 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:36,001 INFO L231 Difference]: Finished difference. Result has 274 places, 409 transitions, 5460 flow [2024-06-27 22:20:36,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5460, PETRI_PLACES=274, PETRI_TRANSITIONS=409} [2024-06-27 22:20:36,002 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-06-27 22:20:36,002 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 409 transitions, 5460 flow [2024-06-27 22:20:36,003 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 22:20:36,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:36,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:36,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:20:36,003 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 22:20:36,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2015995314, now seen corresponding path program 5 times [2024-06-27 22:20:36,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:36,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422069889] [2024-06-27 22:20:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:36,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:37,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422069889] [2024-06-27 22:20:37,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422069889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:37,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:37,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873789478] [2024-06-27 22:20:37,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:37,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:37,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:37,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:20:37,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 409 transitions, 5460 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 22:20:37,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:37,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:20:37,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:38,233 INFO L124 PetriNetUnfolderBase]: 1219/2261 cut-off events. [2024-06-27 22:20:38,233 INFO L125 PetriNetUnfolderBase]: For 125812/125848 co-relation queries the response was YES. [2024-06-27 22:20:38,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16921 conditions, 2261 events. 1219/2261 cut-off events. For 125812/125848 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13582 event pairs, 185 based on Foata normal form. 1/2189 useless extension candidates. Maximal degree in co-relation 16789. Up to 1421 conditions per place. [2024-06-27 22:20:38,257 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 252 selfloop transitions, 146 changer transitions 0/436 dead transitions. [2024-06-27 22:20:38,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 436 transitions, 6680 flow [2024-06-27 22:20:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 22:20:38,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-06-27 22:20:38,259 INFO L175 Difference]: Start difference. First operand has 274 places, 409 transitions, 5460 flow. Second operand 10 states and 188 transitions. [2024-06-27 22:20:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 436 transitions, 6680 flow [2024-06-27 22:20:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 436 transitions, 6380 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:20:38,639 INFO L231 Difference]: Finished difference. Result has 275 places, 415 transitions, 5672 flow [2024-06-27 22:20:38,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5160, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5672, PETRI_PLACES=275, PETRI_TRANSITIONS=415} [2024-06-27 22:20:38,640 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-27 22:20:38,640 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 415 transitions, 5672 flow [2024-06-27 22:20:38,640 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 22:20:38,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:38,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:20:38,640 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 22:20:38,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1702028678, now seen corresponding path program 8 times [2024-06-27 22:20:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133792648] [2024-06-27 22:20:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:39,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133792648] [2024-06-27 22:20:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133792648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583186900] [2024-06-27 22:20:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:40,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:40,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 415 transitions, 5672 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 22:20:40,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:40,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:40,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:40,682 INFO L124 PetriNetUnfolderBase]: 1295/2361 cut-off events. [2024-06-27 22:20:40,682 INFO L125 PetriNetUnfolderBase]: For 129498/129498 co-relation queries the response was YES. [2024-06-27 22:20:40,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17646 conditions, 2361 events. 1295/2361 cut-off events. For 129498/129498 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14060 event pairs, 186 based on Foata normal form. 1/2293 useless extension candidates. Maximal degree in co-relation 17513. Up to 1636 conditions per place. [2024-06-27 22:20:40,704 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 274 selfloop transitions, 158 changer transitions 0/440 dead transitions. [2024-06-27 22:20:40,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 440 transitions, 6968 flow [2024-06-27 22:20:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:20:40,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:20:40,705 INFO L175 Difference]: Start difference. First operand has 275 places, 415 transitions, 5672 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:20:40,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 440 transitions, 6968 flow [2024-06-27 22:20:41,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 440 transitions, 6794 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:41,181 INFO L231 Difference]: Finished difference. Result has 278 places, 418 transitions, 5894 flow [2024-06-27 22:20:41,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5894, PETRI_PLACES=278, PETRI_TRANSITIONS=418} [2024-06-27 22:20:41,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-27 22:20:41,182 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 418 transitions, 5894 flow [2024-06-27 22:20:41,182 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 22:20:41,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:41,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:41,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:20:41,182 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 22:20:41,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1496244581, now seen corresponding path program 7 times [2024-06-27 22:20:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997054547] [2024-06-27 22:20:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997054547] [2024-06-27 22:20:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997054547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:42,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528308814] [2024-06-27 22:20:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:42,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:42,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:42,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 418 transitions, 5894 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 22:20:42,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:42,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:42,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:43,300 INFO L124 PetriNetUnfolderBase]: 1323/2402 cut-off events. [2024-06-27 22:20:43,300 INFO L125 PetriNetUnfolderBase]: For 136818/136818 co-relation queries the response was YES. [2024-06-27 22:20:43,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18449 conditions, 2402 events. 1323/2402 cut-off events. For 136818/136818 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14291 event pairs, 193 based on Foata normal form. 1/2333 useless extension candidates. Maximal degree in co-relation 18314. Up to 1537 conditions per place. [2024-06-27 22:20:43,324 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 192 changer transitions 0/453 dead transitions. [2024-06-27 22:20:43,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 453 transitions, 7664 flow [2024-06-27 22:20:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:20:43,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:20:43,326 INFO L175 Difference]: Start difference. First operand has 278 places, 418 transitions, 5894 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:20:43,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 453 transitions, 7664 flow [2024-06-27 22:20:43,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 453 transitions, 7302 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:20:43,853 INFO L231 Difference]: Finished difference. Result has 280 places, 430 transitions, 6304 flow [2024-06-27 22:20:43,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5532, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6304, PETRI_PLACES=280, PETRI_TRANSITIONS=430} [2024-06-27 22:20:43,853 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-27 22:20:43,854 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 430 transitions, 6304 flow [2024-06-27 22:20:43,854 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 22:20:43,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:43,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:43,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:20:43,854 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 22:20:43,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1496252021, now seen corresponding path program 8 times [2024-06-27 22:20:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:43,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331513858] [2024-06-27 22:20:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:43,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331513858] [2024-06-27 22:20:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331513858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:45,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459587532] [2024-06-27 22:20:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:45,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:45,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 430 transitions, 6304 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 22:20:45,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:45,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:45,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:45,925 INFO L124 PetriNetUnfolderBase]: 1321/2399 cut-off events. [2024-06-27 22:20:45,925 INFO L125 PetriNetUnfolderBase]: For 138447/138447 co-relation queries the response was YES. [2024-06-27 22:20:45,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18505 conditions, 2399 events. 1321/2399 cut-off events. For 138447/138447 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14259 event pairs, 193 based on Foata normal form. 1/2330 useless extension candidates. Maximal degree in co-relation 18369. Up to 1535 conditions per place. [2024-06-27 22:20:45,948 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 250 selfloop transitions, 194 changer transitions 0/452 dead transitions. [2024-06-27 22:20:45,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 452 transitions, 7558 flow [2024-06-27 22:20:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:20:45,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:20:45,949 INFO L175 Difference]: Start difference. First operand has 280 places, 430 transitions, 6304 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:20:45,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 452 transitions, 7558 flow [2024-06-27 22:20:46,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 452 transitions, 7288 flow, removed 99 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:46,585 INFO L231 Difference]: Finished difference. Result has 286 places, 430 transitions, 6428 flow [2024-06-27 22:20:46,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6428, PETRI_PLACES=286, PETRI_TRANSITIONS=430} [2024-06-27 22:20:46,585 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-27 22:20:46,585 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 430 transitions, 6428 flow [2024-06-27 22:20:46,585 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 22:20:46,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:46,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:46,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:20:46,586 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 22:20:46,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1495985111, now seen corresponding path program 9 times [2024-06-27 22:20:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496874634] [2024-06-27 22:20:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:46,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:47,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496874634] [2024-06-27 22:20:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496874634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:47,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795680001] [2024-06-27 22:20:47,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:47,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:47,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:47,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:48,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:48,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 430 transitions, 6428 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 22:20:48,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:48,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:48,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:48,809 INFO L124 PetriNetUnfolderBase]: 1329/2411 cut-off events. [2024-06-27 22:20:48,809 INFO L125 PetriNetUnfolderBase]: For 140758/140758 co-relation queries the response was YES. [2024-06-27 22:20:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18877 conditions, 2411 events. 1329/2411 cut-off events. For 140758/140758 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14350 event pairs, 193 based on Foata normal form. 1/2342 useless extension candidates. Maximal degree in co-relation 18739. Up to 1544 conditions per place. [2024-06-27 22:20:48,833 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 194 changer transitions 0/455 dead transitions. [2024-06-27 22:20:48,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 455 transitions, 7772 flow [2024-06-27 22:20:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:20:48,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:20:48,835 INFO L175 Difference]: Start difference. First operand has 286 places, 430 transitions, 6428 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:20:48,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 455 transitions, 7772 flow [2024-06-27 22:20:49,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 455 transitions, 7494 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:49,391 INFO L231 Difference]: Finished difference. Result has 289 places, 433 transitions, 6624 flow [2024-06-27 22:20:49,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6161, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6624, PETRI_PLACES=289, PETRI_TRANSITIONS=433} [2024-06-27 22:20:49,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-27 22:20:49,391 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 433 transitions, 6624 flow [2024-06-27 22:20:49,391 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 22:20:49,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:49,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:49,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:20:49,392 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 22:20:49,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1182275961, now seen corresponding path program 3 times [2024-06-27 22:20:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:49,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492141975] [2024-06-27 22:20:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:50,604 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 22:20:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492141975] [2024-06-27 22:20:50,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492141975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:50,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:50,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:50,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662300772] [2024-06-27 22:20:50,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:50,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:50,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:50,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:20:50,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 433 transitions, 6624 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 22:20:50,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:50,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:20:50,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:51,258 INFO L124 PetriNetUnfolderBase]: 1151/2200 cut-off events. [2024-06-27 22:20:51,258 INFO L125 PetriNetUnfolderBase]: For 144776/144785 co-relation queries the response was YES. [2024-06-27 22:20:51,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17203 conditions, 2200 events. 1151/2200 cut-off events. For 144776/144785 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13753 event pairs, 196 based on Foata normal form. 7/2125 useless extension candidates. Maximal degree in co-relation 17064. Up to 1500 conditions per place. [2024-06-27 22:20:51,280 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 349 selfloop transitions, 59 changer transitions 0/468 dead transitions. [2024-06-27 22:20:51,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 468 transitions, 8043 flow [2024-06-27 22:20:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:20:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:20:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-27 22:20:51,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2024-06-27 22:20:51,281 INFO L175 Difference]: Start difference. First operand has 289 places, 433 transitions, 6624 flow. Second operand 8 states and 166 transitions. [2024-06-27 22:20:51,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 468 transitions, 8043 flow [2024-06-27 22:20:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 468 transitions, 7621 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:51,757 INFO L231 Difference]: Finished difference. Result has 294 places, 442 transitions, 6576 flow [2024-06-27 22:20:51,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6202, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6576, PETRI_PLACES=294, PETRI_TRANSITIONS=442} [2024-06-27 22:20:51,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 22:20:51,758 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 442 transitions, 6576 flow [2024-06-27 22:20:51,758 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 22:20:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:51,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:20:51,759 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 22:20:51,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1182276302, now seen corresponding path program 9 times [2024-06-27 22:20:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964841741] [2024-06-27 22:20:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964841741] [2024-06-27 22:20:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964841741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82861335] [2024-06-27 22:20:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:53,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:53,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 442 transitions, 6576 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 22:20:53,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:53,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:53,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:53,983 INFO L124 PetriNetUnfolderBase]: 1351/2454 cut-off events. [2024-06-27 22:20:53,983 INFO L125 PetriNetUnfolderBase]: For 148825/148825 co-relation queries the response was YES. [2024-06-27 22:20:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19308 conditions, 2454 events. 1351/2454 cut-off events. For 148825/148825 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14660 event pairs, 186 based on Foata normal form. 1/2384 useless extension candidates. Maximal degree in co-relation 19165. Up to 1718 conditions per place. [2024-06-27 22:20:54,085 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 299 selfloop transitions, 160 changer transitions 0/467 dead transitions. [2024-06-27 22:20:54,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 467 transitions, 7934 flow [2024-06-27 22:20:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:20:54,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 22:20:54,087 INFO L175 Difference]: Start difference. First operand has 294 places, 442 transitions, 6576 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:20:54,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 467 transitions, 7934 flow [2024-06-27 22:20:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 467 transitions, 7795 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-27 22:20:54,796 INFO L231 Difference]: Finished difference. Result has 301 places, 445 transitions, 6825 flow [2024-06-27 22:20:54,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6825, PETRI_PLACES=301, PETRI_TRANSITIONS=445} [2024-06-27 22:20:54,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-27 22:20:54,797 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 445 transitions, 6825 flow [2024-06-27 22:20:54,797 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 22:20:54,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:54,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:20:54,797 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 22:20:54,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:54,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1182285881, now seen corresponding path program 10 times [2024-06-27 22:20:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544970131] [2024-06-27 22:20:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:54,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:56,161 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 22:20:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:56,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544970131] [2024-06-27 22:20:56,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544970131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:56,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:56,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173361393] [2024-06-27 22:20:56,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:56,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:56,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:56,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:20:56,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 445 transitions, 6825 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 22:20:56,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:56,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:20:56,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:56,961 INFO L124 PetriNetUnfolderBase]: 1349/2450 cut-off events. [2024-06-27 22:20:56,962 INFO L125 PetriNetUnfolderBase]: For 148746/148746 co-relation queries the response was YES. [2024-06-27 22:20:56,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19391 conditions, 2450 events. 1349/2450 cut-off events. For 148746/148746 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14642 event pairs, 193 based on Foata normal form. 1/2379 useless extension candidates. Maximal degree in co-relation 19246. Up to 1576 conditions per place. [2024-06-27 22:20:56,988 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 233 selfloop transitions, 225 changer transitions 0/466 dead transitions. [2024-06-27 22:20:56,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 466 transitions, 7971 flow [2024-06-27 22:20:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:20:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:20:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:20:56,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:20:56,990 INFO L175 Difference]: Start difference. First operand has 301 places, 445 transitions, 6825 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:20:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 466 transitions, 7971 flow [2024-06-27 22:20:57,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 466 transitions, 7569 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:57,583 INFO L231 Difference]: Finished difference. Result has 305 places, 445 transitions, 6879 flow [2024-06-27 22:20:57,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6423, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6879, PETRI_PLACES=305, PETRI_TRANSITIONS=445} [2024-06-27 22:20:57,584 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-27 22:20:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 445 transitions, 6879 flow [2024-06-27 22:20:57,584 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 22:20:57,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:57,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:20:57,585 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 22:20:57,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1486709601, now seen corresponding path program 4 times [2024-06-27 22:20:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845687146] [2024-06-27 22:20:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:57,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:58,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:58,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845687146] [2024-06-27 22:20:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845687146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:58,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775812272] [2024-06-27 22:20:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:59,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:20:59,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 445 transitions, 6879 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 22:20:59,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:59,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:20:59,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:59,941 INFO L124 PetriNetUnfolderBase]: 1283/2381 cut-off events. [2024-06-27 22:20:59,941 INFO L125 PetriNetUnfolderBase]: For 153545/153560 co-relation queries the response was YES. [2024-06-27 22:20:59,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18979 conditions, 2381 events. 1283/2381 cut-off events. For 153545/153560 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14511 event pairs, 238 based on Foata normal form. 7/2310 useless extension candidates. Maximal degree in co-relation 18833. Up to 1859 conditions per place. [2024-06-27 22:20:59,963 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 392 selfloop transitions, 22 changer transitions 0/468 dead transitions. [2024-06-27 22:20:59,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 468 transitions, 7879 flow [2024-06-27 22:20:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:20:59,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 22:20:59,965 INFO L175 Difference]: Start difference. First operand has 305 places, 445 transitions, 6879 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:20:59,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 468 transitions, 7879 flow [2024-06-27 22:21:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 468 transitions, 7463 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 22:21:00,676 INFO L231 Difference]: Finished difference. Result has 304 places, 448 transitions, 6613 flow [2024-06-27 22:21:00,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6613, PETRI_PLACES=304, PETRI_TRANSITIONS=448} [2024-06-27 22:21:00,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-27 22:21:00,677 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 448 transitions, 6613 flow [2024-06-27 22:21:00,677 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 22:21:00,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:00,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:00,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:21:00,677 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 22:21:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1171234412, now seen corresponding path program 10 times [2024-06-27 22:21:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674857058] [2024-06-27 22:21:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:02,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:02,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674857058] [2024-06-27 22:21:02,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674857058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:02,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:02,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901859543] [2024-06-27 22:21:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:02,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:02,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:02,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:02,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 448 transitions, 6613 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 22:21:02,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:02,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:02,768 INFO L124 PetriNetUnfolderBase]: 1355/2460 cut-off events. [2024-06-27 22:21:02,768 INFO L125 PetriNetUnfolderBase]: For 152137/152137 co-relation queries the response was YES. [2024-06-27 22:21:02,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19208 conditions, 2460 events. 1355/2460 cut-off events. For 152137/152137 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14690 event pairs, 186 based on Foata normal form. 1/2390 useless extension candidates. Maximal degree in co-relation 19061. Up to 1725 conditions per place. [2024-06-27 22:21:02,796 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 283 selfloop transitions, 178 changer transitions 0/469 dead transitions. [2024-06-27 22:21:02,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 469 transitions, 7769 flow [2024-06-27 22:21:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:21:02,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2024-06-27 22:21:02,797 INFO L175 Difference]: Start difference. First operand has 304 places, 448 transitions, 6613 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:21:02,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 469 transitions, 7769 flow [2024-06-27 22:21:03,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 469 transitions, 7611 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:03,588 INFO L231 Difference]: Finished difference. Result has 307 places, 448 transitions, 6817 flow [2024-06-27 22:21:03,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6455, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6817, PETRI_PLACES=307, PETRI_TRANSITIONS=448} [2024-06-27 22:21:03,589 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-27 22:21:03,589 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 448 transitions, 6817 flow [2024-06-27 22:21:03,589 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 22:21:03,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:03,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:03,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:21:03,590 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 22:21:03,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1171234071, now seen corresponding path program 5 times [2024-06-27 22:21:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:03,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801113090] [2024-06-27 22:21:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:04,806 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 22:21:04,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:04,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801113090] [2024-06-27 22:21:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801113090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:04,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:04,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867371913] [2024-06-27 22:21:04,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:04,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:04,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:04,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:04,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:21:04,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 448 transitions, 6817 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 22:21:04,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:04,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:21:04,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:05,504 INFO L124 PetriNetUnfolderBase]: 1160/2218 cut-off events. [2024-06-27 22:21:05,504 INFO L125 PetriNetUnfolderBase]: For 151682/151691 co-relation queries the response was YES. [2024-06-27 22:21:05,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17428 conditions, 2218 events. 1160/2218 cut-off events. For 151682/151691 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13896 event pairs, 197 based on Foata normal form. 7/2142 useless extension candidates. Maximal degree in co-relation 17279. Up to 1509 conditions per place. [2024-06-27 22:21:05,529 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 345 selfloop transitions, 71 changer transitions 0/477 dead transitions. [2024-06-27 22:21:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 477 transitions, 7973 flow [2024-06-27 22:21:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:21:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:21:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:21:05,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256410256410257 [2024-06-27 22:21:05,530 INFO L175 Difference]: Start difference. First operand has 307 places, 448 transitions, 6817 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:21:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 477 transitions, 7973 flow [2024-06-27 22:21:06,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 477 transitions, 7631 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:06,260 INFO L231 Difference]: Finished difference. Result has 310 places, 455 transitions, 6833 flow [2024-06-27 22:21:06,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6483, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6833, PETRI_PLACES=310, PETRI_TRANSITIONS=455} [2024-06-27 22:21:06,260 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-27 22:21:06,260 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 455 transitions, 6833 flow [2024-06-27 22:21:06,260 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 22:21:06,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:06,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:21:06,261 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 22:21:06,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash -287538806, now seen corresponding path program 6 times [2024-06-27 22:21:06,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159447456] [2024-06-27 22:21:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:07,617 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 22:21:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159447456] [2024-06-27 22:21:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159447456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:07,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269862099] [2024-06-27 22:21:07,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:07,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:07,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 455 transitions, 6833 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 22:21:07,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:07,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:07,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:08,629 INFO L124 PetriNetUnfolderBase]: 1317/2430 cut-off events. [2024-06-27 22:21:08,630 INFO L125 PetriNetUnfolderBase]: For 157805/157847 co-relation queries the response was YES. [2024-06-27 22:21:08,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19333 conditions, 2430 events. 1317/2430 cut-off events. For 157805/157847 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14748 event pairs, 180 based on Foata normal form. 1/2357 useless extension candidates. Maximal degree in co-relation 19181. Up to 1810 conditions per place. [2024-06-27 22:21:08,659 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 369 selfloop transitions, 83 changer transitions 0/497 dead transitions. [2024-06-27 22:21:08,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 497 transitions, 8101 flow [2024-06-27 22:21:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:21:08,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:21:08,661 INFO L175 Difference]: Start difference. First operand has 310 places, 455 transitions, 6833 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:21:08,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 497 transitions, 8101 flow [2024-06-27 22:21:09,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 497 transitions, 7889 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:09,388 INFO L231 Difference]: Finished difference. Result has 317 places, 471 transitions, 7107 flow [2024-06-27 22:21:09,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6621, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7107, PETRI_PLACES=317, PETRI_TRANSITIONS=471} [2024-06-27 22:21:09,388 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-27 22:21:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 471 transitions, 7107 flow [2024-06-27 22:21:09,389 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 22:21:09,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:09,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:09,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:21:09,389 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 22:21:09,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1536253938, now seen corresponding path program 7 times [2024-06-27 22:21:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:09,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550723115] [2024-06-27 22:21:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:10,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550723115] [2024-06-27 22:21:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550723115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658194640] [2024-06-27 22:21:10,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:10,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:10,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:10,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 471 transitions, 7107 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 22:21:10,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:10,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:10,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:11,323 INFO L124 PetriNetUnfolderBase]: 1350/2493 cut-off events. [2024-06-27 22:21:11,323 INFO L125 PetriNetUnfolderBase]: For 162241/162281 co-relation queries the response was YES. [2024-06-27 22:21:11,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19950 conditions, 2493 events. 1350/2493 cut-off events. For 162241/162281 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15278 event pairs, 168 based on Foata normal form. 1/2421 useless extension candidates. Maximal degree in co-relation 19795. Up to 1851 conditions per place. [2024-06-27 22:21:11,348 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 373 selfloop transitions, 103 changer transitions 0/521 dead transitions. [2024-06-27 22:21:11,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 521 transitions, 8614 flow [2024-06-27 22:21:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:21:11,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:21:11,349 INFO L175 Difference]: Start difference. First operand has 317 places, 471 transitions, 7107 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:21:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 521 transitions, 8614 flow [2024-06-27 22:21:11,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 521 transitions, 8279 flow, removed 115 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:11,988 INFO L231 Difference]: Finished difference. Result has 323 places, 490 transitions, 7475 flow [2024-06-27 22:21:11,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6893, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7475, PETRI_PLACES=323, PETRI_TRANSITIONS=490} [2024-06-27 22:21:11,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-27 22:21:11,989 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 490 transitions, 7475 flow [2024-06-27 22:21:11,989 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 22:21:11,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:11,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:11,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:21:11,989 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 22:21:11,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2000682898, now seen corresponding path program 8 times [2024-06-27 22:21:11,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:11,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327582501] [2024-06-27 22:21:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:11,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327582501] [2024-06-27 22:21:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327582501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:13,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:13,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146939406] [2024-06-27 22:21:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:13,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:13,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 490 transitions, 7475 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 22:21:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:14,338 INFO L124 PetriNetUnfolderBase]: 1391/2569 cut-off events. [2024-06-27 22:21:14,338 INFO L125 PetriNetUnfolderBase]: For 167423/167463 co-relation queries the response was YES. [2024-06-27 22:21:14,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20677 conditions, 2569 events. 1391/2569 cut-off events. For 167423/167463 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15887 event pairs, 171 based on Foata normal form. 1/2497 useless extension candidates. Maximal degree in co-relation 20520. Up to 1903 conditions per place. [2024-06-27 22:21:14,367 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 385 selfloop transitions, 114 changer transitions 0/544 dead transitions. [2024-06-27 22:21:14,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 544 transitions, 9133 flow [2024-06-27 22:21:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-27 22:21:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:21:14,369 INFO L175 Difference]: Start difference. First operand has 323 places, 490 transitions, 7475 flow. Second operand 9 states and 182 transitions. [2024-06-27 22:21:14,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 544 transitions, 9133 flow [2024-06-27 22:21:14,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 544 transitions, 8653 flow, removed 154 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:14,989 INFO L231 Difference]: Finished difference. Result has 326 places, 515 transitions, 7849 flow [2024-06-27 22:21:14,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7149, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7849, PETRI_PLACES=326, PETRI_TRANSITIONS=515} [2024-06-27 22:21:14,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-27 22:21:14,990 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 515 transitions, 7849 flow [2024-06-27 22:21:14,990 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 22:21:14,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:14,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:21:14,990 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 22:21:14,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2000522721, now seen corresponding path program 11 times [2024-06-27 22:21:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496522152] [2024-06-27 22:21:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:15,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496522152] [2024-06-27 22:21:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496522152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:15,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482818975] [2024-06-27 22:21:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:16,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:16,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 515 transitions, 7849 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 22:21:16,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:16,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:16,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:16,817 INFO L124 PetriNetUnfolderBase]: 1471/2662 cut-off events. [2024-06-27 22:21:16,817 INFO L125 PetriNetUnfolderBase]: For 167651/167651 co-relation queries the response was YES. [2024-06-27 22:21:16,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21359 conditions, 2662 events. 1471/2662 cut-off events. For 167651/167651 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16236 event pairs, 165 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 21202. Up to 2183 conditions per place. [2024-06-27 22:21:16,849 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 454 selfloop transitions, 88 changer transitions 0/550 dead transitions. [2024-06-27 22:21:16,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 550 transitions, 9174 flow [2024-06-27 22:21:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:21:16,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:21:16,851 INFO L175 Difference]: Start difference. First operand has 326 places, 515 transitions, 7849 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:21:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 550 transitions, 9174 flow [2024-06-27 22:21:17,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 550 transitions, 8911 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:17,462 INFO L231 Difference]: Finished difference. Result has 331 places, 521 transitions, 7899 flow [2024-06-27 22:21:17,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7586, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7899, PETRI_PLACES=331, PETRI_TRANSITIONS=521} [2024-06-27 22:21:17,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-27 22:21:17,462 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 521 transitions, 7899 flow [2024-06-27 22:21:17,463 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 22:21:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:17,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:17,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:21:17,463 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 22:21:17,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2000509918, now seen corresponding path program 9 times [2024-06-27 22:21:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649544322] [2024-06-27 22:21:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:18,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649544322] [2024-06-27 22:21:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649544322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:18,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:18,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:18,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885612526] [2024-06-27 22:21:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:18,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:18,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 521 transitions, 7899 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 22:21:18,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:18,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:19,704 INFO L124 PetriNetUnfolderBase]: 1410/2617 cut-off events. [2024-06-27 22:21:19,705 INFO L125 PetriNetUnfolderBase]: For 170152/170152 co-relation queries the response was YES. [2024-06-27 22:21:19,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21009 conditions, 2617 events. 1410/2617 cut-off events. For 170152/170152 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16331 event pairs, 148 based on Foata normal form. 1/2547 useless extension candidates. Maximal degree in co-relation 20850. Up to 1889 conditions per place. [2024-06-27 22:21:19,735 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 371 selfloop transitions, 138 changer transitions 0/556 dead transitions. [2024-06-27 22:21:19,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 556 transitions, 9192 flow [2024-06-27 22:21:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:21:19,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:21:19,736 INFO L175 Difference]: Start difference. First operand has 331 places, 521 transitions, 7899 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:21:19,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 556 transitions, 9192 flow [2024-06-27 22:21:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 556 transitions, 8970 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:20,381 INFO L231 Difference]: Finished difference. Result has 333 places, 527 transitions, 8124 flow [2024-06-27 22:21:20,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7677, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8124, PETRI_PLACES=333, PETRI_TRANSITIONS=527} [2024-06-27 22:21:20,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-27 22:21:20,382 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 527 transitions, 8124 flow [2024-06-27 22:21:20,382 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 22:21:20,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:20,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:20,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:21:20,383 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 22:21:20,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1910296706, now seen corresponding path program 10 times [2024-06-27 22:21:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:20,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011759673] [2024-06-27 22:21:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:20,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011759673] [2024-06-27 22:21:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011759673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:21,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555902421] [2024-06-27 22:21:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:21,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:21,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:21,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 527 transitions, 8124 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 22:21:21,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:21,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:21,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:22,625 INFO L124 PetriNetUnfolderBase]: 1486/2791 cut-off events. [2024-06-27 22:21:22,625 INFO L125 PetriNetUnfolderBase]: For 176782/176782 co-relation queries the response was YES. [2024-06-27 22:21:22,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22023 conditions, 2791 events. 1486/2791 cut-off events. For 176782/176782 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17915 event pairs, 154 based on Foata normal form. 1/2709 useless extension candidates. Maximal degree in co-relation 21863. Up to 1954 conditions per place. [2024-06-27 22:21:22,660 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 437 selfloop transitions, 126 changer transitions 0/610 dead transitions. [2024-06-27 22:21:22,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 610 transitions, 10064 flow [2024-06-27 22:21:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 22:21:22,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 22:21:22,661 INFO L175 Difference]: Start difference. First operand has 333 places, 527 transitions, 8124 flow. Second operand 10 states and 200 transitions. [2024-06-27 22:21:22,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 610 transitions, 10064 flow [2024-06-27 22:21:23,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 610 transitions, 9658 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:23,281 INFO L231 Difference]: Finished difference. Result has 338 places, 571 transitions, 8784 flow [2024-06-27 22:21:23,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7750, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8784, PETRI_PLACES=338, PETRI_TRANSITIONS=571} [2024-06-27 22:21:23,281 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-27 22:21:23,282 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 571 transitions, 8784 flow [2024-06-27 22:21:23,282 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 22:21:23,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:23,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:23,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:21:23,282 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 22:21:23,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1771608379, now seen corresponding path program 12 times [2024-06-27 22:21:23,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:23,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945842270] [2024-06-27 22:21:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:23,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:24,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:24,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945842270] [2024-06-27 22:21:24,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945842270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:24,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420885661] [2024-06-27 22:21:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:24,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:24,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 571 transitions, 8784 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 22:21:24,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:24,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:24,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:25,299 INFO L124 PetriNetUnfolderBase]: 1571/2868 cut-off events. [2024-06-27 22:21:25,299 INFO L125 PetriNetUnfolderBase]: For 180040/180040 co-relation queries the response was YES. [2024-06-27 22:21:25,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22926 conditions, 2868 events. 1571/2868 cut-off events. For 180040/180040 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18026 event pairs, 180 based on Foata normal form. 1/2785 useless extension candidates. Maximal degree in co-relation 22762. Up to 2338 conditions per place. [2024-06-27 22:21:25,334 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 511 selfloop transitions, 88 changer transitions 0/607 dead transitions. [2024-06-27 22:21:25,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 607 transitions, 10257 flow [2024-06-27 22:21:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:21:25,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 22:21:25,335 INFO L175 Difference]: Start difference. First operand has 338 places, 571 transitions, 8784 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:21:25,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 607 transitions, 10257 flow [2024-06-27 22:21:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 607 transitions, 10018 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-27 22:21:26,097 INFO L231 Difference]: Finished difference. Result has 344 places, 580 transitions, 8915 flow [2024-06-27 22:21:26,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8545, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8915, PETRI_PLACES=344, PETRI_TRANSITIONS=580} [2024-06-27 22:21:26,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-27 22:21:26,098 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 580 transitions, 8915 flow [2024-06-27 22:21:26,098 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 22:21:26,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:26,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:21:26,098 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 22:21:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1910123726, now seen corresponding path program 11 times [2024-06-27 22:21:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569314690] [2024-06-27 22:21:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569314690] [2024-06-27 22:21:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569314690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:27,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:27,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2863011] [2024-06-27 22:21:27,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:27,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:27,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:27,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 580 transitions, 8915 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:27,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:27,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:28,593 INFO L124 PetriNetUnfolderBase]: 1513/2836 cut-off events. [2024-06-27 22:21:28,594 INFO L125 PetriNetUnfolderBase]: For 183673/183673 co-relation queries the response was YES. [2024-06-27 22:21:28,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22548 conditions, 2836 events. 1513/2836 cut-off events. For 183673/183673 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18268 event pairs, 162 based on Foata normal form. 1/2756 useless extension candidates. Maximal degree in co-relation 22383. Up to 2049 conditions per place. [2024-06-27 22:21:28,629 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 427 selfloop transitions, 142 changer transitions 0/619 dead transitions. [2024-06-27 22:21:28,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 619 transitions, 10386 flow [2024-06-27 22:21:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:21:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-06-27 22:21:28,630 INFO L175 Difference]: Start difference. First operand has 344 places, 580 transitions, 8915 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:21:28,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 619 transitions, 10386 flow [2024-06-27 22:21:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 619 transitions, 10208 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:29,546 INFO L231 Difference]: Finished difference. Result has 349 places, 592 transitions, 9273 flow [2024-06-27 22:21:29,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8737, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9273, PETRI_PLACES=349, PETRI_TRANSITIONS=592} [2024-06-27 22:21:29,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-27 22:21:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 592 transitions, 9273 flow [2024-06-27 22:21:29,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:29,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:21:29,548 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 22:21:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1765727059, now seen corresponding path program 13 times [2024-06-27 22:21:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:29,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872253233] [2024-06-27 22:21:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:30,714 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 22:21:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872253233] [2024-06-27 22:21:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872253233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050577314] [2024-06-27 22:21:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:30,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:30,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 592 transitions, 9273 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 22:21:30,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:30,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:30,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:31,798 INFO L124 PetriNetUnfolderBase]: 1613/2931 cut-off events. [2024-06-27 22:21:31,798 INFO L125 PetriNetUnfolderBase]: For 193211/193211 co-relation queries the response was YES. [2024-06-27 22:21:31,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23674 conditions, 2931 events. 1613/2931 cut-off events. For 193211/193211 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 18429 event pairs, 161 based on Foata normal form. 1/2845 useless extension candidates. Maximal degree in co-relation 23507. Up to 2312 conditions per place. [2024-06-27 22:21:31,831 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 494 selfloop transitions, 130 changer transitions 0/632 dead transitions. [2024-06-27 22:21:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 632 transitions, 11069 flow [2024-06-27 22:21:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:21:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:21:31,832 INFO L175 Difference]: Start difference. First operand has 349 places, 592 transitions, 9273 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:21:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 632 transitions, 11069 flow [2024-06-27 22:21:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 632 transitions, 10673 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:32,631 INFO L231 Difference]: Finished difference. Result has 355 places, 604 transitions, 9437 flow [2024-06-27 22:21:32,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8889, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9437, PETRI_PLACES=355, PETRI_TRANSITIONS=604} [2024-06-27 22:21:32,632 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 22:21:32,632 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 604 transitions, 9437 flow [2024-06-27 22:21:32,632 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 22:21:32,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:32,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:21:32,632 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 22:21:32,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1765339466, now seen corresponding path program 12 times [2024-06-27 22:21:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229201225] [2024-06-27 22:21:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:34,004 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 22:21:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229201225] [2024-06-27 22:21:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229201225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265699627] [2024-06-27 22:21:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:34,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 604 transitions, 9437 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 22:21:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:34,956 INFO L124 PetriNetUnfolderBase]: 1545/2885 cut-off events. [2024-06-27 22:21:34,956 INFO L125 PetriNetUnfolderBase]: For 200711/200724 co-relation queries the response was YES. [2024-06-27 22:21:34,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23372 conditions, 2885 events. 1545/2885 cut-off events. For 200711/200724 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 18570 event pairs, 152 based on Foata normal form. 1/2800 useless extension candidates. Maximal degree in co-relation 23203. Up to 2035 conditions per place. [2024-06-27 22:21:34,992 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 399 selfloop transitions, 184 changer transitions 0/637 dead transitions. [2024-06-27 22:21:34,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 637 transitions, 10887 flow [2024-06-27 22:21:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:34,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:21:34,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:21:34,993 INFO L175 Difference]: Start difference. First operand has 355 places, 604 transitions, 9437 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:21:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 637 transitions, 10887 flow [2024-06-27 22:21:35,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 637 transitions, 10667 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:35,742 INFO L231 Difference]: Finished difference. Result has 359 places, 610 transitions, 9770 flow [2024-06-27 22:21:35,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9217, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9770, PETRI_PLACES=359, PETRI_TRANSITIONS=610} [2024-06-27 22:21:35,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-27 22:21:35,743 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 610 transitions, 9770 flow [2024-06-27 22:21:35,743 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 22:21:35,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:35,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:35,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:21:35,743 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 22:21:35,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash 403126056, now seen corresponding path program 11 times [2024-06-27 22:21:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268586175] [2024-06-27 22:21:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268586175] [2024-06-27 22:21:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268586175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:36,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:36,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122417066] [2024-06-27 22:21:36,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:36,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:36,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:36,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:36,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 610 transitions, 9770 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 22:21:36,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:36,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:37,955 INFO L124 PetriNetUnfolderBase]: 1637/2988 cut-off events. [2024-06-27 22:21:37,956 INFO L125 PetriNetUnfolderBase]: For 200723/200723 co-relation queries the response was YES. [2024-06-27 22:21:37,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24315 conditions, 2988 events. 1637/2988 cut-off events. For 200723/200723 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18977 event pairs, 221 based on Foata normal form. 1/2908 useless extension candidates. Maximal degree in co-relation 24144. Up to 2477 conditions per place. [2024-06-27 22:21:37,993 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 572 selfloop transitions, 61 changer transitions 0/641 dead transitions. [2024-06-27 22:21:37,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 641 transitions, 11247 flow [2024-06-27 22:21:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:21:37,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2024-06-27 22:21:37,995 INFO L175 Difference]: Start difference. First operand has 359 places, 610 transitions, 9770 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:21:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 641 transitions, 11247 flow [2024-06-27 22:21:38,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 641 transitions, 10762 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:38,994 INFO L231 Difference]: Finished difference. Result has 361 places, 616 transitions, 9533 flow [2024-06-27 22:21:38,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9285, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9533, PETRI_PLACES=361, PETRI_TRANSITIONS=616} [2024-06-27 22:21:38,994 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-27 22:21:38,995 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 616 transitions, 9533 flow [2024-06-27 22:21:38,995 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 22:21:38,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:38,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:38,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:21:38,995 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 22:21:38,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2012671737, now seen corresponding path program 14 times [2024-06-27 22:21:38,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:38,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817679587] [2024-06-27 22:21:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817679587] [2024-06-27 22:21:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817679587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:40,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240736632] [2024-06-27 22:21:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:40,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:40,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:40,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 616 transitions, 9533 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 22:21:40,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:40,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:40,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:41,166 INFO L124 PetriNetUnfolderBase]: 1635/2969 cut-off events. [2024-06-27 22:21:41,166 INFO L125 PetriNetUnfolderBase]: For 196865/196865 co-relation queries the response was YES. [2024-06-27 22:21:41,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23866 conditions, 2969 events. 1635/2969 cut-off events. For 196865/196865 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18740 event pairs, 161 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 23694. Up to 2346 conditions per place. [2024-06-27 22:21:41,195 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 498 selfloop transitions, 137 changer transitions 0/643 dead transitions. [2024-06-27 22:21:41,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 643 transitions, 10925 flow [2024-06-27 22:21:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:21:41,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:21:41,197 INFO L175 Difference]: Start difference. First operand has 361 places, 616 transitions, 9533 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:21:41,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 643 transitions, 10925 flow [2024-06-27 22:21:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 643 transitions, 10710 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:41,999 INFO L231 Difference]: Finished difference. Result has 363 places, 616 transitions, 9603 flow [2024-06-27 22:21:41,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9318, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9603, PETRI_PLACES=363, PETRI_TRANSITIONS=616} [2024-06-27 22:21:42,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 22:21:42,000 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 616 transitions, 9603 flow [2024-06-27 22:21:42,000 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 22:21:42,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:42,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:42,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:21:42,000 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 22:21:42,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1765093450, now seen corresponding path program 12 times [2024-06-27 22:21:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943096562] [2024-06-27 22:21:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:43,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943096562] [2024-06-27 22:21:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943096562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902176410] [2024-06-27 22:21:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:43,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:43,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 616 transitions, 9603 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 22:21:43,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:43,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:43,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:44,253 INFO L124 PetriNetUnfolderBase]: 1651/3014 cut-off events. [2024-06-27 22:21:44,253 INFO L125 PetriNetUnfolderBase]: For 201116/201116 co-relation queries the response was YES. [2024-06-27 22:21:44,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 3014 events. 1651/3014 cut-off events. For 201116/201116 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19219 event pairs, 203 based on Foata normal form. 1/2934 useless extension candidates. Maximal degree in co-relation 23998. Up to 2497 conditions per place. [2024-06-27 22:21:44,291 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 579 selfloop transitions, 65 changer transitions 0/652 dead transitions. [2024-06-27 22:21:44,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 652 transitions, 11164 flow [2024-06-27 22:21:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:21:44,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2024-06-27 22:21:44,293 INFO L175 Difference]: Start difference. First operand has 363 places, 616 transitions, 9603 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:21:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 652 transitions, 11164 flow [2024-06-27 22:21:45,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 652 transitions, 10874 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:45,270 INFO L231 Difference]: Finished difference. Result has 364 places, 625 transitions, 9626 flow [2024-06-27 22:21:45,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9313, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9626, PETRI_PLACES=364, PETRI_TRANSITIONS=625} [2024-06-27 22:21:45,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-27 22:21:45,271 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 625 transitions, 9626 flow [2024-06-27 22:21:45,271 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 22:21:45,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:45,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:45,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:21:45,271 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 22:21:45,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash 398447877, now seen corresponding path program 15 times [2024-06-27 22:21:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:45,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991775223] [2024-06-27 22:21:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:46,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991775223] [2024-06-27 22:21:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991775223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:46,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:46,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749233301] [2024-06-27 22:21:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:46,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:46,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:46,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 625 transitions, 9626 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 22:21:46,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:46,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:47,460 INFO L124 PetriNetUnfolderBase]: 1671/3029 cut-off events. [2024-06-27 22:21:47,460 INFO L125 PetriNetUnfolderBase]: For 204722/204722 co-relation queries the response was YES. [2024-06-27 22:21:47,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24343 conditions, 3029 events. 1671/3029 cut-off events. For 204722/204722 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 19155 event pairs, 207 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 24169. Up to 2487 conditions per place. [2024-06-27 22:21:47,495 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 564 selfloop transitions, 90 changer transitions 0/662 dead transitions. [2024-06-27 22:21:47,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 662 transitions, 11255 flow [2024-06-27 22:21:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:21:47,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:21:47,497 INFO L175 Difference]: Start difference. First operand has 364 places, 625 transitions, 9626 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:21:47,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 662 transitions, 11255 flow [2024-06-27 22:21:48,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 662 transitions, 11091 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:48,705 INFO L231 Difference]: Finished difference. Result has 366 places, 637 transitions, 9905 flow [2024-06-27 22:21:48,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9462, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9905, PETRI_PLACES=366, PETRI_TRANSITIONS=637} [2024-06-27 22:21:48,706 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 323 predicate places. [2024-06-27 22:21:48,706 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 637 transitions, 9905 flow [2024-06-27 22:21:48,706 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 22:21:48,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:48,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:21:48,706 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 22:21:48,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1150221836, now seen corresponding path program 13 times [2024-06-27 22:21:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:48,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218449309] [2024-06-27 22:21:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218449309] [2024-06-27 22:21:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218449309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250101730] [2024-06-27 22:21:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:49,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:49,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:50,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:50,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 637 transitions, 9905 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 22:21:50,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:50,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:51,183 INFO L124 PetriNetUnfolderBase]: 1612/2998 cut-off events. [2024-06-27 22:21:51,183 INFO L125 PetriNetUnfolderBase]: For 210760/210762 co-relation queries the response was YES. [2024-06-27 22:21:51,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24190 conditions, 2998 events. 1612/2998 cut-off events. For 210760/210762 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19410 event pairs, 185 based on Foata normal form. 1/2917 useless extension candidates. Maximal degree in co-relation 24015. Up to 2176 conditions per place. [2024-06-27 22:21:51,222 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 474 selfloop transitions, 142 changer transitions 0/674 dead transitions. [2024-06-27 22:21:51,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 674 transitions, 11480 flow [2024-06-27 22:21:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:21:51,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-06-27 22:21:51,223 INFO L175 Difference]: Start difference. First operand has 366 places, 637 transitions, 9905 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:21:51,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 674 transitions, 11480 flow [2024-06-27 22:21:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 674 transitions, 11318 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:52,202 INFO L231 Difference]: Finished difference. Result has 371 places, 649 transitions, 10312 flow [2024-06-27 22:21:52,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9743, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10312, PETRI_PLACES=371, PETRI_TRANSITIONS=649} [2024-06-27 22:21:52,203 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-06-27 22:21:52,203 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 649 transitions, 10312 flow [2024-06-27 22:21:52,203 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 22:21:52,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:52,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:52,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:21:52,204 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 22:21:52,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 403118337, now seen corresponding path program 16 times [2024-06-27 22:21:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:52,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913075762] [2024-06-27 22:21:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:52,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:53,356 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 22:21:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913075762] [2024-06-27 22:21:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913075762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709696938] [2024-06-27 22:21:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:53,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:21:53,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 649 transitions, 10312 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 22:21:53,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:53,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:21:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:54,472 INFO L124 PetriNetUnfolderBase]: 1725/3116 cut-off events. [2024-06-27 22:21:54,472 INFO L125 PetriNetUnfolderBase]: For 221788/221788 co-relation queries the response was YES. [2024-06-27 22:21:54,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25493 conditions, 3116 events. 1725/3116 cut-off events. For 221788/221788 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19808 event pairs, 199 based on Foata normal form. 1/3035 useless extension candidates. Maximal degree in co-relation 25317. Up to 2502 conditions per place. [2024-06-27 22:21:54,510 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 560 selfloop transitions, 125 changer transitions 0/693 dead transitions. [2024-06-27 22:21:54,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 693 transitions, 12317 flow [2024-06-27 22:21:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:21:54,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 22:21:54,511 INFO L175 Difference]: Start difference. First operand has 371 places, 649 transitions, 10312 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:21:54,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 693 transitions, 12317 flow [2024-06-27 22:21:55,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 693 transitions, 11929 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:55,723 INFO L231 Difference]: Finished difference. Result has 374 places, 667 transitions, 10579 flow [2024-06-27 22:21:55,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9924, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10579, PETRI_PLACES=374, PETRI_TRANSITIONS=667} [2024-06-27 22:21:55,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 331 predicate places. [2024-06-27 22:21:55,724 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 667 transitions, 10579 flow [2024-06-27 22:21:55,724 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 22:21:55,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:55,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:55,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:21:55,725 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 22:21:55,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash 403118120, now seen corresponding path program 14 times [2024-06-27 22:21:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:55,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547697892] [2024-06-27 22:21:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547697892] [2024-06-27 22:21:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547697892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649757204] [2024-06-27 22:21:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:57,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:57,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:21:57,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 667 transitions, 10579 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 22:21:57,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:57,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:21:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:58,292 INFO L124 PetriNetUnfolderBase]: 1659/3075 cut-off events. [2024-06-27 22:21:58,292 INFO L125 PetriNetUnfolderBase]: For 226645/226690 co-relation queries the response was YES. [2024-06-27 22:21:58,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25106 conditions, 3075 events. 1659/3075 cut-off events. For 226645/226690 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 19974 event pairs, 184 based on Foata normal form. 24/3017 useless extension candidates. Maximal degree in co-relation 24928. Up to 2195 conditions per place. [2024-06-27 22:21:58,331 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 475 selfloop transitions, 162 changer transitions 0/701 dead transitions. [2024-06-27 22:21:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 701 transitions, 12165 flow [2024-06-27 22:21:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:21:58,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:21:58,332 INFO L175 Difference]: Start difference. First operand has 374 places, 667 transitions, 10579 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:21:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 701 transitions, 12165 flow [2024-06-27 22:21:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 701 transitions, 11955 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:21:59,381 INFO L231 Difference]: Finished difference. Result has 378 places, 676 transitions, 10929 flow [2024-06-27 22:21:59,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10929, PETRI_PLACES=378, PETRI_TRANSITIONS=676} [2024-06-27 22:21:59,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-27 22:21:59,382 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 676 transitions, 10929 flow [2024-06-27 22:21:59,382 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 22:21:59,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:59,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:59,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:21:59,382 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 22:21:59,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash 403125777, now seen corresponding path program 17 times [2024-06-27 22:21:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:59,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373837339] [2024-06-27 22:21:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373837339] [2024-06-27 22:22:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373837339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:00,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:00,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047513417] [2024-06-27 22:22:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:00,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:00,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:00,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 676 transitions, 10929 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 22:22:00,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:00,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:00,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:01,658 INFO L124 PetriNetUnfolderBase]: 1739/3143 cut-off events. [2024-06-27 22:22:01,658 INFO L125 PetriNetUnfolderBase]: For 224937/224937 co-relation queries the response was YES. [2024-06-27 22:22:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25892 conditions, 3143 events. 1739/3143 cut-off events. For 224937/224937 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20016 event pairs, 200 based on Foata normal form. 1/3062 useless extension candidates. Maximal degree in co-relation 25712. Up to 2524 conditions per place. [2024-06-27 22:22:01,699 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 564 selfloop transitions, 129 changer transitions 0/701 dead transitions. [2024-06-27 22:22:01,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 701 transitions, 12423 flow [2024-06-27 22:22:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:22:01,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:22:01,700 INFO L175 Difference]: Start difference. First operand has 378 places, 676 transitions, 10929 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:22:01,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 701 transitions, 12423 flow [2024-06-27 22:22:02,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 701 transitions, 11937 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:02,973 INFO L231 Difference]: Finished difference. Result has 381 places, 676 transitions, 10715 flow [2024-06-27 22:22:02,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10443, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10715, PETRI_PLACES=381, PETRI_TRANSITIONS=676} [2024-06-27 22:22:02,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-27 22:22:02,974 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 676 transitions, 10715 flow [2024-06-27 22:22:02,974 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 22:22:02,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:02,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:02,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:22:02,974 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 22:22:02,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1143349198, now seen corresponding path program 13 times [2024-06-27 22:22:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334463000] [2024-06-27 22:22:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:04,220 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 22:22:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334463000] [2024-06-27 22:22:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334463000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:04,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:04,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383002605] [2024-06-27 22:22:04,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:04,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:04,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 676 transitions, 10715 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 22:22:04,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:04,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:04,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:05,342 INFO L124 PetriNetUnfolderBase]: 1759/3189 cut-off events. [2024-06-27 22:22:05,342 INFO L125 PetriNetUnfolderBase]: For 226683/226683 co-relation queries the response was YES. [2024-06-27 22:22:05,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25888 conditions, 3189 events. 1759/3189 cut-off events. For 226683/226683 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20477 event pairs, 219 based on Foata normal form. 1/3108 useless extension candidates. Maximal degree in co-relation 25707. Up to 2541 conditions per place. [2024-06-27 22:22:05,382 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 579 selfloop transitions, 127 changer transitions 0/714 dead transitions. [2024-06-27 22:22:05,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 714 transitions, 12608 flow [2024-06-27 22:22:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:22:05,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:22:05,383 INFO L175 Difference]: Start difference. First operand has 381 places, 676 transitions, 10715 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:22:05,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 714 transitions, 12608 flow [2024-06-27 22:22:06,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 714 transitions, 12334 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:06,715 INFO L231 Difference]: Finished difference. Result has 383 places, 688 transitions, 10933 flow [2024-06-27 22:22:06,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10441, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10933, PETRI_PLACES=383, PETRI_TRANSITIONS=688} [2024-06-27 22:22:06,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-27 22:22:06,716 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 688 transitions, 10933 flow [2024-06-27 22:22:06,716 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 22:22:06,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:06,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:22:06,717 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 22:22:06,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 576768867, now seen corresponding path program 18 times [2024-06-27 22:22:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963690336] [2024-06-27 22:22:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:07,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963690336] [2024-06-27 22:22:07,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963690336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:07,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:07,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:07,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310474520] [2024-06-27 22:22:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:07,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:07,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:08,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:08,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 688 transitions, 10933 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 22:22:08,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:08,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:08,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:09,056 INFO L124 PetriNetUnfolderBase]: 1779/3195 cut-off events. [2024-06-27 22:22:09,056 INFO L125 PetriNetUnfolderBase]: For 230937/230937 co-relation queries the response was YES. [2024-06-27 22:22:09,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 3195 events. 1779/3195 cut-off events. For 230937/230937 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20264 event pairs, 173 based on Foata normal form. 1/3113 useless extension candidates. Maximal degree in co-relation 26069. Up to 2400 conditions per place. [2024-06-27 22:22:09,103 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 493 selfloop transitions, 225 changer transitions 0/726 dead transitions. [2024-06-27 22:22:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 726 transitions, 12868 flow [2024-06-27 22:22:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:22:09,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:22:09,104 INFO L175 Difference]: Start difference. First operand has 383 places, 688 transitions, 10933 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:22:09,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 726 transitions, 12868 flow [2024-06-27 22:22:10,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 726 transitions, 12282 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:10,360 INFO L231 Difference]: Finished difference. Result has 384 places, 700 transitions, 11121 flow [2024-06-27 22:22:10,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10347, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11121, PETRI_PLACES=384, PETRI_TRANSITIONS=700} [2024-06-27 22:22:10,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-27 22:22:10,361 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 700 transitions, 11121 flow [2024-06-27 22:22:10,361 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 22:22:10,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:10,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:22:10,362 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 22:22:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1143358498, now seen corresponding path program 14 times [2024-06-27 22:22:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408187935] [2024-06-27 22:22:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:10,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:11,654 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 22:22:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408187935] [2024-06-27 22:22:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408187935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456109300] [2024-06-27 22:22:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:11,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:11,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 700 transitions, 11121 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 22:22:11,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:11,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:11,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:12,845 INFO L124 PetriNetUnfolderBase]: 1787/3231 cut-off events. [2024-06-27 22:22:12,845 INFO L125 PetriNetUnfolderBase]: For 234980/234980 co-relation queries the response was YES. [2024-06-27 22:22:12,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26669 conditions, 3231 events. 1787/3231 cut-off events. For 234980/234980 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 20755 event pairs, 220 based on Foata normal form. 1/3150 useless extension candidates. Maximal degree in co-relation 26484. Up to 2580 conditions per place. [2024-06-27 22:22:12,887 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 598 selfloop transitions, 123 changer transitions 0/729 dead transitions. [2024-06-27 22:22:12,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 729 transitions, 12962 flow [2024-06-27 22:22:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:22:12,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:22:12,890 INFO L175 Difference]: Start difference. First operand has 384 places, 700 transitions, 11121 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:22:12,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 729 transitions, 12962 flow [2024-06-27 22:22:14,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 729 transitions, 12169 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:14,094 INFO L231 Difference]: Finished difference. Result has 385 places, 703 transitions, 10667 flow [2024-06-27 22:22:14,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10328, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10667, PETRI_PLACES=385, PETRI_TRANSITIONS=703} [2024-06-27 22:22:14,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-27 22:22:14,095 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 703 transitions, 10667 flow [2024-06-27 22:22:14,095 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 22:22:14,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:14,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:14,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:22:14,096 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 22:22:14,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash 576509676, now seen corresponding path program 15 times [2024-06-27 22:22:14,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:14,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709612924] [2024-06-27 22:22:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:15,344 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 22:22:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709612924] [2024-06-27 22:22:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709612924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:15,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:15,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714941783] [2024-06-27 22:22:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:15,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:15,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:15,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:15,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:15,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 703 transitions, 10667 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 22:22:15,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:15,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:15,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:16,372 INFO L124 PetriNetUnfolderBase]: 1785/3228 cut-off events. [2024-06-27 22:22:16,372 INFO L125 PetriNetUnfolderBase]: For 230357/230357 co-relation queries the response was YES. [2024-06-27 22:22:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26175 conditions, 3228 events. 1785/3228 cut-off events. For 230357/230357 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 20724 event pairs, 220 based on Foata normal form. 1/3147 useless extension candidates. Maximal degree in co-relation 25989. Up to 2578 conditions per place. [2024-06-27 22:22:16,415 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 602 selfloop transitions, 118 changer transitions 0/728 dead transitions. [2024-06-27 22:22:16,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 728 transitions, 12223 flow [2024-06-27 22:22:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:22:16,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:22:16,416 INFO L175 Difference]: Start difference. First operand has 385 places, 703 transitions, 10667 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:22:16,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 728 transitions, 12223 flow [2024-06-27 22:22:17,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 728 transitions, 11925 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:17,790 INFO L231 Difference]: Finished difference. Result has 387 places, 703 transitions, 10615 flow [2024-06-27 22:22:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10615, PETRI_PLACES=387, PETRI_TRANSITIONS=703} [2024-06-27 22:22:17,791 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 22:22:17,791 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 703 transitions, 10615 flow [2024-06-27 22:22:17,791 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 22:22:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:22:17,792 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 22:22:17,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 576509397, now seen corresponding path program 19 times [2024-06-27 22:22:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992503024] [2024-06-27 22:22:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:19,073 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 22:22:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992503024] [2024-06-27 22:22:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992503024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:19,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:19,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656709456] [2024-06-27 22:22:19,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:19,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:19,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:19,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 703 transitions, 10615 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 22:22:19,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:19,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:19,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:20,135 INFO L124 PetriNetUnfolderBase]: 1793/3216 cut-off events. [2024-06-27 22:22:20,135 INFO L125 PetriNetUnfolderBase]: For 233873/233873 co-relation queries the response was YES. [2024-06-27 22:22:20,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26274 conditions, 3216 events. 1793/3216 cut-off events. For 233873/233873 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20408 event pairs, 173 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 26087. Up to 2418 conditions per place. [2024-06-27 22:22:20,179 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 515 selfloop transitions, 209 changer transitions 0/732 dead transitions. [2024-06-27 22:22:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 732 transitions, 12494 flow [2024-06-27 22:22:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:22:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 22:22:20,181 INFO L175 Difference]: Start difference. First operand has 387 places, 703 transitions, 10615 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:22:20,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 732 transitions, 12494 flow [2024-06-27 22:22:21,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 732 transitions, 12142 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:21,454 INFO L231 Difference]: Finished difference. Result has 387 places, 706 transitions, 10802 flow [2024-06-27 22:22:21,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10263, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10802, PETRI_PLACES=387, PETRI_TRANSITIONS=706} [2024-06-27 22:22:21,454 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 22:22:21,454 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 706 transitions, 10802 flow [2024-06-27 22:22:21,454 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 22:22:21,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:21,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:21,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:22:21,455 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 22:22:21,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1143625687, now seen corresponding path program 20 times [2024-06-27 22:22:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232995934] [2024-06-27 22:22:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:22,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:22,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232995934] [2024-06-27 22:22:22,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232995934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:22,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:22,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:22,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727604116] [2024-06-27 22:22:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:22,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 706 transitions, 10802 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 22:22:22,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:22,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:22,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:23,782 INFO L124 PetriNetUnfolderBase]: 1791/3213 cut-off events. [2024-06-27 22:22:23,783 INFO L125 PetriNetUnfolderBase]: For 232511/232511 co-relation queries the response was YES. [2024-06-27 22:22:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26280 conditions, 3213 events. 1791/3213 cut-off events. For 232511/232511 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20397 event pairs, 173 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 26092. Up to 2416 conditions per place. [2024-06-27 22:22:23,822 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 512 selfloop transitions, 211 changer transitions 0/731 dead transitions. [2024-06-27 22:22:23,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 731 transitions, 12364 flow [2024-06-27 22:22:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:22:23,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 22:22:23,824 INFO L175 Difference]: Start difference. First operand has 387 places, 706 transitions, 10802 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:22:23,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 731 transitions, 12364 flow [2024-06-27 22:22:24,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 731 transitions, 11600 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:25,001 INFO L231 Difference]: Finished difference. Result has 389 places, 706 transitions, 10470 flow [2024-06-27 22:22:25,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10470, PETRI_PLACES=389, PETRI_TRANSITIONS=706} [2024-06-27 22:22:25,001 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-27 22:22:25,001 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 706 transitions, 10470 flow [2024-06-27 22:22:25,001 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 22:22:25,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:25,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:25,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:22:25,002 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 22:22:25,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash 576501740, now seen corresponding path program 15 times [2024-06-27 22:22:25,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874186455] [2024-06-27 22:22:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874186455] [2024-06-27 22:22:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874186455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:26,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:26,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793847598] [2024-06-27 22:22:26,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:26,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:26,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:22:26,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 706 transitions, 10470 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 22:22:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:22:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:27,516 INFO L124 PetriNetUnfolderBase]: 1694/3133 cut-off events. [2024-06-27 22:22:27,516 INFO L125 PetriNetUnfolderBase]: For 229126/229195 co-relation queries the response was YES. [2024-06-27 22:22:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24950 conditions, 3133 events. 1694/3133 cut-off events. For 229126/229195 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20412 event pairs, 173 based on Foata normal form. 42/3092 useless extension candidates. Maximal degree in co-relation 24762. Up to 2098 conditions per place. [2024-06-27 22:22:27,561 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 421 selfloop transitions, 244 changer transitions 0/734 dead transitions. [2024-06-27 22:22:27,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 734 transitions, 11934 flow [2024-06-27 22:22:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:22:27,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 22:22:27,563 INFO L175 Difference]: Start difference. First operand has 389 places, 706 transitions, 10470 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:22:27,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 734 transitions, 11934 flow [2024-06-27 22:22:28,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 734 transitions, 11478 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:28,859 INFO L231 Difference]: Finished difference. Result has 390 places, 709 transitions, 10536 flow [2024-06-27 22:22:28,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10014, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10536, PETRI_PLACES=390, PETRI_TRANSITIONS=709} [2024-06-27 22:22:28,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-27 22:22:28,859 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 709 transitions, 10536 flow [2024-06-27 22:22:28,860 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 22:22:28,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:28,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:28,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:22:28,860 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 22:22:28,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1170834233, now seen corresponding path program 1 times [2024-06-27 22:22:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123283003] [2024-06-27 22:22:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123283003] [2024-06-27 22:22:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123283003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826375151] [2024-06-27 22:22:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:31,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:22:31,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 709 transitions, 10536 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 22:22:31,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:31,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:22:31,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:32,214 INFO L124 PetriNetUnfolderBase]: 1703/3148 cut-off events. [2024-06-27 22:22:32,214 INFO L125 PetriNetUnfolderBase]: For 231796/231811 co-relation queries the response was YES. [2024-06-27 22:22:32,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24923 conditions, 3148 events. 1703/3148 cut-off events. For 231796/231811 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20624 event pairs, 308 based on Foata normal form. 8/3064 useless extension candidates. Maximal degree in co-relation 24734. Up to 2445 conditions per place. [2024-06-27 22:22:32,255 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 646 selfloop transitions, 33 changer transitions 0/745 dead transitions. [2024-06-27 22:22:32,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 745 transitions, 12184 flow [2024-06-27 22:22:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 22:22:32,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46386946386946387 [2024-06-27 22:22:32,256 INFO L175 Difference]: Start difference. First operand has 390 places, 709 transitions, 10536 flow. Second operand 11 states and 199 transitions. [2024-06-27 22:22:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 745 transitions, 12184 flow [2024-06-27 22:22:33,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 745 transitions, 11378 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:33,489 INFO L231 Difference]: Finished difference. Result has 393 places, 714 transitions, 9970 flow [2024-06-27 22:22:33,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9730, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9970, PETRI_PLACES=393, PETRI_TRANSITIONS=714} [2024-06-27 22:22:33,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-27 22:22:33,490 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 714 transitions, 9970 flow [2024-06-27 22:22:33,490 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 22:22:33,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:33,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:33,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:22:33,490 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:33,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash 502722450, now seen corresponding path program 1 times [2024-06-27 22:22:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:33,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074436952] [2024-06-27 22:22:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:33,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:33,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:33,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074436952] [2024-06-27 22:22:33,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074436952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:33,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:33,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:22:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294861914] [2024-06-27 22:22:33,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:22:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:22:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:22:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 39 [2024-06-27 22:22:33,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 714 transitions, 9970 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:33,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:33,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 39 [2024-06-27 22:22:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:34,000 INFO L124 PetriNetUnfolderBase]: 794/1633 cut-off events. [2024-06-27 22:22:34,000 INFO L125 PetriNetUnfolderBase]: For 193502/193640 co-relation queries the response was YES. [2024-06-27 22:22:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14110 conditions, 1633 events. 794/1633 cut-off events. For 193502/193640 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 10323 event pairs, 172 based on Foata normal form. 120/1609 useless extension candidates. Maximal degree in co-relation 13920. Up to 476 conditions per place. [2024-06-27 22:22:34,020 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 141 selfloop transitions, 56 changer transitions 0/462 dead transitions. [2024-06-27 22:22:34,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 462 transitions, 7102 flow [2024-06-27 22:22:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:22:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:22:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-06-27 22:22:34,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-06-27 22:22:34,021 INFO L175 Difference]: Start difference. First operand has 393 places, 714 transitions, 9970 flow. Second operand 4 states and 112 transitions. [2024-06-27 22:22:34,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 462 transitions, 7102 flow [2024-06-27 22:22:34,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 462 transitions, 6055 flow, removed 86 selfloop flow, removed 68 redundant places. [2024-06-27 22:22:34,846 INFO L231 Difference]: Finished difference. Result has 330 places, 450 transitions, 5809 flow [2024-06-27 22:22:34,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5809, PETRI_PLACES=330, PETRI_TRANSITIONS=450} [2024-06-27 22:22:34,846 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-27 22:22:34,846 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 450 transitions, 5809 flow [2024-06-27 22:22:34,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:34,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:34,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:34,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:22:34,847 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 22:22:34,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 948262937, now seen corresponding path program 1 times [2024-06-27 22:22:34,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:34,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425111243] [2024-06-27 22:22:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425111243] [2024-06-27 22:22:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425111243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861256978] [2024-06-27 22:22:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:36,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:36,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 450 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 22:22:36,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:36,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:36,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:37,328 INFO L124 PetriNetUnfolderBase]: 1058/1950 cut-off events. [2024-06-27 22:22:37,328 INFO L125 PetriNetUnfolderBase]: For 205422/205422 co-relation queries the response was YES. [2024-06-27 22:22:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16135 conditions, 1950 events. 1058/1950 cut-off events. For 205422/205422 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11093 event pairs, 119 based on Foata normal form. 1/1861 useless extension candidates. Maximal degree in co-relation 15976. Up to 1606 conditions per place. [2024-06-27 22:22:37,350 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 368 selfloop transitions, 94 changer transitions 0/471 dead transitions. [2024-06-27 22:22:37,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 471 transitions, 7101 flow [2024-06-27 22:22:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:22:37,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42657342657342656 [2024-06-27 22:22:37,351 INFO L175 Difference]: Start difference. First operand has 330 places, 450 transitions, 5809 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:22:37,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 471 transitions, 7101 flow [2024-06-27 22:22:38,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 471 transitions, 7051 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:22:38,326 INFO L231 Difference]: Finished difference. Result has 338 places, 454 transitions, 6035 flow [2024-06-27 22:22:38,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5759, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6035, PETRI_PLACES=338, PETRI_TRANSITIONS=454} [2024-06-27 22:22:38,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-27 22:22:38,327 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 454 transitions, 6035 flow [2024-06-27 22:22:38,327 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 22:22:38,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:38,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:22:38,327 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 22:22:38,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1463155955, now seen corresponding path program 2 times [2024-06-27 22:22:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556149423] [2024-06-27 22:22:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:38,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:39,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:39,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556149423] [2024-06-27 22:22:39,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556149423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:39,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:39,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798404659] [2024-06-27 22:22:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:39,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:39,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 454 transitions, 6035 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 22:22:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:39,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:40,700 INFO L124 PetriNetUnfolderBase]: 1056/1944 cut-off events. [2024-06-27 22:22:40,700 INFO L125 PetriNetUnfolderBase]: For 201025/201025 co-relation queries the response was YES. [2024-06-27 22:22:40,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 1944 events. 1056/1944 cut-off events. For 201025/201025 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11056 event pairs, 147 based on Foata normal form. 1/1858 useless extension candidates. Maximal degree in co-relation 16085. Up to 1628 conditions per place. [2024-06-27 22:22:40,723 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 381 selfloop transitions, 80 changer transitions 0/470 dead transitions. [2024-06-27 22:22:40,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 470 transitions, 7029 flow [2024-06-27 22:22:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:22:40,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195804195804196 [2024-06-27 22:22:40,724 INFO L175 Difference]: Start difference. First operand has 338 places, 454 transitions, 6035 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:22:40,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 470 transitions, 7029 flow [2024-06-27 22:22:41,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 470 transitions, 6829 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:41,761 INFO L231 Difference]: Finished difference. Result has 339 places, 454 transitions, 6004 flow [2024-06-27 22:22:41,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6004, PETRI_PLACES=339, PETRI_TRANSITIONS=454} [2024-06-27 22:22:41,761 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-27 22:22:41,761 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 454 transitions, 6004 flow [2024-06-27 22:22:41,761 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 22:22:41,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:41,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:41,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:22:41,762 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 22:22:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1466903855, now seen corresponding path program 3 times [2024-06-27 22:22:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462869044] [2024-06-27 22:22:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462869044] [2024-06-27 22:22:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462869044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:43,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:43,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640773101] [2024-06-27 22:22:43,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:43,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:43,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:43,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:43,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 454 transitions, 6004 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 22:22:43,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:43,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:43,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:44,144 INFO L124 PetriNetUnfolderBase]: 1062/1953 cut-off events. [2024-06-27 22:22:44,144 INFO L125 PetriNetUnfolderBase]: For 204564/204564 co-relation queries the response was YES. [2024-06-27 22:22:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16390 conditions, 1953 events. 1062/1953 cut-off events. For 204564/204564 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11084 event pairs, 147 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 16226. Up to 1597 conditions per place. [2024-06-27 22:22:44,167 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 368 selfloop transitions, 95 changer transitions 0/472 dead transitions. [2024-06-27 22:22:44,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 472 transitions, 7052 flow [2024-06-27 22:22:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:22:44,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44358974358974357 [2024-06-27 22:22:44,168 INFO L175 Difference]: Start difference. First operand has 339 places, 454 transitions, 6004 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:22:44,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 472 transitions, 7052 flow [2024-06-27 22:22:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 472 transitions, 6876 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:22:44,855 INFO L231 Difference]: Finished difference. Result has 339 places, 456 transitions, 6072 flow [2024-06-27 22:22:44,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6072, PETRI_PLACES=339, PETRI_TRANSITIONS=456} [2024-06-27 22:22:44,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-27 22:22:44,855 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 456 transitions, 6072 flow [2024-06-27 22:22:44,856 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 22:22:44,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:44,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:44,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:22:44,856 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 22:22:44,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:44,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1753947111, now seen corresponding path program 1 times [2024-06-27 22:22:44,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:44,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536427046] [2024-06-27 22:22:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:44,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:46,083 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 22:22:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536427046] [2024-06-27 22:22:46,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536427046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:46,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:46,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:46,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316626039] [2024-06-27 22:22:46,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:46,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:46,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:46,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:46,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:46,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:46,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 456 transitions, 6072 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 22:22:46,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:46,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:46,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:47,016 INFO L124 PetriNetUnfolderBase]: 1067/1963 cut-off events. [2024-06-27 22:22:47,016 INFO L125 PetriNetUnfolderBase]: For 211390/211390 co-relation queries the response was YES. [2024-06-27 22:22:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16556 conditions, 1963 events. 1067/1963 cut-off events. For 211390/211390 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11163 event pairs, 129 based on Foata normal form. 1/1876 useless extension candidates. Maximal degree in co-relation 16391. Up to 1680 conditions per place. [2024-06-27 22:22:47,038 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 404 selfloop transitions, 61 changer transitions 0/474 dead transitions. [2024-06-27 22:22:47,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 474 transitions, 7112 flow [2024-06-27 22:22:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:22:47,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-06-27 22:22:47,039 INFO L175 Difference]: Start difference. First operand has 339 places, 456 transitions, 6072 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:22:47,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 474 transitions, 7112 flow [2024-06-27 22:22:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 474 transitions, 6894 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:48,055 INFO L231 Difference]: Finished difference. Result has 341 places, 458 transitions, 6018 flow [2024-06-27 22:22:48,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5854, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6018, PETRI_PLACES=341, PETRI_TRANSITIONS=458} [2024-06-27 22:22:48,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-27 22:22:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 458 transitions, 6018 flow [2024-06-27 22:22:48,056 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 22:22:48,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:48,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:22:48,056 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 22:22:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1611688115, now seen corresponding path program 4 times [2024-06-27 22:22:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626455355] [2024-06-27 22:22:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626455355] [2024-06-27 22:22:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626455355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:22:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988261585] [2024-06-27 22:22:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:49,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:22:49,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:22:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:22:49,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:49,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 458 transitions, 6018 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 22:22:49,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:49,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:49,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:50,698 INFO L124 PetriNetUnfolderBase]: 1081/1989 cut-off events. [2024-06-27 22:22:50,699 INFO L125 PetriNetUnfolderBase]: For 220948/220948 co-relation queries the response was YES. [2024-06-27 22:22:50,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16842 conditions, 1989 events. 1081/1989 cut-off events. For 220948/220948 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 11381 event pairs, 134 based on Foata normal form. 1/1899 useless extension candidates. Maximal degree in co-relation 16676. Up to 1588 conditions per place. [2024-06-27 22:22:50,721 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 356 selfloop transitions, 114 changer transitions 0/479 dead transitions. [2024-06-27 22:22:50,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 479 transitions, 7358 flow [2024-06-27 22:22:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:22:50,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-06-27 22:22:50,722 INFO L175 Difference]: Start difference. First operand has 341 places, 458 transitions, 6018 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:22:50,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 479 transitions, 7358 flow [2024-06-27 22:22:51,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 479 transitions, 7216 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:51,918 INFO L231 Difference]: Finished difference. Result has 344 places, 462 transitions, 6207 flow [2024-06-27 22:22:51,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6207, PETRI_PLACES=344, PETRI_TRANSITIONS=462} [2024-06-27 22:22:51,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-27 22:22:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 462 transitions, 6207 flow [2024-06-27 22:22:51,919 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 22:22:51,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:51,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:51,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:22:51,919 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 22:22:51,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1611694625, now seen corresponding path program 5 times [2024-06-27 22:22:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:51,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099216943] [2024-06-27 22:22:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:53,355 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 22:22:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099216943] [2024-06-27 22:22:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099216943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806406901] [2024-06-27 22:22:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:53,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:53,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 462 transitions, 6207 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 22:22:53,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:53,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:54,312 INFO L124 PetriNetUnfolderBase]: 1087/2001 cut-off events. [2024-06-27 22:22:54,313 INFO L125 PetriNetUnfolderBase]: For 226654/226654 co-relation queries the response was YES. [2024-06-27 22:22:54,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17116 conditions, 2001 events. 1087/2001 cut-off events. For 226654/226654 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11501 event pairs, 134 based on Foata normal form. 1/1910 useless extension candidates. Maximal degree in co-relation 16949. Up to 1571 conditions per place. [2024-06-27 22:22:54,337 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 359 selfloop transitions, 113 changer transitions 0/481 dead transitions. [2024-06-27 22:22:54,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 481 transitions, 7511 flow [2024-06-27 22:22:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:22:54,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:22:54,338 INFO L175 Difference]: Start difference. First operand has 344 places, 462 transitions, 6207 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:22:54,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 481 transitions, 7511 flow [2024-06-27 22:22:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 481 transitions, 7318 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:22:55,326 INFO L231 Difference]: Finished difference. Result has 348 places, 464 transitions, 6297 flow [2024-06-27 22:22:55,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6026, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6297, PETRI_PLACES=348, PETRI_TRANSITIONS=464} [2024-06-27 22:22:55,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-27 22:22:55,327 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 464 transitions, 6297 flow [2024-06-27 22:22:55,327 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 22:22:55,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:55,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:22:55,327 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 22:22:55,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1611925513, now seen corresponding path program 2 times [2024-06-27 22:22:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924795834] [2024-06-27 22:22:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:56,683 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 22:22:56,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:56,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924795834] [2024-06-27 22:22:56,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924795834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:56,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724884371] [2024-06-27 22:22:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:56,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:56,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:56,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:22:56,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 464 transitions, 6297 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 22:22:56,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:56,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:22:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:57,517 INFO L124 PetriNetUnfolderBase]: 1106/2032 cut-off events. [2024-06-27 22:22:57,517 INFO L125 PetriNetUnfolderBase]: For 242503/242503 co-relation queries the response was YES. [2024-06-27 22:22:57,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17716 conditions, 2032 events. 1106/2032 cut-off events. For 242503/242503 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11665 event pairs, 129 based on Foata normal form. 1/1942 useless extension candidates. Maximal degree in co-relation 17547. Up to 1675 conditions per place. [2024-06-27 22:22:57,540 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 392 selfloop transitions, 87 changer transitions 0/488 dead transitions. [2024-06-27 22:22:57,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 488 transitions, 7893 flow [2024-06-27 22:22:57,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:22:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:22:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:22:57,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44358974358974357 [2024-06-27 22:22:57,541 INFO L175 Difference]: Start difference. First operand has 348 places, 464 transitions, 6297 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:22:57,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 488 transitions, 7893 flow [2024-06-27 22:22:58,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 488 transitions, 7666 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:22:58,675 INFO L231 Difference]: Finished difference. Result has 350 places, 470 transitions, 6357 flow [2024-06-27 22:22:58,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6070, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6357, PETRI_PLACES=350, PETRI_TRANSITIONS=470} [2024-06-27 22:22:58,675 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-27 22:22:58,675 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 470 transitions, 6357 flow [2024-06-27 22:22:58,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:58,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:58,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:22:58,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:22:58,676 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 22:22:58,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1611694873, now seen corresponding path program 3 times [2024-06-27 22:22:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677352927] [2024-06-27 22:22:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677352927] [2024-06-27 22:23:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677352927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:00,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153395063] [2024-06-27 22:23:00,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:00,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:00,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:00,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 470 transitions, 6357 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 22:23:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:00,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:00,863 INFO L124 PetriNetUnfolderBase]: 1104/2029 cut-off events. [2024-06-27 22:23:00,863 INFO L125 PetriNetUnfolderBase]: For 239913/239913 co-relation queries the response was YES. [2024-06-27 22:23:00,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17565 conditions, 2029 events. 1104/2029 cut-off events. For 239913/239913 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11648 event pairs, 129 based on Foata normal form. 1/1939 useless extension candidates. Maximal degree in co-relation 17395. Up to 1673 conditions per place. [2024-06-27 22:23:00,884 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 395 selfloop transitions, 83 changer transitions 0/487 dead transitions. [2024-06-27 22:23:00,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 487 transitions, 7627 flow [2024-06-27 22:23:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:23:00,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44358974358974357 [2024-06-27 22:23:00,885 INFO L175 Difference]: Start difference. First operand has 350 places, 470 transitions, 6357 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:23:00,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 487 transitions, 7627 flow [2024-06-27 22:23:01,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 487 transitions, 7499 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:01,779 INFO L231 Difference]: Finished difference. Result has 355 places, 470 transitions, 6402 flow [2024-06-27 22:23:01,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6229, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6402, PETRI_PLACES=355, PETRI_TRANSITIONS=470} [2024-06-27 22:23:01,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 22:23:01,780 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 470 transitions, 6402 flow [2024-06-27 22:23:01,780 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 22:23:01,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:01,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:01,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:23:01,780 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 22:23:01,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1608923841, now seen corresponding path program 4 times [2024-06-27 22:23:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:01,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115522541] [2024-06-27 22:23:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:03,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115522541] [2024-06-27 22:23:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115522541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:03,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167779822] [2024-06-27 22:23:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:03,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:03,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:03,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 470 transitions, 6402 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 22:23:03,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:03,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:03,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:04,137 INFO L124 PetriNetUnfolderBase]: 1102/2026 cut-off events. [2024-06-27 22:23:04,137 INFO L125 PetriNetUnfolderBase]: For 237395/237395 co-relation queries the response was YES. [2024-06-27 22:23:04,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17521 conditions, 2026 events. 1102/2026 cut-off events. For 237395/237395 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11637 event pairs, 129 based on Foata normal form. 1/1936 useless extension candidates. Maximal degree in co-relation 17349. Up to 1671 conditions per place. [2024-06-27 22:23:04,157 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 383 selfloop transitions, 94 changer transitions 0/486 dead transitions. [2024-06-27 22:23:04,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 486 transitions, 7444 flow [2024-06-27 22:23:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:23:04,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195804195804196 [2024-06-27 22:23:04,159 INFO L175 Difference]: Start difference. First operand has 355 places, 470 transitions, 6402 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:23:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 486 transitions, 7444 flow [2024-06-27 22:23:04,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 486 transitions, 7221 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:04,959 INFO L231 Difference]: Finished difference. Result has 357 places, 470 transitions, 6374 flow [2024-06-27 22:23:04,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6179, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6374, PETRI_PLACES=357, PETRI_TRANSITIONS=470} [2024-06-27 22:23:04,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-27 22:23:04,960 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 470 transitions, 6374 flow [2024-06-27 22:23:04,960 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 22:23:04,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:04,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:04,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:23:04,960 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 22:23:04,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1608923531, now seen corresponding path program 1 times [2024-06-27 22:23:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:04,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801520138] [2024-06-27 22:23:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:06,136 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 22:23:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801520138] [2024-06-27 22:23:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801520138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213755701] [2024-06-27 22:23:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:06,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:23:06,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 470 transitions, 6374 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 22:23:06,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:06,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:23:06,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:06,861 INFO L124 PetriNetUnfolderBase]: 879/1722 cut-off events. [2024-06-27 22:23:06,861 INFO L125 PetriNetUnfolderBase]: For 238958/238966 co-relation queries the response was YES. [2024-06-27 22:23:06,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15261 conditions, 1722 events. 879/1722 cut-off events. For 238958/238966 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10239 event pairs, 140 based on Foata normal form. 1/1622 useless extension candidates. Maximal degree in co-relation 15088. Up to 1405 conditions per place. [2024-06-27 22:23:06,880 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 403 selfloop transitions, 62 changer transitions 0/485 dead transitions. [2024-06-27 22:23:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 485 transitions, 7362 flow [2024-06-27 22:23:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:23:06,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43874643874643876 [2024-06-27 22:23:06,882 INFO L175 Difference]: Start difference. First operand has 357 places, 470 transitions, 6374 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:23:06,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 485 transitions, 7362 flow [2024-06-27 22:23:07,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 485 transitions, 7163 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:23:07,715 INFO L231 Difference]: Finished difference. Result has 356 places, 472 transitions, 6339 flow [2024-06-27 22:23:07,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6175, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6339, PETRI_PLACES=356, PETRI_TRANSITIONS=472} [2024-06-27 22:23:07,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-27 22:23:07,716 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 472 transitions, 6339 flow [2024-06-27 22:23:07,716 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 22:23:07,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:07,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:07,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:23:07,716 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 22:23:07,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1608932459, now seen corresponding path program 6 times [2024-06-27 22:23:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836797433] [2024-06-27 22:23:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:09,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836797433] [2024-06-27 22:23:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836797433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680723826] [2024-06-27 22:23:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:09,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 472 transitions, 6339 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 22:23:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:10,303 INFO L124 PetriNetUnfolderBase]: 1105/2030 cut-off events. [2024-06-27 22:23:10,303 INFO L125 PetriNetUnfolderBase]: For 238289/238289 co-relation queries the response was YES. [2024-06-27 22:23:10,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 2030 events. 1105/2030 cut-off events. For 238289/238289 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11661 event pairs, 133 based on Foata normal form. 1/1939 useless extension candidates. Maximal degree in co-relation 17302. Up to 1601 conditions per place. [2024-06-27 22:23:10,325 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 353 selfloop transitions, 126 changer transitions 0/488 dead transitions. [2024-06-27 22:23:10,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 488 transitions, 7385 flow [2024-06-27 22:23:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:23:10,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:23:10,327 INFO L175 Difference]: Start difference. First operand has 356 places, 472 transitions, 6339 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:23:10,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 488 transitions, 7385 flow [2024-06-27 22:23:11,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 488 transitions, 7225 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:11,220 INFO L231 Difference]: Finished difference. Result has 360 places, 472 transitions, 6438 flow [2024-06-27 22:23:11,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6179, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6438, PETRI_PLACES=360, PETRI_TRANSITIONS=472} [2024-06-27 22:23:11,221 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-27 22:23:11,221 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 472 transitions, 6438 flow [2024-06-27 22:23:11,221 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 22:23:11,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:11,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:11,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:23:11,221 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 22:23:11,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:11,222 INFO L85 PathProgramCache]: Analyzing trace with hash -529237927, now seen corresponding path program 5 times [2024-06-27 22:23:11,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:11,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006412955] [2024-06-27 22:23:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006412955] [2024-06-27 22:23:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006412955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:12,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549903652] [2024-06-27 22:23:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:12,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:12,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 472 transitions, 6438 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 22:23:12,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:12,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:12,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:13,446 INFO L124 PetriNetUnfolderBase]: 1117/2053 cut-off events. [2024-06-27 22:23:13,446 INFO L125 PetriNetUnfolderBase]: For 249708/249708 co-relation queries the response was YES. [2024-06-27 22:23:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17876 conditions, 2053 events. 1117/2053 cut-off events. For 249708/249708 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11819 event pairs, 127 based on Foata normal form. 1/1961 useless extension candidates. Maximal degree in co-relation 17701. Up to 1588 conditions per place. [2024-06-27 22:23:13,467 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 376 selfloop transitions, 108 changer transitions 0/493 dead transitions. [2024-06-27 22:23:13,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 493 transitions, 7812 flow [2024-06-27 22:23:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:23:13,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:23:13,468 INFO L175 Difference]: Start difference. First operand has 360 places, 472 transitions, 6438 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:23:13,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 493 transitions, 7812 flow [2024-06-27 22:23:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 493 transitions, 7522 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:23:14,276 INFO L231 Difference]: Finished difference. Result has 359 places, 476 transitions, 6450 flow [2024-06-27 22:23:14,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6450, PETRI_PLACES=359, PETRI_TRANSITIONS=476} [2024-06-27 22:23:14,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-27 22:23:14,276 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 476 transitions, 6450 flow [2024-06-27 22:23:14,276 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 22:23:14,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:14,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:23:14,277 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 22:23:14,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1469373501, now seen corresponding path program 7 times [2024-06-27 22:23:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117657640] [2024-06-27 22:23:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:15,745 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 22:23:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117657640] [2024-06-27 22:23:15,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117657640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:15,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:15,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463237567] [2024-06-27 22:23:15,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:15,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:15,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 476 transitions, 6450 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 22:23:15,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:15,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:15,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:16,781 INFO L124 PetriNetUnfolderBase]: 1139/2088 cut-off events. [2024-06-27 22:23:16,781 INFO L125 PetriNetUnfolderBase]: For 268199/268199 co-relation queries the response was YES. [2024-06-27 22:23:16,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18497 conditions, 2088 events. 1139/2088 cut-off events. For 268199/268199 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12066 event pairs, 133 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 18321. Up to 1569 conditions per place. [2024-06-27 22:23:16,806 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 359 selfloop transitions, 132 changer transitions 0/500 dead transitions. [2024-06-27 22:23:16,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 500 transitions, 8150 flow [2024-06-27 22:23:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:23:16,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:23:16,807 INFO L175 Difference]: Start difference. First operand has 359 places, 476 transitions, 6450 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:23:16,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 500 transitions, 8150 flow [2024-06-27 22:23:17,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 500 transitions, 7930 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:17,694 INFO L231 Difference]: Finished difference. Result has 363 places, 482 transitions, 6654 flow [2024-06-27 22:23:17,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6230, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6654, PETRI_PLACES=363, PETRI_TRANSITIONS=482} [2024-06-27 22:23:17,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 22:23:17,694 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 482 transitions, 6654 flow [2024-06-27 22:23:17,694 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 22:23:17,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:17,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:17,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:23:17,695 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 22:23:17,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:17,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1460791833, now seen corresponding path program 2 times [2024-06-27 22:23:17,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:17,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114683971] [2024-06-27 22:23:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:17,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114683971] [2024-06-27 22:23:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114683971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:19,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:19,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295689387] [2024-06-27 22:23:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:19,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:19,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:19,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:23:19,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 482 transitions, 6654 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 22:23:19,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:19,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:23:19,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:19,848 INFO L124 PetriNetUnfolderBase]: 927/1798 cut-off events. [2024-06-27 22:23:19,848 INFO L125 PetriNetUnfolderBase]: For 277480/277488 co-relation queries the response was YES. [2024-06-27 22:23:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 1798 events. 927/1798 cut-off events. For 277480/277488 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10660 event pairs, 136 based on Foata normal form. 1/1689 useless extension candidates. Maximal degree in co-relation 16405. Up to 1384 conditions per place. [2024-06-27 22:23:19,869 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 369 selfloop transitions, 109 changer transitions 0/498 dead transitions. [2024-06-27 22:23:19,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 498 transitions, 7934 flow [2024-06-27 22:23:19,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:23:19,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-27 22:23:19,870 INFO L175 Difference]: Start difference. First operand has 363 places, 482 transitions, 6654 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:23:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 498 transitions, 7934 flow [2024-06-27 22:23:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 498 transitions, 7580 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:20,729 INFO L231 Difference]: Finished difference. Result has 364 places, 486 transitions, 6587 flow [2024-06-27 22:23:20,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6300, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6587, PETRI_PLACES=364, PETRI_TRANSITIONS=486} [2024-06-27 22:23:20,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-27 22:23:20,729 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 486 transitions, 6587 flow [2024-06-27 22:23:20,729 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 22:23:20,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:20,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:20,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:23:20,730 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 22:23:20,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:20,730 INFO L85 PathProgramCache]: Analyzing trace with hash -529244685, now seen corresponding path program 8 times [2024-06-27 22:23:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554823523] [2024-06-27 22:23:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554823523] [2024-06-27 22:23:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554823523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488153334] [2024-06-27 22:23:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:22,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:22,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 486 transitions, 6587 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 22:23:22,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:22,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:22,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:23,280 INFO L124 PetriNetUnfolderBase]: 1149/2104 cut-off events. [2024-06-27 22:23:23,280 INFO L125 PetriNetUnfolderBase]: For 275402/275402 co-relation queries the response was YES. [2024-06-27 22:23:23,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18497 conditions, 2104 events. 1149/2104 cut-off events. For 275402/275402 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12159 event pairs, 133 based on Foata normal form. 1/2010 useless extension candidates. Maximal degree in co-relation 18321. Up to 1586 conditions per place. [2024-06-27 22:23:23,306 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 358 selfloop transitions, 136 changer transitions 0/503 dead transitions. [2024-06-27 22:23:23,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 503 transitions, 7911 flow [2024-06-27 22:23:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:23:23,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:23:23,307 INFO L175 Difference]: Start difference. First operand has 364 places, 486 transitions, 6587 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:23:23,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 503 transitions, 7911 flow [2024-06-27 22:23:24,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 503 transitions, 7716 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:24,200 INFO L231 Difference]: Finished difference. Result has 370 places, 486 transitions, 6670 flow [2024-06-27 22:23:24,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6670, PETRI_PLACES=370, PETRI_TRANSITIONS=486} [2024-06-27 22:23:24,200 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-27 22:23:24,201 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 486 transitions, 6670 flow [2024-06-27 22:23:24,201 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 22:23:24,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:24,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:23:24,201 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 22:23:24,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1469142861, now seen corresponding path program 9 times [2024-06-27 22:23:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:24,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060496138] [2024-06-27 22:23:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:25,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:25,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060496138] [2024-06-27 22:23:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060496138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:25,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160177557] [2024-06-27 22:23:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:25,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:25,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 486 transitions, 6670 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 22:23:25,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:25,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:26,659 INFO L124 PetriNetUnfolderBase]: 1155/2116 cut-off events. [2024-06-27 22:23:26,659 INFO L125 PetriNetUnfolderBase]: For 280529/280529 co-relation queries the response was YES. [2024-06-27 22:23:26,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18769 conditions, 2116 events. 1155/2116 cut-off events. For 280529/280529 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12252 event pairs, 133 based on Foata normal form. 1/2021 useless extension candidates. Maximal degree in co-relation 18590. Up to 1593 conditions per place. [2024-06-27 22:23:26,686 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 364 selfloop transitions, 132 changer transitions 0/505 dead transitions. [2024-06-27 22:23:26,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 505 transitions, 8044 flow [2024-06-27 22:23:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:23:26,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:23:26,687 INFO L175 Difference]: Start difference. First operand has 370 places, 486 transitions, 6670 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:23:26,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 505 transitions, 8044 flow [2024-06-27 22:23:27,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 505 transitions, 7774 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:27,700 INFO L231 Difference]: Finished difference. Result has 372 places, 488 transitions, 6714 flow [2024-06-27 22:23:27,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6404, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6714, PETRI_PLACES=372, PETRI_TRANSITIONS=488} [2024-06-27 22:23:27,701 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-27 22:23:27,701 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 488 transitions, 6714 flow [2024-06-27 22:23:27,701 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 22:23:27,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:27,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:27,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:23:27,702 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 22:23:27,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash -520955037, now seen corresponding path program 3 times [2024-06-27 22:23:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85428543] [2024-06-27 22:23:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:27,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85428543] [2024-06-27 22:23:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85428543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:29,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:29,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128137976] [2024-06-27 22:23:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:29,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:29,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:29,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:23:29,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 488 transitions, 6714 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 22:23:29,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:29,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:23:29,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:29,879 INFO L124 PetriNetUnfolderBase]: 941/1824 cut-off events. [2024-06-27 22:23:29,879 INFO L125 PetriNetUnfolderBase]: For 289364/289372 co-relation queries the response was YES. [2024-06-27 22:23:29,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16698 conditions, 1824 events. 941/1824 cut-off events. For 289364/289372 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10861 event pairs, 136 based on Foata normal form. 1/1713 useless extension candidates. Maximal degree in co-relation 16518. Up to 1404 conditions per place. [2024-06-27 22:23:29,913 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 393 selfloop transitions, 92 changer transitions 0/505 dead transitions. [2024-06-27 22:23:29,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 505 transitions, 8254 flow [2024-06-27 22:23:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:23:29,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-27 22:23:29,914 INFO L175 Difference]: Start difference. First operand has 372 places, 488 transitions, 6714 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:23:29,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 505 transitions, 8254 flow [2024-06-27 22:23:30,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 505 transitions, 7986 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:30,982 INFO L231 Difference]: Finished difference. Result has 373 places, 492 transitions, 6693 flow [2024-06-27 22:23:30,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6446, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6693, PETRI_PLACES=373, PETRI_TRANSITIONS=492} [2024-06-27 22:23:30,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-27 22:23:30,982 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 492 transitions, 6693 flow [2024-06-27 22:23:30,982 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 22:23:30,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:30,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:30,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:23:30,983 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 22:23:30,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -520667047, now seen corresponding path program 6 times [2024-06-27 22:23:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842986144] [2024-06-27 22:23:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842986144] [2024-06-27 22:23:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842986144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453050095] [2024-06-27 22:23:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:32,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:32,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 492 transitions, 6693 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 22:23:32,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:32,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:32,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:33,273 INFO L124 PetriNetUnfolderBase]: 1172/2144 cut-off events. [2024-06-27 22:23:33,273 INFO L125 PetriNetUnfolderBase]: For 295897/295897 co-relation queries the response was YES. [2024-06-27 22:23:33,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19042 conditions, 2144 events. 1172/2144 cut-off events. For 295897/295897 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12463 event pairs, 128 based on Foata normal form. 1/2050 useless extension candidates. Maximal degree in co-relation 18862. Up to 1671 conditions per place. [2024-06-27 22:23:33,300 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 369 selfloop transitions, 133 changer transitions 0/511 dead transitions. [2024-06-27 22:23:33,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 511 transitions, 8071 flow [2024-06-27 22:23:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:23:33,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-27 22:23:33,301 INFO L175 Difference]: Start difference. First operand has 373 places, 492 transitions, 6693 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:23:33,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 511 transitions, 8071 flow [2024-06-27 22:23:34,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 511 transitions, 7932 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:34,478 INFO L231 Difference]: Finished difference. Result has 378 places, 494 transitions, 6858 flow [2024-06-27 22:23:34,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6554, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6858, PETRI_PLACES=378, PETRI_TRANSITIONS=494} [2024-06-27 22:23:34,478 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-27 22:23:34,478 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 494 transitions, 6858 flow [2024-06-27 22:23:34,478 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 22:23:34,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:34,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:34,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:23:34,479 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 22:23:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -529007287, now seen corresponding path program 7 times [2024-06-27 22:23:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565862565] [2024-06-27 22:23:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:35,848 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 22:23:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565862565] [2024-06-27 22:23:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565862565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:35,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:35,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18090747] [2024-06-27 22:23:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:35,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:35,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:35,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 494 transitions, 6858 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 22:23:35,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:35,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:35,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:36,657 INFO L124 PetriNetUnfolderBase]: 1184/2163 cut-off events. [2024-06-27 22:23:36,657 INFO L125 PetriNetUnfolderBase]: For 308546/308546 co-relation queries the response was YES. [2024-06-27 22:23:36,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 2163 events. 1184/2163 cut-off events. For 308546/308546 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12625 event pairs, 128 based on Foata normal form. 1/2069 useless extension candidates. Maximal degree in co-relation 19247. Up to 1685 conditions per place. [2024-06-27 22:23:36,684 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 399 selfloop transitions, 108 changer transitions 0/516 dead transitions. [2024-06-27 22:23:36,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 516 transitions, 8536 flow [2024-06-27 22:23:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:23:36,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:23:36,685 INFO L175 Difference]: Start difference. First operand has 378 places, 494 transitions, 6858 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:23:36,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 516 transitions, 8536 flow [2024-06-27 22:23:37,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 516 transitions, 8282 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:37,911 INFO L231 Difference]: Finished difference. Result has 381 places, 498 transitions, 6898 flow [2024-06-27 22:23:37,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6616, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6898, PETRI_PLACES=381, PETRI_TRANSITIONS=498} [2024-06-27 22:23:37,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-27 22:23:37,912 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 498 transitions, 6898 flow [2024-06-27 22:23:37,912 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 22:23:37,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:37,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:23:37,912 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 22:23:37,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash -528998607, now seen corresponding path program 4 times [2024-06-27 22:23:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:37,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175778885] [2024-06-27 22:23:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:37,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175778885] [2024-06-27 22:23:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175778885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566196932] [2024-06-27 22:23:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:39,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:39,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:23:39,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 498 transitions, 6898 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 22:23:39,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:39,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:23:39,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:39,936 INFO L124 PetriNetUnfolderBase]: 950/1839 cut-off events. [2024-06-27 22:23:39,936 INFO L125 PetriNetUnfolderBase]: For 302459/302467 co-relation queries the response was YES. [2024-06-27 22:23:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16837 conditions, 1839 events. 950/1839 cut-off events. For 302459/302467 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10982 event pairs, 137 based on Foata normal form. 1/1730 useless extension candidates. Maximal degree in co-relation 16654. Up to 1426 conditions per place. [2024-06-27 22:23:39,960 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 404 selfloop transitions, 86 changer transitions 0/510 dead transitions. [2024-06-27 22:23:39,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 510 transitions, 8154 flow [2024-06-27 22:23:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:23:39,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-27 22:23:39,961 INFO L175 Difference]: Start difference. First operand has 381 places, 498 transitions, 6898 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:23:39,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 510 transitions, 8154 flow [2024-06-27 22:23:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 510 transitions, 7946 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:23:41,200 INFO L231 Difference]: Finished difference. Result has 384 places, 498 transitions, 6869 flow [2024-06-27 22:23:41,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6869, PETRI_PLACES=384, PETRI_TRANSITIONS=498} [2024-06-27 22:23:41,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-27 22:23:41,201 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 498 transitions, 6869 flow [2024-06-27 22:23:41,201 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 22:23:41,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:41,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:23:41,201 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 22:23:41,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -520963717, now seen corresponding path program 8 times [2024-06-27 22:23:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:41,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606207950] [2024-06-27 22:23:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:42,573 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 22:23:42,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606207950] [2024-06-27 22:23:42,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606207950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:42,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830897720] [2024-06-27 22:23:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:42,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:42,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:42,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 498 transitions, 6869 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 22:23:42,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:42,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:42,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:43,421 INFO L124 PetriNetUnfolderBase]: 1187/2168 cut-off events. [2024-06-27 22:23:43,421 INFO L125 PetriNetUnfolderBase]: For 309798/309798 co-relation queries the response was YES. [2024-06-27 22:23:43,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19331 conditions, 2168 events. 1187/2168 cut-off events. For 309798/309798 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12647 event pairs, 128 based on Foata normal form. 1/2074 useless extension candidates. Maximal degree in co-relation 19148. Up to 1688 conditions per place. [2024-06-27 22:23:43,448 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 387 selfloop transitions, 122 changer transitions 0/518 dead transitions. [2024-06-27 22:23:43,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 518 transitions, 8519 flow [2024-06-27 22:23:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:23:43,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:23:43,449 INFO L175 Difference]: Start difference. First operand has 384 places, 498 transitions, 6869 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:23:43,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 518 transitions, 8519 flow [2024-06-27 22:23:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 518 transitions, 8298 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:44,838 INFO L231 Difference]: Finished difference. Result has 386 places, 500 transitions, 6930 flow [2024-06-27 22:23:44,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6648, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6930, PETRI_PLACES=386, PETRI_TRANSITIONS=500} [2024-06-27 22:23:44,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-27 22:23:44,839 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 500 transitions, 6930 flow [2024-06-27 22:23:44,839 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 22:23:44,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:44,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:44,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:23:44,839 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 22:23:44,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1766331405, now seen corresponding path program 5 times [2024-06-27 22:23:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702597606] [2024-06-27 22:23:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:46,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:46,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702597606] [2024-06-27 22:23:46,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702597606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:46,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095466779] [2024-06-27 22:23:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:46,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:46,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:46,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:23:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 500 transitions, 6930 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 22:23:46,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:46,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:23:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:46,831 INFO L124 PetriNetUnfolderBase]: 952/1843 cut-off events. [2024-06-27 22:23:46,831 INFO L125 PetriNetUnfolderBase]: For 303821/303829 co-relation queries the response was YES. [2024-06-27 22:23:46,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16796 conditions, 1843 events. 952/1843 cut-off events. For 303821/303829 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11046 event pairs, 137 based on Foata normal form. 1/1734 useless extension candidates. Maximal degree in co-relation 16611. Up to 1431 conditions per place. [2024-06-27 22:23:46,853 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 390 selfloop transitions, 101 changer transitions 0/511 dead transitions. [2024-06-27 22:23:46,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 511 transitions, 7938 flow [2024-06-27 22:23:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:23:46,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-27 22:23:46,855 INFO L175 Difference]: Start difference. First operand has 386 places, 500 transitions, 6930 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:23:46,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 511 transitions, 7938 flow [2024-06-27 22:23:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 511 transitions, 7620 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:48,049 INFO L231 Difference]: Finished difference. Result has 386 places, 500 transitions, 6821 flow [2024-06-27 22:23:48,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6612, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6821, PETRI_PLACES=386, PETRI_TRANSITIONS=500} [2024-06-27 22:23:48,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-27 22:23:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 500 transitions, 6821 flow [2024-06-27 22:23:48,050 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 22:23:48,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:48,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:23:48,051 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 22:23:48,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -528998917, now seen corresponding path program 9 times [2024-06-27 22:23:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971700043] [2024-06-27 22:23:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:48,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:49,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:49,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971700043] [2024-06-27 22:23:49,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971700043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:49,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:49,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928519304] [2024-06-27 22:23:49,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:49,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:49,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:49,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 500 transitions, 6821 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 22:23:49,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:49,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:49,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:50,302 INFO L124 PetriNetUnfolderBase]: 1183/2162 cut-off events. [2024-06-27 22:23:50,302 INFO L125 PetriNetUnfolderBase]: For 302661/302661 co-relation queries the response was YES. [2024-06-27 22:23:50,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19043 conditions, 2162 events. 1183/2162 cut-off events. For 302661/302661 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12599 event pairs, 128 based on Foata normal form. 1/2068 useless extension candidates. Maximal degree in co-relation 18858. Up to 1683 conditions per place. [2024-06-27 22:23:50,328 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 396 selfloop transitions, 112 changer transitions 0/517 dead transitions. [2024-06-27 22:23:50,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 517 transitions, 8189 flow [2024-06-27 22:23:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:23:50,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-27 22:23:50,329 INFO L175 Difference]: Start difference. First operand has 386 places, 500 transitions, 6821 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:23:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 517 transitions, 8189 flow [2024-06-27 22:23:51,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 517 transitions, 7924 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:51,632 INFO L231 Difference]: Finished difference. Result has 387 places, 500 transitions, 6786 flow [2024-06-27 22:23:51,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6556, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6786, PETRI_PLACES=387, PETRI_TRANSITIONS=500} [2024-06-27 22:23:51,633 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 22:23:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 500 transitions, 6786 flow [2024-06-27 22:23:51,633 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 22:23:51,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:51,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:23:51,633 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 22:23:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1766042795, now seen corresponding path program 10 times [2024-06-27 22:23:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390577027] [2024-06-27 22:23:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390577027] [2024-06-27 22:23:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390577027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:53,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270482075] [2024-06-27 22:23:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:53,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:53,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:53,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 500 transitions, 6786 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 22:23:53,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:53,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:53,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:53,914 INFO L124 PetriNetUnfolderBase]: 1181/2159 cut-off events. [2024-06-27 22:23:53,914 INFO L125 PetriNetUnfolderBase]: For 299148/299148 co-relation queries the response was YES. [2024-06-27 22:23:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18859 conditions, 2159 events. 1181/2159 cut-off events. For 299148/299148 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12553 event pairs, 128 based on Foata normal form. 1/2065 useless extension candidates. Maximal degree in co-relation 18672. Up to 1681 conditions per place. [2024-06-27 22:23:53,941 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 387 selfloop transitions, 120 changer transitions 0/516 dead transitions. [2024-06-27 22:23:53,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 516 transitions, 7896 flow [2024-06-27 22:23:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:23:53,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:23:53,942 INFO L175 Difference]: Start difference. First operand has 387 places, 500 transitions, 6786 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:23:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 516 transitions, 7896 flow [2024-06-27 22:23:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 516 transitions, 7646 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:23:55,316 INFO L231 Difference]: Finished difference. Result has 388 places, 500 transitions, 6782 flow [2024-06-27 22:23:55,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6536, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6782, PETRI_PLACES=388, PETRI_TRANSITIONS=500} [2024-06-27 22:23:55,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-27 22:23:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 500 transitions, 6782 flow [2024-06-27 22:23:55,317 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 22:23:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:55,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:23:55,318 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 22:23:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -520963965, now seen corresponding path program 10 times [2024-06-27 22:23:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643968156] [2024-06-27 22:23:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643968156] [2024-06-27 22:23:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643968156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495768348] [2024-06-27 22:23:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:56,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:23:56,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 500 transitions, 6782 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 22:23:56,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:56,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:23:56,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:57,687 INFO L124 PetriNetUnfolderBase]: 1179/2155 cut-off events. [2024-06-27 22:23:57,688 INFO L125 PetriNetUnfolderBase]: For 295010/295010 co-relation queries the response was YES. [2024-06-27 22:23:57,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18723 conditions, 2155 events. 1179/2155 cut-off events. For 295010/295010 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12514 event pairs, 133 based on Foata normal form. 1/2060 useless extension candidates. Maximal degree in co-relation 18535. Up to 1633 conditions per place. [2024-06-27 22:23:57,715 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 353 selfloop transitions, 154 changer transitions 0/516 dead transitions. [2024-06-27 22:23:57,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 516 transitions, 7892 flow [2024-06-27 22:23:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:23:57,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-06-27 22:23:57,716 INFO L175 Difference]: Start difference. First operand has 388 places, 500 transitions, 6782 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:23:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 516 transitions, 7892 flow [2024-06-27 22:23:59,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 516 transitions, 7566 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 22:23:59,103 INFO L231 Difference]: Finished difference. Result has 389 places, 500 transitions, 6770 flow [2024-06-27 22:23:59,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6456, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6770, PETRI_PLACES=389, PETRI_TRANSITIONS=500} [2024-06-27 22:23:59,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-27 22:23:59,104 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 500 transitions, 6770 flow [2024-06-27 22:23:59,104 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 22:23:59,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:59,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:59,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:23:59,104 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 22:23:59,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:59,105 INFO L85 PathProgramCache]: Analyzing trace with hash -520656135, now seen corresponding path program 1 times [2024-06-27 22:23:59,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:59,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209428090] [2024-06-27 22:23:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:59,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:00,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209428090] [2024-06-27 22:24:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209428090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637964726] [2024-06-27 22:24:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:24:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 500 transitions, 6770 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:24:00,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:01,539 INFO L124 PetriNetUnfolderBase]: 910/1801 cut-off events. [2024-06-27 22:24:01,539 INFO L125 PetriNetUnfolderBase]: For 301744/301753 co-relation queries the response was YES. [2024-06-27 22:24:01,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16050 conditions, 1801 events. 910/1801 cut-off events. For 301744/301753 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11062 event pairs, 145 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 15861. Up to 1395 conditions per place. [2024-06-27 22:24:01,562 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 400 selfloop transitions, 34 changer transitions 0/513 dead transitions. [2024-06-27 22:24:01,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 513 transitions, 7692 flow [2024-06-27 22:24:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:24:01,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 22:24:01,563 INFO L175 Difference]: Start difference. First operand has 389 places, 500 transitions, 6770 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:24:01,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 513 transitions, 7692 flow [2024-06-27 22:24:02,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 513 transitions, 7328 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 22:24:02,806 INFO L231 Difference]: Finished difference. Result has 387 places, 502 transitions, 6511 flow [2024-06-27 22:24:02,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6511, PETRI_PLACES=387, PETRI_TRANSITIONS=502} [2024-06-27 22:24:02,806 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 22:24:02,806 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 502 transitions, 6511 flow [2024-06-27 22:24:02,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:02,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:02,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:24:02,807 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 22:24:02,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1223281009, now seen corresponding path program 11 times [2024-06-27 22:24:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364758685] [2024-06-27 22:24:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:02,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:04,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364758685] [2024-06-27 22:24:04,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364758685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:04,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374621763] [2024-06-27 22:24:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:04,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:04,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 502 transitions, 6511 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 22:24:04,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:04,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:05,508 INFO L124 PetriNetUnfolderBase]: 1220/2221 cut-off events. [2024-06-27 22:24:05,509 INFO L125 PetriNetUnfolderBase]: For 337279/337279 co-relation queries the response was YES. [2024-06-27 22:24:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19640 conditions, 2221 events. 1220/2221 cut-off events. For 337279/337279 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 12968 event pairs, 139 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 19450. Up to 1246 conditions per place. [2024-06-27 22:24:05,536 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 278 selfloop transitions, 244 changer transitions 0/531 dead transitions. [2024-06-27 22:24:05,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 531 transitions, 8649 flow [2024-06-27 22:24:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:24:05,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-27 22:24:05,537 INFO L175 Difference]: Start difference. First operand has 387 places, 502 transitions, 6511 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:24:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 531 transitions, 8649 flow [2024-06-27 22:24:07,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 531 transitions, 8564 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:07,070 INFO L231 Difference]: Finished difference. Result has 391 places, 511 transitions, 7234 flow [2024-06-27 22:24:07,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6426, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7234, PETRI_PLACES=391, PETRI_TRANSITIONS=511} [2024-06-27 22:24:07,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-27 22:24:07,071 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 511 transitions, 7234 flow [2024-06-27 22:24:07,071 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 22:24:07,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:07,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:24:07,072 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 22:24:07,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1223280699, now seen corresponding path program 6 times [2024-06-27 22:24:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:07,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063260047] [2024-06-27 22:24:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:08,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063260047] [2024-06-27 22:24:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063260047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004893193] [2024-06-27 22:24:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:08,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:08,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:08,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 511 transitions, 7234 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 22:24:08,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:08,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:08,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:09,268 INFO L124 PetriNetUnfolderBase]: 995/1906 cut-off events. [2024-06-27 22:24:09,268 INFO L125 PetriNetUnfolderBase]: For 346576/346584 co-relation queries the response was YES. [2024-06-27 22:24:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18073 conditions, 1906 events. 995/1906 cut-off events. For 346576/346584 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11422 event pairs, 153 based on Foata normal form. 1/1793 useless extension candidates. Maximal degree in co-relation 17881. Up to 1398 conditions per place. [2024-06-27 22:24:09,293 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 396 selfloop transitions, 112 changer transitions 0/528 dead transitions. [2024-06-27 22:24:09,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 528 transitions, 8904 flow [2024-06-27 22:24:09,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:09,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:24:09,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:09,294 INFO L175 Difference]: Start difference. First operand has 391 places, 511 transitions, 7234 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:24:09,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 528 transitions, 8904 flow [2024-06-27 22:24:10,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 528 transitions, 8647 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:10,766 INFO L231 Difference]: Finished difference. Result has 395 places, 517 transitions, 7312 flow [2024-06-27 22:24:10,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6977, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7312, PETRI_PLACES=395, PETRI_TRANSITIONS=517} [2024-06-27 22:24:10,767 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-27 22:24:10,767 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 517 transitions, 7312 flow [2024-06-27 22:24:10,767 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 22:24:10,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:10,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:24:10,767 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 22:24:10,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2004151299, now seen corresponding path program 7 times [2024-06-27 22:24:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123828268] [2024-06-27 22:24:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:12,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123828268] [2024-06-27 22:24:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123828268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:12,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517656422] [2024-06-27 22:24:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:12,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:12,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 517 transitions, 7312 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 22:24:12,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:12,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:12,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:12,836 INFO L124 PetriNetUnfolderBase]: 1003/1920 cut-off events. [2024-06-27 22:24:12,836 INFO L125 PetriNetUnfolderBase]: For 359517/359525 co-relation queries the response was YES. [2024-06-27 22:24:12,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 1920 events. 1003/1920 cut-off events. For 359517/359525 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11544 event pairs, 153 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 18227. Up to 1408 conditions per place. [2024-06-27 22:24:12,862 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 399 selfloop transitions, 114 changer transitions 0/533 dead transitions. [2024-06-27 22:24:12,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 533 transitions, 9238 flow [2024-06-27 22:24:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:24:12,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 22:24:12,863 INFO L175 Difference]: Start difference. First operand has 395 places, 517 transitions, 7312 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:24:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 533 transitions, 9238 flow [2024-06-27 22:24:14,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 533 transitions, 9110 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:14,308 INFO L231 Difference]: Finished difference. Result has 400 places, 521 transitions, 7493 flow [2024-06-27 22:24:14,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7200, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7493, PETRI_PLACES=400, PETRI_TRANSITIONS=521} [2024-06-27 22:24:14,309 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 357 predicate places. [2024-06-27 22:24:14,309 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 521 transitions, 7493 flow [2024-06-27 22:24:14,309 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 22:24:14,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:14,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:24:14,309 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 22:24:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1223289379, now seen corresponding path program 12 times [2024-06-27 22:24:14,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:14,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132219070] [2024-06-27 22:24:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132219070] [2024-06-27 22:24:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132219070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335663866] [2024-06-27 22:24:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:15,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:15,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 521 transitions, 7493 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 22:24:15,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:15,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:15,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:16,572 INFO L124 PetriNetUnfolderBase]: 1242/2253 cut-off events. [2024-06-27 22:24:16,572 INFO L125 PetriNetUnfolderBase]: For 358842/358842 co-relation queries the response was YES. [2024-06-27 22:24:16,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21164 conditions, 2253 events. 1242/2253 cut-off events. For 358842/358842 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13159 event pairs, 145 based on Foata normal form. 1/2157 useless extension candidates. Maximal degree in co-relation 20969. Up to 1398 conditions per place. [2024-06-27 22:24:16,602 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 338 selfloop transitions, 193 changer transitions 0/540 dead transitions. [2024-06-27 22:24:16,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 540 transitions, 9218 flow [2024-06-27 22:24:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:24:16,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:24:16,603 INFO L175 Difference]: Start difference. First operand has 400 places, 521 transitions, 7493 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:24:16,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 540 transitions, 9218 flow [2024-06-27 22:24:18,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 540 transitions, 8967 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:18,375 INFO L231 Difference]: Finished difference. Result has 406 places, 522 transitions, 7770 flow [2024-06-27 22:24:18,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7242, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7770, PETRI_PLACES=406, PETRI_TRANSITIONS=522} [2024-06-27 22:24:18,376 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 363 predicate places. [2024-06-27 22:24:18,376 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 522 transitions, 7770 flow [2024-06-27 22:24:18,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:18,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:18,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:24:18,377 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 22:24:18,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2004141069, now seen corresponding path program 8 times [2024-06-27 22:24:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917665494] [2024-06-27 22:24:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917665494] [2024-06-27 22:24:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917665494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:19,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063342017] [2024-06-27 22:24:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:19,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:19,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:19,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:19,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 522 transitions, 7770 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 22:24:19,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:19,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:19,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:20,357 INFO L124 PetriNetUnfolderBase]: 999/1913 cut-off events. [2024-06-27 22:24:20,357 INFO L125 PetriNetUnfolderBase]: For 351976/351984 co-relation queries the response was YES. [2024-06-27 22:24:20,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18559 conditions, 1913 events. 999/1913 cut-off events. For 351976/351984 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11464 event pairs, 153 based on Foata normal form. 1/1800 useless extension candidates. Maximal degree in co-relation 18361. Up to 1403 conditions per place. [2024-06-27 22:24:20,382 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 400 selfloop transitions, 113 changer transitions 0/533 dead transitions. [2024-06-27 22:24:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 533 transitions, 9360 flow [2024-06-27 22:24:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:24:20,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 22:24:20,383 INFO L175 Difference]: Start difference. First operand has 406 places, 522 transitions, 7770 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:24:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 533 transitions, 9360 flow [2024-06-27 22:24:21,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 533 transitions, 9075 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:21,871 INFO L231 Difference]: Finished difference. Result has 408 places, 522 transitions, 7716 flow [2024-06-27 22:24:21,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7485, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7716, PETRI_PLACES=408, PETRI_TRANSITIONS=522} [2024-06-27 22:24:21,871 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-27 22:24:21,871 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 522 transitions, 7716 flow [2024-06-27 22:24:21,872 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 22:24:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:21,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:24:21,872 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 22:24:21,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2003843841, now seen corresponding path program 11 times [2024-06-27 22:24:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300395882] [2024-06-27 22:24:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300395882] [2024-06-27 22:24:23,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300395882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:23,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:23,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716756463] [2024-06-27 22:24:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:23,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:23,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:23,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:23,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:23,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 522 transitions, 7716 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 22:24:23,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:23,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:24,240 INFO L124 PetriNetUnfolderBase]: 1246/2261 cut-off events. [2024-06-27 22:24:24,240 INFO L125 PetriNetUnfolderBase]: For 360826/360826 co-relation queries the response was YES. [2024-06-27 22:24:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 2261 events. 1246/2261 cut-off events. For 360826/360826 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13249 event pairs, 152 based on Foata normal form. 1/2163 useless extension candidates. Maximal degree in co-relation 21204. Up to 1368 conditions per place. [2024-06-27 22:24:24,270 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 287 selfloop transitions, 248 changer transitions 0/544 dead transitions. [2024-06-27 22:24:24,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 544 transitions, 9285 flow [2024-06-27 22:24:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:24:24,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 22:24:24,271 INFO L175 Difference]: Start difference. First operand has 408 places, 522 transitions, 7716 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:24:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 544 transitions, 9285 flow [2024-06-27 22:24:25,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 544 transitions, 9053 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:25,842 INFO L231 Difference]: Finished difference. Result has 412 places, 527 transitions, 8259 flow [2024-06-27 22:24:25,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7484, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8259, PETRI_PLACES=412, PETRI_TRANSITIONS=527} [2024-06-27 22:24:25,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-27 22:24:25,843 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 527 transitions, 8259 flow [2024-06-27 22:24:25,843 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 22:24:25,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:25,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:24:25,844 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 22:24:25,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1222992709, now seen corresponding path program 13 times [2024-06-27 22:24:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480119937] [2024-06-27 22:24:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480119937] [2024-06-27 22:24:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480119937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:27,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:27,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139010883] [2024-06-27 22:24:27,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:27,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:27,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:27,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:27,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 527 transitions, 8259 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 22:24:27,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:27,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:27,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:28,643 INFO L124 PetriNetUnfolderBase]: 1251/2269 cut-off events. [2024-06-27 22:24:28,644 INFO L125 PetriNetUnfolderBase]: For 367978/367978 co-relation queries the response was YES. [2024-06-27 22:24:28,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22048 conditions, 2269 events. 1251/2269 cut-off events. For 367978/367978 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 13329 event pairs, 151 based on Foata normal form. 1/2171 useless extension candidates. Maximal degree in co-relation 21847. Up to 1294 conditions per place. [2024-06-27 22:24:28,668 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 292 selfloop transitions, 247 changer transitions 0/548 dead transitions. [2024-06-27 22:24:28,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 548 transitions, 10050 flow [2024-06-27 22:24:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:24:28,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-27 22:24:28,669 INFO L175 Difference]: Start difference. First operand has 412 places, 527 transitions, 8259 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:24:28,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 548 transitions, 10050 flow [2024-06-27 22:24:30,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 548 transitions, 9791 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:30,537 INFO L231 Difference]: Finished difference. Result has 416 places, 529 transitions, 8533 flow [2024-06-27 22:24:30,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8002, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8533, PETRI_PLACES=416, PETRI_TRANSITIONS=529} [2024-06-27 22:24:30,538 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-27 22:24:30,538 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 529 transitions, 8533 flow [2024-06-27 22:24:30,538 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 22:24:30,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:30,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:24:30,538 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 22:24:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1948527637, now seen corresponding path program 9 times [2024-06-27 22:24:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604720815] [2024-06-27 22:24:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:31,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604720815] [2024-06-27 22:24:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604720815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:31,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:31,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686559808] [2024-06-27 22:24:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:31,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:31,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:31,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:31,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 529 transitions, 8533 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 22:24:31,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:31,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:31,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:32,578 INFO L124 PetriNetUnfolderBase]: 998/1920 cut-off events. [2024-06-27 22:24:32,578 INFO L125 PetriNetUnfolderBase]: For 372534/372542 co-relation queries the response was YES. [2024-06-27 22:24:32,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19540 conditions, 1920 events. 998/1920 cut-off events. For 372534/372542 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11601 event pairs, 142 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 19337. Up to 1406 conditions per place. [2024-06-27 22:24:32,601 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 388 selfloop transitions, 134 changer transitions 0/542 dead transitions. [2024-06-27 22:24:32,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 542 transitions, 10185 flow [2024-06-27 22:24:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:24:32,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2024-06-27 22:24:32,602 INFO L175 Difference]: Start difference. First operand has 416 places, 529 transitions, 8533 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:24:32,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 542 transitions, 10185 flow [2024-06-27 22:24:34,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 542 transitions, 9682 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:34,541 INFO L231 Difference]: Finished difference. Result has 417 places, 531 transitions, 8335 flow [2024-06-27 22:24:34,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8030, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8335, PETRI_PLACES=417, PETRI_TRANSITIONS=531} [2024-06-27 22:24:34,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-27 22:24:34,542 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 531 transitions, 8335 flow [2024-06-27 22:24:34,542 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 22:24:34,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:34,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:34,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:24:34,542 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 22:24:34,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1222981797, now seen corresponding path program 2 times [2024-06-27 22:24:34,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:34,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736143125] [2024-06-27 22:24:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736143125] [2024-06-27 22:24:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736143125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:36,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96566846] [2024-06-27 22:24:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:36,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:24:36,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 531 transitions, 8335 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:36,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:36,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:24:36,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:36,887 INFO L124 PetriNetUnfolderBase]: 973/1898 cut-off events. [2024-06-27 22:24:36,887 INFO L125 PetriNetUnfolderBase]: For 379317/379345 co-relation queries the response was YES. [2024-06-27 22:24:36,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19108 conditions, 1898 events. 973/1898 cut-off events. For 379317/379345 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11668 event pairs, 159 based on Foata normal form. 4/1783 useless extension candidates. Maximal degree in co-relation 18905. Up to 1439 conditions per place. [2024-06-27 22:24:36,913 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 409 selfloop transitions, 48 changer transitions 0/542 dead transitions. [2024-06-27 22:24:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 542 transitions, 9301 flow [2024-06-27 22:24:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:24:36,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:24:36,914 INFO L175 Difference]: Start difference. First operand has 417 places, 531 transitions, 8335 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:24:36,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 542 transitions, 9301 flow [2024-06-27 22:24:38,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 542 transitions, 9051 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:38,981 INFO L231 Difference]: Finished difference. Result has 420 places, 533 transitions, 8222 flow [2024-06-27 22:24:38,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8085, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8222, PETRI_PLACES=420, PETRI_TRANSITIONS=533} [2024-06-27 22:24:38,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-27 22:24:38,982 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 533 transitions, 8222 flow [2024-06-27 22:24:38,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:38,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:38,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:38,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:24:38,983 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 22:24:38,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1948517407, now seen corresponding path program 10 times [2024-06-27 22:24:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997512821] [2024-06-27 22:24:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:38,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997512821] [2024-06-27 22:24:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997512821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206093409] [2024-06-27 22:24:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:40,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:40,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 533 transitions, 8222 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 22:24:40,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:40,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:40,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:41,184 INFO L124 PetriNetUnfolderBase]: 1016/1942 cut-off events. [2024-06-27 22:24:41,185 INFO L125 PetriNetUnfolderBase]: For 377722/377730 co-relation queries the response was YES. [2024-06-27 22:24:41,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19384 conditions, 1942 events. 1016/1942 cut-off events. For 377722/377730 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11655 event pairs, 153 based on Foata normal form. 1/1828 useless extension candidates. Maximal degree in co-relation 19179. Up to 1428 conditions per place. [2024-06-27 22:24:41,211 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 391 selfloop transitions, 135 changer transitions 0/546 dead transitions. [2024-06-27 22:24:41,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 546 transitions, 9886 flow [2024-06-27 22:24:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:24:41,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:24:41,212 INFO L175 Difference]: Start difference. First operand has 420 places, 533 transitions, 8222 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:24:41,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 546 transitions, 9886 flow [2024-06-27 22:24:42,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 546 transitions, 9769 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:42,781 INFO L231 Difference]: Finished difference. Result has 421 places, 535 transitions, 8408 flow [2024-06-27 22:24:42,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8105, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8408, PETRI_PLACES=421, PETRI_TRANSITIONS=535} [2024-06-27 22:24:42,781 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-27 22:24:42,781 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 535 transitions, 8408 flow [2024-06-27 22:24:42,782 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 22:24:42,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:42,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:24:42,782 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 22:24:42,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -880694119, now seen corresponding path program 14 times [2024-06-27 22:24:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:42,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229875236] [2024-06-27 22:24:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:42,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229875236] [2024-06-27 22:24:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229875236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:44,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:44,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227667999] [2024-06-27 22:24:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:44,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:44,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:44,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 535 transitions, 8408 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 22:24:44,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:44,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:44,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:45,386 INFO L124 PetriNetUnfolderBase]: 1265/2291 cut-off events. [2024-06-27 22:24:45,387 INFO L125 PetriNetUnfolderBase]: For 376960/376960 co-relation queries the response was YES. [2024-06-27 22:24:45,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22403 conditions, 2291 events. 1265/2291 cut-off events. For 376960/376960 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13448 event pairs, 151 based on Foata normal form. 1/2192 useless extension candidates. Maximal degree in co-relation 22198. Up to 1317 conditions per place. [2024-06-27 22:24:45,416 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 244 selfloop transitions, 301 changer transitions 0/554 dead transitions. [2024-06-27 22:24:45,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 554 transitions, 10193 flow [2024-06-27 22:24:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:24:45,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:24:45,417 INFO L175 Difference]: Start difference. First operand has 421 places, 535 transitions, 8408 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:24:45,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 554 transitions, 10193 flow [2024-06-27 22:24:47,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 554 transitions, 9894 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:24:47,019 INFO L231 Difference]: Finished difference. Result has 427 places, 536 transitions, 8886 flow [2024-06-27 22:24:47,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8886, PETRI_PLACES=427, PETRI_TRANSITIONS=536} [2024-06-27 22:24:47,019 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-27 22:24:47,019 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 536 transitions, 8886 flow [2024-06-27 22:24:47,019 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 22:24:47,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:47,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:47,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:24:47,020 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 22:24:47,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:47,020 INFO L85 PathProgramCache]: Analyzing trace with hash -880683207, now seen corresponding path program 3 times [2024-06-27 22:24:47,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:47,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648786578] [2024-06-27 22:24:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648786578] [2024-06-27 22:24:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648786578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:48,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:48,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:48,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561216428] [2024-06-27 22:24:48,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:48,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:48,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:48,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:48,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:48,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:24:48,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 536 transitions, 8886 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:48,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:48,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:24:48,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:49,378 INFO L124 PetriNetUnfolderBase]: 974/1904 cut-off events. [2024-06-27 22:24:49,378 INFO L125 PetriNetUnfolderBase]: For 386035/386058 co-relation queries the response was YES. [2024-06-27 22:24:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19611 conditions, 1904 events. 974/1904 cut-off events. For 386035/386058 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11734 event pairs, 158 based on Foata normal form. 3/1785 useless extension candidates. Maximal degree in co-relation 19403. Up to 1441 conditions per place. [2024-06-27 22:24:49,403 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 409 selfloop transitions, 52 changer transitions 0/547 dead transitions. [2024-06-27 22:24:49,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 547 transitions, 9864 flow [2024-06-27 22:24:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:24:49,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-27 22:24:49,404 INFO L175 Difference]: Start difference. First operand has 427 places, 536 transitions, 8886 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:24:49,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 547 transitions, 9864 flow [2024-06-27 22:24:51,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 547 transitions, 9335 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 22:24:51,458 INFO L231 Difference]: Finished difference. Result has 426 places, 538 transitions, 8506 flow [2024-06-27 22:24:51,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8506, PETRI_PLACES=426, PETRI_TRANSITIONS=538} [2024-06-27 22:24:51,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 383 predicate places. [2024-06-27 22:24:51,459 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 538 transitions, 8506 flow [2024-06-27 22:24:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:51,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:51,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:24:51,459 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 22:24:51,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2014328661, now seen corresponding path program 4 times [2024-06-27 22:24:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:51,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713551818] [2024-06-27 22:24:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713551818] [2024-06-27 22:24:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713551818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167892823] [2024-06-27 22:24:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:53,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:24:53,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 538 transitions, 8506 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 22:24:53,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:53,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:24:53,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:54,564 INFO L124 PetriNetUnfolderBase]: 1210/2246 cut-off events. [2024-06-27 22:24:54,564 INFO L125 PetriNetUnfolderBase]: For 393432/393436 co-relation queries the response was YES. [2024-06-27 22:24:54,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 2246 events. 1210/2246 cut-off events. For 393432/393436 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13579 event pairs, 206 based on Foata normal form. 2/2141 useless extension candidates. Maximal degree in co-relation 21832. Up to 1830 conditions per place. [2024-06-27 22:24:54,596 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 463 selfloop transitions, 18 changer transitions 0/556 dead transitions. [2024-06-27 22:24:54,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 556 transitions, 9612 flow [2024-06-27 22:24:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:24:54,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149184149184149 [2024-06-27 22:24:54,597 INFO L175 Difference]: Start difference. First operand has 426 places, 538 transitions, 8506 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:24:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 556 transitions, 9612 flow [2024-06-27 22:24:56,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 556 transitions, 9479 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:24:56,673 INFO L231 Difference]: Finished difference. Result has 429 places, 540 transitions, 8458 flow [2024-06-27 22:24:56,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8373, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8458, PETRI_PLACES=429, PETRI_TRANSITIONS=540} [2024-06-27 22:24:56,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-27 22:24:56,674 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 540 transitions, 8458 flow [2024-06-27 22:24:56,674 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 22:24:56,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:56,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:56,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:24:56,674 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 22:24:56,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash -868719129, now seen corresponding path program 11 times [2024-06-27 22:24:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825642452] [2024-06-27 22:24:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:58,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825642452] [2024-06-27 22:24:58,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825642452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:58,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:58,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:58,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681319831] [2024-06-27 22:24:58,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:58,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:58,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:24:58,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 540 transitions, 8458 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 22:24:58,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:58,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:24:58,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:59,244 INFO L124 PetriNetUnfolderBase]: 1275/2319 cut-off events. [2024-06-27 22:24:59,244 INFO L125 PetriNetUnfolderBase]: For 381346/381346 co-relation queries the response was YES. [2024-06-27 22:24:59,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 2319 events. 1275/2319 cut-off events. For 381346/381346 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13750 event pairs, 224 based on Foata normal form. 1/2222 useless extension candidates. Maximal degree in co-relation 22209. Up to 2065 conditions per place. [2024-06-27 22:24:59,273 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 529 selfloop transitions, 18 changer transitions 0/556 dead transitions. [2024-06-27 22:24:59,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 556 transitions, 9656 flow [2024-06-27 22:24:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:24:59,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-06-27 22:24:59,274 INFO L175 Difference]: Start difference. First operand has 429 places, 540 transitions, 8458 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:24:59,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 556 transitions, 9656 flow [2024-06-27 22:25:01,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 556 transitions, 9573 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:01,939 INFO L231 Difference]: Finished difference. Result has 430 places, 540 transitions, 8416 flow [2024-06-27 22:25:01,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8375, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8416, PETRI_PLACES=430, PETRI_TRANSITIONS=540} [2024-06-27 22:25:01,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-27 22:25:01,940 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 540 transitions, 8416 flow [2024-06-27 22:25:01,940 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 22:25:01,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:01,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:01,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:25:01,941 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 22:25:01,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash -762949459, now seen corresponding path program 15 times [2024-06-27 22:25:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620009586] [2024-06-27 22:25:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:03,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620009586] [2024-06-27 22:25:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620009586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300622914] [2024-06-27 22:25:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:03,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:03,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:03,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 540 transitions, 8416 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 22:25:03,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:03,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:03,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:04,339 INFO L124 PetriNetUnfolderBase]: 1301/2351 cut-off events. [2024-06-27 22:25:04,340 INFO L125 PetriNetUnfolderBase]: For 417763/417763 co-relation queries the response was YES. [2024-06-27 22:25:04,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 2351 events. 1301/2351 cut-off events. For 417763/417763 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13840 event pairs, 145 based on Foata normal form. 1/2251 useless extension candidates. Maximal degree in co-relation 22991. Up to 1478 conditions per place. [2024-06-27 22:25:04,373 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 390 selfloop transitions, 169 changer transitions 0/568 dead transitions. [2024-06-27 22:25:04,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 568 transitions, 10982 flow [2024-06-27 22:25:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:25:04,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:25:04,374 INFO L175 Difference]: Start difference. First operand has 430 places, 540 transitions, 8416 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:25:04,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 568 transitions, 10982 flow [2024-06-27 22:25:07,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 568 transitions, 10930 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:25:07,509 INFO L231 Difference]: Finished difference. Result has 430 places, 548 transitions, 8883 flow [2024-06-27 22:25:07,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8364, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8883, PETRI_PLACES=430, PETRI_TRANSITIONS=548} [2024-06-27 22:25:07,510 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-27 22:25:07,510 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 548 transitions, 8883 flow [2024-06-27 22:25:07,510 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 22:25:07,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:07,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:07,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:25:07,510 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 22:25:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -868706667, now seen corresponding path program 5 times [2024-06-27 22:25:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967219458] [2024-06-27 22:25:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:09,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:09,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967219458] [2024-06-27 22:25:09,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967219458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:09,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:09,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:09,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896322744] [2024-06-27 22:25:09,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:09,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:25:09,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 548 transitions, 8883 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 22:25:09,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:09,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:25:09,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:10,345 INFO L124 PetriNetUnfolderBase]: 1236/2289 cut-off events. [2024-06-27 22:25:10,345 INFO L125 PetriNetUnfolderBase]: For 432007/432011 co-relation queries the response was YES. [2024-06-27 22:25:10,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23062 conditions, 2289 events. 1236/2289 cut-off events. For 432007/432011 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13888 event pairs, 208 based on Foata normal form. 2/2183 useless extension candidates. Maximal degree in co-relation 22851. Up to 1864 conditions per place. [2024-06-27 22:25:10,380 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 471 selfloop transitions, 22 changer transitions 0/568 dead transitions. [2024-06-27 22:25:10,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 568 transitions, 10031 flow [2024-06-27 22:25:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:25:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:25:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-27 22:25:10,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41452991452991456 [2024-06-27 22:25:10,381 INFO L175 Difference]: Start difference. First operand has 430 places, 548 transitions, 8883 flow. Second operand 12 states and 194 transitions. [2024-06-27 22:25:10,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 568 transitions, 10031 flow [2024-06-27 22:25:13,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 568 transitions, 9791 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:25:13,054 INFO L231 Difference]: Finished difference. Result has 438 places, 550 transitions, 8740 flow [2024-06-27 22:25:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8643, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8740, PETRI_PLACES=438, PETRI_TRANSITIONS=550} [2024-06-27 22:25:13,054 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-27 22:25:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 550 transitions, 8740 flow [2024-06-27 22:25:13,055 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 22:25:13,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:25:13,055 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 22:25:13,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1928901489, now seen corresponding path program 12 times [2024-06-27 22:25:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639516605] [2024-06-27 22:25:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:14,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:14,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639516605] [2024-06-27 22:25:14,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639516605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:14,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:14,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:14,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362106697] [2024-06-27 22:25:14,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:14,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:14,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:14,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:14,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:25:14,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 550 transitions, 8740 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 22:25:14,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:14,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:25:14,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:15,195 INFO L124 PetriNetUnfolderBase]: 1041/1990 cut-off events. [2024-06-27 22:25:15,195 INFO L125 PetriNetUnfolderBase]: For 425255/425263 co-relation queries the response was YES. [2024-06-27 22:25:15,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20271 conditions, 1990 events. 1041/1990 cut-off events. For 425255/425263 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12051 event pairs, 152 based on Foata normal form. 1/1870 useless extension candidates. Maximal degree in co-relation 20059. Up to 1470 conditions per place. [2024-06-27 22:25:15,224 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 429 selfloop transitions, 113 changer transitions 0/562 dead transitions. [2024-06-27 22:25:15,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 562 transitions, 10176 flow [2024-06-27 22:25:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:25:15,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:25:15,225 INFO L175 Difference]: Start difference. First operand has 438 places, 550 transitions, 8740 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:25:15,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 562 transitions, 10176 flow [2024-06-27 22:25:17,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 562 transitions, 10099 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 22:25:17,499 INFO L231 Difference]: Finished difference. Result has 437 places, 552 transitions, 8930 flow [2024-06-27 22:25:17,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8663, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8930, PETRI_PLACES=437, PETRI_TRANSITIONS=552} [2024-06-27 22:25:17,500 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-27 22:25:17,500 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 552 transitions, 8930 flow [2024-06-27 22:25:17,500 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 22:25:17,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:17,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:17,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:25:17,500 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 22:25:17,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 869111231, now seen corresponding path program 13 times [2024-06-27 22:25:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:17,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877444515] [2024-06-27 22:25:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:17,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877444515] [2024-06-27 22:25:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877444515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:18,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:18,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087985914] [2024-06-27 22:25:18,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:18,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:18,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:18,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:18,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:25:18,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 552 transitions, 8930 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 22:25:18,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:18,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:25:18,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:19,521 INFO L124 PetriNetUnfolderBase]: 1044/1993 cut-off events. [2024-06-27 22:25:19,521 INFO L125 PetriNetUnfolderBase]: For 431273/431281 co-relation queries the response was YES. [2024-06-27 22:25:19,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20495 conditions, 1993 events. 1044/1993 cut-off events. For 431273/431281 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12063 event pairs, 152 based on Foata normal form. 1/1873 useless extension candidates. Maximal degree in co-relation 20283. Up to 1474 conditions per place. [2024-06-27 22:25:19,548 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 435 selfloop transitions, 109 changer transitions 0/564 dead transitions. [2024-06-27 22:25:19,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 564 transitions, 10376 flow [2024-06-27 22:25:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:25:19,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 22:25:19,549 INFO L175 Difference]: Start difference. First operand has 437 places, 552 transitions, 8930 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:25:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 564 transitions, 10376 flow [2024-06-27 22:25:22,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 564 transitions, 10090 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:22,042 INFO L231 Difference]: Finished difference. Result has 439 places, 554 transitions, 8907 flow [2024-06-27 22:25:22,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8652, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8907, PETRI_PLACES=439, PETRI_TRANSITIONS=554} [2024-06-27 22:25:22,042 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-27 22:25:22,042 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 554 transitions, 8907 flow [2024-06-27 22:25:22,042 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 22:25:22,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:22,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:25:22,043 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 22:25:22,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash 860821583, now seen corresponding path program 12 times [2024-06-27 22:25:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:22,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645278851] [2024-06-27 22:25:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645278851] [2024-06-27 22:25:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645278851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:23,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686978400] [2024-06-27 22:25:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:23,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:23,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:23,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 554 transitions, 8907 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 22:25:23,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:23,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:23,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:24,859 INFO L124 PetriNetUnfolderBase]: 1331/2399 cut-off events. [2024-06-27 22:25:24,860 INFO L125 PetriNetUnfolderBase]: For 452542/452542 co-relation queries the response was YES. [2024-06-27 22:25:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24024 conditions, 2399 events. 1331/2399 cut-off events. For 452542/452542 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14147 event pairs, 152 based on Foata normal form. 1/2295 useless extension candidates. Maximal degree in co-relation 23812. Up to 1495 conditions per place. [2024-06-27 22:25:24,889 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 373 selfloop transitions, 194 changer transitions 0/576 dead transitions. [2024-06-27 22:25:24,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 576 transitions, 10845 flow [2024-06-27 22:25:24,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:25:24,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:25:24,890 INFO L175 Difference]: Start difference. First operand has 439 places, 554 transitions, 8907 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:25:24,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 576 transitions, 10845 flow [2024-06-27 22:25:27,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 576 transitions, 10514 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:27,442 INFO L231 Difference]: Finished difference. Result has 442 places, 558 transitions, 9069 flow [2024-06-27 22:25:27,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8576, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9069, PETRI_PLACES=442, PETRI_TRANSITIONS=558} [2024-06-27 22:25:27,443 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-27 22:25:27,443 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 558 transitions, 9069 flow [2024-06-27 22:25:27,443 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 22:25:27,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:27,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:25:27,443 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 22:25:27,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1936936379, now seen corresponding path program 16 times [2024-06-27 22:25:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610178834] [2024-06-27 22:25:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:28,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610178834] [2024-06-27 22:25:28,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610178834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:28,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:28,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090902760] [2024-06-27 22:25:28,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:28,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:28,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:28,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 558 transitions, 9069 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 22:25:28,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:28,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:28,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:29,882 INFO L124 PetriNetUnfolderBase]: 1329/2395 cut-off events. [2024-06-27 22:25:29,882 INFO L125 PetriNetUnfolderBase]: For 451400/451400 co-relation queries the response was YES. [2024-06-27 22:25:29,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24031 conditions, 2395 events. 1329/2395 cut-off events. For 451400/451400 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14117 event pairs, 133 based on Foata normal form. 1/2292 useless extension candidates. Maximal degree in co-relation 23817. Up to 1522 conditions per place. [2024-06-27 22:25:29,916 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 398 selfloop transitions, 170 changer transitions 0/577 dead transitions. [2024-06-27 22:25:29,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 577 transitions, 11215 flow [2024-06-27 22:25:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:25:29,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-27 22:25:29,917 INFO L175 Difference]: Start difference. First operand has 442 places, 558 transitions, 9069 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:25:29,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 577 transitions, 11215 flow [2024-06-27 22:25:32,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 577 transitions, 10911 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:32,030 INFO L231 Difference]: Finished difference. Result has 445 places, 558 transitions, 9110 flow [2024-06-27 22:25:32,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8765, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9110, PETRI_PLACES=445, PETRI_TRANSITIONS=558} [2024-06-27 22:25:32,031 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 402 predicate places. [2024-06-27 22:25:32,031 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 558 transitions, 9110 flow [2024-06-27 22:25:32,031 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 22:25:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:25:32,031 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 22:25:32,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1937233359, now seen corresponding path program 14 times [2024-06-27 22:25:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886741910] [2024-06-27 22:25:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:33,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886741910] [2024-06-27 22:25:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886741910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:33,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:33,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:33,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683101668] [2024-06-27 22:25:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:33,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:33,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:25:33,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 558 transitions, 9110 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 22:25:33,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:33,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:25:33,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:34,104 INFO L124 PetriNetUnfolderBase]: 1047/2001 cut-off events. [2024-06-27 22:25:34,104 INFO L125 PetriNetUnfolderBase]: For 452610/452618 co-relation queries the response was YES. [2024-06-27 22:25:34,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20651 conditions, 2001 events. 1047/2001 cut-off events. For 452610/452618 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12153 event pairs, 142 based on Foata normal form. 1/1883 useless extension candidates. Maximal degree in co-relation 20436. Up to 1481 conditions per place. [2024-06-27 22:25:34,133 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 438 selfloop transitions, 112 changer transitions 0/570 dead transitions. [2024-06-27 22:25:34,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 570 transitions, 10564 flow [2024-06-27 22:25:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:25:34,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 22:25:34,134 INFO L175 Difference]: Start difference. First operand has 445 places, 558 transitions, 9110 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:25:34,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 570 transitions, 10564 flow [2024-06-27 22:25:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 570 transitions, 10226 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:36,558 INFO L231 Difference]: Finished difference. Result has 446 places, 560 transitions, 9031 flow [2024-06-27 22:25:36,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8772, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9031, PETRI_PLACES=446, PETRI_TRANSITIONS=560} [2024-06-27 22:25:36,559 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-27 22:25:36,559 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 560 transitions, 9031 flow [2024-06-27 22:25:36,559 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 22:25:36,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:36,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:25:36,559 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 22:25:36,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 869102303, now seen corresponding path program 13 times [2024-06-27 22:25:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969406140] [2024-06-27 22:25:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969406140] [2024-06-27 22:25:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969406140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:38,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454596773] [2024-06-27 22:25:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:38,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:38,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:38,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 560 transitions, 9031 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 22:25:38,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:38,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:38,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:39,356 INFO L124 PetriNetUnfolderBase]: 1340/2414 cut-off events. [2024-06-27 22:25:39,357 INFO L125 PetriNetUnfolderBase]: For 462349/462349 co-relation queries the response was YES. [2024-06-27 22:25:39,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24007 conditions, 2414 events. 1340/2414 cut-off events. For 462349/462349 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14265 event pairs, 140 based on Foata normal form. 1/2309 useless extension candidates. Maximal degree in co-relation 23792. Up to 1507 conditions per place. [2024-06-27 22:25:39,393 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 381 selfloop transitions, 190 changer transitions 0/580 dead transitions. [2024-06-27 22:25:39,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 580 transitions, 10927 flow [2024-06-27 22:25:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:25:39,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:25:39,394 INFO L175 Difference]: Start difference. First operand has 446 places, 560 transitions, 9031 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:25:39,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 580 transitions, 10927 flow [2024-06-27 22:25:41,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 580 transitions, 10611 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:41,982 INFO L231 Difference]: Finished difference. Result has 449 places, 562 transitions, 9138 flow [2024-06-27 22:25:41,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8715, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9138, PETRI_PLACES=449, PETRI_TRANSITIONS=562} [2024-06-27 22:25:41,983 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-27 22:25:41,983 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 562 transitions, 9138 flow [2024-06-27 22:25:41,983 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 22:25:41,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:41,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:41,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:25:41,983 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 22:25:41,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash 861067351, now seen corresponding path program 17 times [2024-06-27 22:25:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:41,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315553942] [2024-06-27 22:25:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:43,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:43,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315553942] [2024-06-27 22:25:43,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315553942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:43,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676031760] [2024-06-27 22:25:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:43,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:43,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:43,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:43,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 562 transitions, 9138 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 22:25:43,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:43,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:43,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:44,672 INFO L124 PetriNetUnfolderBase]: 1345/2425 cut-off events. [2024-06-27 22:25:44,672 INFO L125 PetriNetUnfolderBase]: For 469606/469606 co-relation queries the response was YES. [2024-06-27 22:25:44,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24245 conditions, 2425 events. 1345/2425 cut-off events. For 469606/469606 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 14337 event pairs, 139 based on Foata normal form. 1/2320 useless extension candidates. Maximal degree in co-relation 24028. Up to 1429 conditions per place. [2024-06-27 22:25:44,708 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 359 selfloop transitions, 215 changer transitions 0/583 dead transitions. [2024-06-27 22:25:44,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 583 transitions, 11356 flow [2024-06-27 22:25:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:25:44,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-27 22:25:44,709 INFO L175 Difference]: Start difference. First operand has 449 places, 562 transitions, 9138 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:25:44,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 583 transitions, 11356 flow [2024-06-27 22:25:47,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 583 transitions, 10968 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:47,470 INFO L231 Difference]: Finished difference. Result has 452 places, 564 transitions, 9227 flow [2024-06-27 22:25:47,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8750, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9227, PETRI_PLACES=452, PETRI_TRANSITIONS=564} [2024-06-27 22:25:47,471 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 409 predicate places. [2024-06-27 22:25:47,471 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 564 transitions, 9227 flow [2024-06-27 22:25:47,471 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 22:25:47,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:47,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:25:47,472 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 22:25:47,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash 869409761, now seen corresponding path program 15 times [2024-06-27 22:25:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271596684] [2024-06-27 22:25:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271596684] [2024-06-27 22:25:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271596684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:48,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986614786] [2024-06-27 22:25:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:48,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:48,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:25:48,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 564 transitions, 9227 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 22:25:48,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:48,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:25:48,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:49,645 INFO L124 PetriNetUnfolderBase]: 1054/2015 cut-off events. [2024-06-27 22:25:49,645 INFO L125 PetriNetUnfolderBase]: For 458247/458255 co-relation queries the response was YES. [2024-06-27 22:25:49,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 2015 events. 1054/2015 cut-off events. For 458247/458255 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12205 event pairs, 125 based on Foata normal form. 1/1894 useless extension candidates. Maximal degree in co-relation 20533. Up to 1490 conditions per place. [2024-06-27 22:25:49,670 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 439 selfloop transitions, 114 changer transitions 0/573 dead transitions. [2024-06-27 22:25:49,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 573 transitions, 10353 flow [2024-06-27 22:25:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:25:49,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:25:49,672 INFO L175 Difference]: Start difference. First operand has 452 places, 564 transitions, 9227 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:25:49,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 573 transitions, 10353 flow [2024-06-27 22:25:52,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 573 transitions, 10024 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:52,673 INFO L231 Difference]: Finished difference. Result has 453 places, 564 transitions, 9131 flow [2024-06-27 22:25:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8898, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9131, PETRI_PLACES=453, PETRI_TRANSITIONS=564} [2024-06-27 22:25:52,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-27 22:25:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 564 transitions, 9131 flow [2024-06-27 22:25:52,674 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 22:25:52,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:52,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:25:52,675 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 22:25:52,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 861058981, now seen corresponding path program 18 times [2024-06-27 22:25:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779759279] [2024-06-27 22:25:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:54,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779759279] [2024-06-27 22:25:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779759279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:54,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:54,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:25:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183967864] [2024-06-27 22:25:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:54,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:25:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:25:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:25:54,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:25:54,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 564 transitions, 9131 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 22:25:54,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:54,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:25:54,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:55,097 INFO L124 PetriNetUnfolderBase]: 1348/2430 cut-off events. [2024-06-27 22:25:55,097 INFO L125 PetriNetUnfolderBase]: For 467915/467915 co-relation queries the response was YES. [2024-06-27 22:25:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24016 conditions, 2430 events. 1348/2430 cut-off events. For 467915/467915 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14349 event pairs, 116 based on Foata normal form. 1/2323 useless extension candidates. Maximal degree in co-relation 23798. Up to 1548 conditions per place. [2024-06-27 22:25:55,131 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 400 selfloop transitions, 176 changer transitions 0/585 dead transitions. [2024-06-27 22:25:55,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 585 transitions, 11363 flow [2024-06-27 22:25:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:25:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:25:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:25:55,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:25:55,132 INFO L175 Difference]: Start difference. First operand has 453 places, 564 transitions, 9131 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:25:55,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 585 transitions, 11363 flow [2024-06-27 22:25:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 585 transitions, 11130 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:25:58,742 INFO L231 Difference]: Finished difference. Result has 455 places, 566 transitions, 9295 flow [2024-06-27 22:25:58,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8898, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9295, PETRI_PLACES=455, PETRI_TRANSITIONS=566} [2024-06-27 22:25:58,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 412 predicate places. [2024-06-27 22:25:58,742 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 566 transitions, 9295 flow [2024-06-27 22:25:58,743 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 22:25:58,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:58,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:25:58,743 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 22:25:58,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash 869399221, now seen corresponding path program 19 times [2024-06-27 22:25:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:58,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32183358] [2024-06-27 22:25:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:00,454 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 22:26:00,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32183358] [2024-06-27 22:26:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32183358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:00,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:00,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41465222] [2024-06-27 22:26:00,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:00,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:00,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:00,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 566 transitions, 9295 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 22:26:00,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:00,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:00,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:01,487 INFO L124 PetriNetUnfolderBase]: 1346/2423 cut-off events. [2024-06-27 22:26:01,488 INFO L125 PetriNetUnfolderBase]: For 462581/462581 co-relation queries the response was YES. [2024-06-27 22:26:01,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23999 conditions, 2423 events. 1346/2423 cut-off events. For 462581/462581 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 14288 event pairs, 121 based on Foata normal form. 1/2315 useless extension candidates. Maximal degree in co-relation 23779. Up to 1430 conditions per place. [2024-06-27 22:26:01,522 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 359 selfloop transitions, 216 changer transitions 0/584 dead transitions. [2024-06-27 22:26:01,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 584 transitions, 11177 flow [2024-06-27 22:26:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:26:01,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44755244755244755 [2024-06-27 22:26:01,523 INFO L175 Difference]: Start difference. First operand has 455 places, 566 transitions, 9295 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:26:01,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 584 transitions, 11177 flow [2024-06-27 22:26:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 584 transitions, 10794 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:04,332 INFO L231 Difference]: Finished difference. Result has 459 places, 566 transitions, 9349 flow [2024-06-27 22:26:04,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8912, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9349, PETRI_PLACES=459, PETRI_TRANSITIONS=566} [2024-06-27 22:26:04,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-27 22:26:04,333 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 566 transitions, 9349 flow [2024-06-27 22:26:04,333 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 22:26:04,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:04,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:26:04,333 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 22:26:04,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1928892561, now seen corresponding path program 14 times [2024-06-27 22:26:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:04,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642905903] [2024-06-27 22:26:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:05,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642905903] [2024-06-27 22:26:05,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642905903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:05,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:05,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:05,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016544651] [2024-06-27 22:26:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:05,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:05,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 566 transitions, 9349 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 22:26:05,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:05,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:05,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:06,896 INFO L124 PetriNetUnfolderBase]: 1352/2434 cut-off events. [2024-06-27 22:26:06,896 INFO L125 PetriNetUnfolderBase]: For 468286/468286 co-relation queries the response was YES. [2024-06-27 22:26:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 2434 events. 1352/2434 cut-off events. For 468286/468286 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14406 event pairs, 129 based on Foata normal form. 1/2326 useless extension candidates. Maximal degree in co-relation 23955. Up to 1524 conditions per place. [2024-06-27 22:26:06,933 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 384 selfloop transitions, 193 changer transitions 0/586 dead transitions. [2024-06-27 22:26:06,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 586 transitions, 11279 flow [2024-06-27 22:26:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:26:06,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:26:06,934 INFO L175 Difference]: Start difference. First operand has 459 places, 566 transitions, 9349 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:26:06,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 586 transitions, 11279 flow [2024-06-27 22:26:10,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 586 transitions, 10833 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:26:10,320 INFO L231 Difference]: Finished difference. Result has 459 places, 568 transitions, 9334 flow [2024-06-27 22:26:10,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8903, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9334, PETRI_PLACES=459, PETRI_TRANSITIONS=568} [2024-06-27 22:26:10,321 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-27 22:26:10,321 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 568 transitions, 9334 flow [2024-06-27 22:26:10,321 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 22:26:10,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:10,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:10,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:26:10,322 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 22:26:10,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1937243961, now seen corresponding path program 6 times [2024-06-27 22:26:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122023589] [2024-06-27 22:26:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122023589] [2024-06-27 22:26:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122023589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:11,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:26:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382942429] [2024-06-27 22:26:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:26:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:26:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:26:12,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 22:26:12,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 568 transitions, 9334 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:12,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:12,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 22:26:12,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:12,803 INFO L124 PetriNetUnfolderBase]: 1014/1977 cut-off events. [2024-06-27 22:26:12,803 INFO L125 PetriNetUnfolderBase]: For 465511/465533 co-relation queries the response was YES. [2024-06-27 22:26:12,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20295 conditions, 1977 events. 1014/1977 cut-off events. For 465511/465533 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 12276 event pairs, 148 based on Foata normal form. 3/1854 useless extension candidates. Maximal degree in co-relation 20073. Up to 1505 conditions per place. [2024-06-27 22:26:12,833 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 445 selfloop transitions, 45 changer transitions 0/579 dead transitions. [2024-06-27 22:26:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 579 transitions, 10382 flow [2024-06-27 22:26:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:26:12,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:26:12,834 INFO L175 Difference]: Start difference. First operand has 459 places, 568 transitions, 9334 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:26:12,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 579 transitions, 10382 flow [2024-06-27 22:26:15,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 579 transitions, 9970 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:15,369 INFO L231 Difference]: Finished difference. Result has 460 places, 570 transitions, 9069 flow [2024-06-27 22:26:15,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8922, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9069, PETRI_PLACES=460, PETRI_TRANSITIONS=570} [2024-06-27 22:26:15,370 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-27 22:26:15,370 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 570 transitions, 9069 flow [2024-06-27 22:26:15,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:15,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:15,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:15,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:26:15,370 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 22:26:15,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -251488963, now seen corresponding path program 20 times [2024-06-27 22:26:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810006053] [2024-06-27 22:26:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810006053] [2024-06-27 22:26:16,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810006053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097068702] [2024-06-27 22:26:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:16,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:16,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 570 transitions, 9069 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 22:26:16,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:16,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:17,779 INFO L124 PetriNetUnfolderBase]: 1348/2429 cut-off events. [2024-06-27 22:26:17,779 INFO L125 PetriNetUnfolderBase]: For 453602/453602 co-relation queries the response was YES. [2024-06-27 22:26:17,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23460 conditions, 2429 events. 1348/2429 cut-off events. For 453602/453602 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14328 event pairs, 122 based on Foata normal form. 1/2322 useless extension candidates. Maximal degree in co-relation 23237. Up to 1550 conditions per place. [2024-06-27 22:26:17,817 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 395 selfloop transitions, 183 changer transitions 0/587 dead transitions. [2024-06-27 22:26:17,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 587 transitions, 10649 flow [2024-06-27 22:26:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:26:17,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:26:17,818 INFO L175 Difference]: Start difference. First operand has 460 places, 570 transitions, 9069 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:26:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 587 transitions, 10649 flow [2024-06-27 22:26:21,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 587 transitions, 10502 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:26:21,258 INFO L231 Difference]: Finished difference. Result has 462 places, 570 transitions, 9293 flow [2024-06-27 22:26:21,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8922, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9293, PETRI_PLACES=462, PETRI_TRANSITIONS=570} [2024-06-27 22:26:21,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 419 predicate places. [2024-06-27 22:26:21,258 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 570 transitions, 9293 flow [2024-06-27 22:26:21,258 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 22:26:21,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:21,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:21,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:26:21,259 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 22:26:21,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 302877285, now seen corresponding path program 15 times [2024-06-27 22:26:21,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:21,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632116704] [2024-06-27 22:26:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:22,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632116704] [2024-06-27 22:26:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632116704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:22,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:22,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286849373] [2024-06-27 22:26:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:22,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:22,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:22,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:22,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 570 transitions, 9293 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 22:26:22,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:22,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:22,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:23,903 INFO L124 PetriNetUnfolderBase]: 1346/2425 cut-off events. [2024-06-27 22:26:23,903 INFO L125 PetriNetUnfolderBase]: For 446995/446995 co-relation queries the response was YES. [2024-06-27 22:26:23,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23546 conditions, 2425 events. 1346/2425 cut-off events. For 446995/446995 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14350 event pairs, 129 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 23322. Up to 1516 conditions per place. [2024-06-27 22:26:23,940 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 383 selfloop transitions, 195 changer transitions 0/587 dead transitions. [2024-06-27 22:26:23,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 587 transitions, 10875 flow [2024-06-27 22:26:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:26:23,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:26:23,941 INFO L175 Difference]: Start difference. First operand has 462 places, 570 transitions, 9293 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:26:23,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 587 transitions, 10875 flow [2024-06-27 22:26:27,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 587 transitions, 10469 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 22:26:27,607 INFO L231 Difference]: Finished difference. Result has 463 places, 570 transitions, 9282 flow [2024-06-27 22:26:27,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8887, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9282, PETRI_PLACES=463, PETRI_TRANSITIONS=570} [2024-06-27 22:26:27,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-27 22:26:27,607 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 570 transitions, 9282 flow [2024-06-27 22:26:27,607 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 22:26:27,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:27,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:26:27,608 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 22:26:27,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -182314323, now seen corresponding path program 16 times [2024-06-27 22:26:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725943980] [2024-06-27 22:26:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725943980] [2024-06-27 22:26:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725943980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638507071] [2024-06-27 22:26:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:28,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:28,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:28,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:28,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 570 transitions, 9282 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 22:26:28,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:28,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:28,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:29,981 INFO L124 PetriNetUnfolderBase]: 1354/2442 cut-off events. [2024-06-27 22:26:29,982 INFO L125 PetriNetUnfolderBase]: For 452562/452562 co-relation queries the response was YES. [2024-06-27 22:26:30,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23748 conditions, 2442 events. 1354/2442 cut-off events. For 452562/452562 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 14484 event pairs, 131 based on Foata normal form. 1/2334 useless extension candidates. Maximal degree in co-relation 23523. Up to 2092 conditions per place. [2024-06-27 22:26:30,013 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 495 selfloop transitions, 96 changer transitions 0/600 dead transitions. [2024-06-27 22:26:30,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 600 transitions, 10692 flow [2024-06-27 22:26:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:26:30,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:26:30,014 INFO L175 Difference]: Start difference. First operand has 463 places, 570 transitions, 9282 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:26:30,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 600 transitions, 10692 flow [2024-06-27 22:26:33,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 600 transitions, 10272 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:26:33,345 INFO L231 Difference]: Finished difference. Result has 463 places, 574 transitions, 9167 flow [2024-06-27 22:26:33,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8870, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9167, PETRI_PLACES=463, PETRI_TRANSITIONS=574} [2024-06-27 22:26:33,346 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-27 22:26:33,346 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 574 transitions, 9167 flow [2024-06-27 22:26:33,346 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 22:26:33,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:26:33,346 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 22:26:33,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2002449509, now seen corresponding path program 17 times [2024-06-27 22:26:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811963906] [2024-06-27 22:26:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:34,617 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 22:26:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811963906] [2024-06-27 22:26:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811963906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:34,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674381586] [2024-06-27 22:26:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:34,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:34,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:34,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 574 transitions, 9167 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 22:26:34,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:34,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:34,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:35,676 INFO L124 PetriNetUnfolderBase]: 1364/2456 cut-off events. [2024-06-27 22:26:35,676 INFO L125 PetriNetUnfolderBase]: For 455720/455720 co-relation queries the response was YES. [2024-06-27 22:26:35,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23680 conditions, 2456 events. 1364/2456 cut-off events. For 455720/455720 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14563 event pairs, 144 based on Foata normal form. 1/2347 useless extension candidates. Maximal degree in co-relation 23454. Up to 2107 conditions per place. [2024-06-27 22:26:35,712 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 501 selfloop transitions, 94 changer transitions 0/604 dead transitions. [2024-06-27 22:26:35,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 604 transitions, 10634 flow [2024-06-27 22:26:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:26:35,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:26:35,713 INFO L175 Difference]: Start difference. First operand has 463 places, 574 transitions, 9167 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:26:35,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 604 transitions, 10634 flow [2024-06-27 22:26:38,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 604 transitions, 10389 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:38,992 INFO L231 Difference]: Finished difference. Result has 465 places, 580 transitions, 9292 flow [2024-06-27 22:26:38,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8954, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9292, PETRI_PLACES=465, PETRI_TRANSITIONS=580} [2024-06-27 22:26:38,993 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 422 predicate places. [2024-06-27 22:26:38,993 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 580 transitions, 9292 flow [2024-06-27 22:26:38,993 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 22:26:38,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:38,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:26:38,994 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 22:26:38,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1886668229, now seen corresponding path program 18 times [2024-06-27 22:26:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043516579] [2024-06-27 22:26:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:40,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:40,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043516579] [2024-06-27 22:26:40,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043516579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:40,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:40,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423406161] [2024-06-27 22:26:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:40,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:40,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 580 transitions, 9292 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 22:26:40,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:40,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:40,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:41,515 INFO L124 PetriNetUnfolderBase]: 1382/2486 cut-off events. [2024-06-27 22:26:41,515 INFO L125 PetriNetUnfolderBase]: For 475481/475481 co-relation queries the response was YES. [2024-06-27 22:26:41,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24109 conditions, 2486 events. 1382/2486 cut-off events. For 475481/475481 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14777 event pairs, 127 based on Foata normal form. 1/2370 useless extension candidates. Maximal degree in co-relation 23882. Up to 2077 conditions per place. [2024-06-27 22:26:41,554 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 483 selfloop transitions, 121 changer transitions 0/613 dead transitions. [2024-06-27 22:26:41,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 613 transitions, 11100 flow [2024-06-27 22:26:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:26:41,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:26:41,556 INFO L175 Difference]: Start difference. First operand has 465 places, 580 transitions, 9292 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:26:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 613 transitions, 11100 flow [2024-06-27 22:26:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 613 transitions, 10893 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:45,135 INFO L231 Difference]: Finished difference. Result has 468 places, 588 transitions, 9513 flow [2024-06-27 22:26:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9085, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9513, PETRI_PLACES=468, PETRI_TRANSITIONS=588} [2024-06-27 22:26:45,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 425 predicate places. [2024-06-27 22:26:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 588 transitions, 9513 flow [2024-06-27 22:26:45,135 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 22:26:45,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:45,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:26:45,136 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 22:26:45,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1886035581, now seen corresponding path program 21 times [2024-06-27 22:26:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48192] [2024-06-27 22:26:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:46,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:46,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48192] [2024-06-27 22:26:46,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:46,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:46,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:46,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319196089] [2024-06-27 22:26:46,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:46,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:46,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:46,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:46,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 588 transitions, 9513 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 22:26:46,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:47,277 INFO L124 PetriNetUnfolderBase]: 1388/2494 cut-off events. [2024-06-27 22:26:47,277 INFO L125 PetriNetUnfolderBase]: For 481633/481633 co-relation queries the response was YES. [2024-06-27 22:26:47,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24318 conditions, 2494 events. 1388/2494 cut-off events. For 481633/481633 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14844 event pairs, 137 based on Foata normal form. 1/2378 useless extension candidates. Maximal degree in co-relation 24089. Up to 2179 conditions per place. [2024-06-27 22:26:47,313 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 537 selfloop transitions, 70 changer transitions 0/616 dead transitions. [2024-06-27 22:26:47,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 616 transitions, 10929 flow [2024-06-27 22:26:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:26:47,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219114219114219 [2024-06-27 22:26:47,314 INFO L175 Difference]: Start difference. First operand has 468 places, 588 transitions, 9513 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:26:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 616 transitions, 10929 flow [2024-06-27 22:26:50,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 616 transitions, 10749 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:50,704 INFO L231 Difference]: Finished difference. Result has 472 places, 592 transitions, 9565 flow [2024-06-27 22:26:50,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9333, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9565, PETRI_PLACES=472, PETRI_TRANSITIONS=592} [2024-06-27 22:26:50,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 429 predicate places. [2024-06-27 22:26:50,705 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 592 transitions, 9565 flow [2024-06-27 22:26:50,705 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 22:26:50,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:50,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:50,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:26:50,705 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 22:26:50,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1886043269, now seen corresponding path program 19 times [2024-06-27 22:26:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:50,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297819999] [2024-06-27 22:26:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:50,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:51,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297819999] [2024-06-27 22:26:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297819999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:51,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:51,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231533965] [2024-06-27 22:26:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:52,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:52,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 592 transitions, 9565 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 22:26:52,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:52,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:53,157 INFO L124 PetriNetUnfolderBase]: 1386/2493 cut-off events. [2024-06-27 22:26:53,157 INFO L125 PetriNetUnfolderBase]: For 472223/472223 co-relation queries the response was YES. [2024-06-27 22:26:53,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24181 conditions, 2493 events. 1386/2493 cut-off events. For 472223/472223 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14852 event pairs, 129 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 23950. Up to 2085 conditions per place. [2024-06-27 22:26:53,195 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 477 selfloop transitions, 130 changer transitions 0/616 dead transitions. [2024-06-27 22:26:53,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 616 transitions, 10907 flow [2024-06-27 22:26:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:26:53,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 22:26:53,196 INFO L175 Difference]: Start difference. First operand has 472 places, 592 transitions, 9565 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:26:53,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 616 transitions, 10907 flow [2024-06-27 22:26:55,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 616 transitions, 10745 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:26:55,989 INFO L231 Difference]: Finished difference. Result has 475 places, 592 transitions, 9673 flow [2024-06-27 22:26:55,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9403, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9673, PETRI_PLACES=475, PETRI_TRANSITIONS=592} [2024-06-27 22:26:55,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2024-06-27 22:26:55,990 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 592 transitions, 9673 flow [2024-06-27 22:26:55,990 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 22:26:55,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:55,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:55,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:26:55,991 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 22:26:55,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:55,991 INFO L85 PathProgramCache]: Analyzing trace with hash 799522443, now seen corresponding path program 20 times [2024-06-27 22:26:55,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662336799] [2024-06-27 22:26:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:55,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662336799] [2024-06-27 22:26:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662336799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:57,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:57,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:26:57,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029318131] [2024-06-27 22:26:57,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:57,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:26:57,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:57,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:26:57,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:26:57,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:26:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 592 transitions, 9673 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 22:26:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:26:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:58,472 INFO L124 PetriNetUnfolderBase]: 1398/2512 cut-off events. [2024-06-27 22:26:58,473 INFO L125 PetriNetUnfolderBase]: For 478245/478245 co-relation queries the response was YES. [2024-06-27 22:26:58,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24535 conditions, 2512 events. 1398/2512 cut-off events. For 478245/478245 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14956 event pairs, 141 based on Foata normal form. 1/2393 useless extension candidates. Maximal degree in co-relation 24303. Up to 2159 conditions per place. [2024-06-27 22:26:58,510 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 520 selfloop transitions, 93 changer transitions 0/622 dead transitions. [2024-06-27 22:26:58,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 622 transitions, 11189 flow [2024-06-27 22:26:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:26:58,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:26:58,511 INFO L175 Difference]: Start difference. First operand has 475 places, 592 transitions, 9673 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:26:58,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 622 transitions, 11189 flow [2024-06-27 22:27:01,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 622 transitions, 10907 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:01,685 INFO L231 Difference]: Finished difference. Result has 476 places, 600 transitions, 9792 flow [2024-06-27 22:27:01,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9399, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9792, PETRI_PLACES=476, PETRI_TRANSITIONS=600} [2024-06-27 22:27:01,685 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 433 predicate places. [2024-06-27 22:27:01,685 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 600 transitions, 9792 flow [2024-06-27 22:27:01,686 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 22:27:01,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:01,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:01,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:27:01,686 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 22:27:01,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 915303723, now seen corresponding path program 21 times [2024-06-27 22:27:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:01,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602520292] [2024-06-27 22:27:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602520292] [2024-06-27 22:27:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602520292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:03,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:03,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264870659] [2024-06-27 22:27:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:03,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:03,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:03,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:03,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 600 transitions, 9792 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 22:27:03,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:03,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:03,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:04,858 INFO L124 PetriNetUnfolderBase]: 1420/2553 cut-off events. [2024-06-27 22:27:04,859 INFO L125 PetriNetUnfolderBase]: For 499208/499208 co-relation queries the response was YES. [2024-06-27 22:27:04,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25040 conditions, 2553 events. 1420/2553 cut-off events. For 499208/499208 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15264 event pairs, 135 based on Foata normal form. 1/2428 useless extension candidates. Maximal degree in co-relation 24807. Up to 2151 conditions per place. [2024-06-27 22:27:04,899 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 510 selfloop transitions, 116 changer transitions 0/635 dead transitions. [2024-06-27 22:27:04,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 635 transitions, 11708 flow [2024-06-27 22:27:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:27:04,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:27:04,900 INFO L175 Difference]: Start difference. First operand has 476 places, 600 transitions, 9792 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:27:04,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 635 transitions, 11708 flow [2024-06-27 22:27:08,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 635 transitions, 11505 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:08,455 INFO L231 Difference]: Finished difference. Result has 479 places, 612 transitions, 10089 flow [2024-06-27 22:27:08,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9589, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10089, PETRI_PLACES=479, PETRI_TRANSITIONS=612} [2024-06-27 22:27:08,455 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-27 22:27:08,456 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 612 transitions, 10089 flow [2024-06-27 22:27:08,456 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 22:27:08,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:08,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:08,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:27:08,456 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 22:27:08,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 915936371, now seen corresponding path program 22 times [2024-06-27 22:27:08,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:08,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301075505] [2024-06-27 22:27:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:08,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301075505] [2024-06-27 22:27:09,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301075505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:09,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:09,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121260629] [2024-06-27 22:27:09,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:09,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:09,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:09,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 612 transitions, 10089 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 22:27:09,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:09,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:09,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:10,775 INFO L124 PetriNetUnfolderBase]: 1427/2562 cut-off events. [2024-06-27 22:27:10,775 INFO L125 PetriNetUnfolderBase]: For 505774/505774 co-relation queries the response was YES. [2024-06-27 22:27:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25277 conditions, 2562 events. 1427/2562 cut-off events. For 505774/505774 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 15320 event pairs, 143 based on Foata normal form. 1/2436 useless extension candidates. Maximal degree in co-relation 25042. Up to 2239 conditions per place. [2024-06-27 22:27:10,814 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 561 selfloop transitions, 70 changer transitions 0/640 dead transitions. [2024-06-27 22:27:10,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 640 transitions, 11579 flow [2024-06-27 22:27:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:27:10,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219114219114219 [2024-06-27 22:27:10,816 INFO L175 Difference]: Start difference. First operand has 479 places, 612 transitions, 10089 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:27:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 640 transitions, 11579 flow [2024-06-27 22:27:15,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 640 transitions, 11415 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:15,028 INFO L231 Difference]: Finished difference. Result has 483 places, 618 transitions, 10203 flow [2024-06-27 22:27:15,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9925, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10203, PETRI_PLACES=483, PETRI_TRANSITIONS=618} [2024-06-27 22:27:15,029 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 440 predicate places. [2024-06-27 22:27:15,029 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 618 transitions, 10203 flow [2024-06-27 22:27:15,029 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 22:27:15,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:15,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:15,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:27:15,029 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 22:27:15,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash 915928683, now seen corresponding path program 22 times [2024-06-27 22:27:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882894223] [2024-06-27 22:27:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:16,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882894223] [2024-06-27 22:27:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882894223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:16,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:16,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207229033] [2024-06-27 22:27:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:16,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:16,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:16,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:16,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:16,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 618 transitions, 10203 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 22:27:16,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:16,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:16,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:17,915 INFO L124 PetriNetUnfolderBase]: 1425/2562 cut-off events. [2024-06-27 22:27:17,916 INFO L125 PetriNetUnfolderBase]: For 496015/496015 co-relation queries the response was YES. [2024-06-27 22:27:17,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25153 conditions, 2562 events. 1425/2562 cut-off events. For 496015/496015 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 15325 event pairs, 137 based on Foata normal form. 1/2437 useless extension candidates. Maximal degree in co-relation 24916. Up to 2161 conditions per place. [2024-06-27 22:27:17,950 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 511 selfloop transitions, 120 changer transitions 0/640 dead transitions. [2024-06-27 22:27:17,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 640 transitions, 11579 flow [2024-06-27 22:27:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:27:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:27:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:27:17,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512820512820513 [2024-06-27 22:27:17,951 INFO L175 Difference]: Start difference. First operand has 483 places, 618 transitions, 10203 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:27:17,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 640 transitions, 11579 flow [2024-06-27 22:27:21,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 640 transitions, 11419 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:21,311 INFO L231 Difference]: Finished difference. Result has 485 places, 618 transitions, 10295 flow [2024-06-27 22:27:21,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10043, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10295, PETRI_PLACES=485, PETRI_TRANSITIONS=618} [2024-06-27 22:27:21,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 442 predicate places. [2024-06-27 22:27:21,312 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 618 transitions, 10295 flow [2024-06-27 22:27:21,312 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 22:27:21,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:21,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:21,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:27:21,312 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 22:27:21,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1097275765, now seen corresponding path program 23 times [2024-06-27 22:27:21,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468484073] [2024-06-27 22:27:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:21,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468484073] [2024-06-27 22:27:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468484073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:22,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:22,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785579641] [2024-06-27 22:27:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:22,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:22,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:22,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 618 transitions, 10295 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 22:27:22,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:22,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:22,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:23,650 INFO L124 PetriNetUnfolderBase]: 1440/2578 cut-off events. [2024-06-27 22:27:23,650 INFO L125 PetriNetUnfolderBase]: For 517111/517111 co-relation queries the response was YES. [2024-06-27 22:27:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25676 conditions, 2578 events. 1440/2578 cut-off events. For 517111/517111 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15344 event pairs, 121 based on Foata normal form. 1/2452 useless extension candidates. Maximal degree in co-relation 25439. Up to 2178 conditions per place. [2024-06-27 22:27:23,690 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 519 selfloop transitions, 123 changer transitions 0/651 dead transitions. [2024-06-27 22:27:23,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 651 transitions, 12233 flow [2024-06-27 22:27:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:27:23,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:27:23,691 INFO L175 Difference]: Start difference. First operand has 485 places, 618 transitions, 10295 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:27:23,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 651 transitions, 12233 flow [2024-06-27 22:27:26,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 651 transitions, 11979 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:26,933 INFO L231 Difference]: Finished difference. Result has 488 places, 628 transitions, 10540 flow [2024-06-27 22:27:26,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10041, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10540, PETRI_PLACES=488, PETRI_TRANSITIONS=628} [2024-06-27 22:27:26,934 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-27 22:27:26,934 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 628 transitions, 10540 flow [2024-06-27 22:27:26,934 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 22:27:26,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:26,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:27:26,934 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 22:27:26,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1116423287, now seen corresponding path program 23 times [2024-06-27 22:27:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:26,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753055489] [2024-06-27 22:27:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:26,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:28,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:28,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753055489] [2024-06-27 22:27:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753055489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:28,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287287140] [2024-06-27 22:27:28,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:28,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:28,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 628 transitions, 10540 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 22:27:28,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:28,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:28,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:29,540 INFO L124 PetriNetUnfolderBase]: 1460/2621 cut-off events. [2024-06-27 22:27:29,540 INFO L125 PetriNetUnfolderBase]: For 538293/538293 co-relation queries the response was YES. [2024-06-27 22:27:29,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26261 conditions, 2621 events. 1460/2621 cut-off events. For 538293/538293 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 15727 event pairs, 113 based on Foata normal form. 1/2489 useless extension candidates. Maximal degree in co-relation 26021. Up to 2089 conditions per place. [2024-06-27 22:27:29,580 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 457 selfloop transitions, 195 changer transitions 0/661 dead transitions. [2024-06-27 22:27:29,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 661 transitions, 12490 flow [2024-06-27 22:27:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:27:29,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:27:29,582 INFO L175 Difference]: Start difference. First operand has 488 places, 628 transitions, 10540 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:27:29,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 661 transitions, 12490 flow [2024-06-27 22:27:32,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 661 transitions, 12323 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:32,969 INFO L231 Difference]: Finished difference. Result has 493 places, 638 transitions, 11063 flow [2024-06-27 22:27:32,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10373, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11063, PETRI_PLACES=493, PETRI_TRANSITIONS=638} [2024-06-27 22:27:32,969 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 450 predicate places. [2024-06-27 22:27:32,969 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 638 transitions, 11063 flow [2024-06-27 22:27:32,970 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 22:27:32,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:32,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:32,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:27:32,970 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 22:27:32,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1116430975, now seen corresponding path program 24 times [2024-06-27 22:27:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467549466] [2024-06-27 22:27:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:34,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467549466] [2024-06-27 22:27:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467549466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:34,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29740296] [2024-06-27 22:27:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:34,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:34,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 638 transitions, 11063 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 22:27:34,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:34,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:34,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:35,460 INFO L124 PetriNetUnfolderBase]: 1465/2620 cut-off events. [2024-06-27 22:27:35,460 INFO L125 PetriNetUnfolderBase]: For 545886/545886 co-relation queries the response was YES. [2024-06-27 22:27:35,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26846 conditions, 2620 events. 1465/2620 cut-off events. For 545886/545886 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 15656 event pairs, 121 based on Foata normal form. 1/2489 useless extension candidates. Maximal degree in co-relation 26603. Up to 2214 conditions per place. [2024-06-27 22:27:35,496 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 539 selfloop transitions, 115 changer transitions 0/663 dead transitions. [2024-06-27 22:27:35,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 663 transitions, 12899 flow [2024-06-27 22:27:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:27:35,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 22:27:35,501 INFO L175 Difference]: Start difference. First operand has 493 places, 638 transitions, 11063 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:27:35,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 663 transitions, 12899 flow [2024-06-27 22:27:39,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 663 transitions, 12663 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:39,692 INFO L231 Difference]: Finished difference. Result has 496 places, 640 transitions, 11126 flow [2024-06-27 22:27:39,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10827, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11126, PETRI_PLACES=496, PETRI_TRANSITIONS=640} [2024-06-27 22:27:39,693 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-27 22:27:39,693 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 640 transitions, 11126 flow [2024-06-27 22:27:39,693 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 22:27:39,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:39,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:39,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:27:39,693 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 22:27:39,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:39,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1109273447, now seen corresponding path program 24 times [2024-06-27 22:27:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416607909] [2024-06-27 22:27:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416607909] [2024-06-27 22:27:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416607909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778999941] [2024-06-27 22:27:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:41,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:41,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 640 transitions, 11126 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 22:27:41,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:41,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:41,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:42,426 INFO L124 PetriNetUnfolderBase]: 1471/2639 cut-off events. [2024-06-27 22:27:42,426 INFO L125 PetriNetUnfolderBase]: For 550896/550896 co-relation queries the response was YES. [2024-06-27 22:27:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27067 conditions, 2639 events. 1471/2639 cut-off events. For 550896/550896 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 15862 event pairs, 113 based on Foata normal form. 1/2506 useless extension candidates. Maximal degree in co-relation 26822. Up to 2104 conditions per place. [2024-06-27 22:27:42,466 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 485 selfloop transitions, 171 changer transitions 0/665 dead transitions. [2024-06-27 22:27:42,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 665 transitions, 12972 flow [2024-06-27 22:27:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:27:42,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:27:42,467 INFO L175 Difference]: Start difference. First operand has 496 places, 640 transitions, 11126 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:27:42,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 665 transitions, 12972 flow [2024-06-27 22:27:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 665 transitions, 12753 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:46,836 INFO L231 Difference]: Finished difference. Result has 498 places, 642 transitions, 11322 flow [2024-06-27 22:27:46,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10907, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11322, PETRI_PLACES=498, PETRI_TRANSITIONS=642} [2024-06-27 22:27:46,837 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 455 predicate places. [2024-06-27 22:27:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 642 transitions, 11322 flow [2024-06-27 22:27:46,837 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 22:27:46,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:46,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:27:46,837 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 22:27:46,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1109281135, now seen corresponding path program 25 times [2024-06-27 22:27:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771718589] [2024-06-27 22:27:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771718589] [2024-06-27 22:27:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771718589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:48,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:48,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104020804] [2024-06-27 22:27:48,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:48,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:48,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:48,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 642 transitions, 11322 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 22:27:48,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:48,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:48,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:49,261 INFO L124 PetriNetUnfolderBase]: 1469/2626 cut-off events. [2024-06-27 22:27:49,261 INFO L125 PetriNetUnfolderBase]: For 542493/542493 co-relation queries the response was YES. [2024-06-27 22:27:49,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27028 conditions, 2626 events. 1469/2626 cut-off events. For 542493/542493 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 15722 event pairs, 123 based on Foata normal form. 1/2494 useless extension candidates. Maximal degree in co-relation 26782. Up to 2221 conditions per place. [2024-06-27 22:27:49,302 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 547 selfloop transitions, 108 changer transitions 0/664 dead transitions. [2024-06-27 22:27:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 664 transitions, 12754 flow [2024-06-27 22:27:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:27:49,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 22:27:49,304 INFO L175 Difference]: Start difference. First operand has 498 places, 642 transitions, 11322 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:27:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 664 transitions, 12754 flow [2024-06-27 22:27:53,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 664 transitions, 12198 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-27 22:27:53,377 INFO L231 Difference]: Finished difference. Result has 499 places, 642 transitions, 10991 flow [2024-06-27 22:27:53,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10766, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10991, PETRI_PLACES=499, PETRI_TRANSITIONS=642} [2024-06-27 22:27:53,378 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-27 22:27:53,378 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 642 transitions, 10991 flow [2024-06-27 22:27:53,379 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 22:27:53,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:53,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:27:53,379 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 22:27:53,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1109052107, now seen corresponding path program 25 times [2024-06-27 22:27:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655077162] [2024-06-27 22:27:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655077162] [2024-06-27 22:27:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655077162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:54,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:54,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:27:54,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093094633] [2024-06-27 22:27:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:54,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:27:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:27:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:27:55,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:27:55,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 642 transitions, 10991 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 22:27:55,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:55,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:27:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:56,373 INFO L124 PetriNetUnfolderBase]: 1467/2633 cut-off events. [2024-06-27 22:27:56,374 INFO L125 PetriNetUnfolderBase]: For 531170/531170 co-relation queries the response was YES. [2024-06-27 22:27:56,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26380 conditions, 2633 events. 1467/2633 cut-off events. For 531170/531170 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 15819 event pairs, 113 based on Foata normal form. 1/2500 useless extension candidates. Maximal degree in co-relation 26134. Up to 2099 conditions per place. [2024-06-27 22:27:56,415 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 481 selfloop transitions, 174 changer transitions 0/664 dead transitions. [2024-06-27 22:27:56,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 664 transitions, 12423 flow [2024-06-27 22:27:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:27:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:27:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:27:56,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:27:56,417 INFO L175 Difference]: Start difference. First operand has 499 places, 642 transitions, 10991 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:27:56,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 664 transitions, 12423 flow [2024-06-27 22:27:59,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 664 transitions, 12088 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 22:27:59,992 INFO L231 Difference]: Finished difference. Result has 499 places, 642 transitions, 11013 flow [2024-06-27 22:27:59,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10656, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11013, PETRI_PLACES=499, PETRI_TRANSITIONS=642} [2024-06-27 22:27:59,992 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-27 22:27:59,992 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 642 transitions, 11013 flow [2024-06-27 22:27:59,992 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 22:27:59,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:59,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:59,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:27:59,993 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 22:27:59,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash -536771623, now seen corresponding path program 26 times [2024-06-27 22:27:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:59,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337495832] [2024-06-27 22:27:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337495832] [2024-06-27 22:28:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337495832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5516007] [2024-06-27 22:28:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:01,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:01,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 642 transitions, 11013 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 22:28:01,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:01,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:01,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:02,615 INFO L124 PetriNetUnfolderBase]: 1473/2638 cut-off events. [2024-06-27 22:28:02,615 INFO L125 PetriNetUnfolderBase]: For 521420/521420 co-relation queries the response was YES. [2024-06-27 22:28:02,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26428 conditions, 2638 events. 1473/2638 cut-off events. For 521420/521420 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 15822 event pairs, 111 based on Foata normal form. 1/2501 useless extension candidates. Maximal degree in co-relation 26181. Up to 2276 conditions per place. [2024-06-27 22:28:02,656 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 570 selfloop transitions, 91 changer transitions 0/670 dead transitions. [2024-06-27 22:28:02,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 670 transitions, 12613 flow [2024-06-27 22:28:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:28:02,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-27 22:28:02,657 INFO L175 Difference]: Start difference. First operand has 499 places, 642 transitions, 11013 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:28:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 670 transitions, 12613 flow [2024-06-27 22:28:06,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 670 transitions, 12222 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 22:28:06,817 INFO L231 Difference]: Finished difference. Result has 499 places, 650 transitions, 11023 flow [2024-06-27 22:28:06,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10634, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11023, PETRI_PLACES=499, PETRI_TRANSITIONS=650} [2024-06-27 22:28:06,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-27 22:28:06,817 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 650 transitions, 11023 flow [2024-06-27 22:28:06,818 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 22:28:06,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:06,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:06,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:28:06,818 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 22:28:06,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash -533023723, now seen corresponding path program 27 times [2024-06-27 22:28:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:06,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701512787] [2024-06-27 22:28:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:08,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:08,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701512787] [2024-06-27 22:28:08,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701512787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:08,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:08,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422545544] [2024-06-27 22:28:08,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:08,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:08,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:08,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:08,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:08,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:08,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 650 transitions, 11023 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 22:28:08,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:08,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:09,690 INFO L124 PetriNetUnfolderBase]: 1499/2685 cut-off events. [2024-06-27 22:28:09,690 INFO L125 PetriNetUnfolderBase]: For 542135/542135 co-relation queries the response was YES. [2024-06-27 22:28:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26885 conditions, 2685 events. 1499/2685 cut-off events. For 542135/542135 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 16161 event pairs, 122 based on Foata normal form. 1/2542 useless extension candidates. Maximal degree in co-relation 26638. Up to 2274 conditions per place. [2024-06-27 22:28:09,731 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 559 selfloop transitions, 119 changer transitions 0/687 dead transitions. [2024-06-27 22:28:09,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 687 transitions, 13139 flow [2024-06-27 22:28:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:28:09,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:28:09,732 INFO L175 Difference]: Start difference. First operand has 499 places, 650 transitions, 11023 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:28:09,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 687 transitions, 13139 flow [2024-06-27 22:28:13,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 687 transitions, 12787 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:13,632 INFO L231 Difference]: Finished difference. Result has 502 places, 666 transitions, 11279 flow [2024-06-27 22:28:13,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10671, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11279, PETRI_PLACES=502, PETRI_TRANSITIONS=666} [2024-06-27 22:28:13,632 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-27 22:28:13,632 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 666 transitions, 11279 flow [2024-06-27 22:28:13,633 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 22:28:13,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:13,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:28:13,633 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 22:28:13,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash -533016965, now seen corresponding path program 26 times [2024-06-27 22:28:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625293992] [2024-06-27 22:28:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625293992] [2024-06-27 22:28:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625293992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158255009] [2024-06-27 22:28:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:14,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:14,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 666 transitions, 11279 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 22:28:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:16,152 INFO L124 PetriNetUnfolderBase]: 1507/2700 cut-off events. [2024-06-27 22:28:16,152 INFO L125 PetriNetUnfolderBase]: For 549420/549420 co-relation queries the response was YES. [2024-06-27 22:28:16,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27124 conditions, 2700 events. 1507/2700 cut-off events. For 549420/549420 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16284 event pairs, 122 based on Foata normal form. 1/2558 useless extension candidates. Maximal degree in co-relation 26874. Up to 2364 conditions per place. [2024-06-27 22:28:16,187 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 615 selfloop transitions, 70 changer transitions 0/694 dead transitions. [2024-06-27 22:28:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 694 transitions, 12923 flow [2024-06-27 22:28:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:28:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219114219114219 [2024-06-27 22:28:16,188 INFO L175 Difference]: Start difference. First operand has 502 places, 666 transitions, 11279 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:28:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 694 transitions, 12923 flow [2024-06-27 22:28:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 694 transitions, 12763 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:28:19,231 INFO L231 Difference]: Finished difference. Result has 506 places, 674 transitions, 11463 flow [2024-06-27 22:28:19,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11119, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11463, PETRI_PLACES=506, PETRI_TRANSITIONS=674} [2024-06-27 22:28:19,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 463 predicate places. [2024-06-27 22:28:19,232 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 674 transitions, 11463 flow [2024-06-27 22:28:19,232 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 22:28:19,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:19,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:19,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:28:19,232 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 22:28:19,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash -533017213, now seen corresponding path program 28 times [2024-06-27 22:28:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542046208] [2024-06-27 22:28:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542046208] [2024-06-27 22:28:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542046208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:20,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:20,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331234685] [2024-06-27 22:28:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:20,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:20,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:20,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 674 transitions, 11463 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 22:28:20,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:20,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:21,876 INFO L124 PetriNetUnfolderBase]: 1505/2696 cut-off events. [2024-06-27 22:28:21,876 INFO L125 PetriNetUnfolderBase]: For 538599/538599 co-relation queries the response was YES. [2024-06-27 22:28:21,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26997 conditions, 2696 events. 1505/2696 cut-off events. For 538599/538599 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16243 event pairs, 122 based on Foata normal form. 1/2553 useless extension candidates. Maximal degree in co-relation 26745. Up to 2286 conditions per place. [2024-06-27 22:28:21,920 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 561 selfloop transitions, 124 changer transitions 0/694 dead transitions. [2024-06-27 22:28:21,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 694 transitions, 12933 flow [2024-06-27 22:28:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:28:21,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-06-27 22:28:21,921 INFO L175 Difference]: Start difference. First operand has 506 places, 674 transitions, 11463 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:28:21,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 694 transitions, 12933 flow [2024-06-27 22:28:26,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 694 transitions, 12775 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:26,395 INFO L231 Difference]: Finished difference. Result has 509 places, 674 transitions, 11567 flow [2024-06-27 22:28:26,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11305, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11567, PETRI_PLACES=509, PETRI_TRANSITIONS=674} [2024-06-27 22:28:26,396 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 466 predicate places. [2024-06-27 22:28:26,396 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 674 transitions, 11567 flow [2024-06-27 22:28:26,396 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 22:28:26,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:26,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:26,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:28:26,397 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 22:28:26,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -388002065, now seen corresponding path program 27 times [2024-06-27 22:28:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099749768] [2024-06-27 22:28:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099749768] [2024-06-27 22:28:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099749768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104797682] [2024-06-27 22:28:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:27,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:27,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 674 transitions, 11567 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 22:28:27,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:27,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:27,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:28,928 INFO L124 PetriNetUnfolderBase]: 1530/2739 cut-off events. [2024-06-27 22:28:28,928 INFO L125 PetriNetUnfolderBase]: For 579110/579110 co-relation queries the response was YES. [2024-06-27 22:28:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27951 conditions, 2739 events. 1530/2739 cut-off events. For 579110/579110 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 16554 event pairs, 122 based on Foata normal form. 1/2597 useless extension candidates. Maximal degree in co-relation 27698. Up to 2338 conditions per place. [2024-06-27 22:28:28,970 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 597 selfloop transitions, 108 changer transitions 0/714 dead transitions. [2024-06-27 22:28:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 714 transitions, 14185 flow [2024-06-27 22:28:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:28:28,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-27 22:28:28,971 INFO L175 Difference]: Start difference. First operand has 509 places, 674 transitions, 11567 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:28:28,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 714 transitions, 14185 flow [2024-06-27 22:28:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 714 transitions, 13923 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:28:34,251 INFO L231 Difference]: Finished difference. Result has 512 places, 692 transitions, 11994 flow [2024-06-27 22:28:34,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11305, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11994, PETRI_PLACES=512, PETRI_TRANSITIONS=692} [2024-06-27 22:28:34,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 469 predicate places. [2024-06-27 22:28:34,251 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 692 transitions, 11994 flow [2024-06-27 22:28:34,251 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 22:28:34,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:34,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:34,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:28:34,252 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 22:28:34,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -388002313, now seen corresponding path program 29 times [2024-06-27 22:28:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:34,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074942629] [2024-06-27 22:28:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:35,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:35,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074942629] [2024-06-27 22:28:35,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074942629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:35,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:35,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235944353] [2024-06-27 22:28:35,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:35,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:35,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:35,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 692 transitions, 11994 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 22:28:35,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:35,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:35,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:36,910 INFO L124 PetriNetUnfolderBase]: 1556/2787 cut-off events. [2024-06-27 22:28:36,910 INFO L125 PetriNetUnfolderBase]: For 603264/603264 co-relation queries the response was YES. [2024-06-27 22:28:36,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28648 conditions, 2787 events. 1556/2787 cut-off events. For 603264/603264 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 16941 event pairs, 122 based on Foata normal form. 1/2636 useless extension candidates. Maximal degree in co-relation 28392. Up to 2305 conditions per place. [2024-06-27 22:28:36,955 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 561 selfloop transitions, 159 changer transitions 0/729 dead transitions. [2024-06-27 22:28:36,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 729 transitions, 14174 flow [2024-06-27 22:28:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:28:36,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 22:28:36,956 INFO L175 Difference]: Start difference. First operand has 512 places, 692 transitions, 11994 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:28:36,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 729 transitions, 14174 flow [2024-06-27 22:28:41,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 729 transitions, 14054 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:41,557 INFO L231 Difference]: Finished difference. Result has 517 places, 708 transitions, 12570 flow [2024-06-27 22:28:41,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11874, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12570, PETRI_PLACES=517, PETRI_TRANSITIONS=708} [2024-06-27 22:28:41,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 474 predicate places. [2024-06-27 22:28:41,558 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 708 transitions, 12570 flow [2024-06-27 22:28:41,558 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 22:28:41,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:41,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:41,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:28:41,558 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 22:28:41,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:41,559 INFO L85 PathProgramCache]: Analyzing trace with hash -387993695, now seen corresponding path program 28 times [2024-06-27 22:28:41,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:41,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590099775] [2024-06-27 22:28:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:41,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:42,883 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 22:28:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:42,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590099775] [2024-06-27 22:28:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590099775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:42,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:42,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481471977] [2024-06-27 22:28:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:42,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:42,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:42,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:42,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:42,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 708 transitions, 12570 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 22:28:42,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:42,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:42,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:44,090 INFO L124 PetriNetUnfolderBase]: 1554/2782 cut-off events. [2024-06-27 22:28:44,090 INFO L125 PetriNetUnfolderBase]: For 593277/593277 co-relation queries the response was YES. [2024-06-27 22:28:44,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28839 conditions, 2782 events. 1554/2782 cut-off events. For 593277/593277 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 16885 event pairs, 122 based on Foata normal form. 1/2632 useless extension candidates. Maximal degree in co-relation 28581. Up to 2375 conditions per place. [2024-06-27 22:28:44,135 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 605 selfloop transitions, 115 changer transitions 0/729 dead transitions. [2024-06-27 22:28:44,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 729 transitions, 14484 flow [2024-06-27 22:28:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:28:44,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43123543123543123 [2024-06-27 22:28:44,136 INFO L175 Difference]: Start difference. First operand has 517 places, 708 transitions, 12570 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:28:44,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 729 transitions, 14484 flow [2024-06-27 22:28:48,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 729 transitions, 14277 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:48,748 INFO L231 Difference]: Finished difference. Result has 522 places, 708 transitions, 12604 flow [2024-06-27 22:28:48,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12363, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12604, PETRI_PLACES=522, PETRI_TRANSITIONS=708} [2024-06-27 22:28:48,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 479 predicate places. [2024-06-27 22:28:48,749 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 708 transitions, 12604 flow [2024-06-27 22:28:48,749 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 22:28:48,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:48,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:28:48,749 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 22:28:48,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -388239463, now seen corresponding path program 30 times [2024-06-27 22:28:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449267788] [2024-06-27 22:28:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:50,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:50,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449267788] [2024-06-27 22:28:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449267788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:50,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:50,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84807089] [2024-06-27 22:28:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:50,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:50,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:50,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 708 transitions, 12604 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 22:28:50,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:50,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:50,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:51,948 INFO L124 PetriNetUnfolderBase]: 1560/2793 cut-off events. [2024-06-27 22:28:51,948 INFO L125 PetriNetUnfolderBase]: For 598798/598798 co-relation queries the response was YES. [2024-06-27 22:28:51,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29045 conditions, 2793 events. 1560/2793 cut-off events. For 598798/598798 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16943 event pairs, 122 based on Foata normal form. 1/2641 useless extension candidates. Maximal degree in co-relation 28784. Up to 2309 conditions per place. [2024-06-27 22:28:51,989 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 570 selfloop transitions, 152 changer transitions 0/731 dead transitions. [2024-06-27 22:28:51,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 731 transitions, 14588 flow [2024-06-27 22:28:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:28:51,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2024-06-27 22:28:51,993 INFO L175 Difference]: Start difference. First operand has 522 places, 708 transitions, 12604 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:28:51,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 731 transitions, 14588 flow [2024-06-27 22:28:55,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 731 transitions, 14388 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:28:55,915 INFO L231 Difference]: Finished difference. Result has 524 places, 710 transitions, 12783 flow [2024-06-27 22:28:55,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12404, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12783, PETRI_PLACES=524, PETRI_TRANSITIONS=710} [2024-06-27 22:28:55,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 481 predicate places. [2024-06-27 22:28:55,916 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 710 transitions, 12783 flow [2024-06-27 22:28:55,916 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 22:28:55,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:55,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:55,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:28:55,916 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 22:28:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -388232953, now seen corresponding path program 31 times [2024-06-27 22:28:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:55,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222099335] [2024-06-27 22:28:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:55,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222099335] [2024-06-27 22:28:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222099335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:57,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:28:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227602939] [2024-06-27 22:28:57,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:57,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:28:57,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:28:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:28:57,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:28:57,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 710 transitions, 12783 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 22:28:57,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:57,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:28:57,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:58,538 INFO L124 PetriNetUnfolderBase]: 1558/2790 cut-off events. [2024-06-27 22:28:58,539 INFO L125 PetriNetUnfolderBase]: For 589264/589264 co-relation queries the response was YES. [2024-06-27 22:28:58,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28991 conditions, 2790 events. 1558/2790 cut-off events. For 589264/589264 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16946 event pairs, 122 based on Foata normal form. 1/2638 useless extension candidates. Maximal degree in co-relation 28729. Up to 2307 conditions per place. [2024-06-27 22:28:58,585 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 573 selfloop transitions, 148 changer transitions 0/730 dead transitions. [2024-06-27 22:28:58,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 730 transitions, 14333 flow [2024-06-27 22:28:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:28:58,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-27 22:28:58,586 INFO L175 Difference]: Start difference. First operand has 524 places, 710 transitions, 12783 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:28:58,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 730 transitions, 14333 flow [2024-06-27 22:29:03,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 730 transitions, 13911 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:03,369 INFO L231 Difference]: Finished difference. Result has 525 places, 710 transitions, 12668 flow [2024-06-27 22:29:03,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12361, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12668, PETRI_PLACES=525, PETRI_TRANSITIONS=710} [2024-06-27 22:29:03,370 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 482 predicate places. [2024-06-27 22:29:03,370 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 710 transitions, 12668 flow [2024-06-27 22:29:03,370 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 22:29:03,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:03,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:29:03,370 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 22:29:03,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1314302233, now seen corresponding path program 29 times [2024-06-27 22:29:03,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:03,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122732313] [2024-06-27 22:29:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122732313] [2024-06-27 22:29:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122732313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592536883] [2024-06-27 22:29:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:04,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:04,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 710 transitions, 12668 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 22:29:04,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:04,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:04,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:05,949 INFO L124 PetriNetUnfolderBase]: 1556/2788 cut-off events. [2024-06-27 22:29:05,950 INFO L125 PetriNetUnfolderBase]: For 577363/577363 co-relation queries the response was YES. [2024-06-27 22:29:05,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28526 conditions, 2788 events. 1556/2788 cut-off events. For 577363/577363 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16947 event pairs, 122 based on Foata normal form. 1/2637 useless extension candidates. Maximal degree in co-relation 28265. Up to 2379 conditions per place. [2024-06-27 22:29:05,995 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 617 selfloop transitions, 104 changer transitions 0/730 dead transitions. [2024-06-27 22:29:05,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 730 transitions, 14218 flow [2024-06-27 22:29:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:29:05,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-06-27 22:29:05,996 INFO L175 Difference]: Start difference. First operand has 525 places, 710 transitions, 12668 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:29:05,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 730 transitions, 14218 flow [2024-06-27 22:29:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 730 transitions, 13817 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:10,824 INFO L231 Difference]: Finished difference. Result has 526 places, 710 transitions, 12486 flow [2024-06-27 22:29:10,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12267, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12486, PETRI_PLACES=526, PETRI_TRANSITIONS=710} [2024-06-27 22:29:10,824 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 483 predicate places. [2024-06-27 22:29:10,824 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 710 transitions, 12486 flow [2024-06-27 22:29:10,824 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 22:29:10,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:10,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:10,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:29:10,825 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 22:29:10,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1084382983, now seen corresponding path program 30 times [2024-06-27 22:29:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707046649] [2024-06-27 22:29:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:12,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:12,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707046649] [2024-06-27 22:29:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707046649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:12,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:12,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:12,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518203206] [2024-06-27 22:29:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:12,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:12,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:12,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 710 transitions, 12486 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 22:29:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:13,487 INFO L124 PetriNetUnfolderBase]: 1574/2819 cut-off events. [2024-06-27 22:29:13,487 INFO L125 PetriNetUnfolderBase]: For 601091/601091 co-relation queries the response was YES. [2024-06-27 22:29:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28915 conditions, 2819 events. 1574/2819 cut-off events. For 601091/601091 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 17156 event pairs, 126 based on Foata normal form. 1/2668 useless extension candidates. Maximal degree in co-relation 28652. Up to 2207 conditions per place. [2024-06-27 22:29:13,532 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 541 selfloop transitions, 198 changer transitions 0/748 dead transitions. [2024-06-27 22:29:13,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 748 transitions, 15120 flow [2024-06-27 22:29:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:29:13,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:29:13,534 INFO L175 Difference]: Start difference. First operand has 526 places, 710 transitions, 12486 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:29:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 748 transitions, 15120 flow [2024-06-27 22:29:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 748 transitions, 14822 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 22:29:18,401 INFO L231 Difference]: Finished difference. Result has 528 places, 726 transitions, 13041 flow [2024-06-27 22:29:18,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12188, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13041, PETRI_PLACES=528, PETRI_TRANSITIONS=726} [2024-06-27 22:29:18,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-27 22:29:18,402 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 726 transitions, 13041 flow [2024-06-27 22:29:18,402 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 22:29:18,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:18,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:18,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:29:18,403 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 22:29:18,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1084383231, now seen corresponding path program 32 times [2024-06-27 22:29:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:18,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663886837] [2024-06-27 22:29:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:18,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663886837] [2024-06-27 22:29:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663886837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22236413] [2024-06-27 22:29:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:19,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:19,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 726 transitions, 13041 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 22:29:19,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:19,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:21,284 INFO L124 PetriNetUnfolderBase]: 1588/2843 cut-off events. [2024-06-27 22:29:21,285 INFO L125 PetriNetUnfolderBase]: For 608587/608587 co-relation queries the response was YES. [2024-06-27 22:29:21,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29493 conditions, 2843 events. 1588/2843 cut-off events. For 608587/608587 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 17328 event pairs, 128 based on Foata normal form. 1/2686 useless extension candidates. Maximal degree in co-relation 29227. Up to 2114 conditions per place. [2024-06-27 22:29:21,324 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 452 selfloop transitions, 296 changer transitions 0/757 dead transitions. [2024-06-27 22:29:21,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 757 transitions, 15169 flow [2024-06-27 22:29:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:29:21,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:29:21,325 INFO L175 Difference]: Start difference. First operand has 528 places, 726 transitions, 13041 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:29:21,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 757 transitions, 15169 flow [2024-06-27 22:29:26,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 757 transitions, 14486 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:29:26,626 INFO L231 Difference]: Finished difference. Result has 531 places, 736 transitions, 13305 flow [2024-06-27 22:29:26,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12358, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13305, PETRI_PLACES=531, PETRI_TRANSITIONS=736} [2024-06-27 22:29:26,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 488 predicate places. [2024-06-27 22:29:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 736 transitions, 13305 flow [2024-06-27 22:29:26,627 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 22:29:26,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 22:29:26,627 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 22:29:26,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1092663951, now seen corresponding path program 33 times [2024-06-27 22:29:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068824662] [2024-06-27 22:29:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068824662] [2024-06-27 22:29:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068824662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302327702] [2024-06-27 22:29:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:28,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:28,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 736 transitions, 13305 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 22:29:28,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:28,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:28,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:29,722 INFO L124 PetriNetUnfolderBase]: 1594/2855 cut-off events. [2024-06-27 22:29:29,723 INFO L125 PetriNetUnfolderBase]: For 613293/613293 co-relation queries the response was YES. [2024-06-27 22:29:29,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30092 conditions, 2855 events. 1594/2855 cut-off events. For 613293/613293 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 17423 event pairs, 128 based on Foata normal form. 1/2697 useless extension candidates. Maximal degree in co-relation 29824. Up to 2121 conditions per place. [2024-06-27 22:29:29,770 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 493 selfloop transitions, 257 changer transitions 0/759 dead transitions. [2024-06-27 22:29:29,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 759 transitions, 15365 flow [2024-06-27 22:29:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:29:29,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:29:29,771 INFO L175 Difference]: Start difference. First operand has 531 places, 736 transitions, 13305 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:29:29,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 759 transitions, 15365 flow [2024-06-27 22:29:35,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 759 transitions, 14420 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:35,272 INFO L231 Difference]: Finished difference. Result has 532 places, 738 transitions, 12948 flow [2024-06-27 22:29:35,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12366, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12948, PETRI_PLACES=532, PETRI_TRANSITIONS=738} [2024-06-27 22:29:35,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 489 predicate places. [2024-06-27 22:29:35,273 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 738 transitions, 12948 flow [2024-06-27 22:29:35,273 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 22:29:35,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:35,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:35,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 22:29:35,273 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 22:29:35,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 699974799, now seen corresponding path program 31 times [2024-06-27 22:29:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335809423] [2024-06-27 22:29:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:36,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:36,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335809423] [2024-06-27 22:29:36,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335809423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:36,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:36,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:36,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312621483] [2024-06-27 22:29:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:36,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:36,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 738 transitions, 12948 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 22:29:36,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:36,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:36,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:38,036 INFO L124 PetriNetUnfolderBase]: 1599/2864 cut-off events. [2024-06-27 22:29:38,037 INFO L125 PetriNetUnfolderBase]: For 617207/617207 co-relation queries the response was YES. [2024-06-27 22:29:38,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29990 conditions, 2864 events. 1599/2864 cut-off events. For 617207/617207 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 17527 event pairs, 126 based on Foata normal form. 1/2707 useless extension candidates. Maximal degree in co-relation 29721. Up to 2243 conditions per place. [2024-06-27 22:29:38,085 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 555 selfloop transitions, 198 changer transitions 0/762 dead transitions. [2024-06-27 22:29:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 762 transitions, 15386 flow [2024-06-27 22:29:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:29:38,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:29:38,086 INFO L175 Difference]: Start difference. First operand has 532 places, 738 transitions, 12948 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:29:38,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 762 transitions, 15386 flow [2024-06-27 22:29:41,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 762 transitions, 14560 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:41,721 INFO L231 Difference]: Finished difference. Result has 533 places, 740 transitions, 12582 flow [2024-06-27 22:29:41,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12122, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12582, PETRI_PLACES=533, PETRI_TRANSITIONS=740} [2024-06-27 22:29:41,721 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 490 predicate places. [2024-06-27 22:29:41,721 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 740 transitions, 12582 flow [2024-06-27 22:29:41,722 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 22:29:41,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 22:29:41,722 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 22:29:41,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1084086313, now seen corresponding path program 32 times [2024-06-27 22:29:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439836515] [2024-06-27 22:29:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:43,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439836515] [2024-06-27 22:29:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439836515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203194459] [2024-06-27 22:29:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:43,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:43,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 740 transitions, 12582 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 22:29:43,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:43,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:43,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:44,379 INFO L124 PetriNetUnfolderBase]: 1597/2861 cut-off events. [2024-06-27 22:29:44,379 INFO L125 PetriNetUnfolderBase]: For 603326/603326 co-relation queries the response was YES. [2024-06-27 22:29:44,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29023 conditions, 2861 events. 1597/2861 cut-off events. For 603326/603326 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 17472 event pairs, 126 based on Foata normal form. 1/2704 useless extension candidates. Maximal degree in co-relation 28755. Up to 2241 conditions per place. [2024-06-27 22:29:44,432 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 524 selfloop transitions, 228 changer transitions 0/761 dead transitions. [2024-06-27 22:29:44,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 761 transitions, 14584 flow [2024-06-27 22:29:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:29:44,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2024-06-27 22:29:44,433 INFO L175 Difference]: Start difference. First operand has 533 places, 740 transitions, 12582 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:29:44,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 761 transitions, 14584 flow [2024-06-27 22:29:49,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 761 transitions, 14263 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 22:29:49,697 INFO L231 Difference]: Finished difference. Result has 537 places, 740 transitions, 12725 flow [2024-06-27 22:29:49,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12261, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12725, PETRI_PLACES=537, PETRI_TRANSITIONS=740} [2024-06-27 22:29:49,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 494 predicate places. [2024-06-27 22:29:49,698 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 740 transitions, 12725 flow [2024-06-27 22:29:49,699 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 22:29:49,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:49,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:49,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 22:29:49,699 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 22:29:49,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1092657193, now seen corresponding path program 33 times [2024-06-27 22:29:49,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:49,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166842123] [2024-06-27 22:29:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166842123] [2024-06-27 22:29:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166842123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:51,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:51,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:29:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859327664] [2024-06-27 22:29:51,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:29:51,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:51,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:29:51,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:29:51,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:29:51,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 740 transitions, 12725 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 22:29:51,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:51,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:29:51,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:52,531 INFO L124 PetriNetUnfolderBase]: 1602/2869 cut-off events. [2024-06-27 22:29:52,532 INFO L125 PetriNetUnfolderBase]: For 609715/609715 co-relation queries the response was YES. [2024-06-27 22:29:52,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29201 conditions, 2869 events. 1602/2869 cut-off events. For 609715/609715 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 17534 event pairs, 126 based on Foata normal form. 1/2712 useless extension candidates. Maximal degree in co-relation 28932. Up to 2247 conditions per place. [2024-06-27 22:29:52,573 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 567 selfloop transitions, 187 changer transitions 0/763 dead transitions. [2024-06-27 22:29:52,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 763 transitions, 14807 flow [2024-06-27 22:29:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:29:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:29:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:29:52,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2024-06-27 22:29:52,575 INFO L175 Difference]: Start difference. First operand has 537 places, 740 transitions, 12725 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:29:52,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 763 transitions, 14807 flow [2024-06-27 22:29:58,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 763 transitions, 14434 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:29:58,732 INFO L231 Difference]: Finished difference. Result has 538 places, 742 transitions, 12808 flow [2024-06-27 22:29:58,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12354, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12808, PETRI_PLACES=538, PETRI_TRANSITIONS=742} [2024-06-27 22:29:58,733 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 495 predicate places. [2024-06-27 22:29:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 742 transitions, 12808 flow [2024-06-27 22:29:58,733 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 22:29:58,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:58,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:58,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 22:29:58,733 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 22:29:58,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1092426801, now seen corresponding path program 34 times [2024-06-27 22:29:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:58,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421013341] [2024-06-27 22:29:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:58,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421013341] [2024-06-27 22:30:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421013341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:00,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057264489] [2024-06-27 22:30:00,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:00,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:00,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 742 transitions, 12808 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 22:30:00,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:00,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:00,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:01,511 INFO L124 PetriNetUnfolderBase]: 1608/2880 cut-off events. [2024-06-27 22:30:01,511 INFO L125 PetriNetUnfolderBase]: For 616885/616885 co-relation queries the response was YES. [2024-06-27 22:30:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29312 conditions, 2880 events. 1608/2880 cut-off events. For 616885/616885 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17580 event pairs, 128 based on Foata normal form. 1/2721 useless extension candidates. Maximal degree in co-relation 29042. Up to 2141 conditions per place. [2024-06-27 22:30:01,556 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 503 selfloop transitions, 253 changer transitions 0/765 dead transitions. [2024-06-27 22:30:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 765 transitions, 14866 flow [2024-06-27 22:30:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:30:01,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44522144522144524 [2024-06-27 22:30:01,557 INFO L175 Difference]: Start difference. First operand has 538 places, 742 transitions, 12808 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:30:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 765 transitions, 14866 flow [2024-06-27 22:30:06,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 765 transitions, 14409 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:06,189 INFO L231 Difference]: Finished difference. Result has 540 places, 744 transitions, 12909 flow [2024-06-27 22:30:06,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12351, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12909, PETRI_PLACES=540, PETRI_TRANSITIONS=744} [2024-06-27 22:30:06,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 497 predicate places. [2024-06-27 22:30:06,190 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 744 transitions, 12909 flow [2024-06-27 22:30:06,190 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 22:30:06,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:06,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:06,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 22:30:06,190 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 22:30:06,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 737505535, now seen corresponding path program 35 times [2024-06-27 22:30:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706335879] [2024-06-27 22:30:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:07,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706335879] [2024-06-27 22:30:07,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706335879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:07,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:07,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:07,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130144907] [2024-06-27 22:30:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:07,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:07,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:07,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:07,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:07,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 744 transitions, 12909 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 22:30:07,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:07,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:09,038 INFO L124 PetriNetUnfolderBase]: 1606/2877 cut-off events. [2024-06-27 22:30:09,039 INFO L125 PetriNetUnfolderBase]: For 604296/604296 co-relation queries the response was YES. [2024-06-27 22:30:09,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29144 conditions, 2877 events. 1606/2877 cut-off events. For 604296/604296 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17578 event pairs, 128 based on Foata normal form. 1/2718 useless extension candidates. Maximal degree in co-relation 28874. Up to 2139 conditions per place. [2024-06-27 22:30:09,088 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 500 selfloop transitions, 255 changer transitions 0/764 dead transitions. [2024-06-27 22:30:09,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 764 transitions, 14535 flow [2024-06-27 22:30:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:30:09,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:30:09,089 INFO L175 Difference]: Start difference. First operand has 540 places, 744 transitions, 12909 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:30:09,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 764 transitions, 14535 flow [2024-06-27 22:30:14,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 764 transitions, 13812 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 22:30:14,855 INFO L231 Difference]: Finished difference. Result has 542 places, 744 transitions, 12704 flow [2024-06-27 22:30:14,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12186, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12704, PETRI_PLACES=542, PETRI_TRANSITIONS=744} [2024-06-27 22:30:14,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 22:30:14,856 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 744 transitions, 12704 flow [2024-06-27 22:30:14,856 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 22:30:14,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:14,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 22:30:14,856 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 22:30:14,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash 737744793, now seen corresponding path program 34 times [2024-06-27 22:30:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47562271] [2024-06-27 22:30:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47562271] [2024-06-27 22:30:16,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47562271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:16,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:16,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:16,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753329018] [2024-06-27 22:30:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:16,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:16,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 744 transitions, 12704 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 22:30:16,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:16,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:16,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:17,783 INFO L124 PetriNetUnfolderBase]: 1611/2886 cut-off events. [2024-06-27 22:30:17,783 INFO L125 PetriNetUnfolderBase]: For 609745/609745 co-relation queries the response was YES. [2024-06-27 22:30:17,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29125 conditions, 2886 events. 1611/2886 cut-off events. For 609745/609745 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 17657 event pairs, 126 based on Foata normal form. 1/2728 useless extension candidates. Maximal degree in co-relation 28854. Up to 2259 conditions per place. [2024-06-27 22:30:17,823 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 573 selfloop transitions, 185 changer transitions 0/767 dead transitions. [2024-06-27 22:30:17,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 767 transitions, 14788 flow [2024-06-27 22:30:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:30:17,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:30:17,824 INFO L175 Difference]: Start difference. First operand has 542 places, 744 transitions, 12704 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:30:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 767 transitions, 14788 flow [2024-06-27 22:30:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 767 transitions, 14240 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:30:21,935 INFO L231 Difference]: Finished difference. Result has 542 places, 746 transitions, 12596 flow [2024-06-27 22:30:21,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12156, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12596, PETRI_PLACES=542, PETRI_TRANSITIONS=746} [2024-06-27 22:30:21,935 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 22:30:21,935 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 746 transitions, 12596 flow [2024-06-27 22:30:21,936 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 22:30:21,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:21,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:21,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 22:30:21,936 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 22:30:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1092426553, now seen corresponding path program 35 times [2024-06-27 22:30:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892569449] [2024-06-27 22:30:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:23,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:23,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892569449] [2024-06-27 22:30:23,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892569449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:23,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:23,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975607943] [2024-06-27 22:30:23,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:23,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:23,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:23,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:23,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 746 transitions, 12596 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 22:30:23,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:23,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:23,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:24,657 INFO L124 PetriNetUnfolderBase]: 1609/2883 cut-off events. [2024-06-27 22:30:24,657 INFO L125 PetriNetUnfolderBase]: For 596113/596113 co-relation queries the response was YES. [2024-06-27 22:30:24,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28706 conditions, 2883 events. 1609/2883 cut-off events. For 596113/596113 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 17638 event pairs, 126 based on Foata normal form. 1/2725 useless extension candidates. Maximal degree in co-relation 28434. Up to 2257 conditions per place. [2024-06-27 22:30:24,705 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 574 selfloop transitions, 183 changer transitions 0/766 dead transitions. [2024-06-27 22:30:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 766 transitions, 14226 flow [2024-06-27 22:30:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:30:24,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-27 22:30:24,706 INFO L175 Difference]: Start difference. First operand has 542 places, 746 transitions, 12596 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:30:24,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 766 transitions, 14226 flow [2024-06-27 22:30:28,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 766 transitions, 13457 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-27 22:30:28,796 INFO L231 Difference]: Finished difference. Result has 542 places, 746 transitions, 12201 flow [2024-06-27 22:30:28,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11827, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12201, PETRI_PLACES=542, PETRI_TRANSITIONS=746} [2024-06-27 22:30:28,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 22:30:28,796 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 746 transitions, 12201 flow [2024-06-27 22:30:28,796 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 22:30:28,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:28,797 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 22:30:28,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 22:30:28,797 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 22:30:28,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1456637313, now seen corresponding path program 1 times [2024-06-27 22:30:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569509434] [2024-06-27 22:30:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:28,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:30,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569509434] [2024-06-27 22:30:30,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569509434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:30,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:30,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468165038] [2024-06-27 22:30:30,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:30,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:30,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 746 transitions, 12201 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 22:30:30,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:30,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:30,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:31,608 INFO L124 PetriNetUnfolderBase]: 1622/2900 cut-off events. [2024-06-27 22:30:31,608 INFO L125 PetriNetUnfolderBase]: For 620037/620037 co-relation queries the response was YES. [2024-06-27 22:30:31,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 2900 events. 1622/2900 cut-off events. For 620037/620037 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 17745 event pairs, 139 based on Foata normal form. 2/2742 useless extension candidates. Maximal degree in co-relation 28504. Up to 2501 conditions per place. [2024-06-27 22:30:31,660 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 677 selfloop transitions, 80 changer transitions 0/766 dead transitions. [2024-06-27 22:30:31,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 766 transitions, 13883 flow [2024-06-27 22:30:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:31,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:30:31,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-06-27 22:30:31,661 INFO L175 Difference]: Start difference. First operand has 542 places, 746 transitions, 12201 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:30:31,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 766 transitions, 13883 flow [2024-06-27 22:30:35,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 766 transitions, 13465 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 22:30:35,658 INFO L231 Difference]: Finished difference. Result has 541 places, 748 transitions, 12044 flow [2024-06-27 22:30:35,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11783, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12044, PETRI_PLACES=541, PETRI_TRANSITIONS=748} [2024-06-27 22:30:35,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 498 predicate places. [2024-06-27 22:30:35,658 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 748 transitions, 12044 flow [2024-06-27 22:30:35,658 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 22:30:35,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:35,658 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 22:30:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 22:30:35,659 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 22:30:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1345666923, now seen corresponding path program 2 times [2024-06-27 22:30:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062209972] [2024-06-27 22:30:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:36,977 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 22:30:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062209972] [2024-06-27 22:30:36,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062209972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:36,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:36,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:36,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460589366] [2024-06-27 22:30:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:36,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:37,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:37,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 748 transitions, 12044 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 22:30:37,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:37,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:37,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:38,432 INFO L124 PetriNetUnfolderBase]: 1649/2951 cut-off events. [2024-06-27 22:30:38,433 INFO L125 PetriNetUnfolderBase]: For 629393/629393 co-relation queries the response was YES. [2024-06-27 22:30:38,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29087 conditions, 2951 events. 1649/2951 cut-off events. For 629393/629393 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 18193 event pairs, 133 based on Foata normal form. 2/2791 useless extension candidates. Maximal degree in co-relation 28813. Up to 2534 conditions per place. [2024-06-27 22:30:38,484 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 692 selfloop transitions, 72 changer transitions 0/773 dead transitions. [2024-06-27 22:30:38,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 773 transitions, 13814 flow [2024-06-27 22:30:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:30:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:30:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:30:38,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 22:30:38,485 INFO L175 Difference]: Start difference. First operand has 541 places, 748 transitions, 12044 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:30:38,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 773 transitions, 13814 flow [2024-06-27 22:30:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 773 transitions, 13577 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:42,856 INFO L231 Difference]: Finished difference. Result has 544 places, 752 transitions, 12119 flow [2024-06-27 22:30:42,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11807, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12119, PETRI_PLACES=544, PETRI_TRANSITIONS=752} [2024-06-27 22:30:42,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 501 predicate places. [2024-06-27 22:30:42,856 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 752 transitions, 12119 flow [2024-06-27 22:30:42,857 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 22:30:42,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:42,857 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 22:30:42,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 22:30:42,857 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 22:30:42,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1461999693, now seen corresponding path program 3 times [2024-06-27 22:30:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:42,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417323833] [2024-06-27 22:30:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:44,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417323833] [2024-06-27 22:30:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417323833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095251785] [2024-06-27 22:30:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:44,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:44,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:30:44,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 752 transitions, 12119 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 22:30:44,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:44,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:30:44,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:46,044 INFO L124 PetriNetUnfolderBase]: 1572/2881 cut-off events. [2024-06-27 22:30:46,044 INFO L125 PetriNetUnfolderBase]: For 639384/639408 co-relation queries the response was YES. [2024-06-27 22:30:46,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28542 conditions, 2881 events. 1572/2881 cut-off events. For 639384/639408 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 18202 event pairs, 130 based on Foata normal form. 2/2711 useless extension candidates. Maximal degree in co-relation 28266. Up to 2187 conditions per place. [2024-06-27 22:30:46,094 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 544 selfloop transitions, 92 changer transitions 0/772 dead transitions. [2024-06-27 22:30:46,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 772 transitions, 13575 flow [2024-06-27 22:30:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:30:46,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44988344988344986 [2024-06-27 22:30:46,095 INFO L175 Difference]: Start difference. First operand has 544 places, 752 transitions, 12119 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:30:46,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 772 transitions, 13575 flow [2024-06-27 22:30:51,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 772 transitions, 13351 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 22:30:51,607 INFO L231 Difference]: Finished difference. Result has 549 places, 754 transitions, 12187 flow [2024-06-27 22:30:51,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11895, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12187, PETRI_PLACES=549, PETRI_TRANSITIONS=754} [2024-06-27 22:30:51,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 506 predicate places. [2024-06-27 22:30:51,607 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 754 transitions, 12187 flow [2024-06-27 22:30:51,607 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 22:30:51,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:51,607 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 22:30:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 22:30:51,608 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 22:30:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1345820745, now seen corresponding path program 1 times [2024-06-27 22:30:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483052126] [2024-06-27 22:30:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:53,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483052126] [2024-06-27 22:30:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483052126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:53,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:53,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:30:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491275691] [2024-06-27 22:30:53,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:53,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:30:53,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:53,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:30:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:30:53,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:30:53,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 754 transitions, 12187 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 22:30:53,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:53,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:30:53,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:54,621 INFO L124 PetriNetUnfolderBase]: 1668/2991 cut-off events. [2024-06-27 22:30:54,622 INFO L125 PetriNetUnfolderBase]: For 621870/621870 co-relation queries the response was YES. [2024-06-27 22:30:54,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 2991 events. 1668/2991 cut-off events. For 621870/621870 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 18552 event pairs, 141 based on Foata normal form. 1/2828 useless extension candidates. Maximal degree in co-relation 29076. Up to 2587 conditions per place. [2024-06-27 22:30:54,671 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 675 selfloop transitions, 90 changer transitions 0/774 dead transitions. [2024-06-27 22:30:54,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 774 transitions, 13851 flow [2024-06-27 22:30:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:30:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:30:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:30:54,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289044289044289 [2024-06-27 22:30:54,672 INFO L175 Difference]: Start difference. First operand has 549 places, 754 transitions, 12187 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:30:54,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 774 transitions, 13851 flow [2024-06-27 22:31:00,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 774 transitions, 13581 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:00,461 INFO L231 Difference]: Finished difference. Result has 551 places, 756 transitions, 12158 flow [2024-06-27 22:31:00,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11917, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12158, PETRI_PLACES=551, PETRI_TRANSITIONS=756} [2024-06-27 22:31:00,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 508 predicate places. [2024-06-27 22:31:00,462 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 756 transitions, 12158 flow [2024-06-27 22:31:00,462 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 22:31:00,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:00,462 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 22:31:00,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 22:31:00,462 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 22:31:00,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1462215174, now seen corresponding path program 1 times [2024-06-27 22:31:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874785975] [2024-06-27 22:31:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:01,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874785975] [2024-06-27 22:31:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874785975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677696827] [2024-06-27 22:31:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:01,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:31:01,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 756 transitions, 12158 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 22:31:01,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:01,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:31:01,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:03,041 INFO L124 PetriNetUnfolderBase]: 1271/2404 cut-off events. [2024-06-27 22:31:03,041 INFO L125 PetriNetUnfolderBase]: For 621178/621234 co-relation queries the response was YES. [2024-06-27 22:31:03,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24562 conditions, 2404 events. 1271/2404 cut-off events. For 621178/621234 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 15175 event pairs, 163 based on Foata normal form. 1/2241 useless extension candidates. Maximal degree in co-relation 24283. Up to 1987 conditions per place. [2024-06-27 22:31:03,084 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 647 selfloop transitions, 107 changer transitions 0/774 dead transitions. [2024-06-27 22:31:03,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 774 transitions, 13738 flow [2024-06-27 22:31:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:31:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:31:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:31:03,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-27 22:31:03,085 INFO L175 Difference]: Start difference. First operand has 551 places, 756 transitions, 12158 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:31:03,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 774 transitions, 13738 flow [2024-06-27 22:31:07,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 774 transitions, 13535 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:31:07,982 INFO L231 Difference]: Finished difference. Result has 552 places, 758 transitions, 12219 flow [2024-06-27 22:31:07,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11955, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12219, PETRI_PLACES=552, PETRI_TRANSITIONS=758} [2024-06-27 22:31:07,983 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 509 predicate places. [2024-06-27 22:31:07,983 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 758 transitions, 12219 flow [2024-06-27 22:31:07,983 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 22:31:07,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:07,983 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 22:31:07,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 22:31:07,984 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 22:31:07,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1462005645, now seen corresponding path program 2 times [2024-06-27 22:31:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:07,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483517867] [2024-06-27 22:31:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483517867] [2024-06-27 22:31:09,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483517867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:09,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233308173] [2024-06-27 22:31:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:09,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:31:09,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 758 transitions, 12219 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 22:31:09,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:09,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:31:09,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:11,323 INFO L124 PetriNetUnfolderBase]: 1687/3016 cut-off events. [2024-06-27 22:31:11,323 INFO L125 PetriNetUnfolderBase]: For 653344/653344 co-relation queries the response was YES. [2024-06-27 22:31:11,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29700 conditions, 3016 events. 1687/3016 cut-off events. For 653344/653344 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 18651 event pairs, 146 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 29421. Up to 2545 conditions per place. [2024-06-27 22:31:11,371 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 656 selfloop transitions, 116 changer transitions 0/781 dead transitions. [2024-06-27 22:31:11,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 781 transitions, 14349 flow [2024-06-27 22:31:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 22:31:11,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-27 22:31:11,372 INFO L175 Difference]: Start difference. First operand has 552 places, 758 transitions, 12219 flow. Second operand 12 states and 200 transitions. [2024-06-27 22:31:11,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 781 transitions, 14349 flow [2024-06-27 22:31:17,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 781 transitions, 14119 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:31:17,816 INFO L231 Difference]: Finished difference. Result has 556 places, 762 transitions, 12321 flow [2024-06-27 22:31:17,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11989, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12321, PETRI_PLACES=556, PETRI_TRANSITIONS=762} [2024-06-27 22:31:17,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 513 predicate places. [2024-06-27 22:31:17,816 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 762 transitions, 12321 flow [2024-06-27 22:31:17,816 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 22:31:17,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:17,816 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 22:31:17,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 22:31:17,817 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 22:31:17,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1462207455, now seen corresponding path program 3 times [2024-06-27 22:31:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:17,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128710833] [2024-06-27 22:31:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:19,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:19,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128710833] [2024-06-27 22:31:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128710833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:19,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:19,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954300452] [2024-06-27 22:31:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:19,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:19,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:31:19,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 762 transitions, 12321 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 22:31:19,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:19,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:31:19,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:21,130 INFO L124 PetriNetUnfolderBase]: 1693/3028 cut-off events. [2024-06-27 22:31:21,130 INFO L125 PetriNetUnfolderBase]: For 661520/661520 co-relation queries the response was YES. [2024-06-27 22:31:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29888 conditions, 3028 events. 1693/3028 cut-off events. For 661520/661520 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 18773 event pairs, 146 based on Foata normal form. 1/2862 useless extension candidates. Maximal degree in co-relation 29607. Up to 2552 conditions per place. [2024-06-27 22:31:21,189 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 651 selfloop transitions, 123 changer transitions 0/783 dead transitions. [2024-06-27 22:31:21,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 783 transitions, 14417 flow [2024-06-27 22:31:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 22:31:21,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252136752136752 [2024-06-27 22:31:21,190 INFO L175 Difference]: Start difference. First operand has 556 places, 762 transitions, 12321 flow. Second operand 12 states and 199 transitions. [2024-06-27 22:31:21,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 783 transitions, 14417 flow [2024-06-27 22:31:26,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 783 transitions, 14236 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:31:26,425 INFO L231 Difference]: Finished difference. Result has 560 places, 764 transitions, 12442 flow [2024-06-27 22:31:26,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12150, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12442, PETRI_PLACES=560, PETRI_TRANSITIONS=764} [2024-06-27 22:31:26,425 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 517 predicate places. [2024-06-27 22:31:26,426 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 764 transitions, 12442 flow [2024-06-27 22:31:26,426 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 22:31:26,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:26,426 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 22:31:26,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 22:31:26,426 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 22:31:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1462214895, now seen corresponding path program 4 times [2024-06-27 22:31:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355951138] [2024-06-27 22:31:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355951138] [2024-06-27 22:31:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355951138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335690741] [2024-06-27 22:31:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:28,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:28,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:28,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:31:28,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 764 transitions, 12442 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 22:31:28,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:28,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:31:28,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:29,668 INFO L124 PetriNetUnfolderBase]: 1691/3025 cut-off events. [2024-06-27 22:31:29,668 INFO L125 PetriNetUnfolderBase]: For 646862/646862 co-relation queries the response was YES. [2024-06-27 22:31:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29818 conditions, 3025 events. 1691/3025 cut-off events. For 646862/646862 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 18774 event pairs, 146 based on Foata normal form. 1/2859 useless extension candidates. Maximal degree in co-relation 29535. Up to 2550 conditions per place. [2024-06-27 22:31:29,712 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 641 selfloop transitions, 132 changer transitions 0/782 dead transitions. [2024-06-27 22:31:29,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 782 transitions, 14082 flow [2024-06-27 22:31:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:31:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:31:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 22:31:29,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42094017094017094 [2024-06-27 22:31:29,713 INFO L175 Difference]: Start difference. First operand has 560 places, 764 transitions, 12442 flow. Second operand 12 states and 197 transitions. [2024-06-27 22:31:29,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 782 transitions, 14082 flow [2024-06-27 22:31:35,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 782 transitions, 13782 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 22:31:35,773 INFO L231 Difference]: Finished difference. Result has 562 places, 764 transitions, 12414 flow [2024-06-27 22:31:35,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12142, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12414, PETRI_PLACES=562, PETRI_TRANSITIONS=764} [2024-06-27 22:31:35,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 519 predicate places. [2024-06-27 22:31:35,774 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 764 transitions, 12414 flow [2024-06-27 22:31:35,774 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 22:31:35,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:35,774 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 22:31:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 22:31:35,774 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 22:31:35,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1655344457, now seen corresponding path program 4 times [2024-06-27 22:31:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525711765] [2024-06-27 22:31:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:37,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525711765] [2024-06-27 22:31:37,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525711765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:37,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:37,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376918312] [2024-06-27 22:31:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:37,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:37,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:37,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 22:31:37,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 764 transitions, 12414 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 22:31:37,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:37,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 22:31:37,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:38,905 INFO L124 PetriNetUnfolderBase]: 1610/2955 cut-off events. [2024-06-27 22:31:38,905 INFO L125 PetriNetUnfolderBase]: For 677609/677609 co-relation queries the response was YES. [2024-06-27 22:31:38,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29392 conditions, 2955 events. 1610/2955 cut-off events. For 677609/677609 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 18835 event pairs, 137 based on Foata normal form. 2/2789 useless extension candidates. Maximal degree in co-relation 29108. Up to 2233 conditions per place. [2024-06-27 22:31:38,956 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 545 selfloop transitions, 103 changer transitions 0/784 dead transitions. [2024-06-27 22:31:38,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 784 transitions, 13906 flow [2024-06-27 22:31:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:31:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:31:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:31:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 22:31:38,957 INFO L175 Difference]: Start difference. First operand has 562 places, 764 transitions, 12414 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:31:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 784 transitions, 13906 flow [2024-06-27 22:31:44,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 784 transitions, 13628 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 22:31:44,866 INFO L231 Difference]: Finished difference. Result has 561 places, 766 transitions, 12453 flow [2024-06-27 22:31:44,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12136, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12453, PETRI_PLACES=561, PETRI_TRANSITIONS=766} [2024-06-27 22:31:44,867 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 518 predicate places. [2024-06-27 22:31:44,867 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 766 transitions, 12453 flow [2024-06-27 22:31:44,867 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 22:31:44,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:44,867 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 22:31:44,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 22:31:44,867 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 22:31:44,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1655552219, now seen corresponding path program 5 times [2024-06-27 22:31:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:44,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45432167] [2024-06-27 22:31:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:44,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45432167] [2024-06-27 22:31:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45432167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:31:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269510323] [2024-06-27 22:31:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:31:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:31:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:31:46,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 22:31:46,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 766 transitions, 12453 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 22:31:46,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:46,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 22:31:46,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15